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fsplit.c revision 1.7 
      1 /*
      2  * Copyright (c) 1983, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * This code is derived from software contributed to Berkeley by
      6  * Asa Romberger and Jerry Berkman.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by the University of
     19  *	California, Berkeley and its contributors.
     20  * 4. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  */
     36 
     37 #include <sys/cdefs.h>
     38 #ifndef lint
     39 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\
     40 	The Regents of the University of California.  All rights reserved.\n");
     41 #endif /* not lint */
     42 
     43 #ifndef lint
     44 #if 0
     45 static char sccsid[] = "from: @(#)fsplit.c	8.1 (Berkeley) 6/6/93";
     46 #else
     47 __RCSID("$NetBSD: fsplit.c,v 1.7 1998/12/19 16:38:10 christos Exp $");
     48 #endif
     49 #endif /* not lint */
     50 
     51 #include <sys/types.h>
     52 #include <sys/stat.h>
     53 
     54 #include <ctype.h>
     55 #include <stdio.h>
     56 #include <string.h>
     57 #include <unistd.h>
     58 
     59 /*
     60  *	usage:		fsplit [-e efile] ... [file]
     61  *
     62  *	split single file containing source for several fortran programs
     63  *		and/or subprograms into files each containing one
     64  *		subprogram unit.
     65  *	each separate file will be named using the corresponding subroutine,
     66  *		function, block data or program name if one is found; otherwise
     67  *		the name will be of the form mainNNN.f or blkdtaNNN.f .
     68  *		If a file of that name exists, it is saved in a name of the
     69  *		form zzz000.f .
     70  *	If -e option is used, then only those subprograms named in the -e
     71  *		option are split off; e.g.:
     72  *			fsplit -esub1 -e sub2 prog.f
     73  *		isolates sub1 and sub2 in sub1.f and sub2.f.  The space
     74  *		after -e is optional.
     75  *
     76  *	Modified Feb., 1983 by Jerry Berkman, Computing Services, U.C. Berkeley.
     77  *		- added comments
     78  *		- more function types: double complex, character*(*), etc.
     79  *		- fixed minor bugs
     80  *		- instead of all unnamed going into zNNN.f, put mains in
     81  *		  mainNNN.f, block datas in blkdtaNNN.f, dups in zzzNNN.f .
     82  */
     83 
     84 #define BSZ 512
     85 char buf[BSZ];
     86 FILE *ifp;
     87 char 	x[]="zzz000.f",
     88 	mainp[]="main000.f",
     89 	blkp[]="blkdta000.f";
     90 
     91 void	badparms __P((void));
     92 char   *functs __P((char *));
     93 int	getline __P((void));
     94 void	get_name __P((char *, int));
     95 int	main __P((int, char **));
     96 int	lend __P((void));
     97 int	lname __P((char *));
     98 char   *look __P((char *, char *));
     99 int	saveit __P((char *));
    100 int	scan_name __P((char *, char *));
    101 char   *skiplab __P((char *));
    102 
    103 #define TRUE 1
    104 #define FALSE 0
    105 int	extr = FALSE,
    106 	extrknt = -1,
    107 	extrfnd[100];
    108 char	extrbuf[1000],
    109 	*extrnames[100];
    110 struct stat sbuf;
    111 
    112 #define trim(p)	while (*p == ' ' || *p == '\t') p++
    113 
    114 int
    115 main(argc, argv)
    116 	int argc;
    117 	char **argv;
    118 {
    119 	FILE *ofp;	/* output file */
    120 	int rv;		/* 1 if got card in output file, 0 otherwise */
    121 	char *ptr;
    122 	int nflag;	/* 1 if got name of subprog., 0 otherwise */
    123 	int retval, i;
    124 	char name[20], *extrptr = extrbuf;
    125 
    126 	/*  scan -e options */
    127 	while ( argc > 1  && argv[1][0] == '-' && argv[1][1] == 'e') {
    128 		extr = TRUE;
    129 		ptr = argv[1] + 2;
    130 		if(!*ptr) {
    131 			argc--;
    132 			argv++;
    133 			if(argc <= 1) badparms();
    134 			ptr = argv[1];
    135 		}
    136 		extrknt = extrknt + 1;
    137 		extrnames[extrknt] = extrptr;
    138 		extrfnd[extrknt] = FALSE;
    139 		while(*ptr) *extrptr++ = *ptr++;
