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parse.c revision 1.121
      1  1.121       dsl /*	$NetBSD: parse.c,v 1.121 2006/12/03 20:40:44 dsl Exp $	*/
      2   1.15  christos 
      3    1.1       cgd /*
      4   1.27  christos  * Copyright (c) 1988, 1989, 1990, 1993
      5   1.27  christos  *	The Regents of the University of California.  All rights reserved.
      6   1.94       agc  *
      7   1.94       agc  * This code is derived from software contributed to Berkeley by
      8   1.94       agc  * Adam de Boor.
      9   1.94       agc  *
     10   1.94       agc  * Redistribution and use in source and binary forms, with or without
     11   1.94       agc  * modification, are permitted provided that the following conditions
     12   1.94       agc  * are met:
     13   1.94       agc  * 1. Redistributions of source code must retain the above copyright
     14   1.94       agc  *    notice, this list of conditions and the following disclaimer.
     15   1.94       agc  * 2. Redistributions in binary form must reproduce the above copyright
     16   1.94       agc  *    notice, this list of conditions and the following disclaimer in the
     17   1.94       agc  *    documentation and/or other materials provided with the distribution.
     18   1.94       agc  * 3. Neither the name of the University nor the names of its contributors
     19   1.94       agc  *    may be used to endorse or promote products derived from this software
     20   1.94       agc  *    without specific prior written permission.
     21   1.94       agc  *
     22   1.94       agc  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23   1.94       agc  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24   1.94       agc  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25   1.94       agc  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26   1.94       agc  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27   1.94       agc  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28   1.94       agc  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29   1.94       agc  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30   1.94       agc  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31   1.94       agc  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32   1.94       agc  * SUCH DAMAGE.
     33   1.94       agc  */
     34   1.94       agc 
     35   1.94       agc /*
     36    1.1       cgd  * Copyright (c) 1989 by Berkeley Softworks
     37    1.1       cgd  * All rights reserved.
     38    1.1       cgd  *
     39    1.1       cgd  * This code is derived from software contributed to Berkeley by
     40    1.1       cgd  * Adam de Boor.
     41    1.1       cgd  *
     42    1.1       cgd  * Redistribution and use in source and binary forms, with or without
     43    1.1       cgd  * modification, are permitted provided that the following conditions
     44    1.1       cgd  * are met:
     45    1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     46    1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     47    1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     48    1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     49    1.1       cgd  *    documentation and/or other materials provided with the distribution.
     50    1.1       cgd  * 3. All advertising materials mentioning features or use of this software
     51    1.1       cgd  *    must display the following acknowledgement:
     52    1.1       cgd  *	This product includes software developed by the University of
     53    1.1       cgd  *	California, Berkeley and its contributors.
     54    1.1       cgd  * 4. Neither the name of the University nor the names of its contributors
     55    1.1       cgd  *    may be used to endorse or promote products derived from this software
     56    1.1       cgd  *    without specific prior written permission.
     57    1.1       cgd  *
     58    1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     59    1.1       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     60    1.1       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     61    1.1       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     62    1.1       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     63    1.1       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     64    1.1       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     65    1.1       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     66    1.1       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     67    1.1       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     68    1.1       cgd  * SUCH DAMAGE.
     69    1.1       cgd  */
     70    1.1       cgd 
     71   1.96      ross #ifndef MAKE_NATIVE
     72  1.121       dsl static char rcsid[] = "$NetBSD: parse.c,v 1.121 2006/12/03 20:40:44 dsl Exp $";
     73   1.36     lukem #else
     74   1.34  christos #include <sys/cdefs.h>
     75    1.1       cgd #ifndef lint
     76   1.15  christos #if 0
     77   1.27  christos static char sccsid[] = "@(#)parse.c	8.3 (Berkeley) 3/19/94";
     78   1.15  christos #else
     79  1.121       dsl __RCSID("$NetBSD: parse.c,v 1.121 2006/12/03 20:40:44 dsl Exp $");
     80   1.15  christos #endif
     81    1.1       cgd #endif /* not lint */
     82   1.36     lukem #endif
     83    1.1       cgd 
     84    1.1       cgd /*-
     85    1.1       cgd  * parse.c --
     86    1.1       cgd  *	Functions to parse a makefile.
     87    1.1       cgd  *
     88    1.1       cgd  *	One function, Parse_Init, must be called before any functions
     89    1.1       cgd  *	in this module are used. After that, the function Parse_File is the
     90    1.1       cgd  *	main entry point and controls most of the other functions in this
     91    1.1       cgd  *	module.
     92    1.1       cgd  *
     93    1.1       cgd  *	Most important structures are kept in Lsts. Directories for
     94    1.1       cgd  *	the #include "..." function are kept in the 'parseIncPath' Lst, while
     95    1.1       cgd  *	those for the #include <...> are kept in the 'sysIncPath' Lst. The
     96    1.1       cgd  *	targets currently being defined are kept in the 'targets' Lst.
     97    1.1       cgd  *
     98    1.1       cgd  *	The variables 'fname' and 'lineno' are used to track the name
     99    1.1       cgd  *	of the current file and the line number in that file so that error
    100    1.1       cgd  *	messages can be more meaningful.
    101    1.1       cgd  *
    102    1.1       cgd  * Interface:
    103    1.1       cgd  *	Parse_Init	    	    Initialization function which must be
    104    1.1       cgd  *	    	  	    	    called before anything else in this module
    105    1.1       cgd  *	    	  	    	    is used.
    106    1.1       cgd  *
    107    1.9       jtc  *	Parse_End		    Cleanup the module
    108    1.9       jtc  *
    109    1.1       cgd  *	Parse_File	    	    Function used to parse a makefile. It must
    110    1.1       cgd  *	    	  	    	    be given the name of the file, which should
    111    1.1       cgd  *	    	  	    	    already have been opened, and a function
    112    1.1       cgd  *	    	  	    	    to call to read a character from the file.
    113    1.1       cgd  *
    114    1.1       cgd  *	Parse_IsVar	    	    Returns TRUE if the given line is a
    115    1.1       cgd  *	    	  	    	    variable assignment. Used by MainParseArgs
    116    1.1       cgd  *	    	  	    	    to determine if an argument is a target
    117    1.1       cgd  *	    	  	    	    or a variable assignment. Used internally
    118    1.1       cgd  *	    	  	    	    for pretty much the same thing...
    119    1.1       cgd  *
    120    1.1       cgd  *	Parse_Error	    	    Function called when an error occurs in
    121    1.1       cgd  *	    	  	    	    parsing. Used by the variable and
    122    1.1       cgd  *	    	  	    	    conditional modules.
    123    1.1       cgd  *	Parse_MainName	    	    Returns a Lst of the main target to create.
    124    1.1       cgd  */
    125    1.1       cgd 
    126   1.84       wiz #include <ctype.h>
    127   1.84       wiz #include <errno.h>
    128    1.5       cgd #include <stdarg.h>
    129    1.5       cgd #include <stdio.h>
    130   1.84       wiz 
    131    1.1       cgd #include "make.h"
    132    1.5       cgd #include "hash.h"
    133    1.5       cgd #include "dir.h"
    134    1.5       cgd #include "job.h"
    135    1.1       cgd #include "buf.h"
    136    1.1       cgd #include "pathnames.h"
    137    1.1       cgd 
    138    1.1       cgd /*
    139    1.1       cgd  * These values are returned by ParseEOF to tell Parse_File whether to
    140    1.1       cgd  * CONTINUE parsing, i.e. it had only reached the end of an include file,
    141    1.1       cgd  * or if it's DONE.
    142    1.1       cgd  */
    143    1.1       cgd #define	CONTINUE	1
    144    1.1       cgd #define	DONE		0
    145    1.1       cgd static Lst     	    targets;	/* targets we're working on */
    146   1.45   mycroft #ifdef CLEANUP
    147    1.9       jtc static Lst     	    targCmds;	/* command lines for targets */
    148   1.45   mycroft #endif
    149    1.1       cgd static Boolean	    inLine;	/* true if currently in a dependency
    150    1.1       cgd 				 * line or its commands */
    151    1.5       cgd typedef struct {
    152    1.5       cgd     char *str;
    153    1.5       cgd     char *ptr;
    154    1.5       cgd } PTR;
    155    1.1       cgd 
    156    1.1       cgd static int	    fatals = 0;
    157    1.1       cgd 
    158    1.1       cgd static GNode	    *mainNode;	/* The main target to create. This is the
    159    1.1       cgd 				 * first target on the first dependency
    160    1.1       cgd 				 * line in the first makefile */
    161    1.1       cgd typedef struct IFile {
    162    1.1       cgd     char           *fname;	    /* name of previous file */
    163    1.1       cgd     int             lineno;	    /* saved line number */
    164    1.5       cgd     FILE *          F;		    /* the open stream */
    165   1.82   reinoud     PTR *	    P;	    	    /* the char pointer */
    166    1.5       cgd } IFile;
    167    1.1       cgd 
    168   1.82   reinoud static IFile	    curFile;
    169   1.82   reinoud 
    170   1.82   reinoud 
    171   1.82   reinoud /*
    172   1.82   reinoud  * Definitions for handling #include specifications
    173   1.82   reinoud  */
    174   1.82   reinoud 
    175    1.1       cgd static Lst      includes;  	/* stack of IFiles generated by
    176    1.1       cgd 				 * #includes */
    177    1.1       cgd Lst         	parseIncPath;	/* list of directories for "..." includes */
    178    1.1       cgd Lst         	sysIncPath;	/* list of directories for <...> includes */
    179   1.74        tv Lst         	defIncPath;	/* default directories for <...> includes */
    180    1.1       cgd 
    181    1.1       cgd /*-
    182    1.1       cgd  * specType contains the SPECial TYPE of the current target. It is
    183    1.1       cgd  * Not if the target is unspecial. If it *is* special, however, the children
    184    1.1       cgd  * are linked as children of the parent but not vice versa. This variable is
    185    1.1       cgd  * set in ParseDoDependency
    186    1.1       cgd  */
    187    1.1       cgd typedef enum {
    188    1.1       cgd     Begin,  	    /* .BEGIN */
    189    1.1       cgd     Default,	    /* .DEFAULT */
    190    1.1       cgd     End,    	    /* .END */
    191    1.1       cgd     Ignore,	    /* .IGNORE */
    192    1.1       cgd     Includes,	    /* .INCLUDES */
    193    1.1       cgd     Interrupt,	    /* .INTERRUPT */
    194    1.1       cgd     Libs,	    /* .LIBS */
    195    1.1       cgd     MFlags,	    /* .MFLAGS or .MAKEFLAGS */
    196    1.1       cgd     Main,	    /* .MAIN and we don't have anything user-specified to
    197    1.1       cgd 		     * make */
    198    1.5       cgd     NoExport,	    /* .NOEXPORT */
    199   1.32       gwr     NoPath,	    /* .NOPATH */
    200    1.1       cgd     Not,	    /* Not special */
    201   1.75        tv     NotParallel,    /* .NOTPARALLEL */
    202    1.1       cgd     Null,   	    /* .NULL */
    203   1.75        tv     ExObjdir,	    /* .OBJDIR */
    204    1.1       cgd     Order,  	    /* .ORDER */
    205   1.18  christos     Parallel,	    /* .PARALLEL */
    206    1.5       cgd     ExPath,	    /* .PATH */
    207   1.22  christos     Phony,	    /* .PHONY */
    208   1.48       sjg #ifdef POSIX
    209   1.48       sjg     Posix,	    /* .POSIX */
    210   1.48       sjg #endif
    211    1.1       cgd     Precious,	    /* .PRECIOUS */
    212    1.5       cgd     ExShell,	    /* .SHELL */
    213    1.1       cgd     Silent,	    /* .SILENT */
    214    1.1       cgd     SingleShell,    /* .SINGLESHELL */
    215    1.1       cgd     Suffixes,	    /* .SUFFIXES */
    216   1.18  christos     Wait,	    /* .WAIT */
    217    1.5       cgd     Attribute	    /* Generic attribute */
    218    1.1       cgd } ParseSpecial;
    219    1.1       cgd 
    220    1.5       cgd static ParseSpecial specType;
    221    1.1       cgd 
    222   1.77  christos #define	LPAREN	'('
    223   1.77  christos #define	RPAREN	')'
    224    1.1       cgd /*
    225    1.1       cgd  * Predecessor node for handling .ORDER. Initialized to NILGNODE when .ORDER
    226    1.1       cgd  * seen, then set to each successive source on the line.
    227    1.1       cgd  */
    228    1.1       cgd static GNode	*predecessor;
    229    1.1       cgd 
    230    1.1       cgd /*
    231    1.1       cgd  * The parseKeywords table is searched using binary search when deciding
    232    1.1       cgd  * if a target or source is special. The 'spec' field is the ParseSpecial
    233    1.1       cgd  * type of the keyword ("Not" if the keyword isn't special as a target) while
    234    1.1       cgd  * the 'op' field is the operator to apply to the list of targets if the
    235    1.1       cgd  * keyword is used as a source ("0" if the keyword isn't special as a source)
    236    1.1       cgd  */
    237    1.1       cgd static struct {
    238   1.93  christos     const char   *name;    	/* Name of keyword */
    239    1.1       cgd     ParseSpecial  spec;	    	/* Type when used as a target */
    240    1.1       cgd     int	    	  op;	    	/* Operator when used as a source */
    241    1.1       cgd } parseKeywords[] = {
    242    1.1       cgd { ".BEGIN", 	  Begin,    	0 },
    243    1.1       cgd { ".DEFAULT",	  Default,  	0 },
    244    1.1       cgd { ".END",   	  End,	    	0 },
    245    1.1       cgd { ".EXEC",	  Attribute,   	OP_EXEC },
    246    1.1       cgd { ".IGNORE",	  Ignore,   	OP_IGNORE },
    247    1.1       cgd { ".INCLUDES",	  Includes, 	0 },
    248    1.1       cgd { ".INTERRUPT",	  Interrupt,	0 },
    249    1.1       cgd { ".INVISIBLE",	  Attribute,   	OP_INVISIBLE },
    250    1.1       cgd { ".JOIN",  	  Attribute,   	OP_JOIN },
    251    1.1       cgd { ".LIBS",  	  Libs,	    	0 },
    252   1.29  christos { ".MADE",	  Attribute,	OP_MADE },
    253    1.1       cgd { ".MAIN",	  Main,		0 },
    254    1.1       cgd { ".MAKE",  	  Attribute,   	OP_MAKE },
    255    1.1       cgd { ".MAKEFLAGS",	  MFlags,   	0 },
    256    1.1       cgd { ".MFLAGS",	  MFlags,   	0 },
    257   1.32       gwr { ".NOPATH",	  NoPath,	OP_NOPATH },
    258    1.1       cgd { ".NOTMAIN",	  Attribute,   	OP_NOTMAIN },
    259    1.1       cgd { ".NOTPARALLEL", NotParallel,	0 },
    260   1.18  christos { ".NO_PARALLEL", NotParallel,	0 },
    261    1.1       cgd { ".NULL",  	  Null,	    	0 },
    262   1.75        tv { ".OBJDIR",	  ExObjdir,	0 },
    263   1.14        ws { ".OPTIONAL",	  Attribute,   	OP_OPTIONAL },
    264    1.1       cgd { ".ORDER", 	  Order,    	0 },
    265   1.18  christos { ".PARALLEL",	  Parallel,	0 },
    266    1.5       cgd { ".PATH",	  ExPath,	0 },
    267   1.22  christos { ".PHONY",	  Phony,	OP_PHONY },
    268   1.48       sjg #ifdef POSIX
    269   1.48       sjg { ".POSIX",	  Posix,	0 },
    270   1.48       sjg #endif
    271    1.1       cgd { ".PRECIOUS",	  Precious, 	OP_PRECIOUS },
    272    1.1       cgd { ".RECURSIVE",	  Attribute,	OP_MAKE },
    273    1.5       cgd { ".SHELL", 	  ExShell,    	0 },
    274    1.1       cgd { ".SILENT",	  Silent,   	OP_SILENT },
    275    1.1       cgd { ".SINGLESHELL", SingleShell,	0 },
    276    1.1       cgd { ".SUFFIXES",	  Suffixes, 	0 },
    277    1.1       cgd { ".USE",   	  Attribute,   	OP_USE },
    278   1.71  christos { ".USEBEFORE",   Attribute,   	OP_USEBEFORE },
    279   1.18  christos { ".WAIT",	  Wait, 	0 },
    280    1.1       cgd };
    281    1.1       cgd 
    282   1.84       wiz static int ParseIsEscaped(const char *, const char *);
    283   1.93  christos static void ParseErrorInternal(char *, size_t, int, const char *, ...)
    284   1.53        is      __attribute__((__format__(__printf__, 4, 5)));
    285   1.93  christos static void ParseVErrorInternal(char *, size_t, int, const char *, va_list)
    286   1.53        is      __attribute__((__format__(__printf__, 4, 0)));
    287  1.120       dsl static int ParseFindKeyword(const char *);
    288   1.84       wiz static int ParseLinkSrc(ClientData, ClientData);
    289   1.84       wiz static int ParseDoOp(ClientData, ClientData);
    290  1.120       dsl static void ParseDoSrc(int, const char *);
    291   1.84       wiz static int ParseFindMain(ClientData, ClientData);
    292   1.84       wiz static int ParseAddDir(ClientData, ClientData);
    293   1.84       wiz static int ParseClearPath(ClientData, ClientData);
    294   1.84       wiz static void ParseDoDependency(char *);
    295   1.84       wiz static int ParseAddCmd(ClientData, ClientData);
    296  1.107     perry static inline int ParseReadc(void);
    297   1.84       wiz static void ParseUnreadc(int);
    298   1.84       wiz static void ParseHasCommands(ClientData);
    299   1.84       wiz static void ParseDoInclude(char *);
    300   1.84       wiz static void ParseSetParseFile(char *);
    301    1.5       cgd #ifdef SYSVINCLUDE
    302   1.84       wiz static void ParseTraditionalInclude(char *);
    303    1.5       cgd #endif
    304   1.84       wiz static int ParseEOF(int);
    305   1.84       wiz static char *ParseReadLine(void);
    306   1.95     enami static char *ParseSkipLine(int, int);
    307   1.84       wiz static void ParseFinishLine(void);
    308   1.84       wiz static void ParseMark(GNode *);
    309    1.5       cgd 
    310   1.56  christos extern int  maxJobs;
    311   1.56  christos 
    312   1.77  christos 
    313   1.77  christos /*-
    314   1.77  christos  *----------------------------------------------------------------------
    315   1.77  christos  * ParseIsEscaped --
    316   1.77  christos  *	Check if the current character is escaped on the current line
    317   1.77  christos  *
    318   1.77  christos  * Results:
    319   1.77  christos  *	0 if the character is not backslash escaped, 1 otherwise
    320   1.77  christos  *
    321   1.77  christos  * Side Effects:
    322   1.77  christos  *	None
    323   1.77  christos  *----------------------------------------------------------------------
    324   1.77  christos  */
    325   1.77  christos static int
    326   1.84       wiz ParseIsEscaped(const char *line, const char *c)
    327   1.77  christos {
    328   1.77  christos     int active = 0;
    329   1.77  christos     for (;;) {
    330   1.77  christos 	if (line == c)
    331   1.77  christos 	    return active;
    332   1.77  christos 	if (*--c != '\\')
    333   1.77  christos 	    return active;
    334   1.77  christos 	active = !active;
    335   1.77  christos     }
    336   1.77  christos }
    337   1.77  christos 
    338    1.1       cgd /*-
    339    1.1       cgd  *----------------------------------------------------------------------
    340    1.1       cgd  * ParseFindKeyword --
    341    1.1       cgd  *	Look in the table of keywords for one matching the given string.
