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ecmd_help.c
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ecmd_help.c
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/*
* Copyright (c) 2010, 2011, 2012 Ryan Flannery <[email protected]>
* Copyright (c) 2013 Tiago Cunha <[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <err.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "ecmd.h"
#include "vitunes.h"
static void
ecmd_help_exec(UNUSED int argc, char **argv)
{
char *man_args[3];
/* no help requested for a specific command, give a list of all e-cmds */
if (argc == 0) {
printf("\
The following is a list of e-commands supported by vitunes.\n\
Each command is executed by doing:\n\
$ vitunes -e COMMAND [args ...]\n\
The complete manual for each can be obtained by doing:\n\
$ vitunes -e help COMMAND\n\
The list of available commands are:\n\n\
Command Description\n\
------- ------------------------------------------------------------\n\
add Add files to the database.\n\
addurl Add URL (or non-file playable item) to the database.\n\
check Check files for meta-information.\n\
flush Output the contents of the database to stdout.\n\
help This command.\n\
init Initialize the media database.\n\
rm Remove a file or a URL from the database.\n\
rmfile Alias for \"rm\".\n\
tag Set the meta-information tags in media files.\n\
update Update all files in the database.\n\
");
return;
}
/* if reach here, help fora specific command was requested */
if (strcmp(argv[0], "help") == 0) {
printf("You're a damn fool if you need help with help.\n");
return;
}
man_args[0] = "man";
if (asprintf(&man_args[1], "vitunes-%s", argv[0]) == -1)
err(1, "ecmd_help: asprintf failed");
man_args[2] = NULL;
execvp("man", man_args);
err(1, "ecmd_help: execvp failed");
}
const struct ecmd ecmd_help = {
"help", NULL,
"[command]",
0, 1,
NULL,
NULL,
ecmd_help_exec
};