NetBSD/libexec/getNAME/getNAME.c

547 lines
11 KiB
C

/* $NetBSD: getNAME.c,v 1.27 2011/08/29 20:41:06 joerg Exp $ */
/*-
* Copyright (c) 1997, Christos Zoulas. All rights reserved.
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1980, 1993\
The Regents of the University of California. All rights reserved.");
#if 0
static char sccsid[] = "@(#)getNAME.c 8.1 (Berkeley) 6/30/93";
#else
__RCSID("$NetBSD: getNAME.c,v 1.27 2011/08/29 20:41:06 joerg Exp $");
#endif
#endif /* not lint */
/*
* Get name sections from manual pages.
* -t for building toc
* -i for building intro entries
* -w for querying type of manual source
* -v verbose
* other apropos database
*/
#include <err.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static int tocrc;
static int intro;
static int typeflag;
static int verbose;
#define SLOP 10 /* strlen(" () - ") < 10 */
static char *linebuf = NULL;
static size_t maxlen = 0;
static void doname(char *);
static void dorefname(char *);
static void getfrom(char *);
static void oldman(char *, char *);
static void newman(char *, char *);
static void remcomma(char *, size_t *);
static void remquote(char *, size_t *);
static void fixxref(char *, size_t *);
static void split(char *, char *);
__dead static void usage(void);
int main(int, char *[]);
/* The .SH NAMEs that are allowed. */
static const char *names[] = { "name", "namn", 0 };
int
main(int argc, char *argv[])
{
int ch;
while ((ch = getopt(argc, argv, "itvw")) != -1)
switch (ch) {
case 'i':
intro = 1;
break;
case 't':
tocrc = 1;
break;
case 'v':
verbose = 1;
break;
case 'w':
typeflag = 1;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (!*argv)
usage();
for (; *argv; ++argv)
getfrom(*argv);
return 0;
}
static void
getfrom(char *pathname)
{
char *name;
char *line;
size_t len;
if (freopen(pathname, "r", stdin) == 0) {
warn("Cannot open `%s'", pathname);
return;
}
if ((name = strrchr(pathname, '/')) != NULL)
name++;
else
name = pathname;
for (;;) {
if ((line = fgetln(stdin, &len)) == NULL) {
if (typeflag)
(void)printf("%-60s\tUNKNOWN\n", pathname);
if (verbose)
warnx("missing .TH or .Dt section in `%s'",
pathname);
return;
}
if (len < 3)
continue;
if (line[0] != '.')
continue;
if ((line[1] == 'T' && line[2] == 'H') ||
(line[1] == 't' && line[2] == 'h')) {
oldman(pathname, name);
return;
}
if (line[1] == 'D' && line[2] == 't') {
newman(pathname, name);
return;
}
}
}
static void
oldman(char *pathname, char *name)
{
char *line, *ext, *s, *newlinebuf;
size_t len, i, extlen;
size_t curlen = 0;
size_t newmaxlen;
size_t ocurlen = -1;
if (typeflag) {
(void)printf("%-60s\tOLD\n", pathname);
return;
}
for (;;) {
if ((line = fgetln(stdin, &len)) == NULL) {
if (verbose)
warnx("missing .SH section in `%s'", pathname);
return;
}
if (len < 4)
continue;
if (line[0] != '.')