    342    1.1       cgd  *
    343   1.84       wiz  * Input:
    344   1.84       wiz  *	str		String to find
    345   1.84       wiz  *
    346    1.1       cgd  * Results:
    347    1.1       cgd  *	The index of the keyword, or -1 if it isn't there.
    348    1.1       cgd  *
    349    1.1       cgd  * Side Effects:
    350    1.1       cgd  *	None
    351    1.1       cgd  *----------------------------------------------------------------------
    352    1.1       cgd  */
    353    1.1       cgd static int
    354  1.120       dsl ParseFindKeyword(const char *str)
    355    1.1       cgd {
    356   1.84       wiz     int    start, end, cur;
    357   1.84       wiz     int    diff;
    358   1.27  christos 
    359    1.1       cgd     start = 0;
    360    1.1       cgd     end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1;
    361    1.1       cgd 
    362    1.1       cgd     do {
    363    1.1       cgd 	cur = start + ((end - start) / 2);
    364  1.103  christos 	diff = strcmp(str, parseKeywords[cur].name);
    365    1.1       cgd 
    366    1.1       cgd 	if (diff == 0) {
    367    1.1       cgd 	    return (cur);
    368    1.1       cgd 	} else if (diff < 0) {
    369    1.1       cgd 	    end = cur - 1;
    370    1.1       cgd 	} else {
    371    1.1       cgd 	    start = cur + 1;
    372    1.1       cgd 	}
    373    1.1       cgd     } while (start <= end);
    374    1.1       cgd     return (-1);
    375    1.1       cgd }
    376    1.1       cgd 
    377    1.1       cgd /*-
    378   1.38  christos  * ParseVErrorInternal  --
    379    1.1       cgd  *	Error message abort function for parsing. Prints out the context
    380    1.1       cgd  *	of the error (line number and file) as well as the message with
    381    1.1       cgd  *	two optional arguments.
    382    1.1       cgd  *
    383    1.1       cgd  * Results:
    384    1.1       cgd  *	None
    385    1.1       cgd  *
    386    1.1       cgd  * Side Effects:
    387    1.1       cgd  *	"fatals" is incremented if the level is PARSE_FATAL.
    388    1.1       cgd  */
    389    1.1       cgd /* VARARGS */
    390   1.38  christos static void
    391   1.93  christos ParseVErrorInternal(char *cfname, size_t clineno, int type, const char *fmt,
    392   1.38  christos     va_list ap)
    393   1.38  christos {
    394   1.56  christos 	static Boolean fatal_warning_error_printed = FALSE;
    395   1.56  christos 
    396   1.63  christos 	(void)fprintf(stderr, "%s: \"", progname);
    397   1.63  christos 
    398   1.55       sjg 	if (*cfname != '/') {
    399   1.93  christos 		char *cp;
    400   1.93  christos 		const char *dir;
    401   1.55       sjg 
    402   1.55       sjg 		/*
    403   1.55       sjg 		 * Nothing is more anoying than not knowing which Makefile
    404   1.55       sjg 		 * is the culprit.
    405   1.55       sjg 		 */
    406   1.55       sjg 		dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp);
    407   1.63  christos 		if (dir == NULL || *dir == '\0' ||
    408   1.55       sjg 		    (*dir == '.' && dir[1] == '\0'))
    409   1.55       sjg 			dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp);
    410   1.63  christos 		if (dir == NULL)
    411   1.63  christos 			dir = ".";
    412   1.55       sjg 
    413   1.63  christos 		(void)fprintf(stderr, "%s/%s", dir, cfname);
    414   1.55       sjg 	} else
    415   1.63  christos 		(void)fprintf(stderr, "%s", cfname);
    416   1.63  christos 
    417   1.63  christos 	(void)fprintf(stderr, "\" line %d: ", (int)clineno);
    418   1.38  christos 	if (type == PARSE_WARNING)
    419   1.38  christos 		(void)fprintf(stderr, "warning: ");
    420   1.38  christos 	(void)vfprintf(stderr, fmt, ap);
    421   1.38  christos 	(void)fprintf(stderr, "\n");
    422   1.38  christos 	(void)fflush(stderr);
    423   1.56  christos 	if (type == PARSE_FATAL || parseWarnFatal)
    424   1.38  christos 		fatals += 1;
    425   1.56  christos 	if (parseWarnFatal && !fatal_warning_error_printed) {
    426   1.56  christos 		Error("parsing warnings being treated as errors");
    427   1.56  christos 		fatal_warning_error_printed = TRUE;
    428   1.56  christos 	}
    429   1.38  christos }
    430   1.38  christos 
    431   1.38  christos /*-
    432   1.38  christos  * ParseErrorInternal  --
    433   1.38  christos  *	Error function
    434   1.38  christos  *
    435   1.38  christos  * Results:
    436   1.38  christos  *	None
    437   1.38  christos  *
    438   1.38  christos  * Side Effects:
    439   1.38  christos  *	None
    440   1.38  christos  */
    441   1.38  christos /* VARARGS */
    442   1.38  christos static void
    443   1.93  christos ParseErrorInternal(char *cfname, size_t clineno, int type, const char *fmt, ...)
    444   1.38  christos {
    445   1.38  christos 	va_list ap;
    446   1.84       wiz 
    447   1.38  christos 	va_start(ap, fmt);
    448   1.38  christos 	ParseVErrorInternal(cfname, clineno, type, fmt, ap);
    449   1.38  christos 	va_end(ap);
    450   1.38  christos }
    451   1.38  christos 
    452   1.38  christos /*-
    453   1.38  christos  * Parse_Error  --
    454   1.38  christos  *	External interface to ParseErrorInternal; uses the default filename
    455   1.38  christos  *	Line number.
    456   1.38  christos  *
    457   1.38  christos  * Results:
    458   1.38  christos  *	None
    459   1.38  christos  *
    460   1.38  christos  * Side Effects:
    461   1.38  christos  *	None
    462   1.38  christos  */
    463   1.38  christos /* VARARGS */
    464    1.1       cgd void
    465   1.93  christos Parse_Error(int type, const char *fmt, ...)
    466    1.1       cgd {
    467    1.1       cgd 	va_list ap;
    468   1.84       wiz 
    469    1.5       cgd 	va_start(ap, fmt);
    470   1.82   reinoud 	ParseVErrorInternal(curFile.fname, curFile.lineno, type, fmt, ap);
    471    1.1       cgd 	va_end(ap);
    472    1.1       cgd }
    473    1.1       cgd 
    474    1.1       cgd /*-
    475    1.1       cgd  *---------------------------------------------------------------------
    476    1.1       cgd  * ParseLinkSrc  --
    477    1.1       cgd  *	Link the parent node to its new child. Used in a Lst_ForEach by
    478    1.1       cgd  *	ParseDoDependency. If the specType isn't 'Not', the parent
    479    1.1       cgd  *	isn't linked as a parent of the child.
    480    1.1       cgd  *
    481   1.84       wiz  * Input:
    482   1.84       wiz  *	pgnp		The parent node
    483   1.84       wiz  *	cgpn		The child node
    484   1.84       wiz  *
    485    1.1       cgd  * Results:
    486    1.1       cgd  *	Always = 0
    487    1.1       cgd  *
    488    1.1       cgd  * Side Effects:
    489    1.1       cgd  *	New elements are added to the parents list of cgn and the
    490    1.1       cgd  *	children list of cgn. the unmade field of pgn is updated
    491    1.1       cgd  *	to reflect the additional child.
    492    1.1       cgd  *---------------------------------------------------------------------
    493    1.1       cgd  */
    494    1.1       cgd static int
    495   1.84       wiz ParseLinkSrc(ClientData pgnp, ClientData cgnp)
    496    1.1       cgd {
    497  1.105  christos     GNode          *pgn = (GNode *)pgnp;
    498  1.105  christos     GNode          *cgn = (GNode *)cgnp;
    499   1.52   mycroft 
    500   1.47   mycroft     if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts))
    501  1.103  christos 	pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts));
    502  1.119       dsl     (void)Lst_AtEnd(pgn->children, cgn);
    503   1.52   mycroft     if (specType == Not)
    504  1.119       dsl 	    (void)Lst_AtEnd(cgn->parents, pgn);
    505   1.52   mycroft     pgn->unmade += 1;
    506  1.109       dsl     if (DEBUG(PARSE)) {
    507  1.116       dsl 	fprintf(debug_file, "# ParseLinkSrc: added child %s - %s\n", pgn->name, cgn->name);
    508  1.109       dsl 	Targ_PrintNode(pgn, 0);
    509  1.109       dsl 	Targ_PrintNode(cgn, 0);
    510  1.109       dsl     }
    511    1.1       cgd     return (0);
    512    1.1       cgd }
    513    1.1       cgd 
    514    1.1       cgd /*-
    515    1.1       cgd  *---------------------------------------------------------------------
    516    1.1       cgd  * ParseDoOp  --
    517    1.1       cgd  *	Apply the parsed operator to the given target node. Used in a
    518    1.1       cgd  *	Lst_ForEach call by ParseDoDependency once all targets have
    519    1.1       cgd  *	been found and their operator parsed. If the previous and new
    520    1.1       cgd  *	operators are incompatible, a major error is taken.
    521    1.1       cgd  *
    522   1.84       wiz  * Input:
    523   1.84       wiz  *	gnp		The node to which the operator is to be applied
    524   1.84       wiz  *	opp		The operator to apply
    525   1.84       wiz  *
    526    1.1       cgd  * Results:
    527    1.1       cgd  *	Always 0
    528    1.1       cgd  *
    529    1.1       cgd  * Side Effects:
    530    1.1       cgd  *	The type field of the node is altered to reflect any new bits in
    531    1.1       cgd  *	the op.
    532    1.1       cgd  *---------------------------------------------------------------------
    533    1.1       cgd  */
    534    1.1       cgd static int
    535   1.84       wiz ParseDoOp(ClientData gnp, ClientData opp)
    536    1.1       cgd {
    537  1.105  christos     GNode          *gn = (GNode *)gnp;
    538  1.105  christos     int             op = *(int *)opp;
    539    1.1       cgd     /*
    540    1.1       cgd      * If the dependency mask of the operator and the node don't match and
    541    1.1       cgd      * the node has actually had an operator applied to it before, and
    542   1.27  christos      * the operator actually has some dependency information in it, complain.
    543    1.1       cgd      */
    544    1.1       cgd     if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) &&
    545    1.1       cgd 	!OP_NOP(gn->type) && !OP_NOP(op))
    546    1.1       cgd     {
    547   1.97  christos 	Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name);
    548    1.1       cgd 	return (1);
    549    1.1       cgd     }
    550    1.1       cgd 
    551    1.1       cgd     if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) {
    552    1.1       cgd 	/*
    553    1.1       cgd 	 * If the node was the object of a :: operator, we need to create a
    554    1.1       cgd 	 * new instance of it for the children and commands on this dependency
    555    1.1       cgd 	 * line. The new instance is placed on the 'cohorts' list of the
    556    1.1       cgd 	 * initial one (note the initial one is not on its own cohorts list)
    557    1.1       cgd 	 * and the new instance is linked to all parents of the initial
    558    1.1       cgd 	 * instance.
    559    1.1       cgd 	 */
    560   1.84       wiz 	GNode	*cohort;
    561   1.27  christos 
    562   1.33   mycroft 	/*
    563   1.46   mycroft 	 * Propagate copied bits to the initial node.  They'll be propagated
    564   1.46   mycroft 	 * back to the rest of the cohorts later.
    565   1.33   mycroft 	 */
    566   1.46   mycroft 	gn->type |= op & ~OP_OPMASK;
    567   1.33   mycroft 
    568  1.120       dsl 	cohort = Targ_FindNode(gn->name, TARG_NOHASH);
    569    1.1       cgd 	/*
    570    1.1       cgd 	 * Make the cohort invisible as well to avoid duplicating it into
    571    1.1       cgd 	 * other variables. True, parents of this target won't tend to do
    572    1.1       cgd 	 * anything with their local variables, but better safe than
    573   1.46   mycroft 	 * sorry. (I think this is pointless now, since the relevant list
    574   1.46   mycroft 	 * traversals will no longer see this node anyway. -mycroft)
    575    1.1       cgd 	 */
    576   1.46   mycroft 	cohort->type = op | OP_INVISIBLE;
    577  1.119       dsl 	(void)Lst_AtEnd(gn->cohorts, cohort);
    578   1.83        pk 	cohort->centurion = gn;
    579   1.83        pk 	gn->unmade_cohorts += 1;
    580  1.120       dsl 	snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d",
    581  1.120       dsl 		gn->unmade_cohorts);
    582   1.46   mycroft     } else {
    583    1.1       cgd 	/*
    584   1.46   mycroft 	 * We don't want to nuke any previous flags (whatever they were) so we
    585   1.46   mycroft 	 * just OR the new operator into the old
    586    1.1       cgd 	 */
    587   1.46   mycroft 	gn->type |= op;
    588    1.1       cgd     }
    589   1.33   mycroft 
    590    1.1       cgd     return (0);
    591    1.1       cgd }
    592    1.1       cgd 
    593   1.27  christos /*-
    594   1.18  christos  *---------------------------------------------------------------------
    595    1.1       cgd  * ParseDoSrc  --
    596    1.1       cgd  *	Given the name of a source, figure out if it is an attribute
    597    1.1       cgd  *	and apply it to the targets if it is. Else decide if there is
    598    1.1       cgd  *	some attribute which should be applied *to* the source because
    599    1.1       cgd  *	of some special target and apply it if so. Otherwise, make the
    600    1.1       cgd  *	source be a child of the targets in the list 'targets'
    601    1.1       cgd  *
    602   1.84       wiz  * Input:
    603   1.84       wiz  *	tOp		operator (if any) from special targets
    604   1.84       wiz  *	src		name of the source to handle
    605   1.84       wiz  *
    606    1.1       cgd  * Results:
    607    1.1       cgd  *	None
    608    1.1       cgd  *
    609    1.1       cgd  * Side Effects:
    610    1.1       cgd  *	Operator bits may be added to the list of targets or to the source.
    611    1.1       cgd  *	The targets may have a new source added to their lists of children.
    612    1.1       cgd  *---------------------------------------------------------------------
    613    1.1       cgd  */
    614    1.1       cgd static void
    615  1.120       dsl ParseDoSrc(int tOp, const char *src)
    616    1.1       cgd {
    617   1.18  christos     GNode	*gn = NULL;
    618  1.120       dsl     static int wait_number = 0;
    619  1.120       dsl     char wait_src[16];
    620    1.1       cgd 
    621   1.40  christos     if (*src == '.' && isupper ((unsigned char)src[1])) {
    622    1.1       cgd 	int keywd = ParseFindKeyword(src);
    623    1.1       cgd 	if (keywd != -1) {
    624   1.18  christos 	    int op = parseKeywords[keywd].op;
    625   1.18  christos 	    if (op != 0) {
    626  1.119       dsl 		Lst_ForEach(targets, ParseDoOp, &op);
    627   1.18  christos 		return;
    628   1.18  christos 	    }
    629   1.18  christos 	    if (parseKeywords[keywd].spec == Wait) {
    630  1.120       dsl 		/*
    631  1.120       dsl 		 * We add a .WAIT node in the dependency list.
    632  1.120       dsl 		 * After any dynamic dependencies (and filename globbing)
    633  1.120       dsl 		 * have happened, it is given a dependency on the each
    634  1.120       dsl 		 * previous child back to and previous .WAIT node.
    635  1.120       dsl 		 * The next child won't be scheduled until the .WAIT node
    636  1.120       dsl 		 * is built.
    637  1.120       dsl 		 * We give each .WAIT node a unique name (mainly for diag).
    638  1.120       dsl 		 */
    639  1.120       dsl 		snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number);
    640  1.120       dsl 		gn = Targ_FindNode(wait_src, TARG_NOHASH);
    641  1.120       dsl 		gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN;
    642  1.120       dsl 		Lst_ForEach(targets, ParseLinkSrc, gn);
    643   1.18  christos 		return;
    644   1.18  christos 	    }
    645    1.1       cgd 	}
    646    1.1       cgd     }
    647   1.18  christos 
    648   1.18  christos     switch (specType) {
    649   1.18  christos     case Main:
    650    1.1       cgd 	/*
    651    1.1       cgd 	 * If we have noted the existence of a .MAIN, it means we need
    652    1.1       cgd 	 * to add the sources of said target to the list of things
    653    1.1       cgd 	 * to create. The string 'src' is likely to be free, so we
    654    1.1       cgd 	 * must make a new copy of it. Note that this will only be
    655    1.1       cgd 	 * invoked if the user didn't specify a target on the command
    656    1.1       cgd 	 * line. This is to allow #ifmake's to succeed, or something...
    657    1.1       cgd 	 */
    658  1.119       dsl 	(void)Lst_AtEnd(create, estrdup(src));
    659    1.1       cgd 	/*
    660  1.118       dsl 	 * Add the name to the .TARGETS variable as well, so the user can
    661    1.1       cgd 	 * employ that, if desired.
    662    1.1       cgd 	 */
    663    1.1       cgd 	Var_Append(".TARGETS", src, VAR_GLOBAL);
    664   1.18  christos 	return;
    665   1.18  christos 
    666   1.18  christos     case Order:
    667    1.1       cgd 	/*
    668    1.1       cgd 	 * Create proper predecessor/successor links between the previous
    669    1.1       cgd 	 * source and the current one.
    670    1.1       cgd 	 */
    671    1.1       cgd 	gn = Targ_FindNode(src, TARG_CREATE);
    672    1.1       cgd 	if (predecessor != NILGNODE) {
    673  1.120       dsl 	    (void)Lst_AtEnd(predecessor->order_succ, gn);
    674  1.120       dsl 	    (void)Lst_AtEnd(gn->order_pred, predecessor);
    675  1.109       dsl 	    if (DEBUG(PARSE)) {
    676  1.116       dsl 		fprintf(debug_file, "# ParseDoSrc: added Order dependency %s - %s\n",
    677  1.109       dsl 			predecessor->name, gn->name);
    678  1.109       dsl 		Targ_PrintNode(predecessor, 0);
    679  1.109       dsl 		Targ_PrintNode(gn, 0);
    680  1.109       dsl 	    }
    681    1.1       cgd 	}
    682    1.1       cgd 	/*
    683    1.1       cgd 	 * The current source now becomes the predecessor for the next one.
    684    1.1       cgd 	 */
    685    1.1       cgd 	predecessor = gn;
    686   1.18  christos 	break;
    687   1.18  christos 
    688   1.18  christos     default:
    689    1.1       cgd 	/*
    690    1.1       cgd 	 * If the source is not an attribute, we need to find/create
    691    1.1       cgd 	 * a node for it. After that we can apply any operator to it
    692    1.1       cgd 	 * from a special target or link it to its parents, as
    693    1.1       cgd 	 * appropriate.
    694    1.1       cgd 	 *
    695    1.1       cgd 	 * In the case of a source that was the object of a :: operator,
    696    1.1       cgd 	 * the attribute is applied to all of its instances (as kept in
    697    1.1       cgd 	 * the 'cohorts' list of the node) or all the cohorts are linked
    698    1.1       cgd 	 * to all the targets.
