int cmd_help(char **arg)
{
const char *topic = get_arg(arg);
if (topic) {
struct cmddb_record cmd;
struct opdb_key key;
if (!cmddb_get(topic, &cmd)) {
printc("\x1b[1mCOMMAND: %s\x1b[0m\n\n%s\n",
cmd.name, cmd.help);
return 0;
}
if (!opdb_get(topic, &key, NULL)) {
printc("\x1b[1mOPTION: %s (%s)\x1b[0m\n\n%s\n",
key.name, type_text(key.type), key.help);
return 0;
}
printc_err("help: unknown command: %s\n", topic);
return -1;
} else {
struct vector v;
vector_init(&v, sizeof(const char *));
if (!cmddb_enum(push_command_name, &v)) {
printc("Available commands:\n");
namelist_print(&v);
printc("\n");
} else {
pr_error("help: can't allocate memory for command list");
}
vector_realloc(&v, 0);
if (!opdb_enum(push_option_name, &v)) {
printc("Available options:\n");
namelist_print(&v);
printc("\n");
} else {
pr_error("help: can't allocate memory for option list");
}
vector_destroy(&v);
printc("Type \"help <topic>\" for more information.\n");
printc("Use the \"opt\" command (\"help opt\") to set "
"options.\n");
#if defined(__Windows__) && !defined(USE_READLINE)
printc("Press Ctrl+Z, Enter to quit.\n");
#else
printc("Press Ctrl+D to quit.\n");
#endif
}
return 0;
}
static int do_command(char *arg, int interactive)
{
const char *cmd_text;
int len = strlen(arg);
while (len && isspace(arg[len - 1]))
len--;
arg[len] = 0;
cmd_text = get_arg(&arg);
if (cmd_text) {
char translated[1024];
struct cmddb_record cmd;
if (translate_alias(cmd_text, arg,
translated, sizeof(translated)) < 0)
return -1;
arg = translated;
cmd_text = get_arg(&arg);
if (!cmddb_get(cmd_text, &cmd)) {
int old = in_reader_loop;
int ret;
in_reader_loop = interactive;
ret = cmd.func(&arg);
in_reader_loop = old;
return ret;
}
printc_err("unknown command: %s (try \"help\")\n",
cmd_text);
return -1;
}
return 0;
}