continue;
if (line[1] == 'S' && line[2] == 'H')
break;
if (line[1] == 's' && line[2] == 'h')
break;
}
for (s = &line[3]; s < &line[len] &&
(isspace((unsigned char) *s) || *s == '"' || *s == '\''); s++)
continue;
if (s == &line[len]) {
warnx("missing argument to .SH in `%s'", pathname);
return;
}
for (i = 0; names[i]; i++)
if (strncasecmp(s, names[i], strlen(names[i])) == 0)
break;
if (names[i] == NULL) {
warnx("first .SH section is not \"NAME\" in `%s'", pathname);
return;
}
again:
if (tocrc)
doname(name);
for (i = 0;; i++) {
if ((line = fgetln(stdin, &len)) == NULL)
break;
if (line[0] == '.') {
if (line[1] == '\\' && line[2] == '"')
continue; /* [nt]roff comment */
if (line[1] == 'S' && line[2] == 'H')
break;
if (line[1] == 's' && line[2] == 'h')
break;
if (line[1] == 'P' && line[2] == 'P')
break;
if (line[1] == 'b' && line[2] == 'r') {
if (intro)
split(linebuf, name);
else
(void)printf("%s\n", linebuf);
curlen = ocurlen;
goto again;
}
}
if (line[len - 1] == '\n') {
line[len - 1] = '\0';
len--;
}
if ((ext = strrchr(name, '.')) != NULL) {
ext++;
extlen = strlen(ext);
}
else
extlen = 0;
if (maxlen + extlen < curlen + len + SLOP) {
newmaxlen = 2 * (curlen + len) + SLOP + extlen;
if ((newlinebuf = realloc(linebuf, newmaxlen)) == NULL)
err(1, NULL);
linebuf = newlinebuf;
maxlen = newmaxlen;
}
if (i != 0)
linebuf[curlen++] = ' ';
(void)memcpy(&linebuf[curlen], line, len);
ocurlen = curlen;
curlen += len;
linebuf[curlen] = '\0';
if(!tocrc && !intro) {
/* change the \- into (N) - */
if ((s = strstr(linebuf, "\\-")) != NULL) {
(void)memmove(s + extlen + 3, s + 1,
curlen - (s + 1 - linebuf));
curlen--;
if (extlen) {
*s++ = '(';
while (*ext)
*s++ = *ext++;
*s++ = ')';
*s++ = ' ';
curlen += extlen + 3;
}
linebuf[curlen] = '\0';
}
}
}
if (intro)
split(linebuf, name);
else
(void)printf("%s\n", linebuf);
return;
}
static void
newman(char *pathname, char *name)
{
char *line, *ext, *s, *newlinebuf;
size_t len, i, extlen;
size_t curlen = 0;
size_t newmaxlen;
if (typeflag) {
(void)printf("%-60s\tNEW\n", pathname);
return;
}
for (;;) {
if ((line = fgetln(stdin, &len)) == NULL) {
if (verbose)
warnx("missing .Sh section in `%s'", pathname);
return;
}
if (line[0] != '.')
continue;
if (line[1] == 'S' && line[2] == 'h')
break;
}
for (s = &line[3]; s < &line[len] && isspace((unsigned char) *s); s++)
continue;
if (s == &line[len]) {
warnx("missing argument to .Sh in `%s'", pathname);
return;
}
for (i = 0; names[i]; i++)
if (strncasecmp(s, names[i], strlen(names[i])) == 0)
break;
if (names[i] == NULL) {
warnx("first .SH section is not \"NAME\" in `%s'", pathname);
return;
}
if (tocrc)
doname(name);
for (i = 0;; i++) {
if ((line = fgetln(stdin, &len)) == NULL)
break;
if (line[0] == '.') {
if (line[1] == '\\' && line[2] == '"')
continue; /* [nt]roff comment */
if (line[1] == 'S' && line[2] == 'h')
break;
}
if (line[len - 1] == '\n') {
line[len - 1] = '\0';
len--;
}
if ((ext = strrchr(name, '.')) != NULL) {
ext++;
extlen = strlen(ext);
}
else
extlen = 0;
if (maxlen + extlen < curlen + len + SLOP) {
newmaxlen = 2 * (curlen + len) + SLOP + extlen;
if ((newlinebuf = realloc(linebuf, newmaxlen)) == NULL)
err(1, NULL);
linebuf = newlinebuf;
maxlen = newmaxlen;
}
if (i != 0)
linebuf[curlen++] = ' ';
remcomma(line, &len);
if (line[0] != '.') {
(void)memcpy(&linebuf[curlen], line, len);
curlen += len;
}
else {
remquote(line, &len);
fixxref(line, &len);
/*
* Put section and dash between names and description.
