Home | History | Annotate | Line # | Download | only in sed
defs.h revision 1.8 
      1 /*	$NetBSD: defs.h,v 1.8 2003/08/07 11:15:49 agc Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Diomidis Spinellis of Imperial College, University of London.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	from: @(#)defs.h	8.1 (Berkeley) 6/6/93
     35  *	$NetBSD: defs.h,v 1.8 2003/08/07 11:15:49 agc Exp $
     36  */
     37 
     38 /*-
     39  * Copyright (c) 1992 Diomidis Spinellis.
     40  *
     41  * This code is derived from software contributed to Berkeley by
     42  * Diomidis Spinellis of Imperial College, University of London.
     43  *
     44  * Redistribution and use in source and binary forms, with or without
     45  * modification, are permitted provided that the following conditions
     46  * are met:
     47  * 1. Redistributions of source code must retain the above copyright
     48  *    notice, this list of conditions and the following disclaimer.
     49  * 2. Redistributions in binary form must reproduce the above copyright
     50  *    notice, this list of conditions and the following disclaimer in the
     51  *    documentation and/or other materials provided with the distribution.
     52  * 3. All advertising materials mentioning features or use of this software
     53  *    must display the following acknowledgement:
     54  *	This product includes software developed by the University of
     55  *	California, Berkeley and its contributors.
     56  * 4. Neither the name of the University nor the names of its contributors
     57  *    may be used to endorse or promote products derived from this software
     58  *    without specific prior written permission.
     59  *
     60  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     61  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     62  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     63  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     64  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     65  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     66  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     67  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     68  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     69  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     70  * SUCH DAMAGE.
     71  *
     72  *	from: @(#)defs.h	8.1 (Berkeley) 6/6/93
     73  *	$NetBSD: defs.h,v 1.8 2003/08/07 11:15:49 agc Exp $
     74  */
     75 
     76 /*
     77  * Types of address specifications
     78  */
     79 enum e_atype {
     80 	AT_RE,					/* Line that match RE */
     81 	AT_LINE,				/* Specific line */
     82 	AT_LAST,				/* Last line */
     83 };
     84 
     85 /*
     86  * Format of an address
     87  */
     88 struct s_addr {
     89 	enum e_atype type;			/* Address type */
     90 	union {
     91 		u_long l;			/* Line number */
     92 		regex_t *r;			/* Regular expression */
     93 	} u;
     94 };
     95 
     96 /*
     97  * Substitution command
     98  */
     99 struct s_subst {
    100 	int n;					/* Occurrence to subst. */
    101 	int p;					/* True if p flag */
    102 	char *wfile;				/* NULL if no wfile */
    103 	int wfd;				/* Cached file descriptor */
    104 	regex_t *re;				/* Regular expression */
    105 	int maxbref;				/* Largest backreference. */
    106 	u_long linenum;				/* Line number. */
    107 	char *new;				/* Replacement text */
    108 };
    109 
    110 
    111 /*
    112  * An internally compiled command.
    113  * Initialy, label references are stored in t, on a second pass they
    114  * are updated to pointers.
    115  */
    116 struct s_command {
    117 	struct s_command *next;			/* Pointer to next command */
    118 	struct s_addr *a1, *a2;			/* Start and end address */
    119 	char *t;				/* Text for : a c i r w */
    120 	union {
    121 		struct s_command *c;		/* Command(s) for b t { */
    122 		struct s_subst *s;		/* Substitute command */
    123 		u_char *y;			/* Replace command array */
    124 		int fd;				/* File descriptor for w */
    125 	} u;
    126 	char code;				/* Command code */
    127 	u_int nonsel:1;				/* True if ! */
    128 	u_int inrange:1;			/* True if in range */
    129 };
    130 
    131 /*
    132  * Types of command arguments recognised by the parser
    133  */
    134 enum e_args {
    135 	EMPTY,			/* d D g G h H l n N p P q x = \0 */
    136 	TEXT,			/* a c i */
    137 	NONSEL,			/* ! */
    138 	GROUP,			/* { */
    139 	ENDGROUP,		/* } */
    140 	COMMENT,		/* # */
    141 	BRANCH,			/* b t */
    142 	LABEL,			/* : */
    143 	RFILE,			/* r */
    144 	WFILE,			/* w */
    145 	SUBST,			/* s */
    146 	TR			/* y */
    147 };
    148 
    149 /*
    150  * Structure containing things to append before a line is read
    151  */
    152 struct s_appends {
    153 	enum {AP_STRING, AP_FILE} type;
    154 	char *s;
    155 	size_t len;
    156 };
    157 
    158 enum e_spflag {
    159 	APPEND,					/* Append to the contents. */
    160 	REPLACE,				/* Replace the contents. */
    161 };
    162 
    163 /*
    164  * Structure for a space (process, hold, otherwise).
    165  */
    166 typedef struct {
    167 	char *space;		/* Current space pointer. */
    168 	size_t len;		/* Current length. */
    169 	int deleted;		/* If deleted. */
    170 	char *back;		/* Backing memory. */
    171 	size_t blen;		/* Backing memory length. */
    172 } SPACE;
    173 
    174 /*
    175  * Error severity codes:
    176  */
    177 #define	FATAL		0	/* Exit immediately with 1 */
    178 #define	ERROR		1	/* Continue, but change exit value */
    179 #define	WARNING		2	/* Just print the warning */
    180 #define	COMPILE		3	/* Print error, count and finish script */
    181 #define	COMPILE2	3	/* Print error, count and finish script */
    182