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fsplit.c revision 1.10 
      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. Neither the name of the University nor the names of its contributors
     17  *    may be used to endorse or promote products derived from this software
     18  *    without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 #ifndef lint
     35 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\
     36 	The Regents of the University of California.  All rights reserved.\n");
     37 #endif /* not lint */
     38 
     39 #ifndef lint
     40 #if 0
     41 static char sccsid[] = "from: @(#)fsplit.c	8.1 (Berkeley) 6/6/93";
     42 #else
     43 __RCSID("$NetBSD: fsplit.c,v 1.10 2003/08/07 11:13:50 agc Exp $");
     44 #endif
     45 #endif /* not lint */
     46 
     47 #include <sys/types.h>
     48 #include <sys/stat.h>
     49 
     50 #include <ctype.h>
     51 #include <stdio.h>
     52 #include <stdlib.h>
     53 #include <string.h>
     54 #include <unistd.h>
     55 
     56 /*
     57  *	usage:		fsplit [-e efile] ... [file]
     58  *
     59  *	split single file containing source for several fortran programs
     60  *		and/or subprograms into files each containing one
     61  *		subprogram unit.
     62  *	each separate file will be named using the corresponding subroutine,
     63  *		function, block data or program name if one is found; otherwise
     64  *		the name will be of the form mainNNN.f or blkdtaNNN.f .
     65  *		If a file of that name exists, it is saved in a name of the
     66  *		form zzz000.f .
     67  *	If -e option is used, then only those subprograms named in the -e
     68  *		option are split off; e.g.:
     69  *			fsplit -esub1 -e sub2 prog.f
     70  *		isolates sub1 and sub2 in sub1.f and sub2.f.  The space
     71  *		after -e is optional.
     72  *
     73  *	Modified Feb., 1983 by Jerry Berkman, Computing Services, U.C. Berkeley.
     74  *		- added comments
     75  *		- more function types: double complex, character*(*), etc.
     76  *		- fixed minor bugs
     77  *		- instead of all unnamed going into zNNN.f, put mains in
     78  *		  mainNNN.f, block datas in blkdtaNNN.f, dups in zzzNNN.f .
     79  */
     80 
     81 #define BSZ 512
     82 char buf[BSZ];
     83 FILE *ifp;
     84 char 	x[]="zzz000.f",
     85 	mainp[]="main000.f",
     86 	blkp[]="blkdta000.f";
     87 
     88 void	badparms __P((void));
     89 char   *functs __P((char *));
     90 int	getline __P((void));
     91 void	get_name __P((char *, int));
     92 int	main __P((int, char **));
     93 int	lend __P((void));
     94 int	lname __P((char *, size_t));
     95 char   *look __P((char *, char *));
     96 int	saveit __P((char *));
     97 int	scan_name __P((char *, char *));
     98 char   *skiplab __P((char *));
     99 
    100 #define TRUE 1
    101 #define FALSE 0
    102 int	extr = FALSE,
    103 	extrknt = -1,
    104 	extrfnd[100];
    105 char	extrbuf[1000],
    106 	*extrnames[100];
    107 struct stat sbuf;
    108 
    109 #define trim(p)	while (*p == ' ' || *p == '\t') p++
    110 
    111 int
    112 main(argc, argv)
    113 	int argc;
    114 	char **argv;
    115 {
    116 	FILE *ofp;	/* output file */
    117 	int rv;		/* 1 if got card in output file, 0 otherwise */
    118 	char *ptr;
    119 	int nflag;	/* 1 if got name of subprog., 0 otherwise */
    120 	int retval, i;
    121 	char name[20], *extrptr = extrbuf;
    122 
    123 	/*  scan -e options */
    124 	while ( argc > 1  && argv[1][0] == '-' && argv[1][1] == 'e') {
    125 		extr = TRUE;
    126 		ptr = argv[1] + 2;
    127 		if(!*ptr) {
    128 			argc--;
    129 			argv++;
    130 			if(argc <= 1) badparms();
    131 			ptr = argv[1];
    132 		}
    133 		extrknt = extrknt + 1;
    134 		extrnames[extrknt] = extrptr;
    135 		extrfnd[extrknt] = FALSE;
    136 		while(*ptr) *extrptr++ = *ptr++;
    137 		*extrptr++ = 0;
    138 		argc--;
    139 		argv++;
    140 	}
    141 
