/*
- * Command line utility for making sense of C declarations.
- * Copyright © 2011 Nick Bowler
+ * Command line utility for making sense of C declarations.
+ * Copyright © 2011-2012 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 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.
+ * 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 <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://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 <getopt.h>
#include <gettext.h>
+#include <assert.h>
#include "readline.h"
+#include "history.h"
#include "cdecl.h"
+#define _(x) gettext(x)
#define N_(x) x
#define PN_(c, x) x
enum { NOPTS = sizeof (struct option[]){RAW_LOPTS} / sizeof (struct option) };
static struct option lopts[NOPTS + !!ENABLE_NLS * NOPTS + 1] = { RAW_LOPTS };
+static struct helptext {
+ int val;
+ const char *text;
+ const char *argname;
+} helptext[] = {
+ /*
+ * TRANSLATORS: Help messages are indented 20 spaces and thus should
+ * not have lines longer than 60 columns.
+ */
+ { 'q', N_("Suppress the welcome message.\n") },
+ { 'b', N_("Execute commands as normal, but do not print any prompts.\n") },
+ { 'i', N_("Run in interactive mode. This is the default.\n") },
+ { 'f', N_("Read commands from FILE instead of standard input.\n"),
+ PN_("longopt|file", "FILE") },
+ { 'e', N_("Execute COMMAND as if it were entered at the prompt.\n"
+ "This can be specified multiple times.\n"),
+ PN_("longopt|execute", "COMMAND") },
+ { 'V', N_("Print a version message and then exit.\n") },
+ { 'H', N_("Print this message.\n") },
+
+ /* TRANSLATORS: ARG is only used for options without help text. */
+ { 0, NULL, PN_("longopt", "ARG") }
+};
+
static void print_version(void)
{
puts(PACKAGE_STRING);
fprintf(f, "Usage: %s [options]\n", progname);
}
+/*
+ * Print the help description of a particular command-line option, identified
+ * by its short option name.
+ */
+static void print_option(int val)
+{
+ const struct option *tmp[2];
+ const struct helptext *help;
+ const char *argname;
+ char context[32];
+ size_t rc, n = 0;
+ int w;
+
+ /* Find the options and help text corresponding to val. */
+ for (const struct option *o = lopts; o->val; o++) {
+ if (o->val == val) {
+ assert(n < sizeof tmp / sizeof tmp[0]);
+ tmp[n++] = o;
+ }
+ }
+
+ for (help = helptext; help->val; help++) {
+ if (help->val == val)
+ break;
+ }
+
+ /* Prepare translations. */
+ if (!ENABLE_NLS) {
+ argname = help->argname;
+ } else if (n > 0) {
+ rc = snprintf(context, sizeof context, "longopt%c%s",
+ help->text ? '|' : '\0', tmp[0]->name);
+ assert(rc < sizeof context);
+
+ if (help->argname)
+ argname = pgettext_expr(context, help->argname);
+ }
+
+ switch (n) {
+ case 0:
+ w = printf(_(" -%c"), val);
+ break;
+ case 1:
+ w = printf(tmp[0]->has_arg ? _(" -%c, --%s=%s")
+ : _(" -%c, --%s"),
+ val, tmp[0]->name, argname);
+ break;
+ case 2:
+ if (tmp[0]->has_arg) {
+ w = printf(_(" -%c, --%s=%s, --%s=%s"), val,
+ tmp[0]->name, argname,
+ tmp[1]->name, argname);
+ } else {
+ w = printf(_(" -%c, --%s, --%s"), val,
+ tmp[0]->name, tmp[1]->name);
+ }
+ break;
+ default:
+ assert(0);
+ }
+
+ if (!help->text) {
+ putchar('\n');
+ return;
+ }
+
+ if (w > 18) {
+ putchar('\n');
+ w = 0;
+ }
+
+ for (const char *line = gettext(help->text); *line;) {
+ const char *nl = strchr(line, '\n');
+
+ if (!nl) {
+ printf("%*s%s\n", 20-w, "", line);
+ break;
+ }
+
+ printf("%*s%.*s\n", 20-w, "", (int)(nl-line), line);
+ line = nl+1;
+ }
+}
+
static void print_help(void)
{
print_usage(stdout);
- puts("Detailed help coming soon.");
+
+ puts(_(
+"This is \"cdecl99\": a command-line tool for parsing and constructing\n"
+"complicated C declarations.\n"));
+
+ puts(_("Options:"));
+ for (const char *c = sopts; *c; c++) {
+ if (*c == ':' || *c == '+' || *c == '-')
+ continue;
+
+ print_option(*c);
+ }
+ putchar('\n');
+
+ puts(_("For more information, see the cdecl99(1) man page.\n"));
+
+ /*
+ * TRANSLATORS: Please add *another line* indicating where users should
+ * report translation bugs.
+ */
+ printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
}
/*
return -1;
}
+static bool is_blank_line(const char *line)
+{
+ for (size_t i = 0; line[i]; i++) {
+ if (!isblank((unsigned char)line[i]))
+ return false;
+ }
+
+ return true;
+}
+
static int repl(void)
{
char *line;
for (; (line = readline("> ")); free(line)) {
+ if (!is_blank_line(line))
+ cdecl_add_history(line);
+
if (!run_command(line))
break;
}
if (!ENABLE_NLS)
return;
- for (int i = 0; i < NOPTS; i++) {
- lopts[i+NOPTS] = lopts[i];
- lopts[i+NOPTS].name = pgettext_expr("longopt", lopts[i].name);
+ for (int i = 0, j = NOPTS; i < NOPTS; i++) {
+ const char *tname = pgettext_expr("longopt", lopts[i].name);
+
+ if (strcmp(tname, lopts[i].name) != 0) {
+ lopts[j] = lopts[i];
+ lopts[j].name = tname;
+ j++;
+ }
}
}