*/
if (line[1] == 'N' && line[2] == 'd') {
if(!tocrc && !intro) {
if (extlen) {
linebuf[curlen++] = '(';
while (*ext)
linebuf[curlen++] = *ext++;
linebuf[curlen++] = ')';
linebuf[curlen++] = ' ';
}
}
linebuf[curlen++] = '-';
linebuf[curlen++] = ' ';
}
/*
* Skip over macro names.
*/
if (len <= 4)
continue;
(void)memcpy(&linebuf[curlen], &line[4], len - 4);
curlen += len - 4;
}
}
linebuf[curlen] = '\0';
if (intro)
split(linebuf, name);
else
(void)printf("%s\n", linebuf);
}
/*
* convert " ," -> " "
*/
static void
remcomma(char *line, size_t *len)
{
char *pline = line, *loc;
size_t plen = *len;
while ((loc = memchr(pline, ' ', plen)) != NULL) {
plen -= loc - pline + 1;
pline = loc;
if (loc[1] == ',') {
(void)memcpy(loc, &loc[1], plen);
(*len)--;
}
else
pline++;
}
}
/*
* Get rid of quotes in macros.
*/
static void
remquote(char *line, size_t *len)
{
char *loc;
char *pline = &line[4];
size_t plen = *len - 4;
if (*len < 4)
return;
while ((loc = memchr(pline, '"', plen)) != NULL) {
plen -= loc - pline + 1;
pline = loc;
(void)memcpy(loc, &loc[1], plen);
(*len)--;
}
}
/*
* Handle cross references
*/
static void
fixxref(char *line, size_t *len)
{
char *loc;
char *pline = &line[4];
size_t plen = *len - 4;
if (*len < 4)
return;
if (line[1] == 'X' && line[2] == 'r') {
if ((loc = memchr(pline, ' ', plen)) != NULL) {
*loc++ = '(';
loc++;
*loc++ = ')';
*len = loc - line;
}
}
}
static void
doname(char *name)
{
char *dp = name, *ep;
again:
while (*dp && *dp != '.')
(void)putchar(*dp++);
if (*dp)
for (ep = dp+1; *ep; ep++)
if (*ep == '.') {
(void)putchar(*dp++);
goto again;
}
(void)putchar('(');
if (*dp)
dp++;
while (*dp)
(void)putchar(*dp++);
(void)putchar(')');
(void)putchar(' ');
}
static void
split(char *line, char *name)
{
char *cp, *dp;
char *sp;
const char *sep;
cp = strchr(line, '-');
if (cp == 0)
return;
sp = cp + 1;
for (--cp; *cp == ' ' || *cp == '\t' || *cp == '\\'; cp--)
;
*++cp = '\0';
while (*sp && (*sp == ' ' || *sp == '\t'))
sp++;
for (sep = "", dp = line; dp && *dp; dp = cp, sep = "\n") {
cp = strchr(dp, ',');
if (cp) {
char *tp;
for (tp = cp - 1; *tp == ' ' || *tp == '\t'; tp--)
;
*++tp = '\0';
for (++cp; *cp == ' ' || *cp == '\t'; cp++)
;
}
(void)printf("%s%s\t", sep, dp);
dorefname(name);
(void)printf("\t- %s", sp);
}
(void)putchar('\n');
}
static void
dorefname(char *name)
{
char *dp = name, *ep;
again:
while (*dp && *dp != '.')
(void)putchar(*dp++);
if (*dp)
for (ep = dp+1; *ep; ep++)
if (*ep == '.') {
(void)putchar(*dp++);
goto again;
}
(void)putchar('.');
if (*dp)
dp++;
while (*dp)
(void)putchar(*dp++);
}
static void
usage(void)
{
(void)fprintf(stderr, "Usage: %s [-itw] file ...\n", getprogname());
exit(1);
}