152 lines
3.8 KiB
C
152 lines
3.8 KiB
C
/*
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* (C) Copyright 2000-2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <command.h>
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#include <getopt.h>
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#include <complete.h>
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static void list_group(int verbose, const char *grpname, uint32_t group)
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{
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struct command *cmdtp;
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bool first = true;
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int pos = 0;
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int len;
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for_each_command(cmdtp) {
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if (cmdtp->group != group)
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continue;
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if (first) {
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first = false;
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printf("%s commands:\n", grpname);
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if (!verbose) {
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printf(" ");
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pos = 2;
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}
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}
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if (verbose) {
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printf(" %-21s %s\n", cmdtp->name, cmdtp->desc);
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continue;
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}
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len = strlen(cmdtp->name);
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if (pos + len + 2 > 77) {
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printf("\n %s", cmdtp->name);
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pos = len + 2;
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} else {
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if (pos != 2) {
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printf(", ");
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pos += 2;
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}
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printf(cmdtp->name);
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pos += len;
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}
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}
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if (!first)
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printf("\n");
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}
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static void list_commands(int verbose)
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{
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putchar('\n');
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list_group(verbose, "Information", CMD_GRP_INFO);
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list_group(verbose, "Boot", CMD_GRP_BOOT);
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list_group(verbose, "Partition", CMD_GRP_PART);
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list_group(verbose, "Environment", CMD_GRP_ENV);
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list_group(verbose, "File", CMD_GRP_FILE);
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list_group(verbose, "Scripting", CMD_GRP_SCRIPT);
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list_group(verbose, "Network", CMD_GRP_NET);
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list_group(verbose, "Console", CMD_GRP_CONSOLE);
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list_group(verbose, "Memory", CMD_GRP_MEM);
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list_group(verbose, "Hardware manipulation", CMD_GRP_HWMANIP);
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list_group(verbose, "Miscellaneous", CMD_GRP_MISC);
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list_group(verbose, "Ungrouped", 0);
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printf("Use 'help COMMAND' for more details.\n\n");
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}
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/*
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* Use puts() instead of printf() to avoid printf buffer overflow
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* for long help messages
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*/
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static int do_help(int argc, char *argv[])
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{
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struct command *cmdtp;
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int opt, verbose = 0, all = 0;
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while ((opt = getopt(argc, argv, "va")) > 0) {
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switch (opt) {
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case 'v':
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verbose = 1;
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break;
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case 'a':
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all = 1;
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break;
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}
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}
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if (all) {
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for_each_command(cmdtp)
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barebox_cmd_usage(cmdtp);
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return 0;
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}
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if (optind == argc) { /* show list of commands */
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list_commands(verbose);
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return 0;
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}
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/* command help (long version) */
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if ((cmdtp = find_cmd(argv[optind])) != NULL) {
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barebox_cmd_usage(cmdtp);
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return 0;
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} else {
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printf ("Unknown command '%s' - try 'help'"
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" without arguments for list of all"
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" known commands\n\n", argv[optind]
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);
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return 1;
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}
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}
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BAREBOX_CMD_HELP_START(help)
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BAREBOX_CMD_HELP_TEXT("Without arguments, lists all all commands. With an argument, print help")
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BAREBOX_CMD_HELP_TEXT("about the specified command. If the argument is 'all', then output help")
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BAREBOX_CMD_HELP_TEXT("for all commands.")
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BAREBOX_CMD_HELP_TEXT("")
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BAREBOX_CMD_HELP_TEXT("Options:")
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BAREBOX_CMD_HELP_OPT ("-a", "output help on all commands")
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BAREBOX_CMD_HELP_OPT ("-v", "verbose")
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BAREBOX_CMD_HELP_END
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static const char *help_aliases[] = { "?", NULL};
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BAREBOX_CMD_START(help)
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.cmd = do_help,
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.aliases = help_aliases,
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BAREBOX_CMD_DESC("print online help")
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BAREBOX_CMD_OPTS("[-v] [COMMAND]")
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BAREBOX_CMD_GROUP(CMD_GRP_INFO)
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BAREBOX_CMD_HELP(cmd_help_help)
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BAREBOX_CMD_COMPLETE(command_complete)
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BAREBOX_CMD_END
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