mirror of
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584b694b75
string.h, which already was included.
245 lines
4.8 KiB
C
245 lines
4.8 KiB
C
/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ozan Yigit at York University.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/6/93";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/types.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "mdef.h"
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#include "stdd.h"
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#include "extern.h"
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#include "pathnames.h"
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/*
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* find the index of second str in the first str.
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*/
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int
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indx(s1, s2)
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char *s1;
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char *s2;
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{
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register char *t;
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register char *p;
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register char *m;
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for (p = s1; *p; p++) {
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for (t = p, m = s2; *m && *m == *t; m++, t++);
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if (!*m)
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return (p - s1);
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}
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return (-1);
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}
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/*
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* putback - push character back onto input
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*/
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void
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putback(c)
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int c;
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{
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if (c == EOF)
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c = 0;
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else if (c == 0)
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return;
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if (bp < endpbb)
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*bp++ = c;
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else
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errx(1, "too many characters pushed back");
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}
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/*
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* pbstr - push string back onto input
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* putback is replicated to improve
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* performance.
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*/
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void
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pbstr(s)
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register unsigned char *s;
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{
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register unsigned char *es;
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register unsigned char *zp;
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es = s;
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zp = bp;
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while (*es)
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es++;
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es--;
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while (es >= s)
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if (zp < endpbb)
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*zp++ = *es--;
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if ((bp = zp) == endpbb)
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errx(1, "too many characters pushed back");
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}
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/*
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* pbnum - convert number to string, push back on input.
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*/
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void
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pbnum(n)
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int n;
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{
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register int num;
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num = (n < 0) ? -n : n;
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do {
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putback(num % 10 + '0');
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}
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while ((num /= 10) > 0);
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if (n < 0)
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putback('-');
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}
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/*
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* chrsave - put single char on string space
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*/
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void
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chrsave(c)
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char c;
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{
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if (ep < endest)
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*ep++ = c;
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else
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errx(1, "string space overflow");
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}
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/*
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* read in a diversion file, and dispose it.
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*/
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void
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getdiv(n)
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int n;
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{
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register int c;
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register FILE *dfil;
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if (active == outfile[n])
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errx(1, "undivert: diversion still active");
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(void) fclose(outfile[n]);
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outfile[n] = NULL;
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m4temp[UNIQUE] = n + '0';
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if ((dfil = fopen(m4temp, "r")) == NULL)
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errx(1, "%s: cannot undivert", m4temp);
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else
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while ((c = getc(dfil)) != EOF)
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putc(c, active);
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(void) fclose(dfil);
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#ifdef vms
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if (remove(m4temp))
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#else
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if (unlink(m4temp) == -1)
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#endif
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errx(1, "%s: cannot unlink", m4temp);
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}
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void
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onintr(signo)
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int signo;
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{
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errx(1, "interrupted");
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}
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/*
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* killdiv - get rid of the diversion files
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*/
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void
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killdiv()
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{
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register int n;
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for (n = 0; n < MAXOUT; n++)
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if (outfile[n] != NULL) {
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(void) fclose(outfile[n]);
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m4temp[UNIQUE] = n + '0';
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#ifdef vms
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(void) remove(m4temp);
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#else
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(void) unlink(m4temp);
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#endif
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}
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}
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char *
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xalloc(n)
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unsigned long n;
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{
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register char *p = malloc(n);
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if (p == NULL)
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err(1, "malloc");
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return p;
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}
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char *
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xstrdup(s)
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const char *s;
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{
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register char *p = strdup(s);
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if (p == NULL)
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err(1, "strdup");
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return p;
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}
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char *
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basename(s)
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register char *s;
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{
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register char *p;
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if ((p = strrchr(s, '/')) == NULL)
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return s;
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return ++p;
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}
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void
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usage()
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{
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fprintf(stderr, "usage: m4 [-Dname[=val]] [-Uname]\n");
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exit(1);
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}
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