Import OpenBSD m4 as of today.
This commit is contained in:
Juli Mallett
parent
add74ed370
commit
d1bbdb91ad
381
usr.bin/m4/misc.c
Normal file
381
usr.bin/m4/misc.c
Normal file
@ -0,0 +1,381 @@
|
||||
/* $OpenBSD: misc.c,v 1.26 2001/11/16 23:50:40 deraadt Exp $ */
|
||||
/* $NetBSD: misc.c,v 1.6 1995/09/28 05:37:41 tls Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1989, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to Berkeley by
|
||||
* Ozan Yigit at York University.
|
||||
*
|
||||
* 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. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. 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.
|
||||
*/
|
||||
|
||||
#ifndef lint
|
||||
#if 0
|
||||
static char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/6/93";
|
||||
#else
|
||||
static char rcsid[] = "$OpenBSD: misc.c,v 1.26 2001/11/16 23:50:40 deraadt Exp $";
|
||||
#endif
|
||||
#endif /* not lint */
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <errno.h>
|
||||
#include <unistd.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <stddef.h>
|
||||
#include <string.h>
|
||||
#include <err.h>
|
||||
#include "mdef.h"
|
||||
#include "stdd.h"
|
||||
#include "extern.h"
|
||||
#include "pathnames.h"
|
||||
|
||||
|
||||
char *ep; /* first free char in strspace */
|
||||
static char *strspace; /* string space for evaluation */
|
||||
char *endest; /* end of string space */
|
||||
static size_t strsize = STRSPMAX;
|
||||
static size_t bufsize = BUFSIZE;
|
||||
|
||||
char *buf; /* push-back buffer */
|
||||
char *bufbase; /* the base for current ilevel */
|
||||
char *bbase[MAXINP]; /* the base for each ilevel */
|
||||
char *bp; /* first available character */
|
||||
char *endpbb; /* end of push-back buffer */
|
||||
|
||||
|
||||
/*
|
||||
* find the index of second str in the first str.
|
||||
*/
|
||||
ptrdiff_t
|
||||
indx(s1, s2)
|
||||
const char *s1;
|
||||
const char *s2;
|
||||
{
|
||||
char *t;
|
||||
|
||||
t = strstr(s1, s2);
|
||||
if (t == NULL)
|
||||
return (-1);
|
||||
else
|
||||
return (t - s1);
|
||||
}
|
||||
/*
|
||||
* putback - push character back onto input
|
||||
*/
|
||||
void
|
||||
putback(c)
|
||||
int c;
|
||||
{
|
||||
if (c == EOF)
|
||||
return;
|
||||
if (bp >= endpbb)
|
||||
enlarge_bufspace();
|
||||
*bp++ = c;
|
||||
}
|
||||
|
||||
/*
|
||||
* pbstr - push string back onto input
|
||||
* putback is replicated to improve
|
||||
* performance.
|
||||
*/
|
||||
void
|
||||
pbstr(s)
|
||||
const char *s;
|
||||
{
|
||||
size_t n;
|
||||
|
||||
n = strlen(s);
|
||||
while (endpbb - bp <= n)
|
||||
enlarge_bufspace();
|
||||
while (n > 0)
|
||||
*bp++ = s[--n];
|
||||
}
|
||||
|
||||
/*
|
||||
* pbnum - convert number to string, push back on input.
|
||||
*/
|
||||
void
|
||||
pbnum(n)
|
||||
int n;
|
||||
{
|
||||
int num;
|
||||
|
||||
num = (n < 0) ? -n : n;
|
||||
do {
|
||||
putback(num % 10 + '0');
|
||||
}
|
||||
while ((num /= 10) > 0);
|
||||
|
||||
if (n < 0)
|
||||
putback('-');
|
||||
}
|
||||
|
||||
/*
|
||||
* pbunsigned - convert unsigned long to string, push back on input.
|
||||
*/
|
||||
void
|
||||
pbunsigned(n)
|
||||
unsigned long n;
|
||||
{
|
||||
do {
|
||||
putback(n % 10 + '0');
|
||||
}
|
||||
while ((n /= 10) > 0);
|
||||
}
|
||||
|
||||
void
|
||||
initspaces()
|
||||
{
|
||||
int i;
|
||||
|
||||
strspace = xalloc(strsize+1);
|
||||
ep = strspace;
|
||||
endest = strspace+strsize;
|
||||
buf = (char *)xalloc(bufsize);
|
||||
bufbase = buf;
|
||||
bp = buf;
|
||||
endpbb = buf + bufsize;
|
||||
for (i = 0; i < MAXINP; i++)
|
||||
bbase[i] = buf;
|
||||
}
|
||||
|
||||
void
|
||||
enlarge_strspace()
|
||||
{
|
||||
char *newstrspace;
|
||||
int i;
|
||||
|
||||
strsize *= 2;
|
||||
newstrspace = malloc(strsize + 1);
|
||||
if (!newstrspace)
|
||||
errx(1, "string space overflow");
|
||||
memcpy(newstrspace, strspace, strsize/2);
|
||||
for (i = 0; i <= sp; i++)
|
||||
if (sstack[i])
|
||||
mstack[i].sstr = (mstack[i].sstr - strspace)
|
||||
+ newstrspace;
|
||||
ep = (ep-strspace) + newstrspace;
|
||||
free(strspace);
|
||||
strspace = newstrspace;
|
||||
endest = strspace + strsize;
|
||||
}
|
||||
|
||||
void
|
||||
enlarge_bufspace()
|
||||
{
|
||||
char *newbuf;
|
||||
int i;
|
||||
|
||||
bufsize *= 2;
|
||||
newbuf = realloc(buf, bufsize);
|
||||
if (!newbuf)
|
||||
errx(1, "too many characters pushed back");
|
||||
for (i = 0; i < MAXINP; i++)
|
||||
bbase[i] = (bbase[i]-buf)+newbuf;
|
||||
bp = (bp-buf)+newbuf;
|
||||
bufbase = (bufbase-buf)+newbuf;
|
||||
buf = newbuf;
|
||||
endpbb = buf+bufsize;
|
||||
}
|
||||
|
||||
/*
|
||||
* chrsave - put single char on string space
|
||||
*/
|
||||
void
|
||||
chrsave(c)
|
||||
int c;
|
||||
{
|
||||
if (ep >= endest)
|
||||
enlarge_strspace();
|
||||
*ep++ = c;
|
||||
}
|
||||
|
||||
/*
|
||||
* read in a diversion file, and dispose it.