    699    1.1       cgd 	 */
    700  1.118       dsl 
    701  1.118       dsl 	/* Find/create the 'src' node and attach to all targets */
    702   1.97  christos 	gn = Targ_FindNode(src, TARG_CREATE);
    703    1.1       cgd 	if (tOp) {
    704    1.1       cgd 	    gn->type |= tOp;
    705    1.1       cgd 	} else {
    706  1.119       dsl 	    Lst_ForEach(targets, ParseLinkSrc, gn);
    707    1.1       cgd 	}
    708   1.18  christos 	break;
    709   1.18  christos     }
    710    1.1       cgd }
    711    1.1       cgd 
    712    1.1       cgd /*-
    713    1.1       cgd  *-----------------------------------------------------------------------
    714    1.1       cgd  * ParseFindMain --
    715    1.1       cgd  *	Find a real target in the list and set it to be the main one.
    716    1.1       cgd  *	Called by ParseDoDependency when a main target hasn't been found
    717    1.1       cgd  *	yet.
    718    1.1       cgd  *
    719   1.84       wiz  * Input:
    720   1.84       wiz  *	gnp		Node to examine
    721   1.84       wiz  *
    722    1.1       cgd  * Results:
    723    1.1       cgd  *	0 if main not found yet, 1 if it is.
    724    1.1       cgd  *
    725    1.1       cgd  * Side Effects:
    726    1.1       cgd  *	mainNode is changed and Targ_SetMain is called.
    727    1.1       cgd  *
    728    1.1       cgd  *-----------------------------------------------------------------------
    729    1.1       cgd  */
    730    1.1       cgd static int
    731   1.84       wiz ParseFindMain(ClientData gnp, ClientData dummy)
    732    1.1       cgd {
    733  1.105  christos     GNode   	  *gn = (GNode *)gnp;
    734   1.30  christos     if ((gn->type & OP_NOTARGET) == 0) {
    735    1.1       cgd 	mainNode = gn;
    736    1.1       cgd 	Targ_SetMain(gn);
    737    1.9       jtc 	return (dummy ? 1 : 1);
    738    1.1       cgd     } else {
    739    1.9       jtc 	return (dummy ? 0 : 0);
    740    1.1       cgd     }
    741    1.1       cgd }
    742    1.1       cgd 
    743    1.1       cgd /*-
    744    1.1       cgd  *-----------------------------------------------------------------------
    745    1.1       cgd  * ParseAddDir --
    746    1.1       cgd  *	Front-end for Dir_AddDir to make sure Lst_ForEach keeps going
    747    1.1       cgd  *
    748    1.1       cgd  * Results:
    749    1.1       cgd  *	=== 0
    750    1.1       cgd  *
    751    1.1       cgd  * Side Effects:
    752    1.1       cgd  *	See Dir_AddDir.
    753    1.1       cgd  *
    754    1.1       cgd  *-----------------------------------------------------------------------
    755    1.1       cgd  */
    756    1.1       cgd static int
    757   1.84       wiz ParseAddDir(ClientData path, ClientData name)
    758    1.1       cgd {
    759  1.105  christos     (void)Dir_AddDir((Lst) path, (char *)name);
    760    1.1       cgd     return(0);
    761    1.1       cgd }
    762    1.1       cgd 
    763    1.1       cgd /*-
    764    1.1       cgd  *-----------------------------------------------------------------------
    765    1.1       cgd  * ParseClearPath --
    766    1.1       cgd  *	Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going
    767    1.1       cgd  *
    768    1.1       cgd  * Results:
    769    1.1       cgd  *	=== 0
    770    1.1       cgd  *
    771    1.1       cgd  * Side Effects:
    772    1.1       cgd  *	See Dir_ClearPath
    773    1.1       cgd  *
    774    1.1       cgd  *-----------------------------------------------------------------------
    775    1.1       cgd  */
    776    1.1       cgd static int
    777   1.84       wiz ParseClearPath(ClientData path, ClientData dummy)
    778    1.1       cgd {
    779    1.9       jtc     Dir_ClearPath((Lst) path);
    780    1.9       jtc     return(dummy ? 0 : 0);
    781    1.1       cgd }
    782    1.1       cgd 
    783    1.1       cgd /*-
    784    1.1       cgd  *---------------------------------------------------------------------
    785    1.1       cgd  * ParseDoDependency  --
    786    1.1       cgd  *	Parse the dependency line in line.
    787    1.1       cgd  *
    788   1.84       wiz  * Input:
    789   1.84       wiz  *	line		the line to parse
    790   1.84       wiz  *
    791    1.1       cgd  * Results:
    792    1.1       cgd  *	None
    793    1.1       cgd  *
    794    1.1       cgd  * Side Effects:
    795    1.1       cgd  *	The nodes of the sources are linked as children to the nodes of the
    796    1.1       cgd  *	targets. Some nodes may be created.
    797    1.1       cgd  *
    798    1.1       cgd  *	We parse a dependency line by first extracting words from the line and
    799    1.1       cgd  * finding nodes in the list of all targets with that name. This is done
    800    1.1       cgd  * until a character is encountered which is an operator character. Currently
    801    1.1       cgd  * these are only ! and :. At this point the operator is parsed and the
    802    1.1       cgd  * pointer into the line advanced until the first source is encountered.
    803    1.1       cgd  * 	The parsed operator is applied to each node in the 'targets' list,
    804    1.1       cgd  * which is where the nodes found for the targets are kept, by means of
    805    1.1       cgd  * the ParseDoOp function.
    806    1.1       cgd  *	The sources are read in much the same way as the targets were except
    807    1.1       cgd  * that now they are expanded using the wildcarding scheme of the C-Shell
    808    1.1       cgd  * and all instances of the resulting words in the list of all targets
    809    1.1       cgd  * are found. Each of the resulting nodes is then linked to each of the
    810    1.1       cgd  * targets as one of its children.
    811    1.1       cgd  *	Certain targets are handled specially. These are the ones detailed
    812    1.1       cgd  * by the specType variable.
    813    1.1       cgd  *	The storing of transformation rules is also taken care of here.
    814    1.1       cgd  * A target is recognized as a transformation rule by calling
    815    1.1       cgd  * Suff_IsTransform. If it is a transformation rule, its node is gotten
    816    1.1       cgd  * from the suffix module via Suff_AddTransform rather than the standard
    817    1.1       cgd  * Targ_FindNode in the target module.
    818    1.1       cgd  *---------------------------------------------------------------------
    819    1.1       cgd  */
    820    1.1       cgd static void
    821   1.84       wiz ParseDoDependency(char *line)
    822    1.1       cgd {
    823    1.9       jtc     char  	   *cp;		/* our current position */
    824   1.98  christos     GNode 	   *gn = NULL;	/* a general purpose temporary node */
    825    1.9       jtc     int             op;		/* the operator on the line */
    826    1.1       cgd     char            savec;	/* a place to save a character */
    827    1.1       cgd     Lst    	    paths;   	/* List of search paths to alter when parsing
    828    1.1       cgd 				 * a list of .PATH targets */
    829    1.1       cgd     int	    	    tOp;    	/* operator from special target */
    830   1.18  christos     Lst	    	    sources;	/* list of archive source names after
    831   1.18  christos 				 * expansion */
    832    1.1       cgd     Lst 	    curTargs;	/* list of target names to be found and added
    833    1.1       cgd 				 * to the targets list */
    834   1.77  christos     char	   *lstart = line;
    835    1.1       cgd 
    836  1.120       dsl     if (DEBUG(PARSE))
    837  1.120       dsl 	fprintf(debug_file, "ParseDoDependency(%s)\n", line);
    838    1.1       cgd     tOp = 0;
    839    1.1       cgd 
    840    1.1       cgd     specType = Not;
    841    1.1       cgd     paths = (Lst)NULL;
    842    1.1       cgd 
    843    1.1       cgd     curTargs = Lst_Init(FALSE);
    844   1.27  christos 
    845    1.1       cgd     do {
    846  1.121       dsl 	for (cp = line; *cp && (ParseIsEscaped(lstart, cp) ||
    847  1.121       dsl 		     !(isspace((unsigned char)*cp) ||
    848  1.121       dsl 			 *cp == '!' || *cp == ':' || *cp == LPAREN));
    849  1.121       dsl 		 cp++) {
    850    1.1       cgd 	    if (*cp == '$') {
    851    1.1       cgd 		/*
    852    1.1       cgd 		 * Must be a dynamic source (would have been expanded
    853    1.1       cgd 		 * otherwise), so call the Var module to parse the puppy
    854    1.1       cgd 		 * so we can safely advance beyond it...There should be
    855    1.1       cgd 		 * no errors in this, as they would have been discovered
    856    1.1       cgd 		 * in the initial Var_Subst and we wouldn't be here.
    857    1.1       cgd 		 */
    858    1.1       cgd 		int 	length;
    859  1.114  christos 		void    *freeIt;
    860    1.1       cgd 		char	*result;
    861    1.1       cgd 
    862  1.114  christos 		result = Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt);
    863  1.114  christos 		if (freeIt)
    864  1.114  christos 		    free(freeIt);
    865    1.1       cgd 		cp += length-1;
    866    1.1       cgd 	    }
    867    1.1       cgd 	}
    868  1.121       dsl 
    869   1.77  christos 	if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) {
    870    1.1       cgd 	    /*
    871    1.1       cgd 	     * Archives must be handled specially to make sure the OP_ARCHV
    872    1.1       cgd 	     * flag is set in their 'type' field, for one thing, and because
    873    1.1       cgd 	     * things like "archive(file1.o file2.o file3.o)" are permissible.
    874    1.1       cgd 	     * Arch_ParseArchive will set 'line' to be the first non-blank
    875    1.1       cgd 	     * after the archive-spec. It creates/finds nodes for the members
    876    1.1       cgd 	     * and places them on the given list, returning SUCCESS if all
    877    1.1       cgd 	     * went well and FAILURE if there was an error in the
    878    1.1       cgd 	     * specification. On error, line should remain untouched.
    879    1.1       cgd 	     */
    880   1.97  christos 	    if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) {
    881   1.97  christos 		Parse_Error(PARSE_FATAL,
    882    1.1       cgd 			     "Error in archive specification: \"%s\"", line);
    883  1.112  christos 		goto out;
    884    1.1       cgd 	    } else {
    885    1.1       cgd 		continue;
    886    1.1       cgd 	    }
    887    1.1       cgd 	}
    888    1.1       cgd 	savec = *cp;
    889   1.27  christos 
    890    1.1       cgd 	if (!*cp) {
    891    1.1       cgd 	    /*
    892    1.1       cgd 	     * Ending a dependency line without an operator is a Bozo
    893   1.65  sommerfe 	     * no-no.  As a heuristic, this is also often triggered by
    894   1.65  sommerfe 	     * undetected conflicts from cvs/rcs merges.
    895    1.1       cgd 	     */
    896   1.65  sommerfe 	    if ((strncmp(line, "<<<<<<", 6) == 0) ||
    897   1.65  sommerfe 		(strncmp(line, "======", 6) == 0) ||
    898   1.65  sommerfe 		(strncmp(line, ">>>>>>", 6) == 0))
    899   1.97  christos 		Parse_Error(PARSE_FATAL,
    900   1.67  sommerfe 		    "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts");
    901   1.65  sommerfe 	    else
    902   1.97  christos 		Parse_Error(PARSE_FATAL, "Need an operator");
    903  1.112  christos 	    goto out;
    904    1.1       cgd 	}
    905    1.1       cgd 	*cp = '\0';
    906  1.118       dsl 
    907    1.1       cgd 	/*
    908    1.1       cgd 	 * Have a word in line. See if it's a special target and set
    909    1.1       cgd 	 * specType to match it.
    910    1.1       cgd 	 */
    911   1.40  christos 	if (*line == '.' && isupper ((unsigned char)line[1])) {
    912    1.1       cgd 	    /*
    913    1.1       cgd 	     * See if the target is a special target that must have it
    914   1.27  christos 	     * or its sources handled specially.
    915    1.1       cgd 	     */
    916    1.1       cgd 	    int keywd = ParseFindKeyword(line);
    917    1.1       cgd 	    if (keywd != -1) {
    918    1.5       cgd 		if (specType == ExPath && parseKeywords[keywd].spec != ExPath) {
    919    1.1       cgd 		    Parse_Error(PARSE_FATAL, "Mismatched special targets");
    920  1.112  christos 		    goto out;
    921    1.1       cgd 		}
    922   1.27  christos 
    923    1.1       cgd 		specType = parseKeywords[keywd].spec;
    924    1.1       cgd 		tOp = parseKeywords[keywd].op;
    925    1.1       cgd 
    926    1.1       cgd 		/*
    927    1.1       cgd 		 * Certain special targets have special semantics:
    928    1.1       cgd 		 *	.PATH		Have to set the dirSearchPath
    929    1.1       cgd 		 *			variable too
    930    1.1       cgd 		 *	.MAIN		Its sources are only used if
    931    1.1       cgd 		 *			nothing has been specified to
    932    1.1       cgd 		 *			create.
    933    1.1       cgd 		 *	.DEFAULT    	Need to create a node to hang
    934    1.1       cgd 		 *			commands on, but we don't want
    935    1.1       cgd 		 *			it in the graph, nor do we want
    936    1.1       cgd 		 *			it to be the Main Target, so we
    937    1.1       cgd 		 *			create it, set OP_NOTMAIN and
    938    1.1       cgd 		 *			add it to the list, setting
    939    1.1       cgd 		 *			DEFAULT to the new node for
    940    1.1       cgd 		 *			later use. We claim the node is
    941    1.1       cgd 		 *	    	    	A transformation rule to make
    942    1.1       cgd 		 *	    	    	life easier later, when we'll
    943    1.1       cgd 		 *	    	    	use Make_HandleUse to actually
    944    1.1       cgd 		 *	    	    	apply the .DEFAULT commands.
    945   1.22  christos 		 *	.PHONY		The list of targets
    946   1.32       gwr 		 *	.NOPATH		Don't search for file in the path
    947    1.1       cgd 		 *	.BEGIN
    948    1.1       cgd 		 *	.END
    949    1.1       cgd 		 *	.INTERRUPT  	Are not to be considered the
    950    1.1       cgd 		 *			main target.
    951    1.1       cgd 		 *  	.NOTPARALLEL	Make only one target at a time.
    952    1.1       cgd 		 *  	.SINGLESHELL	Create a shell for each command.
    953    1.1       cgd 		 *  	.ORDER	    	Must set initial predecessor to NIL
    954    1.1       cgd 		 */
    955    1.1       cgd 		switch (specType) {
    956    1.5       cgd 		    case ExPath:
    957    1.1       cgd 			if (paths == NULL) {
    958    1.1       cgd 			    paths = Lst_Init(FALSE);
    959    1.1       cgd 			}
    960  1.119       dsl 			(void)Lst_AtEnd(paths, dirSearchPath);
    961    1.1       cgd 			break;
    962    1.1       cgd 		    case Main:
    963    1.1       cgd 			if (!Lst_IsEmpty(create)) {
    964    1.1       cgd 			    specType = Not;
    965    1.1       cgd 			}
    966    1.1       cgd 			break;
    967    1.1       cgd 		    case Begin:
    968    1.1       cgd 		    case End:
    969    1.1       cgd 		    case Interrupt:
    970    1.1       cgd 			gn = Targ_FindNode(line, TARG_CREATE);
    971   1.99  christos 			gn->type |= OP_NOTMAIN|OP_SPECIAL;
    972  1.119       dsl 			(void)Lst_AtEnd(targets, gn);
    973    1.1       cgd 			break;
    974    1.1       cgd 		    case Default:
    975    1.1       cgd 			gn = Targ_NewGN(".DEFAULT");
    976    1.1       cgd 			gn->type |= (OP_NOTMAIN|OP_TRANSFORM);
    977  1.119       dsl 			(void)Lst_AtEnd(targets, gn);
    978    1.1       cgd 			DEFAULT = gn;
    979    1.1       cgd 			break;
    980    1.1       cgd 		    case NotParallel:
    981  1.113       dsl 			maxJobs = 1;
    982    1.1       cgd 			break;
    983    1.1       cgd 		    case SingleShell:
    984   1.54  sommerfe 			compatMake = TRUE;
    985    1.1       cgd 			break;
    986    1.1       cgd 		    case Order:
    987    1.1       cgd 			predecessor = NILGNODE;
    988    1.1       cgd 			break;
    989    1.5       cgd 		    default:
    990    1.5       cgd 			break;
    991    1.1       cgd 		}
    992  1.103  christos 	    } else if (strncmp(line, ".PATH", 5) == 0) {
    993    1.1       cgd 		/*
    994    1.1       cgd 		 * .PATH<suffix> has to be handled specially.
    995    1.1       cgd 		 * Call on the suffix module to give us a path to
    996    1.1       cgd 		 * modify.
    997    1.1       cgd 		 */
    998    1.1       cgd 		Lst 	path;
    999   1.27  christos 
   1000    1.5       cgd 		specType = ExPath;
   1001   1.97  christos 		path = Suff_GetPath(&line[5]);
   1002    1.1       cgd 		if (path == NILLST) {
   1003   1.97  christos 		    Parse_Error(PARSE_FATAL,
   1004    1.1       cgd 				 "Suffix '%s' not defined (yet)",
   1005    1.1       cgd 				 &line[5]);
   1006  1.112  christos 		    goto out;
   1007    1.1       cgd 		} else {
   1008    1.1       cgd 		    if (paths == (Lst)NULL) {
   1009    1.1       cgd 			paths = Lst_Init(FALSE);
   1010    1.1       cgd 		    }
   1011  1.119       dsl 		    (void)Lst_AtEnd(paths, path);
   1012    1.1       cgd 		}
   1013    1.1       cgd 	    }
   1014    1.1       cgd 	}
   1015   1.27  christos 
   1016    1.1       cgd 	/*
   1017    1.1       cgd 	 * Have word in line. Get or create its node and stick it at
   1018   1.27  christos 	 * the end of the targets list
   1019    1.1       cgd 	 */
   1020    1.1       cgd 	if ((specType == Not) && (*line != '\0')) {
   1021    1.1       cgd 	    if (Dir_HasWildcards(line)) {
   1022    1.1       cgd 		/*
   1023    1.1       cgd 		 * Targets are to be sought only in the current directory,
   1024    1.1       cgd 		 * so create an empty path for the thing. Note we need to
   1025    1.1       cgd 		 * use Dir_Destroy in the destruction of the path as the
   1026    1.1       cgd 		 * Dir module could have added a directory to the path...
   1027    1.1       cgd 		 */
   1028    1.1       cgd 		Lst	    emptyPath = Lst_Init(FALSE);
   1029   1.27  christos 
   1030    1.1       cgd 		Dir_Expand(line, emptyPath, curTargs);
   1031   1.27  christos 
   1032    1.1       cgd 		Lst_Destroy(emptyPath, Dir_Destroy);
   1033    1.1       cgd 	    } else {
   1034    1.1       cgd 		/*
   1035    1.1       cgd 		 * No wildcards, but we want to avoid code duplication,
   1036    1.1       cgd 		 * so create a list with the word on it.
   1037    1.1       cgd 		 */
   1038  1.119       dsl 		(void)Lst_AtEnd(curTargs, line);
   1039    1.1       cgd 	    }
   1040   1.27  christos 
   1041    1.1       cgd 	    while(!Lst_IsEmpty(curTargs)) {
   1042    1.1       cgd 		char	*targName = (char *)Lst_DeQueue(curTargs);
   1043   1.27  christos 
   1044    1.1       cgd 		if (!Suff_IsTransform (targName)) {
   1045   1.97  christos 		    gn = Targ_FindNode(targName, TARG_CREATE);
   1046    1.1       cgd 		} else {
   1047   1.97  christos 		    gn = Suff_AddTransform(targName);
   1048    1.1       cgd 		}
   1049   1.27  christos 
   1050  1.119       dsl 		(void)Lst_AtEnd(targets, gn);
   1051    1.1       cgd 	    }
   1052    1.5       cgd 	} else if (specType == ExPath && *line != '.' && *line != '\0') {
   1053    1.1       cgd 	    Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line);
   1054    1.1       cgd 	}
   1055   1.27  christos 
   1056    1.1       cgd 	*cp = savec;
   1057    1.1       cgd 	/*
   1058    1.1       cgd 	 * If it is a special type and not .PATH, it's the only target we
   1059    1.1       cgd 	 * allow on this line...
