summaryrefslogtreecommitdiff
path: root/usr.bin/m4/main.c
diff options
context:
space:
mode:
Diffstat (limited to 'usr.bin/m4/main.c')
-rw-r--r--usr.bin/m4/main.c811
1 files changed, 811 insertions, 0 deletions
diff --git a/usr.bin/m4/main.c b/usr.bin/m4/main.c
new file mode 100644
index 0000000..cba65ad
--- /dev/null
+++ b/usr.bin/m4/main.c
@@ -0,0 +1,811 @@
+/* $OpenBSD: main.c,v 1.77 2009/10/14 17:19:47 sthen Exp $ */
+/* $NetBSD: main.c,v 1.46 2016/01/23 14:24:43 christos 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. 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.
+ */
+
+/*
+ * main.c
+ * Facility: m4 macro processor
+ * by: oz
+ */
+#if HAVE_NBTOOL_CONFIG_H
+#include "nbtool_config.h"
+#endif
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: main.c,v 1.46 2016/01/23 14:24:43 christos Exp $");
+#include <assert.h>
+#include <signal.h>
+#include <getopt.h>
+#include <err.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <ohash.h>
+#include "mdef.h"
+#include "stdd.h"
+#include "extern.h"
+#include "pathnames.h"
+
+ndptr hashtab[HASHSIZE]; /* hash table for macros etc. */
+stae *mstack; /* stack of m4 machine */
+char *sstack; /* shadow stack, for string space extension */
+static size_t STACKMAX; /* current maximum size of stack */
+int sp; /* current m4 stack pointer */
+int fp; /* m4 call frame pointer */
+struct input_file infile[MAXINP];/* input file stack (0=stdin) */
+FILE **outfile; /* diversion array(0=bitbucket)*/
+int maxout;
+FILE *active; /* active output file pointer */
+int ilevel = 0; /* input file stack pointer */
+int oindex = 0; /* diversion index.. */
+const char *null = ""; /* as it says.. just a null.. */
+char **m4wraps = NULL; /* m4wraps array. */
+int maxwraps = 0; /* size of m4wraps array */
+int wrapindex = 0; /* current offset in m4wraps */
+char lquote[MAXCCHARS+1] = {LQUOTE}; /* left quote character (`) */
+char rquote[MAXCCHARS+1] = {RQUOTE}; /* right quote character (') */
+char scommt[MAXCCHARS+1] = {SCOMMT}; /* start character for comment */
+char ecommt[MAXCCHARS+1] = {ECOMMT}; /* end character for comment */
+int synch_lines = 0; /* line synchronisation for C preprocessor */
+int prefix_builtins = 0; /* -P option to prefix builtin keywords */
+int fatal_warnings = 0; /* -E option to exit on warnings */
+int quiet = 0; /* -Q option to silence warnings */
+int nesting_limit = -1; /* -L for nesting limit */
+const char *freeze = NULL; /* -F to freeze state */
+const char *reload = NULL; /* -R to reload state */
+#ifndef REAL_FREEZE
+FILE *freezef = NULL;
+int thawing = 0;
+#endif
+
+struct keyblk {
+ const char *knam; /* keyword name */
+ int ktyp; /* keyword type */
+};
+
+struct keyblk keywrds[] = { /* m4 keywords to be installed */
+ { "include", INCLTYPE },
+ { "sinclude", SINCTYPE },
+ { "define", DEFITYPE },
+ { "defn", DEFNTYPE },
+ { "divert", DIVRTYPE | NOARGS },
+ { "expr", EXPRTYPE },
+ { "eval", EXPRTYPE },
+ { "substr", SUBSTYPE },
+ { "ifelse", IFELTYPE },
+ { "ifdef", IFDFTYPE },
+ { "len", LENGTYPE },
+ { "incr", INCRTYPE },
+ { "decr", DECRTYPE },
+ { "dnl", DNLNTYPE | NOARGS },
+ { "changequote", CHNQTYPE | NOARGS },
+ { "changecom", CHNCTYPE | NOARGS },
+ { "index", INDXTYPE },
+#ifdef EXTENDED
+ { "paste", PASTTYPE },
+ { "spaste", SPASTYPE },
+ /* Newer extensions, needed to handle gnu-m4 scripts */
+ { "indir", INDIRTYPE},
