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 char *command_generator(const char *text, int state)
{
static struct find_context find_data;
if (state == 0) {
// start a new search
find_data.search_text = text;
find_data.skip_until = NULL;
} else {
// continue searching after the last match
find_data.skip_until = find_data.result;
}
find_data.result = NULL;
cmddb_enum(cmddb_find_command, &find_data);
if (find_data.result)
return strdup(find_data.result);
return NULL;
}