   1060    1.1       cgd 	 */
   1061    1.5       cgd 	if (specType != Not && specType != ExPath) {
   1062  1.115  christos 	    Boolean warning = FALSE;
   1063   1.27  christos 
   1064   1.77  christos 	    while (*cp && (ParseIsEscaped(lstart, cp) ||
   1065   1.77  christos 		((*cp != '!') && (*cp != ':')))) {
   1066   1.77  christos 		if (ParseIsEscaped(lstart, cp) ||
   1067   1.77  christos 		    (*cp != ' ' && *cp != '\t')) {
   1068  1.115  christos 		    warning = TRUE;
   1069    1.1       cgd 		}
   1070    1.1       cgd 		cp++;
   1071    1.1       cgd 	    }
   1072  1.115  christos 	    if (warning) {
   1073    1.1       cgd 		Parse_Error(PARSE_WARNING, "Extra target ignored");
   1074    1.1       cgd 	    }
   1075    1.1       cgd 	} else {
   1076   1.40  christos 	    while (*cp && isspace ((unsigned char)*cp)) {
   1077    1.1       cgd 		cp++;
   1078    1.1       cgd 	    }
   1079    1.1       cgd 	}
   1080    1.1       cgd 	line = cp;
   1081   1.77  christos     } while (*line && (ParseIsEscaped(lstart, line) ||
   1082   1.77  christos 	((*line != '!') && (*line != ':'))));
   1083    1.1       cgd 
   1084    1.1       cgd     /*
   1085    1.1       cgd      * Don't need the list of target names anymore...
   1086    1.1       cgd      */
   1087    1.1       cgd     Lst_Destroy(curTargs, NOFREE);
   1088  1.112  christos     curTargs = NULL;
   1089    1.1       cgd 
   1090    1.1       cgd     if (!Lst_IsEmpty(targets)) {
   1091    1.1       cgd 	switch(specType) {
   1092    1.1       cgd 	    default:
   1093    1.1       cgd 		Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored");
   1094    1.1       cgd 		break;
   1095    1.1       cgd 	    case Default:
   1096    1.1       cgd 	    case Begin:
   1097    1.1       cgd 	    case End:
   1098    1.1       cgd 	    case Interrupt:
   1099    1.1       cgd 		/*
   1100    1.1       cgd 		 * These four create nodes on which to hang commands, so
   1101    1.1       cgd 		 * targets shouldn't be empty...
   1102    1.1       cgd 		 */
   1103    1.1       cgd 	    case Not:
   1104    1.1       cgd 		/*
   1105    1.1       cgd 		 * Nothing special here -- targets can be empty if it wants.
   1106    1.1       cgd 		 */
   1107    1.1       cgd 		break;
   1108    1.1       cgd 	}
   1109    1.1       cgd     }
   1110    1.1       cgd 
   1111    1.1       cgd     /*
   1112    1.1       cgd      * Have now parsed all the target names. Must parse the operator next. The
   1113    1.1       cgd      * result is left in  op .
   1114    1.1       cgd      */
   1115    1.1       cgd     if (*cp == '!') {
   1116    1.1       cgd 	op = OP_FORCE;
   1117    1.1       cgd     } else if (*cp == ':') {
   1118    1.1       cgd 	if (cp[1] == ':') {
   1119    1.1       cgd 	    op = OP_DOUBLEDEP;
   1120    1.1       cgd 	    cp++;
   1121    1.1       cgd 	} else {
   1122    1.1       cgd 	    op = OP_DEPENDS;
   1123    1.1       cgd 	}
   1124    1.1       cgd     } else {
   1125   1.97  christos 	Parse_Error(PARSE_FATAL, "Missing dependency operator");
   1126  1.112  christos 	goto out;
   1127    1.1       cgd     }
   1128    1.1       cgd 
   1129    1.1       cgd     cp++;			/* Advance beyond operator */
   1130    1.1       cgd 
   1131  1.119       dsl     Lst_ForEach(targets, ParseDoOp, &op);
   1132    1.1       cgd 
   1133    1.1       cgd     /*
   1134   1.27  christos      * Get to the first source
   1135    1.1       cgd      */
   1136   1.40  christos     while (*cp && isspace ((unsigned char)*cp)) {
   1137    1.1       cgd 	cp++;
   1138    1.1       cgd     }
   1139    1.1       cgd     line = cp;
   1140    1.1       cgd 
   1141    1.1       cgd     /*
   1142    1.1       cgd      * Several special targets take different actions if present with no
   1143    1.1       cgd      * sources:
   1144    1.1       cgd      *	a .SUFFIXES line with no sources clears out all old suffixes
   1145    1.1       cgd      *	a .PRECIOUS line makes all targets precious
   1146    1.1       cgd      *	a .IGNORE line ignores errors for all targets
   1147    1.1       cgd      *	a .SILENT line creates silence when making all targets
   1148    1.1       cgd      *	a .PATH removes all directories from the search path(s).
   1149    1.1       cgd      */
   1150    1.1       cgd     if (!*line) {
   1151    1.1       cgd 	switch (specType) {
   1152    1.1       cgd 	    case Suffixes:
   1153   1.97  christos 		Suff_ClearSuffixes();
   1154    1.1       cgd 		break;
   1155    1.1       cgd 	    case Precious:
   1156    1.1       cgd 		allPrecious = TRUE;
   1157    1.1       cgd 		break;
   1158    1.1       cgd 	    case Ignore:
   1159    1.1       cgd 		ignoreErrors = TRUE;
   1160    1.1       cgd 		break;
   1161    1.1       cgd 	    case Silent:
   1162    1.1       cgd 		beSilent = TRUE;
   1163    1.1       cgd 		break;
   1164    1.5       cgd 	    case ExPath:
   1165  1.119       dsl 		Lst_ForEach(paths, ParseClearPath, NULL);
   1166   1.85       sjg 		Dir_SetPATH();
   1167    1.1       cgd 		break;
   1168   1.48       sjg #ifdef POSIX
   1169   1.48       sjg             case Posix:
   1170   1.70       sjg                 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0);
   1171   1.48       sjg                 break;
   1172   1.48       sjg #endif
   1173    1.5       cgd 	    default:
   1174    1.5       cgd 		break;
   1175    1.1       cgd 	}
   1176    1.1       cgd     } else if (specType == MFlags) {
   1177    1.1       cgd 	/*
   1178    1.1       cgd 	 * Call on functions in main.c to deal with these arguments and
   1179    1.1       cgd 	 * set the initial character to a null-character so the loop to
   1180    1.1       cgd 	 * get sources won't get anything
   1181    1.1       cgd 	 */
   1182   1.97  christos 	Main_ParseArgLine(line);
   1183    1.1       cgd 	*line = '\0';
   1184    1.5       cgd     } else if (specType == ExShell) {
   1185   1.97  christos 	if (Job_ParseShell(line) != SUCCESS) {
   1186   1.97  christos 	    Parse_Error(PARSE_FATAL, "improper shell specification");
   1187  1.112  christos 	    goto out;
   1188    1.1       cgd 	}
   1189    1.1       cgd 	*line = '\0';
   1190    1.1       cgd     } else if ((specType == NotParallel) || (specType == SingleShell)) {
   1191    1.1       cgd 	*line = '\0';
   1192    1.1       cgd     }
   1193   1.27  christos 
   1194    1.1       cgd     /*
   1195   1.27  christos      * NOW GO FOR THE SOURCES
   1196    1.1       cgd      */
   1197    1.5       cgd     if ((specType == Suffixes) || (specType == ExPath) ||
   1198    1.1       cgd 	(specType == Includes) || (specType == Libs) ||
   1199   1.75        tv 	(specType == Null) || (specType == ExObjdir))
   1200    1.1       cgd     {
   1201    1.1       cgd 	while (*line) {
   1202    1.1       cgd 	    /*
   1203    1.1       cgd 	     * If the target was one that doesn't take files as its sources
   1204    1.1       cgd 	     * but takes something like suffixes, we take each
   1205    1.1       cgd 	     * space-separated word on the line as a something and deal
   1206    1.1       cgd 	     * with it accordingly.
   1207    1.1       cgd 	     *
   1208    1.1       cgd 	     * If the target was .SUFFIXES, we take each source as a
   1209    1.1       cgd 	     * suffix and add it to the list of suffixes maintained by the
   1210    1.1       cgd 	     * Suff module.
   1211    1.1       cgd 	     *
   1212    1.1       cgd 	     * If the target was a .PATH, we add the source as a directory
   1213    1.1       cgd 	     * to search on the search path.
   1214    1.1       cgd 	     *
   1215    1.1       cgd 	     * If it was .INCLUDES, the source is taken to be the suffix of
   1216    1.1       cgd 	     * files which will be #included and whose search path should
   1217    1.1       cgd 	     * be present in the .INCLUDES variable.
   1218    1.1       cgd 	     *
   1219    1.1       cgd 	     * If it was .LIBS, the source is taken to be the suffix of
   1220    1.1       cgd 	     * files which are considered libraries and whose search path
   1221    1.1       cgd 	     * should be present in the .LIBS variable.
   1222    1.1       cgd 	     *
   1223    1.1       cgd 	     * If it was .NULL, the source is the suffix to use when a file
   1224    1.1       cgd 	     * has no valid suffix.
   1225   1.75        tv 	     *
   1226   1.75        tv 	     * If it was .OBJDIR, the source is a new definition for .OBJDIR,
   1227   1.75        tv 	     * and will cause make to do a new chdir to that path.
   1228    1.1       cgd 	     */
   1229   1.40  christos 	    while (*cp && !isspace ((unsigned char)*cp)) {
   1230    1.1       cgd 		cp++;
   1231    1.1       cgd 	    }
   1232    1.1       cgd 	    savec = *cp;
   1233    1.1       cgd 	    *cp = '\0';
   1234    1.1       cgd 	    switch (specType) {
   1235    1.1       cgd 		case Suffixes:
   1236   1.97  christos 		    Suff_AddSuffix(line, &mainNode);
   1237    1.1       cgd 		    break;
   1238    1.5       cgd 		case ExPath:
   1239  1.119       dsl 		    Lst_ForEach(paths, ParseAddDir, line);
   1240    1.1       cgd 		    break;
   1241    1.1       cgd 		case Includes:
   1242   1.97  christos 		    Suff_AddInclude(line);
   1243    1.1       cgd 		    break;
   1244    1.1       cgd 		case Libs:
   1245   1.97  christos 		    Suff_AddLib(line);
   1246    1.1       cgd 		    break;
   1247    1.1       cgd 		case Null:
   1248   1.97  christos 		    Suff_SetNull(line);
   1249   1.75        tv 		    break;
   1250   1.75        tv 		case ExObjdir:
   1251   1.75        tv 		    Main_SetObjdir(line);
   1252    1.1       cgd 		    break;
   1253    1.5       cgd 		default:
   1254    1.5       cgd 		    break;
   1255    1.1       cgd 	    }
   1256    1.1       cgd 	    *cp = savec;
   1257    1.1       cgd 	    if (savec != '\0') {
   1258    1.1       cgd 		cp++;
   1259    1.1       cgd 	    }
   1260   1.40  christos 	    while (*cp && isspace ((unsigned char)*cp)) {
   1261    1.1       cgd 		cp++;
   1262    1.1       cgd 	    }
   1263    1.1       cgd 	    line = cp;
   1264    1.1       cgd 	}
   1265    1.1       cgd 	if (paths) {
   1266    1.1       cgd 	    Lst_Destroy(paths, NOFREE);
   1267    1.1       cgd 	}
   1268   1.85       sjg 	if (specType == ExPath)
   1269   1.85       sjg 	    Dir_SetPATH();
   1270    1.1       cgd     } else {
   1271    1.1       cgd 	while (*line) {
   1272    1.1       cgd 	    /*
   1273    1.1       cgd 	     * The targets take real sources, so we must beware of archive
   1274    1.1       cgd 	     * specifications (i.e. things with left parentheses in them)
   1275    1.1       cgd 	     * and handle them accordingly.
   1276    1.1       cgd 	     */
   1277  1.118       dsl 	    for (; *cp && !isspace ((unsigned char)*cp); cp++) {
   1278   1.77  christos 		if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) {
   1279    1.1       cgd 		    /*
   1280    1.1       cgd 		     * Only stop for a left parenthesis if it isn't at the
   1281    1.1       cgd 		     * start of a word (that'll be for variable changes
   1282    1.1       cgd 		     * later) and isn't preceded by a dollar sign (a dynamic
   1283    1.1       cgd 		     * source).
   1284    1.1       cgd 		     */
   1285    1.1       cgd 		    break;
   1286    1.1       cgd 		}
   1287    1.1       cgd 	    }
   1288    1.1       cgd 
   1289   1.77  christos 	    if (*cp == LPAREN) {
   1290   1.97  christos 		sources = Lst_Init(FALSE);
   1291   1.97  christos 		if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) {
   1292   1.97  christos 		    Parse_Error(PARSE_FATAL,
   1293    1.1       cgd 				 "Error in source archive spec \"%s\"", line);
   1294  1.112  christos 		    goto out;
   1295    1.1       cgd 		}
   1296    1.1       cgd 
   1297    1.1       cgd 		while (!Lst_IsEmpty (sources)) {
   1298  1.103  christos 		    gn = (GNode *)Lst_DeQueue(sources);
   1299  1.120       dsl 		    ParseDoSrc(tOp, gn->name);
   1300    1.1       cgd 		}
   1301   1.97  christos 		Lst_Destroy(sources, NOFREE);
   1302    1.1       cgd 		cp = line;
   1303    1.1       cgd 	    } else {
   1304    1.1       cgd 		if (*cp) {
   1305    1.1       cgd 		    *cp = '\0';
   1306    1.1       cgd 		    cp += 1;
   1307    1.1       cgd 		}
   1308    1.1       cgd 
   1309  1.120       dsl 		ParseDoSrc(tOp, line);
   1310    1.1       cgd 	    }
   1311   1.40  christos 	    while (*cp && isspace ((unsigned char)*cp)) {
   1312    1.1       cgd 		cp++;
   1313    1.1       cgd 	    }
   1314    1.1       cgd 	    line = cp;
   1315    1.1       cgd 	}
   1316    1.1       cgd     }
   1317   1.27  christos 
   1318    1.1       cgd     if (mainNode == NILGNODE) {
   1319    1.1       cgd 	/*
   1320    1.1       cgd 	 * If we have yet to decide on a main target to make, in the
   1321    1.1       cgd 	 * absence of any user input, we want the first target on
   1322    1.1       cgd 	 * the first dependency line that is actually a real target
   1323    1.1       cgd 	 * (i.e. isn't a .USE or .EXEC rule) to be made.
   1324    1.1       cgd 	 */
   1325  1.119       dsl 	Lst_ForEach(targets, ParseFindMain, NULL);
   1326    1.1       cgd     }
   1327    1.1       cgd 
   1328  1.112  christos out:
   1329  1.112  christos     if (curTargs)
   1330  1.112  christos 	    Lst_Destroy(curTargs, NOFREE);
   1331    1.1       cgd }
   1332    1.1       cgd 
   1333    1.1       cgd /*-
   1334    1.1       cgd  *---------------------------------------------------------------------
   1335    1.1       cgd  * Parse_IsVar  --
   1336    1.1       cgd  *	Return TRUE if the passed line is a variable assignment. A variable
   1337    1.1       cgd  *	assignment consists of a single word followed by optional whitespace
   1338    1.1       cgd  *	followed by either a += or an = operator.
   1339    1.1       cgd  *	This function is used both by the Parse_File function and main when
   1340    1.1       cgd  *	parsing the command-line arguments.
   1341    1.1       cgd  *
   1342   1.84       wiz  * Input:
   1343   1.84       wiz  *	line		the line to check
   1344   1.84       wiz  *
   1345    1.1       cgd  * Results:
   1346    1.1       cgd  *	TRUE if it is. FALSE if it ain't
   1347    1.1       cgd  *
   1348    1.1       cgd  * Side Effects:
   1349    1.1       cgd  *	none
   1350    1.1       cgd  *---------------------------------------------------------------------
   1351    1.1       cgd  */
   1352    1.1       cgd Boolean
   1353   1.84       wiz Parse_IsVar(char *line)
   1354    1.1       cgd {
   1355   1.84       wiz     Boolean wasSpace = FALSE;	/* set TRUE if found a space */
   1356   1.84       wiz     Boolean haveName = FALSE;	/* Set TRUE if have a variable name */
   1357   1.16  christos     int level = 0;
   1358   1.16  christos #define ISEQOPERATOR(c) \
   1359   1.16  christos 	(((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!'))
   1360    1.1       cgd 
   1361    1.1       cgd     /*
   1362    1.1       cgd      * Skip to variable name
   1363    1.1       cgd      */
   1364   1.27  christos     for (;(*line == ' ') || (*line == '\t'); line++)
   1365   1.16  christos 	continue;
   1366    1.1       cgd 
   1367   1.16  christos     for (; *line != '=' || level != 0; line++)
   1368   1.16  christos 	switch (*line) {
   1369   1.16  christos 	case '\0':
   1370    1.1       cgd 	    /*
   1371    1.1       cgd 	     * end-of-line -- can't be a variable assignment.
   1372    1.1       cgd 	     */
   1373   1.16  christos 	    return FALSE;
   1374   1.16  christos 
   1375   1.16  christos 	case ' ':
   1376   1.16  christos 	case '\t':
   1377    1.1       cgd 	    /*
   1378    1.1       cgd 	     * there can be as much white space as desired so long as there is
   1379   1.27  christos 	     * only one word before the operator
   1380    1.1       cgd 	     */
   1381    1.1       cgd 	    wasSpace = TRUE;
   1382   1.16  christos 	    break;
   1383   1.16  christos 
   1384   1.77  christos 	case LPAREN:
   1385   1.16  christos 	case '{':
   1386   1.16  christos 	    level++;
   1387   1.16  christos 	    break;
   1388   1.16  christos 
   1389   1.16  christos 	case '}':
   1390   1.77  christos 	case RPAREN:
   1391   1.16  christos 	    level--;
   1392   1.16  christos 	    break;
   1393   1.27  christos 
   1394   1.16  christos 	default:
   1395   1.16  christos 	    if (wasSpace && haveName) {
   1396   1.16  christos 		    if (ISEQOPERATOR(*line)) {
   1397   1.16  christos 			/*
   1398   1.23  christos 			 * We must have a finished word
   1399   1.23  christos 			 */
   1400   1.23  christos 			if (level != 0)
   1401   1.23  christos 			    return FALSE;
   1402   1.23  christos 
   1403   1.23  christos 			/*
   1404   1.16  christos 			 * When an = operator [+?!:] is found, the next
   1405   1.23  christos 			 * character must be an = or it ain't a valid
   1406   1.16  christos 			 * assignment.
   1407   1.16  christos 			 */
   1408   1.23  christos 			if (line[1] == '=')
   1409   1.16  christos 			    return haveName;
   1410   1.23  christos #ifdef SUNSHCMD
   1411   1.16  christos 			/*
   1412   1.23  christos 			 * This is a shell command
   1413   1.16  christos 			 */
   1414   1.23  christos 			if (strncmp(line, ":sh", 3) == 0)
   1415   1.23  christos 			    return haveName;
   1416   1.23  christos #endif
   1417   1.16  christos 		    }
   1418   1.23  christos 		    /*
   1419   1.23  christos 		     * This is the start of another word, so not assignment.
