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// SPDX-License-Identifier: GPL-2.0-or-later
// SPDX-FileCopyrightText: © 2000-2003 Wolfgang Denk <wd@denx.de>, DENX Software Engineering
#include <common.h>
#include <command.h>
#include <getopt.h>
#include <complete.h>
static void list_group(int verbose, const char *grpname, uint32_t group)
{
struct command *cmdtp;
bool first = true;
int pos = 0;
int len;
for_each_command(cmdtp) {
if (cmdtp->group != group)
continue;
if (first) {
first = false;
printf("%s commands:\n", grpname);
if (!verbose) {
printf(" ");
pos = 2;
}
}
if (verbose) {
printf(" %-21s %s\n", cmdtp->name, cmdtp->desc);
continue;
}
len = strlen(cmdtp->name);
if (pos + len + 2 > 77) {
printf("\n %s", cmdtp->name);
pos = len + 2;
} else {
if (pos != 2) {
printf(", ");
pos += 2;
}
puts(cmdtp->name);
pos += len;
}
}
if (!first)
printf("\n");
}
static void list_commands(int verbose)
{
putchar('\n');
list_group(verbose, "Information", CMD_GRP_INFO);
list_group(verbose, "Boot", CMD_GRP_BOOT);
list_group(verbose, "Partition", CMD_GRP_PART);
list_group(verbose, "Environment", CMD_GRP_ENV);
list_group(verbose, "File", CMD_GRP_FILE);
list_group(verbose, "Scripting", CMD_GRP_SCRIPT);
list_group(verbose, "Network", CMD_GRP_NET);
list_group(verbose, "Console", CMD_GRP_CONSOLE);
list_group(verbose, "Memory", CMD_GRP_MEM);
list_group(verbose, "Hardware manipulation", CMD_GRP_HWMANIP);
list_group(verbose, "Miscellaneous", CMD_GRP_MISC);
list_group(verbose, "Ungrouped", 0);
printf("Use 'help COMMAND' for more details.\n\n");
}
/*
* Use puts() instead of printf() to avoid printf buffer overflow
* for long help messages
*/
static int do_help(int argc, char *argv[])
{
struct command *cmdtp;
int opt, verbose = 0, all = 0;
while ((opt = getopt(argc, argv, "va")) > 0) {
switch (opt) {
case 'v':
verbose = 1;
break;
case 'a':
all = 1;
break;
default:
return COMMAND_ERROR_USAGE;
}
}
if (all) {
for_each_command(cmdtp)
barebox_cmd_usage(cmdtp);
return 0;
}
if (optind == argc) { /* show list of commands */
list_commands(verbose);
return 0;
}
/* command help (long version) */
if ((cmdtp = find_cmd(argv[optind])) != NULL) {
barebox_cmd_usage(cmdtp);
return 0;
} else {
printf ("Unknown command '%s' - try 'help'"
" without arguments for list of all"
" known commands\n\n", argv[optind]
);
return 1;
}
}
BAREBOX_CMD_HELP_START(help)
BAREBOX_CMD_HELP_TEXT("Without arguments, lists all commands. With an argument, print help")
BAREBOX_CMD_HELP_TEXT("about the specified command. If the argument is 'all', then output help")
BAREBOX_CMD_HELP_TEXT("for all commands.")
BAREBOX_CMD_HELP_TEXT("")
BAREBOX_CMD_HELP_TEXT("Options:")
BAREBOX_CMD_HELP_OPT ("-a", "output help on all commands")
BAREBOX_CMD_HELP_OPT ("-v", "verbose")
BAREBOX_CMD_HELP_END
static const char * const help_aliases[] = { "?", NULL};
BAREBOX_CMD_START(help)
.cmd = do_help,
.aliases = help_aliases,
BAREBOX_CMD_DESC("print online help")
BAREBOX_CMD_OPTS("[-v] [COMMAND]")
BAREBOX_CMD_GROUP(CMD_GRP_INFO)
BAREBOX_CMD_HELP(cmd_help_help)
BAREBOX_CMD_COMPLETE(command_complete)
BAREBOX_CMD_END
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