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getNAME.c revision 1.10 
      1 /*	$NetBSD: getNAME.c,v 1.10 1997/12/22 20:02:33 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997, Christos Zoulas
      5  * Copyright (c) 1980, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      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  *	This product includes software developed by Christos Zoulas.
     21  * 4. Neither the name of the University nor the names of its contributors
     22  *    may be used to endorse or promote products derived from this software
     23  *    without specific prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  */
     37 
     38 #include <sys/cdefs.h>
     39 #ifndef lint
     40 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
     41 	The Regents of the University of California.  All rights reserved.\n");
     42 #if 0
     43 static char sccsid[] = "@(#)getNAME.c	8.1 (Berkeley) 6/30/93";
     44 #else
     45 __RCSID("$NetBSD: getNAME.c,v 1.10 1997/12/22 20:02:33 christos Exp $");
     46 #endif
     47 #endif /* not lint */
     48 
     49 /*
     50  * Get name sections from manual pages.
     51  *	-t	for building toc
     52  *	-i	for building intro entries
     53  *	-w	for querying type of manual source
     54  *	other	apropos database
     55  */
     56 #include <stdio.h>
     57 #include <stdlib.h>
     58 #include <string.h>
     59 #include <err.h>
     60 
     61 static int tocrc;
     62 static int intro;
     63 static int typeflag;
     64 
     65 #define SLOP 10	/* strlen(" () - ") < 10 */
     66 
     67 static char *linebuf = NULL;
     68 static size_t maxlen = 0;
     69 
     70 
     71 static void doname __P((char *));
     72 static void dorefname __P((char *));
     73 static void getfrom __P((char *));
     74 static void oldman __P((char *, char *));
     75 static void newman __P((char *, char *));
     76 static void remcomma __P((char *, size_t *));
     77 static void remquote __P((char *, size_t *));
     78 static void fixxref __P((char *, size_t *));
     79 static void split __P((char *, char *));
     80 static void usage __P((void));
     81 
     82 int main __P((int, char *[]));
     83 
     84 int
     85 main(argc, argv)
     86 	int argc;
     87 	char *argv[];
     88 {
     89 	int ch;
     90 
     91 	while ((ch = getopt(argc, argv, "itw")) != -1)
     92 		switch (ch) {
     93 		case 'i':
     94 			intro = 1;
     95 			break;
     96 		case 't':
     97 			tocrc = 1;
     98 			break;
     99 		case 'w':
    100 			typeflag = 1;
    101 			break;
    102 		case '?':
    103 		default:
    104 			usage();
    105 		}
    106 	argc -= optind;
    107 	argv += optind;
    108 
    109 	if (!*argv)
    110 		usage();
    111 
    112 	for (; *argv; ++argv)
    113 		getfrom(*argv);
    114 	exit(0);
    115 }
    116 
    117 void
    118 getfrom(pathname)
    119 	char *pathname;
    120 {
    121 	char *name;
    122 	char *line;
    123 	size_t len;
    124 
    125 	if (freopen(pathname, "r", stdin) == 0) {
    126 		warn("Cannot open `%s'", pathname);
    127 		return;
    128 	}
    129 	if ((name = strrchr(pathname, '/')) != NULL)
    130 		name++;
    131 	else
    132 		name = pathname;
    133 	for (;;) {
    134 		if ((line = fgetln(stdin, &len)) == NULL) {
    135 			if (typeflag)
    136 				printf("%-60s\tUNKNOWN\n", pathname);
    137 			return;
    138 		}
    139 		if (line[0] != '.')
    140 			continue;
    141 		if ((line[1] == 'T' && line[2] == 'H') ||
    142 		    (line[1] == 't' && line[2] == 'h'))
    143 			return oldman(pathname, name);
    144 		if (line[1] == 'D' && line[2] == 't')
    145 			return newman(pathname, name);
    146 	}
    147 }
    148 
    149 static void
    150 oldman(pathname, name)
    151 	char *pathname, *name;
    152 {
    153 	char *line, *ext, *s;
    154 	size_t len, i, extlen;
    155 	size_t curlen = 0;
    156 
    157 	if (typeflag) {
    158 		printf("%-60s\tOLD\n", pathname);
    159 		return;
    160 	}
    161 	for (;;) {
    162 		if ((line = fgetln(stdin, &len)) == NULL)
    163 			return;
    164 		if (line[0] != '.')