   1420   1.23  christos 		     */
   1421   1.23  christos 		    return FALSE;
   1422   1.16  christos 	    }
   1423   1.16  christos 	    else {
   1424   1.27  christos 		haveName = TRUE;
   1425   1.16  christos 		wasSpace = FALSE;
   1426    1.1       cgd 	    }
   1427   1.16  christos 	    break;
   1428    1.1       cgd 	}
   1429    1.1       cgd 
   1430   1.16  christos     return haveName;
   1431    1.1       cgd }
   1432    1.1       cgd 
   1433    1.1       cgd /*-
   1434    1.1       cgd  *---------------------------------------------------------------------
   1435    1.1       cgd  * Parse_DoVar  --
   1436    1.1       cgd  *	Take the variable assignment in the passed line and do it in the
   1437    1.1       cgd  *	global context.
   1438    1.1       cgd  *
   1439    1.1       cgd  *	Note: There is a lexical ambiguity with assignment modifier characters
   1440    1.1       cgd  *	in variable names. This routine interprets the character before the =
   1441    1.1       cgd  *	as a modifier. Therefore, an assignment like
   1442    1.1       cgd  *	    C++=/usr/bin/CC
   1443    1.1       cgd  *	is interpreted as "C+ +=" instead of "C++ =".
   1444    1.1       cgd  *
   1445   1.84       wiz  * Input:
   1446   1.84       wiz  *	line		a line guaranteed to be a variable assignment.
   1447   1.84       wiz  *			This reduces error checks
   1448   1.84       wiz  *	ctxt		Context in which to do the assignment
   1449   1.84       wiz  *
   1450    1.1       cgd  * Results:
   1451    1.1       cgd  *	none
   1452    1.1       cgd  *
   1453    1.1       cgd  * Side Effects:
   1454    1.1       cgd  *	the variable structure of the given variable name is altered in the
   1455    1.1       cgd  *	global context.
   1456    1.1       cgd  *---------------------------------------------------------------------
   1457    1.1       cgd  */
   1458    1.1       cgd void
   1459   1.84       wiz Parse_DoVar(char *line, GNode *ctxt)
   1460    1.1       cgd {
   1461    1.7       cgd     char	   *cp;	/* pointer into line */
   1462    1.1       cgd     enum {
   1463    1.1       cgd 	VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL
   1464    1.1       cgd     }	    	    type;   	/* Type of assignment */
   1465   1.27  christos     char            *opc;	/* ptr to operator character to
   1466    1.1       cgd 				 * null-terminate the variable name */
   1467   1.86       sjg     Boolean	   freeCp = FALSE; /* TRUE if cp needs to be freed,
   1468   1.86       sjg 				    * i.e. if any variable expansion was
   1469   1.86       sjg 				    * performed */
   1470   1.27  christos     /*
   1471    1.7       cgd      * Avoid clobbered variable warnings by forcing the compiler
   1472    1.7       cgd      * to ``unregister'' variables
   1473    1.7       cgd      */
   1474    1.7       cgd #if __GNUC__
   1475    1.7       cgd     (void) &cp;
   1476    1.7       cgd     (void) &line;
   1477    1.7       cgd #endif
   1478    1.1       cgd 
   1479    1.1       cgd     /*
   1480    1.1       cgd      * Skip to variable name
   1481    1.1       cgd      */
   1482    1.1       cgd     while ((*line == ' ') || (*line == '\t')) {
   1483    1.1       cgd 	line++;
   1484    1.1       cgd     }
   1485    1.1       cgd 
   1486    1.1       cgd     /*
   1487    1.1       cgd      * Skip to operator character, nulling out whitespace as we go
   1488    1.1       cgd      */
   1489    1.1       cgd     for (cp = line + 1; *cp != '='; cp++) {
   1490   1.40  christos 	if (isspace ((unsigned char)*cp)) {
   1491    1.1       cgd 	    *cp = '\0';
   1492    1.1       cgd 	}
   1493    1.1       cgd     }
   1494    1.1       cgd     opc = cp-1;		/* operator is the previous character */
   1495    1.1       cgd     *cp++ = '\0';	/* nuke the = */
   1496    1.1       cgd 
   1497    1.1       cgd     /*
   1498    1.1       cgd      * Check operator type
   1499    1.1       cgd      */
   1500    1.1       cgd     switch (*opc) {
   1501    1.1       cgd 	case '+':
   1502    1.1       cgd 	    type = VAR_APPEND;
   1503    1.1       cgd 	    *opc = '\0';
   1504    1.1       cgd 	    break;
   1505    1.1       cgd 
   1506    1.1       cgd 	case '?':
   1507    1.1       cgd 	    /*
   1508    1.1       cgd 	     * If the variable already has a value, we don't do anything.
   1509    1.1       cgd 	     */
   1510    1.1       cgd 	    *opc = '\0';
   1511    1.1       cgd 	    if (Var_Exists(line, ctxt)) {
   1512    1.1       cgd 		return;
   1513    1.1       cgd 	    } else {
   1514    1.1       cgd 		type = VAR_NORMAL;
   1515    1.1       cgd 	    }
   1516    1.1       cgd 	    break;
   1517    1.1       cgd 
   1518    1.1       cgd 	case ':':
   1519    1.1       cgd 	    type = VAR_SUBST;
   1520    1.1       cgd 	    *opc = '\0';
   1521    1.1       cgd 	    break;
   1522    1.1       cgd 
   1523    1.1       cgd 	case '!':
   1524    1.1       cgd 	    type = VAR_SHELL;
   1525    1.1       cgd 	    *opc = '\0';
   1526    1.1       cgd 	    break;
   1527    1.1       cgd 
   1528    1.1       cgd 	default:
   1529   1.23  christos #ifdef SUNSHCMD
   1530   1.39  christos 	    while (opc > line && *opc != ':')
   1531   1.39  christos 		opc--;
   1532   1.23  christos 
   1533   1.23  christos 	    if (strncmp(opc, ":sh", 3) == 0) {
   1534   1.23  christos 		type = VAR_SHELL;
   1535   1.23  christos 		*opc = '\0';
   1536   1.23  christos 		break;
   1537   1.23  christos 	    }
   1538   1.23  christos #endif
   1539    1.1       cgd 	    type = VAR_NORMAL;
   1540    1.1       cgd 	    break;
   1541    1.1       cgd     }
   1542    1.1       cgd 
   1543   1.40  christos     while (isspace ((unsigned char)*cp)) {
   1544    1.1       cgd 	cp++;
   1545    1.1       cgd     }
   1546    1.1       cgd 
   1547    1.1       cgd     if (type == VAR_APPEND) {
   1548   1.97  christos 	Var_Append(line, cp, ctxt);
   1549    1.1       cgd     } else if (type == VAR_SUBST) {
   1550    1.1       cgd 	/*
   1551    1.1       cgd 	 * Allow variables in the old value to be undefined, but leave their
   1552    1.1       cgd 	 * invocation alone -- this is done by forcing oldVars to be false.
   1553    1.1       cgd 	 * XXX: This can cause recursive variables, but that's not hard to do,
   1554    1.1       cgd 	 * and this allows someone to do something like
   1555    1.1       cgd 	 *
   1556    1.1       cgd 	 *  CFLAGS = $(.INCLUDES)
   1557    1.1       cgd 	 *  CFLAGS := -I.. $(CFLAGS)
   1558    1.1       cgd 	 *
   1559    1.1       cgd 	 * And not get an error.
   1560    1.1       cgd 	 */
   1561    1.1       cgd 	Boolean	  oldOldVars = oldVars;
   1562    1.1       cgd 
   1563    1.1       cgd 	oldVars = FALSE;
   1564   1.42  christos 
   1565   1.42  christos 	/*
   1566   1.42  christos 	 * make sure that we set the variable the first time to nothing
   1567   1.42  christos 	 * so that it gets substituted!
   1568   1.42  christos 	 */
   1569   1.42  christos 	if (!Var_Exists(line, ctxt))
   1570   1.70       sjg 	    Var_Set(line, "", ctxt, 0);
   1571   1.42  christos 
   1572    1.5       cgd 	cp = Var_Subst(NULL, cp, ctxt, FALSE);
   1573    1.1       cgd 	oldVars = oldOldVars;
   1574   1.86       sjg 	freeCp = TRUE;
   1575    1.1       cgd 
   1576   1.70       sjg 	Var_Set(line, cp, ctxt, 0);
   1577    1.1       cgd     } else if (type == VAR_SHELL) {
   1578   1.93  christos 	char *res;
   1579  1.115  christos 	const char *error;
   1580    1.5       cgd 
   1581   1.23  christos 	if (strchr(cp, '$') != NULL) {
   1582    1.1       cgd 	    /*
   1583    1.1       cgd 	     * There's a dollar sign in the command, so perform variable
   1584    1.1       cgd 	     * expansion on the whole thing. The resulting string will need
   1585    1.1       cgd 	     * freeing when we're done, so set freeCmd to TRUE.
   1586    1.1       cgd 	     */
   1587   1.23  christos 	    cp = Var_Subst(NULL, cp, VAR_CMD, TRUE);
   1588   1.86       sjg 	    freeCp = TRUE;
   1589    1.1       cgd 	}
   1590    1.1       cgd 
   1591  1.115  christos 	res = Cmd_Exec(cp, &error);
   1592   1.70       sjg 	Var_Set(line, res, ctxt, 0);
   1593   1.23  christos 	free(res);
   1594    1.1       cgd 
   1595  1.115  christos 	if (error)
   1596  1.115  christos 	    Parse_Error(PARSE_WARNING, error, cp);
   1597    1.1       cgd     } else {
   1598    1.1       cgd 	/*
   1599    1.1       cgd 	 * Normal assignment -- just do it.
   1600    1.1       cgd 	 */
   1601   1.70       sjg 	Var_Set(line, cp, ctxt, 0);
   1602    1.1       cgd     }
   1603   1.69       sjg     if (strcmp(line, MAKEOVERRIDES) == 0)
   1604   1.74        tv 	Main_ExportMAKEFLAGS(FALSE);	/* re-export MAKEFLAGS */
   1605   1.85       sjg     else if (strcmp(line, ".CURDIR") == 0) {
   1606   1.85       sjg 	/*
   1607   1.85       sjg 	 * Somone is being (too?) clever...
   1608   1.85       sjg 	 * Let's pretend they know what they are doing and
   1609   1.85       sjg 	 * re-initialize the 'cur' Path.
   1610   1.85       sjg 	 */
   1611   1.85       sjg 	Dir_InitCur(cp);
   1612   1.85       sjg 	Dir_SetPATH();
   1613   1.85       sjg     }
   1614   1.86       sjg     if (freeCp)
   1615   1.86       sjg 	free(cp);
   1616    1.1       cgd }
   1617   1.23  christos 
   1618    1.1       cgd 
   1619    1.1       cgd /*-
   1620    1.1       cgd  * ParseAddCmd  --
   1621    1.1       cgd  *	Lst_ForEach function to add a command line to all targets
   1622    1.1       cgd  *
   1623   1.84       wiz  * Input:
   1624   1.84       wiz  *	gnp		the node to which the command is to be added
   1625   1.84       wiz  *	cmd		the command to add
   1626   1.84       wiz  *
   1627    1.1       cgd  * Results:
   1628    1.1       cgd  *	Always 0
   1629    1.1       cgd  *
   1630    1.1       cgd  * Side Effects:
   1631    1.1       cgd  *	A new element is added to the commands list of the node.
   1632    1.1       cgd  */
   1633    1.5       cgd static int
   1634   1.84       wiz ParseAddCmd(ClientData gnp, ClientData cmd)
   1635    1.9       jtc {
   1636  1.105  christos     GNode *gn = (GNode *)gnp;
   1637  1.120       dsl 
   1638  1.120       dsl     /* Add to last (ie current) cohort for :: targets */
   1639   1.47   mycroft     if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts))
   1640  1.103  christos 	gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts));
   1641  1.120       dsl 
   1642  1.120       dsl     /* if target already supplied, ignore commands */
   1643   1.59  christos     if (!(gn->type & OP_HAS_COMMANDS)) {
   1644   1.59  christos 	(void)Lst_AtEnd(gn->commands, cmd);
   1645   1.59  christos 	ParseMark(gn);
   1646   1.59  christos     } else {
   1647   1.60  christos #ifdef notyet
   1648   1.60  christos 	/* XXX: We cannot do this until we fix the tree */
   1649    1.9       jtc 	(void)Lst_AtEnd(gn->commands, cmd);
   1650   1.97  christos 	Parse_Error(PARSE_WARNING,
   1651   1.61  christos 		     "overriding commands for target \"%s\"; "
   1652   1.61  christos 		     "previous commands defined at %s: %d ignored",
   1653   1.59  christos 		     gn->name, gn->fname, gn->lineno);
   1654   1.60  christos #else
   1655   1.97  christos 	Parse_Error(PARSE_WARNING,
   1656   1.62   mycroft 		     "duplicate script for target \"%s\" ignored",
   1657   1.62   mycroft 		     gn->name);
   1658   1.97  christos 	ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING,
   1659   1.62   mycroft 			    "using previous script for \"%s\" defined here",
   1660   1.62   mycroft 			    gn->name);
   1661   1.60  christos #endif
   1662   1.59  christos     }
   1663    1.9       jtc     return(0);
   1664    1.1       cgd }
   1665    1.1       cgd 
   1666    1.1       cgd /*-
   1667    1.1       cgd  *-----------------------------------------------------------------------
   1668    1.1       cgd  * ParseHasCommands --
   1669    1.1       cgd  *	Callback procedure for Parse_File when destroying the list of
   1670    1.1       cgd  *	targets on the last dependency line. Marks a target as already
   1671    1.1       cgd  *	having commands if it does, to keep from having shell commands
   1672    1.1       cgd  *	on multiple dependency lines.
   1673    1.1       cgd  *
   1674   1.84       wiz  * Input:
   1675   1.84       wiz  *	gnp		Node to examine
   1676   1.84       wiz  *
   1677    1.1       cgd  * Results:
   1678    1.9       jtc  *	None
   1679    1.1       cgd  *
   1680    1.1       cgd  * Side Effects:
   1681    1.1       cgd  *	OP_HAS_COMMANDS may be set for the target.
   1682    1.1       cgd  *
   1683    1.1       cgd  *-----------------------------------------------------------------------
   1684    1.1       cgd  */
   1685    1.9       jtc static void
   1686   1.84       wiz ParseHasCommands(ClientData gnp)
   1687    1.1       cgd {
   1688  1.105  christos     GNode *gn = (GNode *)gnp;
   1689    1.1       cgd     if (!Lst_IsEmpty(gn->commands)) {
   1690    1.1       cgd 	gn->type |= OP_HAS_COMMANDS;
   1691    1.1       cgd     }
   1692    1.1       cgd }
   1693    1.1       cgd 
   1694    1.1       cgd /*-
   1695    1.1       cgd  *-----------------------------------------------------------------------
   1696    1.1       cgd  * Parse_AddIncludeDir --
   1697    1.1       cgd  *	Add a directory to the path searched for included makefiles
   1698    1.1       cgd  *	bracketed by double-quotes. Used by functions in main.c
   1699    1.1       cgd  *
   1700   1.84       wiz  * Input:
   1701   1.84       wiz  *	dir		The name of the directory to add
   1702   1.84       wiz  *
   1703    1.1       cgd  * Results:
   1704    1.1       cgd  *	None.
   1705    1.1       cgd  *
   1706    1.1       cgd  * Side Effects:
   1707    1.1       cgd  *	The directory is appended to the list.
   1708    1.1       cgd  *
   1709    1.1       cgd  *-----------------------------------------------------------------------
   1710    1.1       cgd  */
   1711    1.1       cgd void
   1712   1.84       wiz Parse_AddIncludeDir(char *dir)
   1713    1.1       cgd {
   1714  1.103  christos     (void)Dir_AddDir(parseIncPath, dir);
   1715    1.1       cgd }
   1716    1.1       cgd 
   1717    1.1       cgd /*-
   1718    1.1       cgd  *---------------------------------------------------------------------
   1719    1.1       cgd  * ParseDoInclude  --
   1720    1.1       cgd  *	Push to another file.
   1721   1.27  christos  *
   1722   1.38  christos  *	The input is the line minus the `.'. A file spec is a string
   1723    1.1       cgd  *	enclosed in <> or "". The former is looked for only in sysIncPath.
   1724    1.1       cgd  *	The latter in . and the directories specified by -I command line
   1725    1.1       cgd  *	options
   1726    1.1       cgd  *
   1727    1.1       cgd  * Results:
   1728    1.1       cgd  *	None
   1729    1.1       cgd  *
   1730    1.1       cgd  * Side Effects:
   1731    1.1       cgd  *	A structure is added to the includes Lst and readProc, lineno,
   1732    1.1       cgd  *	fname and curFILE are altered for the new file
   1733    1.1       cgd  *---------------------------------------------------------------------
   1734    1.1       cgd  */
   1735    1.1       cgd static void
   1736   1.84       wiz ParseDoInclude(char *line)
   1737    1.1       cgd {
   1738    1.1       cgd     char          *fullname;	/* full pathname of file */
   1739    1.1       cgd     IFile         *oldFile;	/* state associated with current file */
   1740    1.1       cgd     char          endc;	    	/* the character which ends the file spec */
   1741    1.1       cgd     char          *cp;		/* current position in file spec */
   1742    1.1       cgd     Boolean 	  isSystem; 	/* TRUE if makefile is a system makefile */
   1743   1.38  christos     int		  silent = (*line != 'i') ? 1 : 0;
   1744   1.38  christos     char	  *file = &line[7 + silent];
   1745    1.1       cgd 
   1746    1.1       cgd     /*
   1747    1.1       cgd      * Skip to delimiter character so we know where to look
   1748    1.1       cgd      */
   1749    1.1       cgd     while ((*file == ' ') || (*file == '\t')) {
   1750    1.1       cgd 	file++;
   1751    1.1       cgd     }
   1752    1.1       cgd 
   1753    1.1       cgd     if ((*file != '"') && (*file != '<')) {
   1754   1.97  christos 	Parse_Error(PARSE_FATAL,
   1755    1.1       cgd 	    ".include filename must be delimited by '\"' or '<'");
   1756    1.1       cgd 	return;
   1757    1.1       cgd     }
   1758    1.1       cgd 
   1759    1.1       cgd     /*
   1760    1.1       cgd      * Set the search path on which to find the include file based on the
   1761    1.1       cgd      * characters which bracket its name. Angle-brackets imply it's
   1762    1.1       cgd      * a system Makefile while double-quotes imply it's a user makefile
   1763    1.1       cgd      */
   1764    1.1       cgd     if (*file == '<') {
   1765    1.1       cgd 	isSystem = TRUE;
   1766    1.1       cgd 	endc = '>';
   1767    1.1       cgd     } else {
   1768    1.1       cgd 	isSystem = FALSE;
   1769    1.1       cgd 	endc = '"';
   1770    1.1       cgd     }
   1771    1.1       cgd 
   1772    1.1       cgd     /*
   1773    1.1       cgd      * Skip to matching delimiter
   1774    1.1       cgd      */
   1775    1.1       cgd     for (cp = ++file; *cp && *cp != endc; cp++) {
   1776    1.1       cgd 	continue;
   1777    1.1       cgd     }
   1778    1.1       cgd 
   1779    1.1       cgd     if (*cp != endc) {
   1780   1.97  christos 	Parse_Error(PARSE_FATAL,
   1781    1.5       cgd 		     "Unclosed %cinclude filename. '%c' expected",
   1782    1.5       cgd 		     '.', endc);
   1783    1.1       cgd 	return;
   1784    1.1       cgd     }
   1785    1.1       cgd     *cp = '\0';
   1786    1.1       cgd 
   1787    1.1       cgd     /*
   1788    1.1       cgd      * Substitute for any variables in the file name before trying to
   1789    1.1       cgd      * find the thing.