|
||||
*/
|
||||
void
|
||||
getdiv(n)
|
||||
int n;
|
||||
{
|
||||
int c;
|
||||
|
||||
if (active == outfile[n])
|
||||
errx(1, "undivert: diversion still active");
|
||||
rewind(outfile[n]);
|
||||
while ((c = getc(outfile[n])) != EOF)
|
||||
putc(c, active);
|
||||
(void) fclose(outfile[n]);
|
||||
outfile[n] = NULL;
|
||||
}
|
||||
|
||||
void
|
||||
onintr(signo)
|
||||
int signo;
|
||||
{
|
||||
#define intrmessage "m4: interrupted.\n"
|
||||
write(STDERR_FILENO, intrmessage, sizeof(intrmessage)-1);
|
||||
_exit(1);
|
||||
}
|
||||
|
||||
/*
|
||||
* killdiv - get rid of the diversion files
|
||||
*/
|
||||
void
|
||||
killdiv()
|
||||
{
|
||||
int n;
|
||||
|
||||
for (n = 0; n < maxout; n++)
|
||||
if (outfile[n] != NULL) {
|
||||
(void) fclose(outfile[n]);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* resizedivs: allocate more diversion files */
|
||||
void
|
||||
resizedivs(n)
|
||||
int n;
|
||||
{
|
||||
int i;
|
||||
|
||||
outfile = (FILE **)realloc(outfile, sizeof(FILE *) * n);
|
||||
if (outfile == NULL)
|
||||
errx(1, "too many diverts %d", n);
|
||||
for (i = maxout; i < n; i++)
|
||||
outfile[i] = NULL;
|
||||
maxout = n;
|
||||
}
|
||||
|
||||
void *
|
||||
xalloc(n)
|
||||
size_t n;
|
||||
{
|
||||
char *p = malloc(n);
|
||||
|
||||
if (p == NULL)
|
||||
err(1, "malloc");
|
||||
return p;
|
||||
}
|
||||
|
||||
char *
|
||||
xstrdup(s)
|
||||
const char *s;
|
||||
{
|
||||
char *p = strdup(s);
|
||||
if (p == NULL)
|
||||
err(1, "strdup");
|
||||
return p;
|
||||
}
|
||||
|
||||
void
|
||||
usage()
|
||||
{
|
||||
fprintf(stderr, "usage: m4 [-Dname[=val]] [-Uname] [-I dirname...]\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
int
|
||||
obtain_char(f)
|
||||
struct input_file *f;
|
||||
{
|
||||
if (f->c == EOF)
|
||||
return EOF;
|
||||
else if (f->c == '\n')
|
||||
f->lineno++;
|
||||
|
||||
f->c = fgetc(f->file);
|
||||
return f->c;
|
||||
}
|
||||
|
||||
void
|
||||
set_input(f, real, name)
|
||||
struct input_file *f;
|
||||
FILE *real;
|
||||
const char *name;
|
||||
{
|
||||
f->file = real;
|
||||
f->lineno = 1;
|
||||
f->c = 0;
|
||||
f->name = xstrdup(name);
|
||||
}
|
||||
|
||||
void
|
||||
release_input(f)
|
||||
struct input_file *f;
|
||||
{
|
||||
if (f->file != stdin)
|
||||
fclose(f->file);
|
||||
f->c = EOF;
|
||||
/*
|
||||
* XXX can't free filename, as there might still be
|
||||
* error information pointing to it.
|
||||
*/
|
||||
}
|
||||
|
||||
void
|
||||
doprintlineno(f)
|
||||
struct input_file *f;
|
||||
{
|
||||
pbunsigned(f->lineno);
|
||||
}
|
||||
|
||||
void
|
||||
doprintfilename(f)
|
||||
struct input_file *f;
|
||||
{
|
||||
pbstr(rquote);
|
||||
pbstr(f->name);
|
||||
pbstr(lquote);
|
||||
}
|
||||
|
||||
/*
|
||||
* buffer_mark/dump_buffer: allows one to save a mark in a buffer,
|
||||
* and later dump everything that was added since then to a file.
|
||||
*/
|
||||
size_t
|
||||
buffer_mark()
|
||||
{
|
||||
return bp - buf;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
dump_buffer(f, m)
|
||||
FILE *f;
|
||||
size_t m;
|
||||
{
|
||||
char *s;
|
||||
|
||||
for (s = bp; s-buf > m;)
|
||||
fputc(*--s, f);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user