    142 	if (argc > 2)
    143 		badparms();
    144 	else if (argc == 2) {
    145 		if ((ifp = fopen(argv[1], "r")) == NULL) {
    146 			fprintf(stderr, "fsplit: cannot open %s\n", argv[1]);
    147 			exit(1);
    148 		}
    149 	}
    150 	else
    151 		ifp = stdin;
    152     for(;;) {
    153 	/* look for a temp file that doesn't correspond to an existing file */
    154 	get_name(x, 3);
    155 	ofp = fopen(x, "w");
    156 	nflag = 0;
    157 	rv = 0;
    158 	while (getline() > 0) {
    159 		rv = 1;
    160 		fprintf(ofp, "%s", buf);
    161 		if (lend())		/* look for an 'end' statement */
    162 			break;
    163 		if (nflag == 0)		/* if no name yet, try and find one */
    164 			nflag = lname(name, sizeof(name));
    165 	}
    166 	fclose(ofp);
    167 	if (rv == 0) {			/* no lines in file, forget the file */
    168 		unlink(x);
    169 		retval = 0;
    170 		for ( i = 0; i <= extrknt; i++ )
    171 			if(!extrfnd[i]) {
    172 				retval = 1;
    173 				fprintf( stderr, "fsplit: %s not found\n",
    174 					extrnames[i]);
    175 			}
    176 		exit( retval );
    177 	}
    178 	if (nflag) {			/* rename the file */
    179 		if(saveit(name)) {
    180 			if (stat(name, &sbuf) < 0 ) {
    181 				link(x, name);
    182 				unlink(x);
    183 				printf("%s\n", name);
    184 				continue;
    185 			} else if (strcmp(name, x) == 0) {
    186 				printf("%s\n", x);
    187 				continue;
    188 			}
    189 			printf("%s already exists, put in %s\n", name, x);
    190 			continue;
    191 		} else
    192 			unlink(x);
    193 			continue;
    194 	}
    195 	if(!extr)
    196 		printf("%s\n", x);
    197 	else
    198 		unlink(x);
    199     }
    200 }
    201 
    202 void
    203 badparms()
    204 {
    205 	fprintf(stderr, "fsplit: usage:  fsplit [-e efile] ... [file] \n");
    206 	exit(1);
    207 }
    208 
    209 int
    210 saveit(name)
    211 	char *name;
    212 {
    213 	int i;
    214 	char	fname[50],
    215 		*fptr = fname;
    216 
    217 	if(!extr) return(1);
    218 	while(*name) *fptr++ = *name++;
    219 	*--fptr = 0;
    220 	*--fptr = 0;
    221 	for ( i=0 ; i<=extrknt; i++ )
    222 		if( strcmp(fname, extrnames[i]) == 0 ) {
    223 			extrfnd[i] = TRUE;
    224 			return(1);
    225 		}
    226 	return(0);
    227 }
    228 
    229 void
    230 get_name(name, letters)
    231 	char *name;
    232 	int letters;
    233 {
    234 	char *ptr;
    235 
    236 	while (stat(name, &sbuf) >= 0) {
    237 		for (ptr = name + letters + 2; ptr >= name + letters; ptr--) {
    238 			(*ptr)++;
    239 			if (*ptr <= '9')
    240 				break;
    241 			*ptr = '0';
    242 		}
    243 		if(ptr < name + letters) {
    244 			fprintf( stderr, "fsplit: ran out of file names\n");
    245 			exit(1);
    246 		}
    247 	}
    248 }
    249 
    250 int
    251 getline()
    252 {
    253 	char *ptr;
    254 
    255 	for (ptr = buf; ptr < &buf[BSZ]; ) {
    256 		*ptr = getc(ifp);
    257 		if (feof(ifp))
    258 			return (-1);
    259 		if (*ptr++ == '\n') {
    260 			*ptr = 0;
    261 			return (1);
    262 		}
    263 	}
    264 	while (getc(ifp) != '\n' && feof(ifp) == 0) ;
    265 	fprintf(stderr, "line truncated to %d characters\n", BSZ);
    266 	return (1);
    267 }
    268 
    269 /* return 1 for 'end' alone on card (up to col. 72),  0 otherwise */
    270 int
    271 lend()
    272 {
    273 	char *p;
    274 
    275 	if ((p = skiplab(buf)) == 0)
    276 		return (0);
    277 	trim(p);
    278 	if (*p != 'e' && *p != 'E') return(0);
    279 	p++;
    280 	trim(p);
    281 	if (*p != 'n' && *p != 'N') return(0);
    282 	p++;
    283 	trim(p);
    284 	if (*p != 'd' && *p != 'D') return(0);
    285 	p++;
    286 	trim(p);
    287 	if (p - buf >= 72 || *p == '\n')
    288 		return (1);
    289 	return (0);
    290 }
    291 
    292 /*		check for keywords for subprograms
    293 		return 0 if comment card, 1 if found
    294 		name and put in arg string. invent name for unnamed