   1790    1.1       cgd      */
   1791   1.97  christos     file = Var_Subst(NULL, file, VAR_CMD, FALSE);
   1792    1.1       cgd 
   1793    1.1       cgd     /*
   1794    1.1       cgd      * Now we know the file's name and its search path, we attempt to
   1795    1.1       cgd      * find the durn thing. A return of NULL indicates the file don't
   1796    1.1       cgd      * exist.
   1797    1.1       cgd      */
   1798  1.105  christos     fullname = NULL;
   1799   1.76   reinoud 
   1800    1.1       cgd     if (!isSystem) {
   1801    1.1       cgd 	/*
   1802    1.1       cgd 	 * Include files contained in double-quotes are first searched for
   1803    1.1       cgd 	 * relative to the including file's location. We don't want to
   1804    1.1       cgd 	 * cd there, of course, so we just tack on the old file's
   1805    1.1       cgd 	 * leading path components and call Dir_FindFile to see if
   1806    1.1       cgd 	 * we can locate the beast.
   1807    1.1       cgd 	 */
   1808   1.19   thorpej 	char	  *prefEnd, *Fname;
   1809    1.1       cgd 
   1810   1.19   thorpej 	/* Make a temporary copy of this, to be safe. */
   1811   1.82   reinoud 	Fname = estrdup(curFile.fname);
   1812   1.19   thorpej 
   1813  1.103  christos 	prefEnd = strrchr(Fname, '/');
   1814  1.105  christos 	if (prefEnd != NULL) {
   1815    1.1       cgd 	    char  	*newName;
   1816   1.27  christos 
   1817    1.1       cgd 	    *prefEnd = '\0';
   1818    1.9       jtc 	    if (file[0] == '/')
   1819   1.24  christos 		newName = estrdup(file);
   1820    1.9       jtc 	    else
   1821   1.97  christos 		newName = str_concat(Fname, file, STR_ADDSLASH);
   1822   1.97  christos 	    fullname = Dir_FindFile(newName, parseIncPath);
   1823  1.105  christos 	    if (fullname == NULL) {
   1824    1.1       cgd 		fullname = Dir_FindFile(newName, dirSearchPath);
   1825    1.1       cgd 	    }
   1826  1.103  christos 	    free(newName);
   1827    1.1       cgd 	    *prefEnd = '/';
   1828    1.1       cgd 	} else {
   1829  1.105  christos 	    fullname = NULL;
   1830    1.1       cgd 	}
   1831  1.103  christos 	free(Fname);
   1832  1.105  christos         if (fullname == NULL) {
   1833   1.76   reinoud 	    /*
   1834   1.76   reinoud     	     * Makefile wasn't found in same directory as included makefile.
   1835   1.76   reinoud 	     * Search for it first on the -I search path,
   1836   1.76   reinoud 	     * then on the .PATH search path, if not found in a -I directory.
   1837   1.76   reinoud 	     * XXX: Suffix specific?
   1838   1.76   reinoud 	     */
   1839   1.97  christos 	    fullname = Dir_FindFile(file, parseIncPath);
   1840  1.105  christos 	    if (fullname == NULL) {
   1841   1.76   reinoud 	        fullname = Dir_FindFile(file, dirSearchPath);
   1842   1.76   reinoud 	    }
   1843   1.76   reinoud         }
   1844    1.1       cgd     }
   1845    1.1       cgd 
   1846   1.76   reinoud     /* Looking for a system file or file still not found */
   1847  1.105  christos     if (fullname == NULL) {
   1848    1.1       cgd 	/*
   1849   1.76   reinoud 	 * Look for it on the system path
   1850    1.1       cgd 	 */
   1851   1.74        tv 	fullname = Dir_FindFile(file, Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath);
   1852    1.1       cgd     }
   1853    1.1       cgd 
   1854  1.105  christos     if (fullname == NULL) {
   1855    1.1       cgd 	*cp = endc;
   1856   1.38  christos 	if (!silent)
   1857   1.97  christos 	    Parse_Error(PARSE_FATAL, "Could not find %s", file);
   1858    1.1       cgd 	return;
   1859    1.1       cgd     }
   1860    1.1       cgd 
   1861    1.9       jtc     free(file);
   1862    1.9       jtc 
   1863    1.1       cgd     /*
   1864    1.1       cgd      * Once we find the absolute path to the file, we get to save all the
   1865    1.1       cgd      * state from the current file before we can start reading this
   1866    1.1       cgd      * include file. The state is stored in an IFile structure which
   1867    1.1       cgd      * is placed on a list with other IFile structures. The list makes
   1868    1.1       cgd      * a very nice stack to track how we got here...
   1869    1.1       cgd      */
   1870   1.97  christos     oldFile = emalloc(sizeof(IFile));
   1871    1.1       cgd 
   1872  1.103  christos     memcpy(oldFile, &curFile, sizeof(IFile));
   1873    1.1       cgd 
   1874  1.119       dsl     (void)Lst_AtFront(includes, oldFile);
   1875    1.1       cgd 
   1876    1.1       cgd     /*
   1877    1.1       cgd      * Once the previous state has been saved, we can get down to reading
   1878    1.1       cgd      * the new file. We set up the name of the file to be the absolute
   1879    1.1       cgd      * name of the include file so error messages refer to the right
   1880    1.1       cgd      * place. Naturally enough, we start reading at line number 0.
   1881    1.1       cgd      */
   1882   1.82   reinoud     curFile.fname = fullname;
   1883   1.82   reinoud     curFile.lineno = 0;
   1884   1.82   reinoud 
   1885   1.82   reinoud     ParseSetParseFile(curFile.fname);
   1886    1.1       cgd 
   1887  1.103  christos     curFile.F = fopen(fullname, "r");
   1888   1.82   reinoud     curFile.P = NULL;
   1889   1.44     aidan 
   1890   1.82   reinoud     if (curFile.F == (FILE * ) NULL) {
   1891   1.38  christos 	if (!silent)
   1892   1.97  christos 	    Parse_Error(PARSE_FATAL, "Cannot open %s", fullname);
   1893    1.1       cgd 	/*
   1894    1.1       cgd 	 * Pop to previous file
   1895    1.1       cgd 	 */
   1896  1.103  christos 	(void)ParseEOF(0);
   1897    1.1       cgd     }
   1898    1.1       cgd }
   1899    1.1       cgd 
   1900    1.5       cgd 
   1901    1.5       cgd /*-
   1902    1.5       cgd  *---------------------------------------------------------------------
   1903   1.44     aidan  * ParseSetParseFile  --
   1904   1.44     aidan  *	Set the .PARSEDIR and .PARSEFILE variables to the dirname and
   1905   1.44     aidan  *	basename of the given filename
   1906   1.44     aidan  *
   1907   1.44     aidan  * Results:
   1908   1.44     aidan  *	None
   1909   1.44     aidan  *
   1910   1.44     aidan  * Side Effects:
   1911   1.44     aidan  *	The .PARSEDIR and .PARSEFILE variables are overwritten by the
   1912   1.44     aidan  *	dirname and basename of the given filename.
   1913   1.44     aidan  *---------------------------------------------------------------------
   1914   1.44     aidan  */
   1915   1.44     aidan static void
   1916   1.84       wiz ParseSetParseFile(char *filename)
   1917   1.44     aidan {
   1918   1.44     aidan     char *slash;
   1919   1.44     aidan 
   1920   1.78   reinoud     slash = strrchr(filename, '/');
   1921   1.44     aidan     if (slash == 0) {
   1922   1.70       sjg 	Var_Set(".PARSEDIR", ".", VAR_GLOBAL, 0);
   1923   1.78   reinoud 	Var_Set(".PARSEFILE", filename, VAR_GLOBAL, 0);
   1924   1.44     aidan     } else {
   1925   1.44     aidan 	*slash = '\0';
   1926   1.78   reinoud 	Var_Set(".PARSEDIR", filename, VAR_GLOBAL, 0);
   1927   1.70       sjg 	Var_Set(".PARSEFILE", slash+1, VAR_GLOBAL, 0);
   1928   1.44     aidan 	*slash = '/';
   1929   1.44     aidan     }
   1930   1.44     aidan }
   1931   1.44     aidan 
   1932   1.44     aidan 
   1933   1.44     aidan /*-
   1934   1.44     aidan  *---------------------------------------------------------------------
   1935    1.5       cgd  * Parse_FromString  --
   1936    1.5       cgd  *	Start Parsing from the given string
   1937   1.27  christos  *
   1938    1.5       cgd  * Results:
   1939    1.5       cgd  *	None
   1940    1.5       cgd  *
   1941    1.5       cgd  * Side Effects:
   1942    1.5       cgd  *	A structure is added to the includes Lst and readProc, lineno,
   1943    1.5       cgd  *	fname and curFILE are altered for the new file
   1944    1.5       cgd  *---------------------------------------------------------------------
   1945    1.5       cgd  */
   1946    1.5       cgd void
   1947   1.95     enami Parse_FromString(char *str, int lineno)
   1948    1.5       cgd {
   1949    1.5       cgd     IFile         *oldFile;	/* state associated with this file */
   1950    1.5       cgd 
   1951    1.5       cgd     if (DEBUG(FOR))
   1952  1.116       dsl 	(void)fprintf(debug_file, "%s\n---- at line %d\n", str, lineno);
   1953    1.5       cgd 
   1954   1.97  christos     oldFile = emalloc(sizeof(IFile));
   1955  1.103  christos     memcpy(oldFile, &curFile, sizeof(IFile));
   1956   1.27  christos 
   1957  1.119       dsl     (void)Lst_AtFront(includes, oldFile);
   1958    1.5       cgd 
   1959   1.82   reinoud     curFile.F = NULL;
   1960   1.97  christos     curFile.P = emalloc(sizeof(PTR));
   1961   1.82   reinoud     curFile.P->str = curFile.P->ptr = str;
   1962   1.95     enami     curFile.lineno = lineno;
   1963   1.82   reinoud     curFile.fname = estrdup(curFile.fname);
   1964    1.5       cgd }
   1965    1.5       cgd 
   1966    1.5       cgd 
   1967    1.5       cgd #ifdef SYSVINCLUDE
   1968    1.5       cgd /*-
   1969    1.5       cgd  *---------------------------------------------------------------------
   1970    1.5       cgd  * ParseTraditionalInclude  --
   1971    1.5       cgd  *	Push to another file.
   1972   1.27  christos  *
   1973   1.38  christos  *	The input is the current line. The file name(s) are
   1974   1.38  christos  *	following the "include".
   1975    1.5       cgd  *
   1976    1.5       cgd  * Results:
   1977    1.5       cgd  *	None
   1978    1.5       cgd  *
   1979    1.5       cgd  * Side Effects:
   1980    1.5       cgd  *	A structure is added to the includes Lst and readProc, lineno,
   1981    1.5       cgd  *	fname and curFILE are altered for the new file
   1982    1.5       cgd  *---------------------------------------------------------------------
   1983    1.5       cgd  */
   1984    1.5       cgd static void
   1985   1.84       wiz ParseTraditionalInclude(char *line)
   1986    1.5       cgd {
   1987    1.5       cgd     char          *fullname;	/* full pathname of file */
   1988    1.5       cgd     IFile         *oldFile;	/* state associated with current file */
   1989    1.5       cgd     char          *cp;		/* current position in file spec */
   1990    1.5       cgd     char	  *prefEnd;
   1991   1.38  christos     int		   done = 0;
   1992   1.38  christos     int		   silent = (line[0] != 'i') ? 1 : 0;
   1993   1.38  christos     char	  *file = &line[silent + 7];
   1994   1.82   reinoud     char	  *cfname;
   1995   1.82   reinoud     size_t	   clineno;
   1996   1.38  christos 
   1997   1.82   reinoud     cfname  = curFile.fname;
   1998   1.82   reinoud     clineno = curFile.lineno;
   1999    1.5       cgd 
   2000  1.111  ginsbach     if (DEBUG(PARSE)) {
   2001  1.116       dsl 	    fprintf(debug_file, "ParseTraditionalInclude: %s\n", file);
   2002  1.111  ginsbach     }
   2003  1.111  ginsbach 
   2004    1.5       cgd     /*
   2005    1.5       cgd      * Skip over whitespace
   2006    1.5       cgd      */
   2007   1.38  christos     while (isspace((unsigned char)*file))
   2008    1.5       cgd 	file++;
   2009    1.5       cgd 
   2010  1.111  ginsbach     /*
   2011  1.111  ginsbach      * Substitute for any variables in the file name before trying to
   2012  1.111  ginsbach      * find the thing.
   2013  1.111  ginsbach      */
   2014  1.111  ginsbach     file = Var_Subst(NULL, file, VAR_CMD, FALSE);
   2015  1.111  ginsbach 
   2016    1.5       cgd     if (*file == '\0') {
   2017   1.97  christos 	Parse_Error(PARSE_FATAL,
   2018    1.5       cgd 		     "Filename missing from \"include\"");
   2019    1.5       cgd 	return;
   2020    1.5       cgd     }
   2021    1.5       cgd 
   2022   1.38  christos     for (; !done; file = cp + 1) {
   2023   1.38  christos 	/*
   2024   1.38  christos 	 * Skip to end of line or next whitespace
   2025   1.38  christos 	 */
   2026   1.38  christos 	for (cp = file; *cp && !isspace((unsigned char) *cp); cp++)
   2027   1.38  christos 	    continue;
   2028   1.38  christos 
   2029   1.38  christos 	if (*cp)
   2030   1.38  christos 	    *cp = '\0';
   2031   1.38  christos 	else
   2032   1.38  christos 	    done = 1;
   2033   1.38  christos 
   2034   1.38  christos 	/*
   2035   1.38  christos 	 * Now we know the file's name, we attempt to find the durn thing.
   2036   1.38  christos 	 * A return of NULL indicates the file don't exist.
   2037   1.38  christos 	 *
   2038   1.38  christos 	 * Include files are first searched for relative to the including
   2039   1.38  christos 	 * file's location. We don't want to cd there, of course, so we
   2040   1.38  christos 	 * just tack on the old file's leading path components and call
   2041   1.38  christos 	 * Dir_FindFile to see if we can locate the beast.
   2042   1.38  christos 	 * XXX - this *does* search in the current directory, right?
   2043   1.38  christos 	 */
   2044    1.5       cgd 
   2045   1.38  christos 	prefEnd = strrchr(cfname, '/');
   2046   1.38  christos 	if (prefEnd != NULL) {
   2047   1.38  christos 	    char  	*newName;
   2048    1.5       cgd 
   2049   1.38  christos 	    *prefEnd = '\0';
   2050   1.38  christos 	    newName = str_concat(cfname, file, STR_ADDSLASH);
   2051   1.38  christos 	    fullname = Dir_FindFile(newName, parseIncPath);
   2052   1.38  christos 	    if (fullname == NULL) {
   2053   1.38  christos 		fullname = Dir_FindFile(newName, dirSearchPath);
   2054   1.38  christos 	    }
   2055  1.103  christos 	    free(newName);
   2056   1.38  christos 	    *prefEnd = '/';
   2057   1.38  christos 	} else {
   2058   1.38  christos 	    fullname = NULL;
   2059    1.5       cgd 	}
   2060    1.5       cgd 
   2061   1.38  christos 	if (fullname == NULL) {
   2062   1.38  christos 	    /*
   2063   1.38  christos 	     * System makefile or makefile wasn't found in same directory as
   2064   1.38  christos 	     * included makefile. Search for it first on the -I search path,
   2065   1.38  christos 	     * then on the .PATH search path, if not found in a
   2066   1.38  christos 	     * -I directory. XXX: Suffix specific?
   2067   1.38  christos 	     */
   2068   1.38  christos 	    fullname = Dir_FindFile(file, parseIncPath);
   2069   1.38  christos 	    if (fullname == NULL) {
   2070   1.38  christos 		fullname = Dir_FindFile(file, dirSearchPath);
   2071   1.38  christos 	    }
   2072    1.5       cgd 	}
   2073    1.5       cgd 
   2074   1.38  christos 	if (fullname == NULL) {
   2075   1.38  christos 	    /*
   2076   1.38  christos 	     * Still haven't found the makefile. Look for it on the system
   2077   1.38  christos 	     * path as a last resort.
   2078   1.38  christos 	     */
   2079   1.74        tv 	    fullname = Dir_FindFile(file,
   2080   1.74        tv 			Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath);
   2081   1.38  christos 	}
   2082    1.5       cgd 
   2083   1.38  christos 	if (fullname == NULL) {
   2084   1.38  christos 	    if (!silent)
   2085   1.38  christos 		ParseErrorInternal(cfname, clineno, PARSE_FATAL,
   2086   1.38  christos 		    "Could not find %s", file);
   2087   1.38  christos 	    free(file);
   2088   1.38  christos 	    continue;
   2089   1.38  christos 	}
   2090    1.5       cgd 
   2091   1.38  christos 	free(file);
   2092    1.5       cgd 
   2093   1.38  christos 	/*
   2094   1.38  christos 	 * Once we find the absolute path to the file, we get to save all
   2095   1.38  christos 	 * the state from the current file before we can start reading this
   2096   1.38  christos 	 * include file. The state is stored in an IFile structure which
   2097   1.38  christos 	 * is placed on a list with other IFile structures. The list makes
   2098   1.38  christos 	 * a very nice stack to track how we got here...
   2099   1.38  christos 	 */
   2100   1.97  christos 	oldFile = emalloc(sizeof(IFile));
   2101  1.103  christos 	memcpy(oldFile, &curFile, sizeof(IFile));
   2102    1.5       cgd 
   2103  1.119       dsl 	(void)Lst_AtFront(includes, oldFile);
   2104    1.5       cgd 
   2105    1.5       cgd 	/*
   2106   1.38  christos 	 * Once the previous state has been saved, we can get down to
   2107   1.38  christos 	 * reading the new file. We set up the name of the file to be the
   2108   1.38  christos 	 * absolute name of the include file so error messages refer to the
   2109   1.38  christos 	 * right place. Naturally enough, we start reading at line number 0.
   2110    1.5       cgd 	 */
   2111   1.82   reinoud 	curFile.fname = fullname;
   2112   1.82   reinoud 	curFile.lineno = 0;
   2113   1.82   reinoud 
   2114   1.82   reinoud 	curFile.F = fopen(fullname, "r");
   2115   1.82   reinoud 	curFile.P = NULL;
   2116   1.38  christos 
   2117   1.82   reinoud 	if (curFile.F == NULL) {
   2118   1.38  christos 	    if (!silent)
   2119   1.38  christos 		ParseErrorInternal(cfname, clineno, PARSE_FATAL,
   2120   1.38  christos 		    "Cannot open %s", fullname);
   2121   1.38  christos 	    /*
   2122   1.38  christos 	     * Pop to previous file
   2123   1.38  christos 	     */
   2124  1.103  christos 	    (void)ParseEOF(1);
   2125   1.38  christos 	}
   2126    1.5       cgd     }
   2127    1.5       cgd }
   2128    1.5       cgd #endif
   2129    1.5       cgd 
   2130    1.1       cgd /*-
   2131    1.1       cgd  *---------------------------------------------------------------------
   2132    1.1       cgd  * ParseEOF  --
   2133    1.1       cgd  *	Called when EOF is reached in the current file. If we were reading
   2134    1.1       cgd  *	an include file, the includes stack is popped and things set up
   2135    1.1       cgd  *	to go back to reading the previous file at the previous location.
