80 lines
1.3 KiB
C
80 lines
1.3 KiB
C
#ident "$Revision: 1.3 $"
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#include <stdio.h>
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#include "command.h"
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#include "help.h"
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#include "output.h"
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static void help_all(void);
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static void help_onecmd(const char *cmd, const cmdinfo_t *ct);
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static int help_f(int argc, char **argv);
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static void help_oneline(const char *cmd, const cmdinfo_t *ct);
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static const cmdinfo_t help_cmd =
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{ "help", NULL, help_f, 0, 1, 0, "[command]",
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"help for one or all commands", NULL };
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static void
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help_all(void)
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{
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const cmdinfo_t *ct;
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for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++)
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help_oneline(ct->name, ct);
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dbprintf("\nUse 'help commandname' for extended help.\n");
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}
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static int
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help_f(
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int argc,
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char **argv)
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{
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const cmdinfo_t *ct;
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if (argc == 0) {
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help_all();
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return 0;
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}
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ct = find_command(argv[0]);
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if (ct == NULL) {
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dbprintf("command %s not found\n", argv[0]);
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return 0;
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}
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help_onecmd(argv[0], ct);
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return 0;
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}
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void
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help_init(void)
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{
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add_command(&help_cmd);
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}
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static void
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help_onecmd(
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const char *cmd,
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const cmdinfo_t *ct)
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{
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help_oneline(cmd, ct);
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if (ct->help)
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ct->help();
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}
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static void
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help_oneline(
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const char *cmd,
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const cmdinfo_t *ct)
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{
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if (cmd)
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dbprintf("%s ", cmd);
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else {
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dbprintf("%s ", ct->name);
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if (ct->altname)
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dbprintf("(or %s) ", ct->altname);
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}
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if (ct->args)
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dbprintf("%s ", ct->args);
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dbprintf("-- %s\n", ct->oneline);
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}
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