+ { "builtin", BUILTINTYPE},
+ { "patsubst", PATSTYPE},
+ { "regexp", REGEXPTYPE},
+ { "esyscmd", ESYSCMDTYPE},
+ { "__file__", FILENAMETYPE | NOARGS},
+ { "__line__", LINETYPE | NOARGS},
+#endif
+ { "popdef", POPDTYPE },
+ { "pushdef", PUSDTYPE },
+ { "dumpdef", DUMPTYPE | NOARGS },
+ { "shift", SHIFTYPE | NOARGS },
+ { "translit", TRNLTYPE },
+ { "undefine", UNDFTYPE },
+ { "undivert", UNDVTYPE | NOARGS },
+ { "divnum", DIVNTYPE | NOARGS },
+ { "maketemp", MKTMTYPE },
+ { "errprint", ERRPTYPE | NOARGS },
+ { "m4wrap", M4WRTYPE | NOARGS },
+ { "m4exit", EXITTYPE | NOARGS },
+ { "syscmd", SYSCTYPE },
+ { "sysval", SYSVTYPE | NOARGS },
+ { "traceon", TRACEONTYPE | NOARGS },
+ { "traceoff", TRACEOFFTYPE | NOARGS },
+
+#if defined(unix) || defined(__unix__)
+ { "unix", SELFTYPE | NOARGS },
+#else
+#ifdef vms
+ { "vms", SELFTYPE | NOARGS },
+#endif
+#endif
+};
+
+#define MAXKEYS (sizeof(keywrds)/sizeof(struct keyblk))
+
+#define MAXRECORD 50
+static struct position {
+ char *name;
+ unsigned long line;
+} quotes[MAXRECORD], paren[MAXRECORD];
+
+static void record(struct position *, int);
+static void dump_stack(struct position *, int);
+
+static void macro(void);
+static void initkwds(void);
+static ndptr inspect(int, char *);
+static int do_look_ahead(int, const char *);
+static void reallyoutputstr(const char *);
+static void reallyputchar(int);
+
+static void enlarge_stack(void);
+static void help(void);
+
+static void
+usage(FILE *f)
+{
+ fprintf(f, "Usage: %s [-EGgiPQsv] [-Dname[=value]] [-d flags] "
+ "[-I dirname] [-o filename] [-L limit]\n"
+ "\t[-t macro] [-Uname] [file ...]\n", getprogname());
+}
+
+__dead static void
+onintr(int signo)
+{
+ char intrmessage[] = "m4: interrupted.\n";
+ write(STDERR_FILENO, intrmessage, sizeof(intrmessage)-1);
+ _exit(1);
+}
+
+#define OPT_HELP 1
+
+struct option longopts[] = {
+ { "debug", optional_argument, 0, 'd' },
+ { "define", required_argument, 0, 'D' },
+ { "error-output", required_argument, 0, 'e' },
+ { "fatal-warnings", no_argument, 0, 'E' },
+ { "freeze-state", required_argument, 0, 'F' },
+ { "gnu", no_argument, 0, 'g' },
+ { "help", no_argument, 0, OPT_HELP },
+ { "include", required_argument, 0, 'I' },
+ { "interactive", no_argument, 0, 'i' },
+ { "nesting-limit", required_argument, 0, 'L' },
+ { "prefix-builtins", no_argument, 0, 'P' },
+ { "quiet", no_argument, 0, 'Q' },
+ { "reload-state", required_argument, 0, 'R' },
+ { "silent", no_argument, 0, 'Q' },
+ { "synclines", no_argument, 0, 's' },
+ { "trace", required_argument, 0, 't' },
+ { "traditional", no_argument, 0, 'G' },
+ { "undefine", required_argument, 0, 'U' },
+ { "version", no_argument, 0, 'v' },
+#ifdef notyet
+ { "arglength", required_argument, 0, 'l' },
+ { "debugfile", optional_argument, 0, OPT_DEBUGFILE },
+ { "hashsize", required_argument, 0, 'H' },
+ { "warn-macro-sequence",optional_argument, 0, OPT_WARN_SEQUENCE },
+#endif
+ { 0, 0, 0, 0 },
+};
+
+int
+main(int argc, char *argv[])
+{
+ int c;
+ int n;
+ char *p;
+
+ setprogname(argv[0]);
+
+ if (signal(SIGINT, SIG_IGN) != SIG_IGN)
+ signal(SIGINT, onintr);
+
+ init_macros();
+ initspaces();
+ STACKMAX = INITSTACKMAX;
+
+ mstack = (stae *)xalloc(sizeof(stae) * STACKMAX, NULL);
+ sstack = (char *)xalloc(STACKMAX, NULL);
+
+ maxout = 0;
+ outfile = NULL;
+ resizedivs(MAXOUT);
+
+ while ((c = getopt_long(argc, argv, "D:d:e:EF:GgI:iL:o:PR:Qst:U:v",
