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authorJuli Mallett <jmallett@FreeBSD.org>2001-11-16 23:50:40 +0000
committerJuli Mallett <jmallett@FreeBSD.org>2001-11-16 23:50:40 +0000
commitd1bbdb91ade866e9ff4ab65e0012fffb0fcd7913 (patch)
treee12f3f39645ed590937ce91e1067edf195d7031b
parentadd74ed3707059ef44c700e24f116ea0bf43a315 (diff)
downloadsrc-d1bbdb91ade866e9ff4ab65e0012fffb0fcd7913.tar.gz
src-d1bbdb91ade866e9ff4ab65e0012fffb0fcd7913.zip
Import OpenBSD m4 as of today.
Notes
Notes: svn path=/vendor/OpenBSD/dist/; revision=86471
-rw-r--r--usr.bin/m4/misc.c381
1 files changed, 381 insertions, 0 deletions
diff --git a/usr.bin/m4/misc.c b/usr.bin/m4/misc.c
new file mode 100644
index 000000000000..e4bfa7ef1a8b
--- /dev/null
+++ b/usr.bin/m4/misc.c
@@ -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);
+}