    165 			continue;
    166 		if (line[1] == 'S' && line[2] == 'H')
    167 			break;
    168 		if (line[1] == 's' && line[2] == 'h')
    169 			break;
    170 	}
    171 
    172 	if (tocrc)
    173 		doname(name);
    174 
    175 	for (i = 0;; i++) {
    176 		if ((line = fgetln(stdin, &len)) == NULL)
    177 			break;
    178 		if (line[0] == '.') {
    179 			if (line[1] == 'S' && line[2] == 'H')
    180 				break;
    181 			if (line[1] == 's' && line[2] == 'h')
    182 				break;
    183 		}
    184 		if (line[len - 1] == '\n') {
    185 			line[len - 1] = '\0';
    186 			len--;
    187 		}
    188 		if ((ext = strrchr(name, '.')) != NULL) {
    189 			ext++;
    190 			extlen = strlen(ext);
    191 		}
    192 		else
    193 			extlen = 0;
    194 
    195 		if (maxlen + extlen < curlen + len + SLOP) {
    196 			maxlen = 2 * (curlen + len) + SLOP + extlen;
    197 			if ((linebuf = realloc(linebuf, maxlen)) == NULL)
    198 				err(1, "%s", "");
    199 		}
    200 		if (i != 0)
    201 			linebuf[curlen++] = ' ';
    202 		(void)memcpy(&linebuf[curlen], line, len);
    203 		curlen += len;
    204 		linebuf[curlen] = '\0';
    205 
    206 		/* change the \- into (N) - */
    207 		if ((s = strstr(linebuf, "\\-")) != NULL) {
    208 			(void)memmove(s + extlen + 3, s + 1,
    209 			    curlen - (s + 1 - linebuf));
    210 			curlen--;
    211 			if (extlen) {
    212 				*s++ = '(';
    213 				while (*ext)
    214 					*s++ = *ext++;
    215 				*s++ = ')';
    216 				*s++ = ' ';
    217 				curlen += extlen + 3;
    218 			}
    219 			linebuf[curlen] = '\0';
    220 		}
    221 	}
    222 
    223 	if (intro)
    224 		split(linebuf, name);
    225 	else
    226 		printf("%s\n", linebuf);
    227 	return;
    228 }
    229 
    230 static void
    231 newman(pathname, name)
    232 	char *pathname, *name;
    233 {
    234 	char *line, *ext;
    235 	size_t len, i, extlen;
    236 	size_t curlen = 0;
    237 
    238 	if (typeflag) {
    239 		printf("%-60s\tNEW\n", pathname);
    240 		return;
    241 	}
    242 	for (;;) {
    243 		if ((line = fgetln(stdin, &len)) == NULL)
    244 			return;
    245 		if (line[0] != '.')
    246 			continue;
    247 		if (line[1] == 'S' && line[2] == 'h')
    248 			break;
    249 	}
    250 
    251 	if (tocrc)
    252 		doname(name);
    253 
    254 	for (i = 0;; i++) {
    255 		if ((line = fgetln(stdin, &len)) == NULL)
    256 			break;
    257 
    258 		if (line[0] == '.') {
    259 			if (line[1] == 'S' && line[2] == 'h')
    260 				break;
    261 		}
    262 
    263 		if (line[len - 1] == '\n') {
    264 			line[len - 1] = '\0';
    265 			len--;
    266 		}
    267 
    268 		if ((ext = strrchr(name, '.')) != NULL) {
    269 			ext++;
    270 			extlen = strlen(ext);
    271 		}
    272 		else
    273 			extlen = 0;
    274 
    275 		if (maxlen + extlen < curlen + len + SLOP) {
    276 			maxlen = 2 * (curlen + len) + SLOP + extlen;
    277 			if ((linebuf = realloc(linebuf, maxlen)) == NULL)
    278 				err(1, "%s", "");
    279 		}
    280 
    281 		if (i != 0)
    282 			linebuf[curlen++] = ' ';
    283 
    284 		remcomma(line, &len);
    285 
    286 		if (line[0] != '.') {
    287 			(void)memcpy(&linebuf[curlen], line, len);
    288 			curlen += len;
    289 		}
    290 		else {
    291 			remquote(line, &len);
    292 			fixxref(line, &len);
    293 
    294 			/*
    295 			 * Put section and dash between names and description.
    296 			 */
    297 			if (line[1] == 'N' && line[2] == 'd') {
    298 				if (extlen) {
    299 					linebuf[curlen++] = '(';
    300 					while (*ext)
    301 						linebuf[curlen++] = *ext++;
    302 					linebuf[curlen++] = ')';
    303 					linebuf[curlen++] = ' ';
    304 				}
    305 				linebuf[curlen++] = '-';
    306 				linebuf[curlen++] = ' ';
    307 			}
    308 			/*
    309 			 * Skip over macro names.