+ longopts, NULL)) != -1)
+ switch(c) {
+ case 'D': /* define something..*/
+ for (p = optarg; *p; p++)
+ if (*p == '=')
+ break;
+ if (*p)
+ *p++ = EOS;
+ dodefine(optarg, p);
+ break;
+ case 'd':
+ set_trace_flags(optarg);
+ break;
+ case 'E':
+ fatal_warnings++;
+ break;
+ case 'e':
+ if (freopen(optarg, "w+", stderr) == NULL)
+ err(EXIT_FAILURE, "Can't redirect errors to `%s'",
+ optarg);
+ break;
+ case 'F':
+ freeze = optarg;
+#ifndef REAL_FREEZE
+ if ((freezef = fopen(freeze, "w")) == NULL)
+ err(EXIT_FAILURE, "Can't open `%s'", freeze);
+#endif
+ break;
+ case 'I':
+ addtoincludepath(optarg);
+ break;
+ case 'i':
+ setvbuf(stdout, NULL, _IONBF, 0);
+ signal(SIGINT, SIG_IGN);
+ break;
+ case 'G':
+ mimic_gnu = 0;
+ break;
+ case 'g':
+ mimic_gnu = 1;
+ break;
+ case 'L':
+ nesting_limit = atoi(optarg);
+ break;
+ case 'o':
+ trace_file(optarg);
+ break;
+ case 'P':
+ prefix_builtins = 1;
+ break;
+ case 'Q':
+ quiet++;
+ break;
+ case 'R':
+ reload = optarg;
+ break;
+ case 's':
+ synch_lines = 1;
+ break;
+ case 't':
+ mark_traced(optarg, 1);
+ break;
+ case 'U': /* undefine... */
+ macro_popdef(optarg);
+ break;
+ case 'v':
+ fprintf(stderr, "%s version %d\n", getprogname(),
+ VERSION);
+ return EXIT_SUCCESS;
+ case OPT_HELP:
+ help();
+ return EXIT_SUCCESS;
+ case '?':
+ default:
+ usage(stderr);
+ return EXIT_FAILURE;
+ }
+
+#ifdef REDIRECT
+ /*
+ * This is meant only for debugging; it makes all output
+ * go to a known file, even if the command line options
+ * send it elsewhere. It should not be turned of in production code.
+ */
+ if (freopen("/tmp/m4", "w+", stderr) == NULL)
+ err(EXIT_FAILURE, "Can't redirect errors to `%s'",
+ "/tmp/m4");
+#endif
+ argc -= optind;
+ argv += optind;
+
+
+ initkwds();
+ if (mimic_gnu)
+ setup_builtin("format", FORMATTYPE);
+
+ active = stdout; /* default active output */
+ bbase[0] = bufbase;
+
+ if (reload) {
+#ifdef REAL_FREEZE
+ thaw_state(reload);
+#else
+ if (fopen_trypath(infile, reload) == NULL)
+ err(1, "Can't open `%s'", reload);
+ sp = -1;
+ fp = 0;
+ thawing = 1;
+ macro();
+ thawing = 0;
+ release_input(infile);
+#endif
+ }
+
+ if (!argc) {
+ sp = -1; /* stack pointer initialized */
+ fp = 0; /* frame pointer initialized */
+ set_input(infile+0, stdin, "stdin");
+ /* default input (naturally) */
+ macro();
+ } else
+ for (; argc--; ++argv) {
+ p = *argv;
+ if (p[0] == '-' && p[1] == EOS)
+ set_input(infile, stdin, "stdin");
+ else if (fopen_trypath(infile, p) == NULL)
+ err(1, "%s", p);
+ sp = -1;
+ fp = 0;
+ macro();
+ release_input(infile);
+ }
+
+ if (wrapindex) {
+ int i;
+
+ ilevel = 0; /* in case m4wrap includes.. */
+ bufbase = bp = buf; /* use the entire buffer */
+ if (mimic_gnu) {
+ while (wrapindex != 0) {
+ for (i = 0; i < wrapindex; i++)
+ pbstr(m4wraps[i]);
+ wrapindex =0;
+ macro();
+ }
+ } else {
+ for (i = 0; i < wrapindex; i++) {
+ pbstr(m4wraps[i]);
+ macro();
+ }
+ }
+ }
+
+ if (active != stdout)
+ active = stdout; /* reset output just in case */
+ for (n = 1; n < maxout; n++) /* default wrap-up: undivert */
+ if (outfile[n] != NULL)
+ getdiv(n);
+ /* remove bitbucket if used */
+ if (outfile[0] != NULL) {
+ (void) fclose(outfile[0]);
+ }
+
+#ifdef REAL_FREEZE
+ if (freeze)
+ freeze_state(freeze);
+#else
+ if (freezef)
+ fclose(freezef);
+#endif
+
+ return 0;
+}
+
+/*
+ * Look ahead for `token'.