   2136    1.1       cgd  *
   2137    1.1       cgd  * Results:
   2138    1.1       cgd  *	CONTINUE if there's more to do. DONE if not.
   2139    1.1       cgd  *
   2140    1.1       cgd  * Side Effects:
   2141    1.1       cgd  *	The old curFILE, is closed. The includes list is shortened.
   2142    1.1       cgd  *	lineno, curFILE, and fname are changed if CONTINUE is returned.
   2143    1.1       cgd  *---------------------------------------------------------------------
   2144    1.1       cgd  */
   2145    1.1       cgd static int
   2146   1.84       wiz ParseEOF(int opened)
   2147    1.1       cgd {
   2148    1.1       cgd     IFile     *ifile;	/* the state on the top of the includes stack */
   2149    1.1       cgd 
   2150   1.97  christos     if (Lst_IsEmpty(includes)) {
   2151   1.44     aidan 	Var_Delete(".PARSEDIR", VAR_GLOBAL);
   2152   1.44     aidan 	Var_Delete(".PARSEFILE", VAR_GLOBAL);
   2153    1.1       cgd 	return (DONE);
   2154    1.1       cgd     }
   2155    1.1       cgd 
   2156  1.103  christos     ifile = (IFile *)Lst_DeQueue(includes);
   2157   1.82   reinoud 
   2158   1.82   reinoud     /* XXX dispose of curFile info */
   2159  1.104  christos     free( curFile.fname);
   2160   1.82   reinoud     if (opened && curFile.F)
   2161  1.103  christos 	(void)fclose(curFile.F);
   2162   1.82   reinoud     if (curFile.P) {
   2163  1.104  christos 	free(curFile.P->str);
   2164  1.104  christos 	free(curFile.P);
   2165    1.5       cgd     }
   2166   1.82   reinoud 
   2167  1.103  christos     memcpy(&curFile, ifile, sizeof(IFile));
   2168   1.82   reinoud 
   2169  1.104  christos     free(ifile);
   2170   1.44     aidan 
   2171   1.44     aidan     /* pop the PARSEDIR/PARSEFILE variables */
   2172   1.82   reinoud     ParseSetParseFile(curFile.fname);
   2173    1.1       cgd     return (CONTINUE);
   2174    1.1       cgd }
   2175    1.1       cgd 
   2176    1.1       cgd /*-
   2177    1.1       cgd  *---------------------------------------------------------------------
   2178    1.1       cgd  * ParseReadc  --
   2179   1.27  christos  *	Read a character from the current file
   2180    1.1       cgd  *
   2181    1.1       cgd  * Results:
   2182    1.1       cgd  *	The character that was read
   2183    1.1       cgd  *
   2184    1.1       cgd  * Side Effects:
   2185    1.1       cgd  *---------------------------------------------------------------------
   2186    1.1       cgd  */
   2187  1.107     perry static inline int
   2188   1.84       wiz ParseReadc(void)
   2189    1.5       cgd {
   2190   1.82   reinoud     if (curFile.F)
   2191   1.82   reinoud 	return fgetc(curFile.F);
   2192   1.27  christos 
   2193   1.82   reinoud     if (curFile.P && *curFile.P->ptr)
   2194   1.82   reinoud 	return *curFile.P->ptr++;
   2195    1.5       cgd     return EOF;
   2196    1.5       cgd }
   2197    1.5       cgd 
   2198    1.5       cgd 
   2199    1.5       cgd /*-
   2200    1.5       cgd  *---------------------------------------------------------------------
   2201    1.5       cgd  * ParseUnreadc  --
   2202   1.27  christos  *	Put back a character to the current file
   2203    1.5       cgd  *
   2204    1.5       cgd  * Results:
   2205    1.5       cgd  *	None.
   2206    1.5       cgd  *
   2207    1.5       cgd  * Side Effects:
   2208    1.5       cgd  *---------------------------------------------------------------------
   2209    1.5       cgd  */
   2210    1.5       cgd static void
   2211   1.84       wiz ParseUnreadc(int c)
   2212    1.5       cgd {
   2213   1.82   reinoud     if (curFile.F) {
   2214   1.82   reinoud 	ungetc(c, curFile.F);
   2215    1.5       cgd 	return;
   2216    1.5       cgd     }
   2217   1.82   reinoud     if (curFile.P) {
   2218   1.82   reinoud 	*--(curFile.P->ptr) = c;
   2219    1.5       cgd 	return;
   2220    1.5       cgd     }
   2221    1.5       cgd }
   2222    1.5       cgd 
   2223    1.5       cgd 
   2224    1.5       cgd /* ParseSkipLine():
   2225    1.5       cgd  *	Grab the next line
   2226   1.84       wiz  *
   2227   1.84       wiz  * Input:
   2228   1.84       wiz  *	skip		Skip lines that don't start with .
   2229   1.95     enami  *	keep_newline	Keep newline character as is.
   2230   1.84       wiz  *
   2231    1.5       cgd  */
   2232    1.5       cgd static char *
   2233   1.95     enami ParseSkipLine(int skip, int keep_newline)
   2234    1.5       cgd {
   2235    1.5       cgd     char *line;
   2236   1.27  christos     int c, lastc, lineLength = 0;
   2237    1.5       cgd     Buffer buf;
   2238    1.5       cgd 
   2239   1.27  christos     buf = Buf_Init(MAKE_BSIZE);
   2240   1.27  christos 
   2241   1.27  christos     do {
   2242   1.27  christos         Buf_Discard(buf, lineLength);
   2243   1.27  christos         lastc = '\0';
   2244   1.27  christos 
   2245   1.27  christos         while (((c = ParseReadc()) != '\n' || lastc == '\\')
   2246   1.27  christos                && c != EOF) {
   2247   1.27  christos             if (c == '\n') {
   2248   1.95     enami                 if (keep_newline)
   2249   1.95     enami                     Buf_AddByte(buf, (Byte)c);
   2250   1.95     enami                 else
   2251   1.95     enami                     Buf_ReplaceLastByte(buf, (Byte)' ');
   2252   1.82   reinoud                 curFile.lineno++;
   2253   1.27  christos 
   2254   1.27  christos                 while ((c = ParseReadc()) == ' ' || c == '\t');
   2255   1.27  christos 
   2256   1.27  christos                 if (c == EOF)
   2257   1.27  christos                     break;
   2258   1.27  christos             }
   2259   1.27  christos 
   2260   1.27  christos             Buf_AddByte(buf, (Byte)c);
   2261   1.27  christos             lastc = c;
   2262   1.27  christos         }
   2263   1.27  christos 
   2264   1.27  christos         if (c == EOF) {
   2265   1.27  christos             Parse_Error(PARSE_FATAL, "Unclosed conditional/for loop");
   2266   1.27  christos             Buf_Destroy(buf, TRUE);
   2267  1.105  christos             return(NULL);
   2268   1.27  christos         }
   2269   1.27  christos 
   2270   1.82   reinoud         curFile.lineno++;
   2271   1.27  christos         Buf_AddByte(buf, (Byte)'\0');
   2272   1.27  christos         line = (char *)Buf_GetAll(buf, &lineLength);
   2273   1.27  christos     } while (skip == 1 && line[0] != '.');
   2274    1.1       cgd 
   2275   1.27  christos     Buf_Destroy(buf, FALSE);
   2276    1.5       cgd     return line;
   2277    1.5       cgd }
   2278    1.1       cgd 
   2279    1.1       cgd 
   2280    1.1       cgd /*-
   2281    1.1       cgd  *---------------------------------------------------------------------
   2282    1.1       cgd  * ParseReadLine --
   2283    1.1       cgd  *	Read an entire line from the input file. Called only by Parse_File.
   2284    1.1       cgd  *	To facilitate escaped newlines and what have you, a character is
   2285    1.1       cgd  *	buffered in 'lastc', which is '\0' when no characters have been
   2286    1.1       cgd  *	read. When we break out of the loop, c holds the terminating
   2287    1.1       cgd  *	character and lastc holds a character that should be added to
   2288    1.1       cgd  *	the line (unless we don't read anything but a terminator).
   2289    1.1       cgd  *
   2290    1.1       cgd  * Results:
   2291    1.1       cgd  *	A line w/o its newline
   2292    1.1       cgd  *
   2293    1.1       cgd  * Side Effects:
   2294    1.1       cgd  *	Only those associated with reading a character
   2295    1.1       cgd  *---------------------------------------------------------------------
   2296    1.1       cgd  */
   2297    1.1       cgd static char *
   2298   1.84       wiz ParseReadLine(void)
   2299    1.1       cgd {
   2300    1.1       cgd     Buffer  	  buf;	    	/* Buffer for current line */
   2301   1.84       wiz     int		  c;	      	/* the current character */
   2302   1.84       wiz     int		  lastc;    	/* The most-recent character */
   2303    1.1       cgd     Boolean	  semiNL;     	/* treat semi-colons as newlines */
   2304    1.1       cgd     Boolean	  ignDepOp;   	/* TRUE if should ignore dependency operators
   2305    1.1       cgd 				 * for the purposes of setting semiNL */
   2306    1.1       cgd     Boolean 	  ignComment;	/* TRUE if should ignore comments (in a
   2307    1.1       cgd 				 * shell command */
   2308    1.9       jtc     char 	  *line;    	/* Result */
   2309   1.12  christos     char          *ep;		/* to strip trailing blanks */
   2310    1.1       cgd     int	    	  lineLength;	/* Length of result */
   2311   1.95     enami     int	    	  lineno;	/* Saved line # */
   2312    1.1       cgd 
   2313    1.1       cgd     semiNL = FALSE;
   2314    1.1       cgd     ignDepOp = FALSE;
   2315    1.1       cgd     ignComment = FALSE;
   2316    1.1       cgd 
   2317    1.1       cgd     /*
   2318  1.121       dsl      * Handle special-characters at the beginning of the line.
   2319  1.121       dsl      * A leading tab (shell command) forces us to ignore comments and
   2320  1.121       dsl      * dependency operators and treat semi-colons as semi-colons
   2321  1.121       dsl      * (by leaving semiNL FALSE).
   2322  1.121       dsl      * This also discards completely blank lines.
   2323    1.1       cgd      */
   2324    1.5       cgd     for (;;) {
   2325    1.1       cgd 	c = ParseReadc();
   2326  1.121       dsl 	if (c == '\n') {
   2327  1.121       dsl 	    curFile.lineno++;
   2328  1.121       dsl 	    continue;
   2329  1.121       dsl 	}
   2330    1.1       cgd 
   2331  1.121       dsl 	if (c == '\t')
   2332    1.1       cgd 	    ignComment = ignDepOp = TRUE;
   2333  1.121       dsl 	else if (c == '#')
   2334  1.121       dsl 	    ParseUnreadc(c);
   2335  1.121       dsl 	break;
   2336  1.121       dsl     }
   2337  1.121       dsl 
   2338  1.121       dsl     if (c == EOF)
   2339  1.121       dsl 	/*
   2340  1.121       dsl 	 * Hit end-of-file, so return a NULL line to indicate this.
   2341  1.121       dsl 	 */
   2342  1.121       dsl 	return(NULL);
   2343  1.121       dsl 
   2344  1.121       dsl     lastc = c;
   2345  1.121       dsl     buf = Buf_Init(MAKE_BSIZE);
   2346  1.121       dsl 
   2347  1.121       dsl     while (((c = ParseReadc()) != '\n' || (lastc == '\\')) && (c != EOF)) {
   2348  1.121       dsl test_char:
   2349  1.121       dsl 	switch (c) {
   2350  1.121       dsl 	case '\n':
   2351  1.121       dsl 	    /*
   2352  1.121       dsl 	     * Escaped newline: read characters until a non-space or an
   2353  1.121       dsl 	     * unescaped newline and replace them all by a single space.
   2354  1.121       dsl 	     * This is done by storing the space over the backslash and
   2355  1.121       dsl 	     * dropping through with the next nonspace. If it is a
   2356  1.121       dsl 	     * semi-colon and semiNL is TRUE, it will be recognized as a
   2357  1.121       dsl 	     * newline in the code below this...
   2358  1.121       dsl 	     */
   2359   1.82   reinoud 	    curFile.lineno++;
   2360  1.121       dsl 	    lastc = ' ';
   2361  1.121       dsl 	    while ((c = ParseReadc()) == ' ' || c == '\t')
   2362  1.121       dsl 		continue;
   2363  1.121       dsl 	    if (c == EOF || c == '\n')
   2364  1.121       dsl 		goto line_read;
   2365    1.1       cgd 	    /*
   2366  1.121       dsl 	     * Check for comments, semiNL's, etc. -- easier than
   2367  1.121       dsl 	     * ParseUnreadc(c); continue;
   2368    1.1       cgd 	     */
   2369  1.121       dsl 	    goto test_char;
   2370   1.27  christos 
   2371  1.121       dsl 	case ';':
   2372  1.121       dsl 	    /*
   2373  1.121       dsl 	     * Semi-colon: Need to see if it should be interpreted as a
   2374  1.121       dsl 	     * newline
   2375  1.121       dsl 	     */
   2376  1.121       dsl 	    if (!semiNL)
   2377  1.121       dsl 		break;
   2378  1.121       dsl 	    /*
   2379  1.121       dsl 	     * To make sure the command that may be following this
   2380  1.121       dsl 	     * semi-colon begins with a tab, we push one back into the
   2381  1.121       dsl 	     * input stream. This will overwrite the semi-colon in the
   2382  1.121       dsl 	     * buffer. If there is no command following, this does no
   2383  1.121       dsl 	     * harm, since the newline remains in the buffer and the
   2384  1.121       dsl 	     * whole line is ignored.
   2385  1.121       dsl 	     */
   2386  1.121       dsl 	    ParseUnreadc('\t');
   2387  1.121       dsl 	    goto line_read;
   2388   1.27  christos 
   2389  1.121       dsl 	case '=':
   2390  1.121       dsl 	    if (!semiNL) {
   2391    1.1       cgd 		/*
   2392  1.121       dsl 		 * Haven't seen a dependency operator before this, so this
   2393  1.121       dsl 		 * must be a variable assignment -- don't pay attention to
   2394  1.121       dsl 		 * dependency operators after this.
   2395    1.1       cgd 		 */
   2396  1.121       dsl 		ignDepOp = TRUE;
   2397  1.121       dsl 	    } else if (lastc == ':' || lastc == '!') {
   2398    1.1       cgd 		/*
   2399  1.121       dsl 		 * Well, we've seen a dependency operator already, but it
   2400  1.121       dsl 		 * was the previous character, so this is really just an
   2401  1.121       dsl 		 * expanded variable assignment. Revert semi-colons to
   2402  1.121       dsl 		 * being just semi-colons again and ignore any more
   2403  1.121       dsl 		 * dependency operators.
   2404  1.121       dsl 		 *
   2405  1.121       dsl 		 * XXX: Note that a line like "foo : a:=b" will blow up,
   2406  1.121       dsl 		 * but who'd write a line like that anyway?
   2407    1.1       cgd 		 */
   2408  1.121       dsl 		ignDepOp = TRUE;
   2409  1.121       dsl 		semiNL = FALSE;
   2410  1.121       dsl 	    }
   2411  1.121       dsl 	    break;
   2412  1.121       dsl 
   2413  1.121       dsl 	case '#':
   2414  1.121       dsl 	    if (ignComment)
   2415    1.1       cgd 		break;
   2416  1.121       dsl 	    if (
   2417   1.17  christos #if 0
   2418  1.121       dsl 		    !compatMake ||
   2419   1.17  christos #endif
   2420  1.121       dsl 		    (lastc == '\\')) {
   2421  1.121       dsl 		/* Don't add the backslash. Just let the # get copied over. */
   2422  1.121       dsl 		lastc = c;
   2423  1.121       dsl 		continue;
   2424    1.1       cgd 	    }
   2425    1.1       cgd 	    /*
   2426  1.121       dsl 	     * If the character is a hash mark and it isn't escaped
   2427  1.121       dsl 	     * (or we're being compatible), the thing is a comment.
   2428  1.121       dsl 	     * Skip to the end of the line.
   2429    1.1       cgd 	     */
   2430  1.121       dsl 	    do {
   2431  1.121       dsl 		c = ParseReadc();
   2432  1.121       dsl 		/*
   2433  1.121       dsl 		 * If we found a backslash not escaped itself it means
   2434  1.121       dsl 		 * that the comment is going to continue in the next line.
   2435  1.121       dsl 		 */
   2436  1.121       dsl 		if (c == '\\')
   2437  1.121       dsl 		    /* Discard the (escaped) character after the '\\' */
   2438  1.121       dsl 		    ParseReadc();
   2439  1.121       dsl 	    } while ((c != '\n') && (c != EOF));
   2440  1.121       dsl 	    goto line_read;
   2441   1.27  christos 
   2442  1.121       dsl 	case ':':
   2443  1.121       dsl 	case '!':
   2444  1.121       dsl 	    if (!ignDepOp) {
   2445  1.121       dsl 		/*
   2446  1.121       dsl 		 * A semi-colon is recognized as a newline only on
   2447  1.121       dsl 		 * dependency lines. Dependency lines are lines with a
   2448  1.121       dsl 		 * colon or an exclamation point. Ergo...
   2449  1.121       dsl 		 */
   2450  1.121       dsl 		semiNL = TRUE;
   2451  1.121       dsl 	    }
   2452  1.121       dsl 	    break;
   2453    1.1       cgd 	}
   2454   1.27  christos 
   2455  1.121       dsl 	/* Copy in the previous character and save this one in lastc. */
   2456  1.121       dsl 	Buf_AddByte(buf, (Byte)lastc);
   2457  1.121       dsl 	lastc = c;
   2458  1.121       dsl     }
   2459  1.121       dsl 
   2460  1.121       dsl line_read:
   2461  1.121       dsl     curFile.lineno++;
   2462  1.121       dsl 
   2463  1.121       dsl     if (lastc != '\0') {
   2464  1.121       dsl 	Buf_AddByte(buf, (Byte)lastc);
   2465  1.121       dsl     }
   2466  1.121       dsl     Buf_AddByte(buf, (Byte)'\0');
   2467  1.121       dsl     line = (char *)Buf_GetAll(buf, &lineLength);
   2468  1.121       dsl     Buf_Destroy(buf, FALSE);
   2469  1.121       dsl 
   2470  1.121       dsl     /*
   2471  1.121       dsl      * Strip trailing blanks and tabs from the line.
   2472  1.121       dsl      * Do not strip a blank or tab that is preceded by a '\'
   2473  1.121       dsl      */
   2474  1.121       dsl     ep = line + lineLength - 1;
   2475  1.121       dsl     while (ep > line + 1 && (ep[-1] == ' ' || ep[-1] == '\t')) {
   2476  1.121       dsl 	if (ep > line + 1 && ep[-2] == '\\')
   2477  1.121       dsl 	    break;
   2478  1.121       dsl 	--ep;
   2479  1.121       dsl     }
   2480  1.121       dsl     *ep = 0;
   2481  1.121       dsl 
   2482  1.121       dsl     if (line[0] != '.')
   2483  1.121       dsl 	return line;
   2484   1.12  christos 
   2485  1.121       dsl     /*
   2486  1.121       dsl      * The line might be a conditional. Ask the conditional module
   2487  1.121       dsl      * about it and act accordingly
   2488  1.121       dsl      */
   2489  1.121       dsl     switch (Cond_Eval(line)) {
   2490  1.121       dsl     case COND_SKIP:
   2491   1.12  christos 	/*
   2492  1.121       dsl 	 * Skip to next conditional that evaluates to COND_PARSE.
