Improve help/man page of para_write.
[paraslash.git] / write.c
diff --git a/write.c b/write.c
index 998a6d2..6e78e77 100644 (file)
--- a/write.c
+++ b/write.c
@@ -14,6 +14,7 @@
 #include "write.cmdline.h"
 #include "list.h"
 #include "sched.h"
+#include "ggo.h"
 #include "stdin.h"
 #include "write.h"
 #include "write_common.h"
@@ -129,20 +130,6 @@ static struct writer_node_group *check_args(void)
        struct writer_node_group *g = NULL;
        struct initial_delay_task *idt = &the_initial_delay_task;
 
-       if (conf.list_writers_given) {
-               char *msg = NULL;
-               FOR_EACH_WRITER(i) {
-                       char *tmp = make_message("%s%s%s",
-                               i? msg : "",
-                               i? " " : "",
-                               writer_names[i]);
-                       free(msg);
-                       msg = tmp;
-               }
-               fprintf(stderr, "%s\n", msg);
-               free(msg);
-               exit(EXIT_SUCCESS);
-       }
        if (conf.start_time_given) {
                long unsigned sec, usec;
                if (sscanf(conf.start_time_arg, "%lu:%lu",
@@ -174,6 +161,33 @@ out:
        return NULL;
 }
 
+__noreturn static void print_help_and_die(void)
+{
+       int i, d = conf.detailed_help_given;
+       const char **p = d? write_args_info_detailed_help
+               : write_args_info_help;
+
+       printf_or_die("%s\n\n", WRITE_CMDLINE_PARSER_PACKAGE "-"
+               WRITE_CMDLINE_PARSER_VERSION);
+       printf_or_die("%s\n\n", write_args_info_usage);
+       for (; *p; p++)
+               printf_or_die("%s\n", *p);
+
+       printf_or_die("\nAvailable writers: \n\t");
+       FOR_EACH_WRITER(i)
+               printf_or_die("%s%s", i? " " : "", writer_names[i]);
+       printf_or_die("\n\n");
+       FOR_EACH_WRITER(i) {
+               struct writer *w = writers + i;
+
+               if (!w->help.short_help)
+                       continue;
+               printf_or_die("Options for %s:\n", writer_names[i]);
+               ggo_print_help(&w->help, d);
+       }
+       exit(0);
+}
+
 /**
  * Para_write's main function.
  *
@@ -192,9 +206,11 @@ int main(int argc, char *argv[])
        struct check_wav_task *cwt = &the_check_wav_task;
        struct initial_delay_task *idt = &the_initial_delay_task;
 
+       init_supported_writers();
        write_cmdline_parser(argc, argv, &conf);
        HANDLE_VERSION_FLAG("write", conf);
-       init_supported_writers();
+       if (conf.help_given || conf.detailed_help_given)
+               print_help_and_die();
 
        wng = check_args();
        if (!wng)