+ * (on input `t == token[0]')
+ * Used for comment and quoting delimiters.
+ * Returns 1 if `token' present; copied to output.
+ * 0 if `token' not found; all characters pushed back
+ */
+static int
+do_look_ahead(int t, const char *token)
+{
+ int i;
+
+ assert((unsigned char)t == (unsigned char)token[0]);
+
+ for (i = 1; *++token; i++) {
+ t = gpbc();
+ if (t == EOF || (unsigned char)t != (unsigned char)*token) {
+ pushback(t);
+ while (--i)
+ pushback(*--token);
+ return 0;
+ }
+ }
+ return 1;
+}
+
+#define LOOK_AHEAD(t, token) (t != EOF && \
+ (unsigned char)(t)==(unsigned char)(token)[0] && \
+ do_look_ahead(t,token))
+
+/*
+ * macro - the work horse..
+ */
+static void
+macro(void)
+{
+ char token[MAXTOK+1];
+ int t, l;
+ ndptr p;
+ int nlpar;
+
+ cycle {
+ t = gpbc();
+
+ if (LOOK_AHEAD(t,lquote)) { /* strip quotes */
+ nlpar = 0;
+ record(quotes, nlpar++);
+ /*
+ * Opening quote: scan forward until matching
+ * closing quote has been found.
+ */
+ do {
+
+ l = gpbc();
+ if (LOOK_AHEAD(l,rquote)) {
+ if (--nlpar > 0)
+ outputstr(rquote);
+ } else if (LOOK_AHEAD(l,lquote)) {
+ record(quotes, nlpar++);
+ outputstr(lquote);
+ } else if (l == EOF) {
+ if (!quiet) {
+ if (nlpar == 1)
+ warnx("unclosed quote:");
+ else
+ warnx(
+ "%d unclosed quotes:",
+ nlpar);
+ dump_stack(quotes, nlpar);
+ }
+ exit(EXIT_FAILURE);
+ } else {
+ if (nlpar > 0) {
+ if (sp < 0)
+ reallyputchar(l);
+ else
+ CHRSAVE(l);
+ }
+ }
+ }
+ while (nlpar != 0);
+ } else if (sp < 0 && LOOK_AHEAD(t, scommt)) {
+ reallyoutputstr(scommt);
+
+ for(;;) {
+ t = gpbc();
+ if (LOOK_AHEAD(t, ecommt)) {
+ reallyoutputstr(ecommt);
+ break;
+ }
+ if (t == EOF)
+ break;
+ reallyputchar(t);
+ }
+ } else if (t == '_' || isalpha(t)) {
+ p = inspect(t, token);
+ if (p != NULL)
+ pushback(l = gpbc());
+ if (p == NULL || (l != LPAREN &&
+ (macro_getdef(p)->type & NEEDARGS) != 0))
+ outputstr(token);
+ else {
+ /*
+ * real thing.. First build a call frame:
+ */
+ pushf(fp); /* previous call frm */
+ pushf(macro_getdef(p)->type); /* type of the call */
+ pushf(is_traced(p));
+ pushf(0); /* parenthesis level */
+ fp = sp; /* new frame pointer */
+ /*
+ * now push the string arguments:
+ */
+ pushs1(macro_getdef(p)->defn); /* defn string */
+ pushs1((char *)macro_name(p)); /* macro name */
+ pushs(ep); /* start next..*/
+
+ if (l != LPAREN && PARLEV == 0) {
+ /* no bracks */
+ chrsave(EOS);
+
+ if ((size_t)sp == STACKMAX)
+ errx(1, "internal stack overflow");
