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mpv/options/parse_commandline.c

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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <stdbool.h>
#include "osdep/io.h"
#include "common/global.h"
#include "common/msg.h"
#include "common/msg_control.h"
#include "m_option.h"
#include "m_config.h"
#include "options.h"
#include "common/playlist.h"
#include "parse_commandline.h"
#define GLOBAL 0
#define LOCAL 1
#define dvd_range(a) (a >= 0 && a < 255)
struct parse_state {
struct m_config *config;
int argc;
char **argv;
bool no_more_opts;
bool error;
bool is_opt;
struct bstr arg;
struct bstr param;
};
// Returns 0 if a valid option/file is available, <0 on error, 1 on end of args.
static int split_opt_silent(struct parse_state *p)
{
assert(!p->error);
if (p->argc < 1)
return 1;
p->is_opt = false;
p->arg = bstr0(p->argv[0]);
p->param = bstr0(NULL);
p->argc--;
p->argv++;
if (p->no_more_opts || !bstr_startswith0(p->arg, "-") || p->arg.len == 1)
return 0;
if (bstrcmp0(p->arg, "--") == 0) {
p->no_more_opts = true;
return split_opt_silent(p);
}
p->is_opt = true;
if (!bstr_eatstart0(&p->arg, "--"))
bstr_eatstart0(&p->arg, "-");
bool ambiguous = !bstr_split_tok(p->arg, "=", &p->arg, &p->param);
bool need_param = m_config_option_requires_param(p->config, p->arg) > 0;
if (ambiguous && need_param) {
if (p->argc < 1)
return M_OPT_MISSING_PARAM;
p->param = bstr0(p->argv[0]);
p->argc--;
p->argv++;
}
return 0;
}
// Returns true if more args, false if all parsed or an error occurred.
static bool split_opt(struct parse_state *p)
{
int r = split_opt_silent(p);
if (r >= 0)
return r == 0;
p->error = true;
MP_FATAL(p->config, "Error parsing commandline option %.*s: %s\n",
BSTR_P(p->arg), m_option_strerror(r));
return false;
}
#ifdef __MINGW32__
static void process_non_option(struct playlist *files, const char *arg)
{
glob_t gg;
// Glob filenames on Windows (cmd.exe doesn't do this automatically)
if (glob(arg, 0, NULL, &gg)) {
playlist_add_file(files, arg);
} else {
for (int i = 0; i < gg.gl_pathc; i++)
playlist_add_file(files, gg.gl_pathv[i]);
globfree(&gg);
}
}
#else
static void process_non_option(struct playlist *files, const char *arg)
{
playlist_add_file(files, arg);
}
#endif
// returns M_OPT_... error code
int m_config_parse_mp_command_line(m_config_t *config, struct playlist *files,
struct mpv_global *global,
int argc, char **argv)
{
int ret = M_OPT_UNKNOWN;
int mode = 0;
struct playlist_entry *local_start = NULL;
int local_params_count = 0;
struct playlist_param *local_params = 0;
assert(config != NULL);
mode = GLOBAL;
struct parse_state p = {config, argc - 1, argv + 1};
while (split_opt(&p)) {
if (p.is_opt) {
int flags = M_SETOPT_FROM_CMDLINE;
if (mode == LOCAL)
flags |= M_SETOPT_BACKUP | M_SETOPT_CHECK_ONLY;
int r = m_config_set_option_ext(config, p.arg, p.param, flags);
if (r <= M_OPT_EXIT) {
ret = r;
goto err_out;
}
if (r < 0) {
MP_FATAL(config, "Setting commandline option --%.*s=%.*s failed.\n",
BSTR_P(p.arg), BSTR_P(p.param));
goto err_out;
}
// Handle some special arguments outside option parser.
if (!bstrcmp0(p.arg, "{")) {
if (mode != GLOBAL) {
MP_ERR(config, "'--{' can not be nested.\n");
goto err_out;
}
mode = LOCAL;
assert(!local_start);
local_start = files->last;
continue;
}
if (!bstrcmp0(p.arg, "}")) {
if (mode != LOCAL) {
MP_ERR(config, "Too many closing '--}'.\n");
goto err_out;
}
if (local_params_count) {
// The files added between '{' and '}' are the entries from
// the entry _after_ local_start, until the end of the list.
