added support of --help and --version

diff --git a/src/main.c b/src/main.c
index 90d5966..f791684 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -19,6 +19,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <getopt.h>
 
 #include <json/json.h>
 
@@ -28,6 +29,7 @@
 #include "note.h"
 #include "tw.h"
 
+static const char *program_name;
 static struct task **tasks;
 static GtkTextView *w_note;
 static GtkEntry *w_description;
@@ -46,6 +48,42 @@ enum {
        COL_PRIORITY
 };
 
+static struct option long_options[] = {
+       {"version", no_argument, 0, 'v'},
+       {"help", no_argument, 0, 'h'},
+       {0, 0, 0, 0}
+};
+
+static void print_version()
+{
+       printf("ptask %s\n", VERSION);
+       printf(_("Copyright (C) %s jeanfi@gmail.com\n"
+                "License GPLv2: GNU GPL version 2 or later "
+                "<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>\n"
+                "This is free software: you are free to change and "
+                " redistribute it.\n"
+                "There is NO WARRANTY, to the extent permitted by law.\n"),
+              "2012-2013");
+}
+
+static void print_help()
+{
+       printf(_("Usage: %s [OPTION]...\n"), program_name);
+
+       puts(_("Ptask is a task management UI based on taskwarrior."));
+
+       puts("");
+       puts(_("Options:"));
+       puts(_("  -h, --help          display this help and exit\n"
+              "  -v, --version       display version information and exit"));
+
+       puts("");
+
+       printf(_("Report bugs to: %s\n"), PACKAGE_BUGREPORT);
+       puts("");
+       printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
+}
+
 static struct task *get_selected_task(GtkTreeView *treeview)
 {
        GtkTreePath *path;
@@ -375,6 +413,9 @@ int main(int argc, char **argv)
        GtkWidget *window, *btn;
        GtkBuilder *builder;
        GtkTreeModel *model;
+       int optc, cmdok, opti;
+
+       program_name = argv[0];
 
        setlocale(LC_ALL, "");
 
@@ -383,6 +424,28 @@ int main(int argc, char **argv)
        textdomain(PACKAGE);
 #endif
 
+       cmdok = 1;
+       while ((optc = getopt_long(argc, argv, "vh", long_options,
+                                  &opti)) != -1) {
+               switch (optc) {
+               case 'h':
+                       print_help();
+                       exit(EXIT_SUCCESS);
+               case 'v':
+                       print_version();
+                       exit(EXIT_SUCCESS);
+               default:
+                       cmdok = 0;
+                       break;
+               }
+       }
+
+       if (!cmdok || optind != argc) {
+               fprintf(stderr, _("Try `%s --help' for more information.\n"),
+                       program_name);
+               exit(EXIT_FAILURE);
+       }
+
        gtk_init(NULL, NULL);
        builder = gtk_builder_new();
        gtk_builder_add_from_file