+ eval((const char **) mstack+fp+1, 2,
+ CALTYP, TRACESTATUS);
+
+ ep = PREVEP; /* flush strspace */
+ sp = PREVSP; /* previous sp.. */
+ fp = PREVFP; /* rewind stack...*/
+ }
+ }
+ } else if (t == EOF) {
+ if (sp > -1 && ilevel <= 0) {
+ if (!quiet) {
+ warnx("unexpected end of input, "
+ "unclosed parenthesis:");
+ dump_stack(paren, PARLEV);
+ }
+ exit(EXIT_FAILURE);
+ }
+ if (ilevel <= 0)
+ break; /* all done thanks.. */
+ release_input(infile+ilevel--);
+ emit_synchline();
+ bufbase = bbase[ilevel];
+ continue;
+ } else if (sp < 0) { /* not in a macro at all */
+ reallyputchar(t); /* output directly.. */
+ }
+
+ else switch(t) {
+
+ case LPAREN:
+ if (PARLEV > 0)
+ chrsave(t);
+ while (isspace(l = gpbc())) /* skip blank, tab, nl.. */
+ if (PARLEV > 0)
+ chrsave(l);
+ pushback(l);
+ record(paren, PARLEV++);
+ break;
+
+ case RPAREN:
+ if (--PARLEV > 0)
+ chrsave(t);
+ else { /* end of argument list */
+ chrsave(EOS);
+
+ if ((size_t)sp == STACKMAX)
+ errx(1, "internal stack overflow");
+
+ eval((const char **) mstack+fp+1, sp-fp,
+ CALTYP, TRACESTATUS);
+
+ ep = PREVEP; /* flush strspace */
+ sp = PREVSP; /* previous sp.. */
+ fp = PREVFP; /* rewind stack...*/
+ }
+ break;
+
+ case COMMA:
+ if (PARLEV == 1) {
+ chrsave(EOS); /* new argument */
+ while (isspace(l = gpbc()))
+ ;
+ pushback(l);
+ pushs(ep);
+ } else
+ chrsave(t);
+ break;
+
+ default:
+ if (LOOK_AHEAD(t, scommt)) {
+ char *q;
+ for (q = scommt; *q; q++)
+ chrsave(*q);
+ for(;;) {
+ t = gpbc();
+ if (LOOK_AHEAD(t, ecommt)) {
+ for (q = ecommt; *q; q++)
+ chrsave(*q);
+ break;
+ }
+ if (t == EOF)
+ break;
+ CHRSAVE(t);
+ }
+ } else
+ CHRSAVE(t); /* stack the char */
+ break;
+ }
+ }
+}
+
+/*
+ * output string directly, without pushing it for reparses.
+ */
+void
+outputstr(const char *s)
+{
+ if (sp < 0)
+ reallyoutputstr(s);
+ else
+ while (*s)
+ CHRSAVE(*s++);
+}
+
+void
+reallyoutputstr(const char *s)
+{
+ if (synch_lines) {
+ while (*s) {
+ fputc(*s, active);
+ if (*s++ == '\n') {
+ infile[ilevel].synch_lineno++;
+ if (infile[ilevel].synch_lineno !=
+ infile[ilevel].lineno)
+ do_emit_synchline();
+ }
+ }
+ } else
+ fputs(s, active);
+}
+
+void
+reallyputchar(int c)
+{
+ putc(c, active);
+ if (synch_lines && c == '\n') {
+ infile[ilevel].synch_lineno++;
+ if (infile[ilevel].synch_lineno != infile[ilevel].lineno)
+ do_emit_synchline();
+ }
+}
+
+/*
+ * build an input token..
+ * consider only those starting with _ or A-Za-z.