    310 			 */
    311 			if (len <= 4)
    312 				continue;
    313 			(void)memcpy(&linebuf[curlen], &line[4], len - 4);
    314 			curlen += len - 4;
    315 		}
    316 	}
    317 	linebuf[curlen] = '\0';
    318 	if (intro)
    319 		split(linebuf, name);
    320 	else
    321 		printf("%s\n", linebuf);
    322 }
    323 
    324 /*
    325  * convert " ," -> " "
    326  */
    327 static void
    328 remcomma(line, len)
    329 	char *line;
    330 	size_t *len;
    331 {
    332 	char *pline = line, *loc;
    333 	size_t plen = *len;
    334 
    335 	while ((loc = memchr(pline, ' ', plen)) != NULL) {
    336 		plen -= loc - pline + 1;
    337 		pline = loc;
    338 		if (loc[1] == ',') {
    339 			(void)memcpy(loc, &loc[1], plen);
    340 			(*len)--;
    341 		}
    342 		else
    343 			pline++;
    344 	}
    345 }
    346 
    347 /*
    348  * Get rid of quotes in macros.
    349  */
    350 static
    351 void remquote(line, len)
    352 	char *line;
    353 	size_t *len;
    354 {
    355 	char *loc;
    356 	char *pline = &line[4];
    357 	size_t plen = *len - 4;
    358 
    359 	if (*len < 4)
    360 		return;
    361 
    362 	while ((loc = memchr(pline, '"', plen)) != NULL) {
    363 		plen -= loc - pline + 1;
    364 		pline = loc;
    365 		(void)memcpy(loc, &loc[1], plen);
    366 		(*len)--;
    367 	}
    368 }
    369 
    370 /*
    371  * Handle cross references
    372  */
    373 static void
    374 fixxref(line, len)
    375 	char *line;
    376 	size_t *len;
    377 {
    378 	char *loc;
    379 	char *pline = &line[4];
    380 	size_t plen = *len - 4;
    381 
    382 	if (*len < 4)
    383 		return;
    384 
    385 	if (line[1] == 'X' && line[2] == 'r') {
    386 		if ((loc = memchr(pline, ' ', plen)) != NULL) {
    387 			*loc++ = '(';
    388 			loc++;
    389 			*loc++ = ')';
    390 			*len = loc - line;
    391 		}
    392 	}
    393 }
    394 
    395 static void
    396 doname(name)
    397 	char *name;
    398 {
    399 	char *dp = name, *ep;
    400 
    401 again:
    402 	while (*dp && *dp != '.')
    403 		putchar(*dp++);
    404 	if (*dp)
    405 		for (ep = dp+1; *ep; ep++)
    406 			if (*ep == '.') {
    407 				putchar(*dp++);
    408 				goto again;
    409 			}
    410 	putchar('(');
    411 	if (*dp)
    412 		dp++;
    413 	while (*dp)
    414 		putchar (*dp++);
    415 	putchar(')');
    416 	putchar(' ');
    417 }
    418 
    419 static void
    420 split(line, name)
    421 	char *line, *name;
    422 {
    423 	char *cp, *dp;
    424 	char *sp, *sep;
    425 
    426 	cp = strchr(line, '-');
    427 	if (cp == 0)
    428 		return;
    429 	sp = cp + 1;
    430 	for (--cp; *cp == ' ' || *cp == '\t' || *cp == '\\'; cp--)
    431 		;
    432 	*++cp = '\0';
    433 	while (*sp && (*sp == ' ' || *sp == '\t'))
    434 		sp++;
    435 	for (sep = "", dp = line; dp && *dp; dp = cp, sep = "\n") {
    436 		cp = strchr(dp, ',');
    437 		if (cp) {
    438 			char *tp;
    439 
    440 			for (tp = cp - 1; *tp == ' ' || *tp == '\t'; tp--)
    441 				;
    442 			*++tp = '\0';
    443 			for (++cp; *cp == ' ' || *cp == '\t'; cp++)
    444 				;
    445 		}
    446 		printf("%s%s\t", sep, dp);
    447 		dorefname(name);
    448 		printf("\t%s", sp);
    449 	}
    450 }
    451 
    452 static void
    453 dorefname(name)
    454 	char *name;
    455 {
    456 	char *dp = name, *ep;
    457 
    458 again:
    459 	while (*dp && *dp != '.')
    460 		putchar(*dp++);
    461 	if (*dp)
    462 		for (ep = dp+1; *ep; ep++)
    463 			if (*ep == '.') {
    464 				putchar(*dp++);
    465 				goto again;
    466 			}
    467 	putchar('.');
    468 	if (*dp)
    469 		dp++;
    470 	while (*dp)
    471 		putchar (*dp++);
    472 }
    473 
    474 static void
    475 usage()
    476 {
    477 	extern char *__progname;
    478 	(void)fprintf(stderr, "Usage: %s [-itw] file ...\n", __progname);
    479 	exit(1);
    480 }
    481