+/*
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <locale.h>
+#include <assert.h>
+#include <stdarg.h>
+
#include <getopt.h>
-#include "readline.h"
+#include <gettext.h>
+#include <localcharset.h>
+#include <mbswidth.h>
+
+#include "cdecl99.h"
#include "cdecl.h"
+#include "help.h"
+#include "xtra.h"
+#include "copysym.h"
+#include "options.h"
+
+#if HAVE_READLINE_READLINE_H
+# include <readline/readline.h>
+#endif
+#if HAVE_RL_ADD_HISTORY && HAVE_READLINE_HISTORY_H
+# include <readline/history.h>
+
+/* 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 const char sopts[] = "VH";
-static const struct option lopts[] = {
- { "version", 0, NULL, 'V' },
- { "help", 0, NULL, 'H' },
- { 0 }
-};
+static bool interactive = true;
+
+void print_error(const char *fmt, ...)
+{
+ va_list(ap);
+
+ if (!interactive)
+ 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);
- puts("Copyright (C) 2011 Nick Bowler.");
- puts("License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.");
+ 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);
+ fprintf(f, _("Usage: %s [options]\n"), progname);
+ if (f != stdout)
+ fprintf(f, _("Try %s --help for more information.\n"),
+ progname);
}
-static void print_help(void)
+static void print_help(const struct option *lopts)
{
+ struct lopt_help help = {0};
+ const struct option *opt;
+
print_usage(stdout);
- puts("Detailed help coming soon.");
+
+ 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 repl(void)
+static int repl_cmdline(unsigned count, char **commands)
{
- struct cdecl *decl;
- print_version();
+ int ret = 0;
+ unsigned i;
- for (char *line; (line = readline("> ")); free(line)) {
- decl = cdecl_parse_decl(line);
- cdecl_free(decl);
+ for (i = 0; i < count; i++) {
+ int rc = run_command(commands[i], false);
+ if (rc < 0)
+ ret = -1;
+ else if (rc > 0)
+ break;
}
- return 0;
+ return ret;
}
-int main(int argc, char **argv)
+static int do_getline(char **linebuf, size_t *n)
{
- int opt;
+ 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, int interactive)
+{
+#if !HAVE_READLINE
+ if (interactive) {
+ fputs("> ", stdout);
+ fflush(stdout);
+ }
+
+ return do_getline(linebuf, n);
+#else
+ if (!interactive)
+ return do_getline(linebuf, n);
+
+ free(*linebuf);
+ if (!(*linebuf = readline("> ")))
+ return 0;
+
+ do_add_history(*linebuf);
+ return 1;
+#endif
+}
+
+static int repl(int interactive)
+{
+ char *line = NULL;
+ int ret = 0;
+ size_t n;
+
+ while (do_readline(&line, &n, interactive)) {
+ int rc = run_command(line, interactive);
+ if (rc > 0)
+ break;
+ else if (rc < 0)
+ ret = -!interactive;
+ }
+
+ free(line);
+ return ret;
+}
+
+/* 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];
- while ((opt = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
+ init_i18n();
+
+ while ((opt = getopt_long(argc, argv, SOPT_STRING, lopts, 0)) != -1) {
switch (opt) {
+ case 'q':
+ quiet = 1;
+ break;
+ case 'b':
+ interactive = false;
+ break;
+ case 'i':
+ interactive = true;
+ break;
+ case 'f':
+ filename = optarg;
+ break;
+ case 'e':
+ argv[execute++] = optarg;
+ break;
case 'V':
print_version();
- return EXIT_SUCCESS;
+ return INIT_EXIT_SUCCESS;
case 'H':
- print_help();
- return EXIT_SUCCESS;
+ print_help(lopts);
+ return INIT_EXIT_SUCCESS;
default:
print_usage(stderr);
- return EXIT_FAILURE;
+ return INIT_EXIT_FAILURE;
}
}
- if (repl() != 0)
- return 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)
+ interactive = false;
+
+ /* --batch implies --quiet */
+ if (interactive && !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 rc, execute;
+
+ switch ((execute = initialize(argc, argv))) {
+ case INIT_EXIT_SUCCESS: return EXIT_SUCCESS;
+ case INIT_EXIT_FAILURE: return EXIT_FAILURE;
+ }
+
+ if (execute)
+ rc = repl_cmdline(execute, argv);
+ else
+ rc = repl(interactive);
+
+ if (rc != 0)
+ return EXIT_FAILURE;
return EXIT_SUCCESS;
}