// If local_start is NULL, the list was empty on '{', and we
// want all files in the list.
struct playlist_entry *cur
= local_start ? local_start->next : files->first;
if (!cur)
MP_WARN(config, "Ignored options!\n");
while (cur) {
playlist_entry_add_params(cur, local_params,
local_params_count);
cur = cur->next;
}
}
local_params_count = 0;
mode = GLOBAL;
m_config_restore_backups(config);
local_start = NULL;
continue;
}
if (bstrcmp0(p.arg, "playlist") == 0) {
// append the playlist to the local args
char *param0 = bstrdup0(NULL, p.param);
struct playlist *pl = playlist_parse_file(param0, global);
talloc_free(param0);
if (!pl) {
MP_FATAL(config, "Error reading playlist '%.*s'", BSTR_P(p.param));
goto err_out;
}
playlist_transfer_entries(files, pl);
talloc_free(pl);
continue;
}
if (mode == LOCAL) {
MP_TARRAY_APPEND(NULL, local_params, local_params_count,
(struct playlist_param) {p.arg, p.param});
}
} else {
// filename
void *tmp = talloc_new(NULL);
bstr file = p.arg;
char *file0 = bstrdup0(tmp, p.arg);
// expand DVD filename entries like dvd://1-3 into component titles
if (bstr_startswith0(file, "dvd://")) {
int offset = 6;
char *splitpos = strstr(file0 + offset, "-");
if (splitpos != NULL) {
char *endpos;
int start_title = strtol(file0 + offset, &endpos, 10);
int end_title;
//entries like dvd://-2 imply start at title 1
if (start_title < 0) {
end_title = abs(start_title);
start_title = 1;
} else
end_title = strtol(splitpos + 1, &endpos, 10);
if (dvd_range(start_title) && dvd_range(end_title)
&& (start_title < end_title)) {
for (int j = start_title; j <= end_title; j++) {
char *f = talloc_asprintf(tmp, "dvd://%d%s", j,
endpos);
playlist_add_file(files, f);
}
} else
MP_ERR(config, "Invalid play entry %s\n", file0);
} else // dvd:// or dvd://x entry
playlist_add_file(files, file0);
} else {
process_non_option(files, file0);
}
talloc_free(tmp);
}
}
if (p.error)
goto err_out;
if (mode != GLOBAL) {
MP_ERR(config, "Missing closing --} on command line.\n");
goto err_out;
}
ret = 0; // success
err_out:
talloc_free(local_params);
m_config_restore_backups(config);
return ret;
}
/* Parse some command line options early before main parsing.
* --no-config prevents reading configuration files (otherwise done before
* command line parsing), and --really-quiet suppresses messages printed
* during normal options parsing.
*/
void m_config_preparse_command_line(m_config_t *config, struct mpv_global *global,
int argc, char **argv)
{
struct MPOpts *opts = global->opts;
// Hack to shut up parser error messages
mp_msg_mute(global, true);
struct parse_state p = {config, argc - 1, argv + 1};
while (split_opt_silent(&p) == 0) {
if (p.is_opt) {
// Ignore non-pre-parse options. They will be set later.
// Option parsing errors will be handled later as well.
int flags = M_SETOPT_FROM_CMDLINE | M_SETOPT_PRE_PARSE_ONLY;
m_config_set_option_ext(config, p.arg, p.param, flags);
if (bstrcmp0(p.arg, "v") == 0)
opts->verbose++;
}
}
mp_msg_mute(global, false);
for (int n = 0; n < config->num_opts; n++)
config->opts[n].warning_was_printed = false;
}
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