/*
* Command line utility for making sense of C declarations.
* Copyright © 2011-2012, 2020-2023 Nick Bowler
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "cdecl99.h"
#include "cdecl.h"
#include "help.h"
#include "xtra.h"
#include "copysym.h"
#include "options.h"
#if HAVE_READLINE_READLINE_H
# include
#endif
#if HAVE_RL_ADD_HISTORY && HAVE_READLINE_HISTORY_H
# include
/* call add_history only if the line is non-blank */
static void do_add_history(const char *line)
{
if (line[strspn(line, " \t")])
add_history(line);
}
#else
static void do_add_history(const char *line)
{
}
#endif
static const char *progname = "cdecl99";
static bool batch_mode;
void print_error(const char *fmt, ...)
{
va_list(ap);
if (batch_mode)
fprintf(stderr, "%s: ", progname);
fprintf(stderr, "%s", _("error: "));
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fprintf(stderr, "\n");
}
static void print_version(void)
{
const char *copysign = copyright_symbol(locale_charset());
puts(PACKAGE_STRING);
printf("Copyright %s 2023 Nick Bowler.\n", copysign);
puts("License GPLv3+: GNU GPL version 3 or any later version.");
puts("This is free software: you are free to change and redistribute it.");
puts("There is NO WARRANTY, to the extent permitted by law.");
}
static void print_usage(FILE *f)
{
fprintf(f, _("Usage: %s [options]\n"), progname);
if (f != stdout)
fprintf(f, _("Try %s --help for more information.\n"),
progname);
}
static void print_help(const struct option *lopts)
{
struct lopt_help help = {0};
const struct option *opt;
print_usage(stdout);
puts(_("This is \"cdecl99\": a command-line tool for parsing and constructing\n"
"complicated C declarations."));
putchar('\n');
puts(_("Options:"));
for (opt = lopts; opt->name; opt++) {
if (!lopt_get_help(opt, &help))
continue;
help_print_option(opt, help.arg, help.desc, 20);
}
putchar('\n');
puts(_("For more information, see the cdecl99(1) man page."));
putchar('\n');
/*
* TRANSLATORS: Please add *another line* indicating where users should
* report translation bugs.
*/
printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
}
static int do_getline(char **linebuf, size_t *n)
{
ssize_t rc;
if ((rc = getline(linebuf, n, stdin)) < 0) {
if (ferror(stdin))
print_error("%s", strerror(errno));
return 0;
}
if (rc-- && (*linebuf)[rc] == '\n')
(*linebuf)[rc] = '\0';
return 1;
}
static int do_readline(char **linebuf, size_t *n, bool batch)
{
#if !HAVE_READLINE
if (!batch) {
fputs("> ", stdout);
fflush(stdout);
}
return do_getline(linebuf, n);
#else
if (batch)
return do_getline(linebuf, n);
free(*linebuf);
if (!(*linebuf = readline("> ")))
return 0;
do_add_history(*linebuf);
return 1;
#endif
}
static int repl(bool batch)
{
char *line = NULL;
bool fail = 0;
size_t n;
while (do_readline(&line, &n, batch)) {
int rc = run_command(line, batch);
if (rc > 0)
break;
if (rc < 0)
fail = batch;
}
free(line);
return fail ? EXIT_FAILURE : 0;
}
static int repl_cmdline(unsigned count, char **commands)
{
bool fail = 0;
unsigned i;
for (i = 0; i < count; i++) {
int rc = run_command(commands[i], true);
if (rc > 0)
break;
if (rc < 0)
fail = true;
}
return fail ? EXIT_FAILURE : 0;
}
/* Initialize gettext */
static void init_i18n(void)
{
if (!ENABLE_NLS)
return;
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
}
enum {
INIT_EXIT_SUCCESS = -1,
INIT_EXIT_FAILURE = -2
};
static int initialize(int argc, char **argv)
{
int i, opt, quiet = 0, execute = 0;
const char *filename = NULL;
XTRA_PACKED_LOPTS(lopts);
if (argc > 0)
progname = argv[0];
init_i18n();
while ((opt = getopt_long(argc, argv, SOPT_STRING, lopts, 0)) != -1) {
switch (opt) {
case 'q':
quiet = 1;
break;
case 'b':
batch_mode = true;
break;
case 'i':
batch_mode = false;
break;
case 'f':
filename = optarg;
break;
case 'e':
argv[execute++] = optarg;
break;
case 'V':
print_version();
return INIT_EXIT_SUCCESS;
case 'H':
print_help(lopts);
return INIT_EXIT_SUCCESS;
default:
print_usage(stderr);
return INIT_EXIT_FAILURE;
}
}
if (optind < argc) {
fprintf(stderr, "%s: ", progname);
fprintf(stderr, _("excess command-line arguments:"));
for (i = optind; i < argc; i++) {
fprintf(stderr, " %s", argv[i]);
}
fprintf(stderr, "\n");
print_usage(stderr);
return INIT_EXIT_FAILURE;
}
/* --filename and --execute imply --batch. */
if (filename || execute)
batch_mode = true;
/* --batch implies --quiet */
if (!batch_mode && !quiet)
print_version();
/* --execute supersedes --filename */
if (filename && !execute) {
if (!freopen(filename, "r", stdin)) {
print_error("failed to open %s: %s", filename,
strerror(errno));
return INIT_EXIT_FAILURE;
}
}
return execute;
}
int main(int argc, char **argv)
{
int execute;
switch ((execute = initialize(argc, argv))) {
case INIT_EXIT_SUCCESS: return EXIT_SUCCESS;
case INIT_EXIT_FAILURE: return EXIT_FAILURE;
}
if (execute)
return repl_cmdline(execute, argv);
else
return repl(batch_mode);
}