+ */
+static ndptr
+inspect(int c, char *tp)
+{
+ char *name = tp;
+ char *etp = tp+MAXTOK;
+ ndptr p;
+
+ *tp++ = c;
+
+ while ((isalnum(c = gpbc()) || c == '_') && tp < etp)
+ *tp++ = c;
+ if (c != EOF)
+ PUSHBACK(c);
+ *tp = EOS;
+ /* token is too long, it won't match anything, but it can still
+ * be output. */
+ if (tp == ep) {
+ outputstr(name);
+ while (isalnum(c = gpbc()) || c == '_') {
+ if (sp < 0)
+ reallyputchar(c);
+ else
+ CHRSAVE(c);
+ }
+ *name = EOS;
+ return NULL;
+ }
+
+ p = ohash_find(&macros, ohash_qlookupi(&macros, name, (void *)&tp));
+ if (p == NULL)
+ return NULL;
+ if (macro_getdef(p) == NULL)
+ return NULL;
+ return p;
+}
+
+/*
+ * initkwds - initialise m4 keywords as fast as possible.
+ * This very similar to install, but without certain overheads,
+ * such as calling lookup. Malloc is not used for storing the
+ * keyword strings, since we simply use the static pointers
+ * within keywrds block.
+ */
+static void
+initkwds(void)
+{
+ unsigned int type;
+ size_t i;
+
+ for (i = 0; i < MAXKEYS; i++) {
+ type = keywrds[i].ktyp;
+ if ((keywrds[i].ktyp & NOARGS) == 0)
+ type |= NEEDARGS;
+ setup_builtin(keywrds[i].knam, type);
+ }
+}
+
+static void
+record(struct position *t, int lev)
+{
+ if (lev < MAXRECORD) {
+ t[lev].name = CURRENT_NAME;
+ t[lev].line = CURRENT_LINE;
+ }
+}
+
+static void
+dump_stack(struct position *t, int lev)
+{
+ int i;
+
+ for (i = 0; i < lev; i++) {
+ if (i == MAXRECORD) {
+ fprintf(stderr, " ...\n");
+ break;
+ }
+ fprintf(stderr, " %s at line %lu\n",
+ t[i].name, t[i].line);
+ }
+}
+
+
+static void
+enlarge_stack(void)
+{
+ STACKMAX += STACKMAX/2;
+ mstack = xrealloc(mstack, sizeof(stae) * STACKMAX,
+ "Evaluation stack overflow (%lu)",
+ (unsigned long)STACKMAX);
+ sstack = xrealloc(sstack, STACKMAX,
+ "Evaluation stack overflow (%lu)",
+ (unsigned long)STACKMAX);
+}
+
+static const struct {
+ const char *n;
+ const char *d;
+} nd [] = {
+{ "-d, --debug[=flags]", "set debug flags" },
+{ "-D, --define=name[=value]", "define macro" },
+{ "-e, --error-output=file", "send error output to file" },
+{ "-E, --fatal-warnings", "exit on warnings" },
+{ "-F, --freeze-state=file", "save state to file" },
+{ "-g, --gnu", "enable gnu extensions" },
+{ " --help", "print this message and exit" },
+{ "-I, --include=file", "include file" },
+{ "-i, --interactive", "unbuffer output, ignore tty signals" },
+{ "-L, --nesting-limit=num", "macro expansion nesting limit (unimpl)" },
+{ "-P, --prefix-builtins", "prefix builtins with m4_" },
+{ "-Q, --quiet", "don't print warnings" },
+{ "-R, --reload-state=file", "restore state from file" },
+{ "-Q, --silent", "don't print warnings" },
+{ "-s, --synclines", "output line directives for cpp(1)" },
+{ "-t, --trace=macro", "trace the named macro" },
+{ "-G, --traditional", "disable gnu extensions" },
+{ "-U, --undefine=name", "undefine the named macro" },
+{ "-v, --version", "print the version number and exit" },
+};
+
+static void
+help(void)
+{
+ size_t i;
+ fprintf(stdout, "%s version %d\n\n", getprogname(), VERSION);
+ usage(stdout);
+
+ fprintf(stdout, "\nThe long options are:\n");
+ for (i = 0; i < __arraycount(nd); i++)
+ fprintf(stdout, "\t%-25.25s\t%s\n", nd[i].n, nd[i].d);
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-09-20 23:02:02 +0000