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🎥 Command line media player
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C
at release/0.2
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#include "config.h"
#include <stdio.h>#include <stdlib.h>#include <string.h>#include <errno.h>#include <assert.h>#include <stdbool.h>
#include "mpvcore/mp_msg.h"#include "mpvcore/m_option.h"#include "m_config.h"#include "playlist.h"#include "playlist_parser.h"#include "parser-mpcmd.h"
#define GLOBAL 0#define LOCAL 1
#define dvd_range(a) (a > 0 && a < 256)
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);
int r = m_config_option_requires_param(p->config, p->arg); if (r < 0) return r;
if (ambiguous && r > 0) { 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_tmsg(MSGT_CFGPARSER, MSGL_FATAL, "Error parsing commandline option %.*s: %s\n", BSTR_P(p->arg), m_option_strerror(r)); return false;}
// returns M_OPT_... error codeint m_config_parse_mp_command_line(m_config_t *config, struct playlist *files, int argc, char **argv){ struct MPOpts *opts = config->optstruct; 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, argv}; while (split_opt(&p)) { if (p.is_opt) { int flags = mode == LOCAL ? M_SETOPT_BACKUP | M_SETOPT_CHECK_ONLY : 0; int r; 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_tmsg(MSGT_CFGPARSER, MSGL_FATAL, "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_msg(MSGT_CFGPARSER, MSGL_ERR, "'--{' 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_msg(MSGT_CFGPARSER, MSGL_ERR, "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_msg(MSGT_CFGPARSER, MSGL_WARN, "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, opts); talloc_free(param0); if (!pl) { mp_tmsg(MSGT_CFGPARSER, MSGL_FATAL, "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_tmsg(MSGT_CFGPARSER, MSGL_ERR, "Invalid play entry %s\n", file0);
} else // dvd:// or dvd://x entry playlist_add_file(files, file0); } else playlist_add_file(files, file0); talloc_free(tmp);
// Lock stdin if it will be used as input if (bstrcmp0(file, "-") == 0) m_config_set_option0(config, "consolecontrols", "no"); } }
if (p.error) goto err_out;
if (mode != GLOBAL) { mp_tmsg(MSGT_CFGPARSER, MSGL_ERR, "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;}
extern int mp_msg_levels[];
/* 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, int argc, char **argv){ // Hack to shut up parser error messages int msg_lvl_backup = mp_msg_levels[MSGT_CFGPARSER]; mp_msg_levels[MSGT_CFGPARSER] = -11;
struct parse_state p = {config, argc, argv}; 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. m_config_set_option_ext(config, p.arg, p.param, M_SETOPT_PRE_PARSE_ONLY); if (bstrcmp0(p.arg, "v") == 0) verbose++; } }
mp_msg_levels[MSGT_CFGPARSER] = msg_lvl_backup;}