    140 		*extrptr++ = 0;
    141 		argc--;
    142 		argv++;
    143 	}
    144 
    145 	if (argc > 2)
    146 		badparms();
    147 	else if (argc == 2) {
    148 		if ((ifp = fopen(argv[1], "r")) == NULL) {
    149 			fprintf(stderr, "fsplit: cannot open %s\n", argv[1]);
    150 			exit(1);
    151 		}
    152 	}
    153 	else
    154 		ifp = stdin;
    155     for(;;) {
    156 	/* look for a temp file that doesn't correspond to an existing file */
    157 	get_name(x, 3);
    158 	ofp = fopen(x, "w");
    159 	nflag = 0;
    160 	rv = 0;
    161 	while (getline() > 0) {
    162 		rv = 1;
    163 		fprintf(ofp, "%s", buf);
    164 		if (lend())		/* look for an 'end' statement */
    165 			break;
    166 		if (nflag == 0)		/* if no name yet, try and find one */
    167 			nflag = lname(name);
    168 	}
    169 	fclose(ofp);
    170 	if (rv == 0) {			/* no lines in file, forget the file */
    171 		unlink(x);
    172 		retval = 0;
    173 		for ( i = 0; i <= extrknt; i++ )
    174 			if(!extrfnd[i]) {
    175 				retval = 1;
    176 				fprintf( stderr, "fsplit: %s not found\n",
    177 					extrnames[i]);
    178 			}
    179 		exit( retval );
    180 	}
    181 	if (nflag) {			/* rename the file */
    182 		if(saveit(name)) {
    183 			if (stat(name, &sbuf) < 0 ) {
    184 				link(x, name);
    185 				unlink(x);
    186 				printf("%s\n", name);
    187 				continue;
    188 			} else if (strcmp(name, x) == 0) {
    189 				printf("%s\n", x);
    190 				continue;
    191 			}
    192 			printf("%s already exists, put in %s\n", name, x);
    193 			continue;
    194 		} else
    195 			unlink(x);
    196 			continue;
    197 	}
    198 	if(!extr)
    199 		printf("%s\n", x);
    200 	else
    201 		unlink(x);
    202     }
    203 }
    204 
    205 void
    206 badparms()
    207 {
    208 	fprintf(stderr, "fsplit: usage:  fsplit [-e efile] ... [file] \n");
    209 	exit(1);
    210 }
    211 
    212 int
    213 saveit(name)
    214 	char *name;
    215 {
    216 	int i;
    217 	char	fname[50],
    218 		*fptr = fname;
    219 
    220 	if(!extr) return(1);
    221 	while(*name) *fptr++ = *name++;
    222 	*--fptr = 0;
    223 	*--fptr = 0;
    224 	for ( i=0 ; i<=extrknt; i++ )
    225 		if( strcmp(fname, extrnames[i]) == 0 ) {
    226 			extrfnd[i] = TRUE;
    227 			return(1);
    228 		}
    229 	return(0);
    230 }
    231 
    232 void
    233 get_name(name, letters)
    234 	char *name;
    235 	int letters;
    236 {
    237 	char *ptr;
    238 
    239 	while (stat(name, &sbuf) >= 0) {
    240 		for (ptr = name + letters + 2; ptr >= name + letters; ptr--) {
    241 			(*ptr)++;
    242 			if (*ptr <= '9')
    243 				break;
    244 			*ptr = '0';
    245 		}
    246 		if(ptr < name + letters) {
    247 			fprintf( stderr, "fsplit: ran out of file names\n");
    248 			exit(1);
    249 		}
    250 	}
    251 }
    252 
    253 int
    254 getline()
    255 {
    256 	char *ptr;
    257 
    258 	for (ptr = buf; ptr < &buf[BSZ]; ) {
    259 		*ptr = getc(ifp);
    260 		if (feof(ifp))
    261 			return (-1);
    262 		if (*ptr++ == '\n') {
    263 			*ptr = 0;
    264 			return (1);
    265 		}
    266 	}
    267 	while (getc(ifp) != '\n' && feof(ifp) == 0) ;
    268 	fprintf(stderr, "line truncated to %d characters\n", BSZ);
    269 	return (1);
    270 }
    271 
    272 /* return 1 for 'end' alone on card (up to col. 72),  0 otherwise */
    273 int
    274 lend()
    275 {
    276 	char *p;
    277 
    278 	if ((p = skiplab(buf)) == 0)
    279 		return (0);
    280 	trim(p);
    281 	if (*p != 'e' && *p != 'E') return(0);
    282 	p++;
    283 	trim(p);
    284 	if (*p != 'n' && *p != 'N') return(0);
    285 	p++;
    286 	trim(p);
    287 	if (*p != 'd' && *p != 'D') return(0);
    288 	p++;
    289 	trim(p);
    290 	if (p - buf >= 72 || *p == '\n')
    291 		return (1);
    292 	return (0);
    293 }
    294 
    295 /*		check for keywords for subprograms
    296 		return 0 if comment card, 1 if found