    295 		block datas and main programs.		*/
    296 
    297 int
    298 lname(s, l)
    299 	char *s;
    300 	size_t l;
    301 {
    302 #	define LINESIZE 80
    303 	char *ptr, *p;
    304 	char	line[LINESIZE], *iptr = line;
    305 
    306 	/* first check for comment cards */
    307 	if(buf[0] == 'c' || buf[0] == 'C' || buf[0] == '*') return(0);
    308 	ptr = buf;
    309 	while (*ptr == ' ' || *ptr == '\t') ptr++;
    310 	if(*ptr == '\n') return(0);
    311 
    312 
    313 	ptr = skiplab(buf);
    314 	if (ptr == 0)
    315 		return (0);
    316 
    317 
    318 	/*  copy to buffer and converting to lower case */
    319 	p = ptr;
    320 	while (*p && p <= &buf[71] ) {
    321 	   *iptr = isupper((unsigned char)*p) ? tolower(*p) : *p;
    322 	   iptr++;
    323 	   p++;
    324 	}
    325 	*iptr = '\n';
    326 
    327 	if ((ptr = look(line, "subroutine")) != 0 ||
    328 	    (ptr = look(line, "function")) != 0 ||
    329 	    (ptr = functs(line)) != 0) {
    330 		if(scan_name(s, ptr)) return(1);
    331 		strlcpy(s, x, l);
    332 	} else if((ptr = look(line, "program")) != 0) {
    333 		if(scan_name(s, ptr)) return(1);
    334 		get_name(mainp, 4);
    335 		strlcpy(s, mainp, l);
    336 	} else if((ptr = look(line, "blockdata")) != 0) {
    337 		if(scan_name(s, ptr)) return(1);
    338 		get_name( blkp, 6);
    339 		strlcpy(s, blkp, l);
    340 	} else if((ptr = functs(line)) != 0) {
    341 		if(scan_name(s, ptr)) return(1);
    342 		strlcpy(s, x, l);
    343 	} else {
    344 		get_name(mainp, 4);
    345 		strlcpy(s, mainp, l);
    346 	}
    347 	return(1);
    348 }
    349 
    350 int
    351 scan_name(s, ptr)
    352 	char *s, *ptr;
    353 {
    354 	char *sptr;
    355 
    356 	/* scan off the name */
    357 	trim(ptr);
    358 	sptr = s;
    359 	while (*ptr != '(' && *ptr != '\n') {
    360 		if (*ptr != ' ' && *ptr != '\t')
    361 			*sptr++ = *ptr;
    362 		ptr++;
    363 	}
    364 
    365 	if (sptr == s) return(0);
    366 
    367 	*sptr++ = '.';
    368 	*sptr++ = 'f';
    369 	*sptr++ = 0;
    370 	return(1);
    371 }
    372 
    373 char *
    374 functs(p)
    375 	char *p;
    376 {
    377         char *ptr;
    378 
    379 /*      look for typed functions such as: real*8 function,
    380                 character*16 function, character*(*) function  */
    381 
    382         if((ptr = look(p,"character")) != 0 ||
    383            (ptr = look(p,"logical")) != 0 ||
    384            (ptr = look(p,"real")) != 0 ||
    385            (ptr = look(p,"integer")) != 0 ||
    386            (ptr = look(p,"doubleprecision")) != 0 ||
    387            (ptr = look(p,"complex")) != 0 ||
    388            (ptr = look(p,"doublecomplex")) != 0 ) {
    389                 while ( *ptr == ' ' || *ptr == '\t' || *ptr == '*'
    390 			|| (*ptr >= '0' && *ptr <= '9')
    391 			|| *ptr == '(' || *ptr == ')') ptr++;
    392 		ptr = look(ptr,"function");
    393 		return(ptr);
    394 	}
    395         else
    396                 return(0);
    397 }
    398 
    399 /* 	if first 6 col. blank, return ptr to col. 7,
    400 	if blanks and then tab, return ptr after tab,
    401 	else return 0 (labelled statement, comment or continuation */
    402 
    403 char *
    404 skiplab(p)
    405 	char *p;
    406 {
    407 	char *ptr;
    408 
    409 	for (ptr = p; ptr < &p[6]; ptr++) {
    410 		if (*ptr == ' ')
    411 			continue;
    412 		if (*ptr == '\t') {
    413 			ptr++;
    414 			break;
    415 		}
    416 		return (0);
    417 	}
    418 	return (ptr);
    419 }
    420 
    421 /* 	return 0 if m doesn't match initial part of s;
    422 	otherwise return ptr to next char after m in s */
    423 
    424 char *
    425 look(s, m)
    426 	char *s, *m;
    427 {
    428 	char *sp, *mp;
    429 
    430 	sp = s; mp = m;
    431 	while (*mp) {
    432 		trim(sp);
    433 		if (*sp++ != *mp++)
    434 			return (0);
    435 	}
    436 	return (sp);
    437 }
    438