   2493   1.12  christos 	 */
   2494  1.121       dsl 	do {
   2495  1.121       dsl 	    free(line);
   2496  1.121       dsl 	    line = ParseSkipLine(1, 0);
   2497  1.121       dsl 	} while (line && Cond_Eval(line) != COND_PARSE);
   2498  1.121       dsl 	if (line == NULL)
   2499  1.121       dsl 	    break;
   2500  1.121       dsl 	/*FALLTHRU*/
   2501  1.121       dsl     case COND_PARSE:
   2502  1.121       dsl 	free(line);
   2503  1.121       dsl 	line = ParseReadLine();
   2504  1.121       dsl 	break;
   2505  1.121       dsl     case COND_INVALID:
   2506  1.121       dsl 	lineno = curFile.lineno;
   2507  1.121       dsl 	if (For_Eval(line)) {
   2508  1.121       dsl 	    int ok;
   2509  1.121       dsl 	    free(line);
   2510  1.121       dsl 	    do {
   2511  1.121       dsl 		/* Skip after the matching end */
   2512  1.121       dsl 		line = ParseSkipLine(0, 1);
   2513  1.121       dsl 		if (line == NULL) {
   2514  1.121       dsl 		    Parse_Error(PARSE_FATAL,
   2515  1.121       dsl 			     "Unexpected end of file in for loop.\n");
   2516    1.5       cgd 		    break;
   2517  1.121       dsl 		}
   2518  1.121       dsl 		ok = For_Eval(line);
   2519  1.104  christos 		free(line);
   2520    1.1       cgd 	    }
   2521  1.121       dsl 	    while (ok);
   2522  1.121       dsl 	    if (line != NULL)
   2523  1.121       dsl 		For_Run(lineno);
   2524  1.121       dsl 	    line = ParseReadLine();
   2525    1.1       cgd 	}
   2526  1.121       dsl 	break;
   2527    1.1       cgd     }
   2528  1.121       dsl     return (line);
   2529    1.1       cgd }
   2530    1.1       cgd 
   2531    1.1       cgd /*-
   2532    1.1       cgd  *-----------------------------------------------------------------------
   2533    1.1       cgd  * ParseFinishLine --
   2534    1.1       cgd  *	Handle the end of a dependency group.
   2535    1.1       cgd  *
   2536    1.1       cgd  * Results:
   2537    1.1       cgd  *	Nothing.
   2538    1.1       cgd  *
   2539    1.1       cgd  * Side Effects:
   2540    1.1       cgd  *	inLine set FALSE. 'targets' list destroyed.
   2541    1.1       cgd  *
   2542    1.1       cgd  *-----------------------------------------------------------------------
   2543    1.1       cgd  */
   2544    1.1       cgd static void
   2545   1.84       wiz ParseFinishLine(void)
   2546    1.1       cgd {
   2547    1.1       cgd     if (inLine) {
   2548  1.119       dsl 	Lst_ForEach(targets, Suff_EndTransform, NULL);
   2549   1.97  christos 	Lst_Destroy(targets, ParseHasCommands);
   2550    1.9       jtc 	targets = NULL;
   2551    1.1       cgd 	inLine = FALSE;
   2552    1.1       cgd     }
   2553    1.1       cgd }
   2554   1.27  christos 
   2555    1.1       cgd 
   2556    1.1       cgd /*-
   2557    1.1       cgd  *---------------------------------------------------------------------
   2558    1.1       cgd  * Parse_File --
   2559    1.1       cgd  *	Parse a file into its component parts, incorporating it into the
   2560    1.1       cgd  *	current dependency graph. This is the main function and controls
   2561    1.1       cgd  *	almost every other function in this module
   2562    1.1       cgd  *
   2563   1.84       wiz  * Input:
   2564   1.84       wiz  *	name		the name of the file being read
   2565   1.84       wiz  *	stream		Stream open to makefile to parse
   2566   1.84       wiz  *
   2567    1.1       cgd  * Results:
   2568    1.1       cgd  *	None
   2569    1.1       cgd  *
   2570    1.1       cgd  * Side Effects:
   2571    1.1       cgd  *	Loads. Nodes are added to the list of all targets, nodes and links
   2572    1.1       cgd  *	are added to the dependency graph. etc. etc. etc.
   2573    1.1       cgd  *---------------------------------------------------------------------
   2574    1.1       cgd  */
   2575    1.1       cgd void
   2576   1.93  christos Parse_File(const char *name, FILE *stream)
   2577    1.1       cgd {
   2578  1.117       dsl     char	  *cp;		/* pointer into the line */
   2579  1.117       dsl     char          *line;	/* the line we're working on */
   2580  1.117       dsl #ifndef POSIX
   2581  1.117       dsl     Boolean	nonSpace;
   2582  1.117       dsl #endif
   2583    1.1       cgd 
   2584    1.1       cgd     inLine = FALSE;
   2585    1.1       cgd     fatals = 0;
   2586   1.44     aidan 
   2587   1.93  christos     curFile.fname = UNCONST(name);
   2588   1.82   reinoud     curFile.F = stream;
   2589   1.82   reinoud     curFile.lineno = 0;
   2590   1.82   reinoud 
   2591   1.82   reinoud     ParseSetParseFile(curFile.fname);
   2592    1.1       cgd 
   2593    1.1       cgd     do {
   2594  1.117       dsl 	for (; (line = ParseReadLine()) != NULL; free(line)) {
   2595  1.120       dsl 	    if (DEBUG(PARSE))
   2596  1.120       dsl 		fprintf(debug_file, "ParseReadLine: %s\n", line);
   2597    1.1       cgd 	    if (*line == '.') {
   2598    1.1       cgd 		/*
   2599    1.1       cgd 		 * Lines that begin with the special character are either
   2600    1.1       cgd 		 * include or undef directives.
   2601    1.1       cgd 		 */
   2602   1.40  christos 		for (cp = line + 1; isspace ((unsigned char)*cp); cp++) {
   2603    1.1       cgd 		    continue;
   2604    1.1       cgd 		}
   2605   1.38  christos 		if (strncmp(cp, "include", 7) == 0 ||
   2606   1.38  christos 	    	    ((cp[0] == 's' || cp[0] == '-') &&
   2607   1.41      ross 		    strncmp(&cp[1], "include", 7) == 0)) {
   2608   1.97  christos 		    ParseDoInclude(cp);
   2609  1.117       dsl 		    continue;
   2610  1.117       dsl 		}
   2611  1.117       dsl 		if (strncmp(cp, "undef", 5) == 0) {
   2612    1.1       cgd 		    char *cp2;
   2613    1.9       jtc 		    for (cp += 5; isspace((unsigned char) *cp); cp++) {
   2614    1.1       cgd 			continue;
   2615    1.1       cgd 		    }
   2616    1.1       cgd 
   2617    1.9       jtc 		    for (cp2 = cp; !isspace((unsigned char) *cp2) &&
   2618    1.9       jtc 				   (*cp2 != '\0'); cp2++) {
   2619    1.1       cgd 			continue;
   2620    1.1       cgd 		    }
   2621    1.1       cgd 
   2622    1.1       cgd 		    *cp2 = '\0';
   2623    1.1       cgd 
   2624    1.1       cgd 		    Var_Delete(cp, VAR_GLOBAL);
   2625  1.117       dsl 		    continue;
   2626    1.1       cgd 		}
   2627    1.1       cgd 	    }
   2628   1.27  christos 	    if (*line == '#') {
   2629   1.27  christos 		/* If we're this far, the line must be a comment. */
   2630  1.117       dsl 		continue;
   2631    1.1       cgd 	    }
   2632   1.27  christos 
   2633    1.6       jtc 	    if (*line == '\t') {
   2634    1.1       cgd 		/*
   2635    1.6       jtc 		 * If a line starts with a tab, it can only hope to be
   2636    1.6       jtc 		 * a creation command.
   2637    1.1       cgd 		 */
   2638    1.7       cgd #ifndef POSIX
   2639    1.1       cgd 	    shellCommand:
   2640    1.7       cgd #endif
   2641   1.40  christos 		for (cp = line + 1; isspace ((unsigned char)*cp); cp++) {
   2642    1.1       cgd 		    continue;
   2643    1.1       cgd 		}
   2644    1.1       cgd 		if (*cp) {
   2645  1.117       dsl 		    if (!inLine)
   2646   1.97  christos 			Parse_Error(PARSE_FATAL,
   2647   1.25  christos 				     "Unassociated shell command \"%s\"",
   2648    1.1       cgd 				     cp);
   2649  1.117       dsl 		    /*
   2650  1.117       dsl 		     * So long as it's not a blank line and we're actually
   2651  1.117       dsl 		     * in a dependency spec, add the command to the list of
   2652  1.117       dsl 		     * commands of all targets in the dependency spec
   2653  1.117       dsl 		     */
   2654  1.117       dsl 		    Lst_ForEach(targets, ParseAddCmd, cp);
   2655  1.117       dsl #ifdef CLEANUP
   2656  1.119       dsl 		    Lst_AtEnd(targCmds, line);
   2657  1.117       dsl #endif
   2658  1.117       dsl 		    line = 0;
   2659    1.1       cgd 		}
   2660  1.117       dsl 		continue;
   2661  1.117       dsl 	    }
   2662  1.117       dsl 
   2663    1.5       cgd #ifdef SYSVINCLUDE
   2664  1.117       dsl 	    if (((strncmp(line, "include", 7) == 0 &&
   2665  1.117       dsl 		    isspace((unsigned char) line[7])) ||
   2666  1.117       dsl 			((line[0] == 's' || line[0] == '-') &&
   2667  1.117       dsl 			    strncmp(&line[1], "include", 7) == 0 &&
   2668  1.117       dsl 			    isspace((unsigned char) line[8]))) &&
   2669  1.117       dsl 		    strchr(line, ':') == NULL) {
   2670    1.5       cgd 		/*
   2671    1.5       cgd 		 * It's an S3/S5-style "include".
   2672    1.5       cgd 		 */
   2673   1.97  christos 		ParseTraditionalInclude(line);
   2674  1.117       dsl 		continue;
   2675  1.117       dsl 	    }
   2676    1.5       cgd #endif
   2677  1.117       dsl 	    if (Parse_IsVar(line)) {
   2678    1.1       cgd 		ParseFinishLine();
   2679   1.97  christos 		Parse_DoVar(line, VAR_GLOBAL);
   2680  1.117       dsl 		continue;
   2681  1.117       dsl 	    }
   2682  1.117       dsl 
   2683  1.117       dsl 	    /*
   2684  1.117       dsl 	     * We now know it's a dependency line so it needs to have all
   2685  1.117       dsl 	     * variables expanded before being parsed. Tell the variable
   2686  1.117       dsl 	     * module to complain if some variable is undefined...
   2687  1.117       dsl 	     * To make life easier on novices, if the line is indented we
   2688  1.117       dsl 	     * first make sure the line has a dependency operator in it.
   2689  1.117       dsl 	     * If it doesn't have an operator and we're in a dependency
   2690  1.117       dsl 	     * line's script, we assume it's actually a shell command
   2691  1.117       dsl 	     * and add it to the current list of targets.
   2692  1.117       dsl 	     */
   2693    1.7       cgd #ifndef POSIX
   2694  1.117       dsl 	    nonSpace = FALSE;
   2695    1.7       cgd #endif
   2696   1.27  christos 
   2697  1.117       dsl 	    cp = line;
   2698  1.117       dsl 	    if (isspace((unsigned char) line[0])) {
   2699  1.117       dsl 		while ((*cp != '\0') && isspace((unsigned char) *cp)) {
   2700  1.117       dsl 		    cp++;
   2701  1.117       dsl 		}
   2702  1.117       dsl 		if (*cp == '\0') {
   2703  1.117       dsl 		    /* Ignore blank line in commands */
   2704  1.117       dsl 		    continue;
   2705  1.117       dsl 		}
   2706    1.1       cgd #ifndef POSIX
   2707  1.117       dsl 		while (*cp && (ParseIsEscaped(line, cp) ||
   2708   1.77  christos 			(*cp != ':') && (*cp != '!'))) {
   2709  1.117       dsl 		    nonSpace = TRUE;
   2710  1.117       dsl 		    cp++;
   2711  1.117       dsl 		}
   2712   1.11   mycroft #endif
   2713  1.117       dsl 	    }
   2714   1.27  christos 
   2715   1.11   mycroft #ifndef POSIX
   2716  1.117       dsl 	    if (*cp == '\0') {
   2717  1.117       dsl 		if (inLine) {
   2718  1.117       dsl 		    Parse_Error(PARSE_WARNING,
   2719  1.117       dsl 				 "Shell command needs a leading tab");
   2720  1.117       dsl 		    goto shellCommand;
   2721  1.117       dsl 		} else if (nonSpace) {
   2722  1.117       dsl 		    Parse_Error(PARSE_FATAL, "Missing operator");
   2723  1.117       dsl 		}
   2724  1.117       dsl 		continue;
   2725  1.117       dsl 	    }
   2726    1.1       cgd #endif
   2727  1.117       dsl 	    ParseFinishLine();
   2728    1.1       cgd 
   2729  1.117       dsl 	    cp = Var_Subst(NULL, line, VAR_CMD, TRUE);
   2730  1.117       dsl 	    free(line);
   2731  1.117       dsl 	    line = cp;
   2732   1.27  christos 
   2733  1.117       dsl 	    /*
   2734  1.117       dsl 	     * Need a non-circular list for the target nodes
   2735  1.117       dsl 	     */
   2736  1.117       dsl 	    if (targets)
   2737  1.117       dsl 		Lst_Destroy(targets, NOFREE);
   2738    1.9       jtc 
   2739  1.117       dsl 	    targets = Lst_Init(FALSE);
   2740  1.117       dsl 	    inLine = TRUE;
   2741   1.27  christos 
   2742  1.117       dsl 	    ParseDoDependency(line);
   2743    1.1       cgd 	}
   2744    1.1       cgd 	/*
   2745   1.27  christos 	 * Reached EOF, but it may be just EOF of an include file...
   2746    1.1       cgd 	 */
   2747    1.1       cgd     } while (ParseEOF(1) == CONTINUE);
   2748    1.1       cgd 
   2749    1.1       cgd     /*
   2750    1.1       cgd      * Make sure conditionals are clean
   2751    1.1       cgd      */
   2752    1.1       cgd     Cond_End();
   2753    1.1       cgd 
   2754    1.1       cgd     if (fatals) {
   2755   1.63  christos 	(void)fprintf(stderr,
   2756   1.63  christos 	    "%s: Fatal errors encountered -- cannot continue\n",
   2757   1.63  christos 	    progname);
   2758   1.64       sjg 	PrintOnError(NULL);
   2759  1.103  christos 	exit(1);
   2760    1.1       cgd     }
   2761    1.1       cgd }
   2762    1.1       cgd 
   2763    1.1       cgd /*-
   2764    1.1       cgd  *---------------------------------------------------------------------
   2765    1.1       cgd  * Parse_Init --
   2766    1.1       cgd  *	initialize the parsing module
   2767    1.1       cgd  *
   2768    1.1       cgd  * Results:
   2769    1.1       cgd  *	none
   2770    1.1       cgd  *
   2771    1.1       cgd  * Side Effects:
   2772    1.1       cgd  *	the parseIncPath list is initialized...
   2773    1.1       cgd  *---------------------------------------------------------------------
   2774    1.1       cgd  */
   2775    1.5       cgd void
   2776   1.84       wiz Parse_Init(void)
   2777    1.1       cgd {
   2778    1.1       cgd     mainNode = NILGNODE;
   2779   1.97  christos     parseIncPath = Lst_Init(FALSE);
   2780   1.97  christos     sysIncPath = Lst_Init(FALSE);
   2781   1.97  christos     defIncPath = Lst_Init(FALSE);
   2782   1.97  christos     includes = Lst_Init(FALSE);
   2783   1.45   mycroft #ifdef CLEANUP
   2784   1.97  christos     targCmds = Lst_Init(FALSE);
   2785   1.45   mycroft #endif
   2786    1.1       cgd }
   2787    1.9       jtc 
   2788    1.9       jtc void
   2789   1.84       wiz Parse_End(void)
   2790    1.9       jtc {
   2791   1.45   mycroft #ifdef CLEANUP
   2792  1.106  christos     Lst_Destroy(targCmds, (FreeProc *)free);
   2793    1.9       jtc     if (targets)
   2794    1.9       jtc 	Lst_Destroy(targets, NOFREE);
   2795   1.74        tv     Lst_Destroy(defIncPath, Dir_Destroy);
   2796    1.9       jtc     Lst_Destroy(sysIncPath, Dir_Destroy);
   2797    1.9       jtc     Lst_Destroy(parseIncPath, Dir_Destroy);
   2798    1.9       jtc     Lst_Destroy(includes, NOFREE);	/* Should be empty now */
   2799   1.45   mycroft #endif
   2800    1.9       jtc }
   2801   1.27  christos 
   2802    1.1       cgd 
   2803    1.1       cgd /*-
   2804    1.1       cgd  *-----------------------------------------------------------------------
   2805    1.1       cgd  * Parse_MainName --
   2806    1.1       cgd  *	Return a Lst of the main target to create for main()'s sake. If
   2807    1.1       cgd  *	no such target exists, we Punt with an obnoxious error message.
   2808    1.1       cgd  *
   2809    1.1       cgd  * Results:
   2810    1.1       cgd  *	A Lst of the single node to create.
   2811    1.1       cgd  *
   2812    1.1       cgd  * Side Effects:
   2813    1.1       cgd  *	None.
   2814    1.1       cgd  *
   2815    1.1       cgd  *-----------------------------------------------------------------------
   2816    1.1       cgd  */
   2817    1.1       cgd Lst
   2818   1.84       wiz Parse_MainName(void)
   2819    1.1       cgd {
   2820   1.37      fair     Lst           mainList;	/* result list */
   2821    1.1       cgd 
   2822   1.97  christos     mainList = Lst_Init(FALSE);
   2823    1.1       cgd 
   2824    1.1       cgd     if (mainNode == NILGNODE) {
   2825   1.97  christos 	Punt("no target to make.");
   2826    1.1       cgd     	/*NOTREACHED*/
   2827    1.1       cgd     } else if (mainNode->type & OP_DOUBLEDEP) {
   2828  1.119       dsl 	(void)Lst_AtEnd(mainList, mainNode);
   2829   1.37      fair 	Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW);
   2830    1.1       cgd     }
   2831    1.5       cgd     else
   2832  1.119       dsl 	(void)Lst_AtEnd(mainList, mainNode);
   2833   1.81        pk     Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL);
   2834   1.37      fair     return (mainList);
   2835   1.59  christos }
   2836   1.59  christos 
   2837   1.59  christos /*-
   2838   1.59  christos  *-----------------------------------------------------------------------
   2839   1.59  christos  * ParseMark --
   2840   1.59  christos  *	Add the filename and lineno to the GNode so that we remember
   2841   1.59  christos  *	where it was first defined.
   2842   1.59  christos  *
   2843   1.59  christos  * Side Effects:
   2844   1.59  christos  *	None.
   2845   1.59  christos  *
   2846   1.59  christos  *-----------------------------------------------------------------------
   2847   1.59  christos  */
   2848   1.59  christos static void
   2849   1.84       wiz ParseMark(GNode *gn)
   2850   1.59  christos {
   2851   1.82   reinoud     gn->fname = strdup(curFile.fname);
   2852   1.82   reinoud     gn->lineno = curFile.lineno;
   2853    1.1       cgd }
   2854