    297 		name and put in arg string. invent name for unnamed
    298 		block datas and main programs.		*/
    299 
    300 int
    301 lname(s)
    302 	char *s;
    303 {
    304 #	define LINESIZE 80
    305 	char *ptr, *p;
    306 	char	line[LINESIZE], *iptr = line;
    307 
    308 	/* first check for comment cards */
    309 	if(buf[0] == 'c' || buf[0] == 'C' || buf[0] == '*') return(0);
    310 	ptr = buf;
    311 	while (*ptr == ' ' || *ptr == '\t') ptr++;
    312 	if(*ptr == '\n') return(0);
    313 
    314 
    315 	ptr = skiplab(buf);
    316 	if (ptr == 0)
    317 		return (0);
    318 
    319 
    320 	/*  copy to buffer and converting to lower case */
    321 	p = ptr;
    322 	while (*p && p <= &buf[71] ) {
    323 	   *iptr = isupper((unsigned char)*p) ? tolower(*p) : *p;
    324 	   iptr++;
    325 	   p++;
    326 	}
    327 	*iptr = '\n';
    328 
    329 	if ((ptr = look(line, "subroutine")) != 0 ||
    330 	    (ptr = look(line, "function")) != 0 ||
    331 	    (ptr = functs(line)) != 0) {
    332 		if(scan_name(s, ptr)) return(1);
    333 		strcpy( s, x);
    334 	} else if((ptr = look(line, "program")) != 0) {
    335 		if(scan_name(s, ptr)) return(1);
    336 		get_name( mainp, 4);
    337 		strcpy( s, mainp);
    338 	} else if((ptr = look(line, "blockdata")) != 0) {
    339 		if(scan_name(s, ptr)) return(1);
    340 		get_name( blkp, 6);
    341 		strcpy( s, blkp);
    342 	} else if((ptr = functs(line)) != 0) {
    343 		if(scan_name(s, ptr)) return(1);
    344 		strcpy( s, x);
    345 	} else {
    346 		get_name( mainp, 4);
    347 		strcpy( s, mainp);
    348 	}
    349 	return(1);
    350 }
    351 
    352 int
    353 scan_name(s, ptr)
    354 	char *s, *ptr;
    355 {
    356 	char *sptr;
    357 
    358 	/* scan off the name */
    359 	trim(ptr);
    360 	sptr = s;
    361 	while (*ptr != '(' && *ptr != '\n') {
    362 		if (*ptr != ' ' && *ptr != '\t')
    363 			*sptr++ = *ptr;
    364 		ptr++;
    365 	}
    366 
    367 	if (sptr == s) return(0);
    368 
    369 	*sptr++ = '.';
    370 	*sptr++ = 'f';
    371 	*sptr++ = 0;
    372 	return(1);
    373 }
    374 
    375 char *
    376 functs(p)
    377 	char *p;
    378 {
    379         char *ptr;
    380 
    381 /*      look for typed functions such as: real*8 function,
    382                 character*16 function, character*(*) function  */
    383 
    384         if((ptr = look(p,"character")) != 0 ||
    385            (ptr = look(p,"logical")) != 0 ||
    386            (ptr = look(p,"real")) != 0 ||
    387            (ptr = look(p,"integer")) != 0 ||
    388            (ptr = look(p,"doubleprecision")) != 0 ||
    389            (ptr = look(p,"complex")) != 0 ||
    390            (ptr = look(p,"doublecomplex")) != 0 ) {
    391                 while ( *ptr == ' ' || *ptr == '\t' || *ptr == '*'
    392 			|| (*ptr >= '0' && *ptr <= '9')
    393 			|| *ptr == '(' || *ptr == ')') ptr++;
    394 		ptr = look(ptr,"function");
    395 		return(ptr);
    396 	}
    397         else
    398                 return(0);
    399 }
    400 
    401 /* 	if first 6 col. blank, return ptr to col. 7,
    402 	if blanks and then tab, return ptr after tab,
    403 	else return 0 (labelled statement, comment or continuation */
    404 
    405 char *
    406 skiplab(p)
    407 	char *p;
    408 {
    409 	char *ptr;
    410 
    411 	for (ptr = p; ptr < &p[6]; ptr++) {
    412 		if (*ptr == ' ')
    413 			continue;
    414 		if (*ptr == '\t') {
    415 			ptr++;
    416 			break;
    417 		}
    418 		return (0);
    419 	}
    420 	return (ptr);
    421 }
    422 
    423 /* 	return 0 if m doesn't match initial part of s;
    424 	otherwise return ptr to next char after m in s */
    425 
    426 char *
    427 look(s, m)
    428 	char *s, *m;
    429 {
    430 	char *sp, *mp;
    431 
    432 	sp = s; mp = m;
    433 	while (*mp) {
    434 		trim(sp);
    435 		if (*sp++ != *mp++)
    436 			return (0);
    437 	}
    438 	return (sp);
    439 }
    440