/*
* Command line utility for making sense of C declarations.
- * Copyright © 2011-2012, 2020-2022 Nick Bowler
+ * Copyright © 2011-2012, 2020-2024 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
#include <locale.h>
#include <assert.h>
#include <stdarg.h>
+#include <inttypes.h>
#include <getopt.h>
#include <gettext.h>
-#include <readline.h>
-#include <striconv.h>
-#include <localcharset.h>
#include <mbswidth.h>
#include "cdecl99.h"
#include "cdecl.h"
#include "help.h"
+#include "xtra.h"
+#include "options.h"
+#include "version.h"
+#include "getline.h"
-static const char *progname = "cdecl99";
-static bool interactive = true;
+#if HAVE_READLINE_READLINE_H
+# include <readline/readline.h>
+#endif
+#if HAVE_RL_ADD_HISTORY && HAVE_READLINE_HISTORY_H
+# include <readline/history.h>
-#include "options.h"
-static const char sopts[] = SOPT_STRING;
-static const struct option lopts[] = {
- LOPTS_INITIALIZER,
- {0}
-};
+/* 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 (!interactive)
- fprintf(stderr, "%s: ", progname);
- fprintf(stderr, "%s", _("error: "));
+ fprintf(stderr, batch_mode ? "%s: %s" : "%.0s%s",
+ progname, _("error: "));
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
static void print_version(void)
{
- const char *copysign = "(C)";
- void *convsign = NULL;
-
- if (ENABLE_NLS) {
- convsign = str_iconv("\xc2\xa9", "UTF-8", locale_charset());
- if (convsign)
- copysign = convsign;
- }
-
- puts(PACKAGE_STRING);
- printf("Copyright %s 2022 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.");
-
- free(convsign);
+ do_print_version(PACKAGE_STRING);
}
static void print_usage(FILE *f)
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(_("Options:"));
for (opt = lopts; opt->name; opt++) {
- struct lopt_help help;
-
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');
+ printf("\n%s\n\n",
+ _("For more information, see the cdecl99(1) man page."));
/*
* TRANSLATORS: Please add *another line* indicating where users should
printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
}
-static bool is_blank_line(const char *line)
+static int do_getline(char **linebuf, size_t *n)
{
- for (size_t i = 0; line[i]; i++) {
- if (!isblank((unsigned char)line[i]))
- return false;
+ int rc;
+
+ if ((rc = dx_getline(linebuf, n, stdin)) < 0) {
+ if (rc == DX_GETLINE_ENOMEM)
+ print_error("%s", _("failed to allocate memory"));
+ else
+ print_error("%s", strerror(errno));
+ return 0;
}
- return true;
+ return rc;
}
-static int repl(void)
+static int do_readline(char **linebuf, size_t *n, bool batch)
{
- char *line;
+#if !HAVE_READLINE
+ if (!batch) {
+ fputs("> ", stdout);
+ fflush(stdout);
+ }
- for (; (line = readline("> ")); free(line)) {
- if (!is_blank_line(line))
- add_history(line);
+ return do_getline(linebuf, n);
+#else
+ if (batch)
+ return do_getline(linebuf, n);
- if (run_command(line, true) > 0)
- break;
- }
+ free(*linebuf);
+ if (!(*linebuf = readline("> ")))
+ return 0;
- free(line);
- return 0;
+ do_add_history(*linebuf);
+ return 1;
+#endif
}
-static int repl_cmdline(int argc, char **argv)
+static int repl(bool batch)
{
- int opt, rc, ret = 0;
-
- optind = 1;
- while ((opt = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
- if (opt != 'e')
- continue;
+ char *line = NULL;
+ bool fail = 0;
+ size_t n = 0;
- rc = run_command(optarg, false);
- if (rc < 0)
- ret = -1;
- else if (rc > 0)
+ while (do_readline(&line, &n, batch)) {
+ int rc = run_command(line, batch);
+ if (rc > 0)
break;
+ if (rc < 0)
+ fail = batch;
}
- return ret;
+ free(line);
+ return fail ? EXIT_FAILURE : 0;
}
-static int repl_noninteractive(void)
+static int repl_cmdline(unsigned count, char **commands)
{
- int rc, ret = 0, saved_errno;
- char *line = NULL;
- size_t n;
-
- while (getline(&line, &n, stdin) >= 0) {
- char *c = strchr(line, '\n');
- if (c)
- *c = '\0';
+ bool fail = 0;
+ unsigned i;
- rc = run_command(line, false);
- if (rc < 0)
- ret = -1;
- else if (rc > 0)
+ for (i = 0; i < count; i++) {
+ int rc = run_command(commands[i], true);
+ if (rc > 0)
break;
+ if (rc < 0)
+ fail = true;
}
- saved_errno = errno;
- free(line);
-
- if (ferror(stdin)) {
- print_error("%s", strerror(saved_errno));
- return -1;
- }
-
- return ret;
+ return fail ? EXIT_FAILURE : 0;
}
/* Initialize gettext */
textdomain(PACKAGE);
}
-int main(int argc, char **argv)
+enum {
+ INIT_EXIT_SUCCESS = -1,
+ INIT_EXIT_FAILURE = -2
+};
+
+static int initialize(int argc, char **argv)
{
- bool show_intro = true, execute = false;
+ int i, opt, quiet = 0, execute = 0;
const char *filename = NULL;
- int i, opt, rc;
+
+ XTRA_PACKED_LOPTS(lopts);
if (argc > 0)
progname = argv[0];
init_i18n();
- while ((opt = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
+ while ((opt = getopt_long(argc, argv, SOPT_STRING, lopts, 0)) != -1) {
switch (opt) {
case 'q':
- show_intro = false;
+ quiet = 1;
break;
case 'b':
- interactive = false;
+ batch_mode = true;
break;
case 'i':
- interactive = true;
+ batch_mode = false;
break;
case 'f':
filename = optarg;
break;
case 'e':
- execute = true;
+ 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 (optind < argc) {
- fprintf(stderr, "%s: ", progname);
- fprintf(stderr, _("excess command-line arguments:"));
+ fprintf(stderr, "%s: %s", progname,
+ _("excess command-line arguments:"));
for (i = optind; i < argc; i++) {
fprintf(stderr, " %s", argv[i]);
}
fprintf(stderr, "\n");
print_usage(stderr);
- return EXIT_FAILURE;
+ return INIT_EXIT_FAILURE;
}
/* --filename and --execute imply --batch. */
if (filename || execute)
- interactive = false;
+ batch_mode = true;
/* --batch implies --quiet */
- if (interactive && show_intro)
+ if (!batch_mode && !quiet)
print_version();
/* --execute supersedes --filename */
if (filename && !execute) {
if (!freopen(filename, "r", stdin)) {
- print_error("failed to open %s: %s\n", filename,
+ print_error("failed to open %s: %s", filename,
strerror(errno));
- return EXIT_FAILURE;
+ return INIT_EXIT_FAILURE;
}
}
- if (interactive)
- rc = repl();
- else if (execute)
- rc = repl_cmdline(argc, argv);
- else
- rc = repl_noninteractive();
+ return execute;
+}
- if (rc != 0)
- return EXIT_FAILURE;
- return EXIT_SUCCESS;
+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);
}
projects / cdecl99.git / blobdiff