mirror of https://github.com/mpv-player/mpv
278 lines
8.4 KiB
C
278 lines
8.4 KiB
C
#include <dirent.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <assert.h>
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#include "osdep/io.h"
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#include "mp_msg.h"
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#include "options.h"
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#include "path.h"
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#include "mpcommon.h"
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#include "sub/find_subfiles.h"
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#include "sub/sub.h"
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static struct bstr strip_ext(struct bstr str)
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{
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int dotpos = bstrrchr(str, '.');
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if (dotpos < 0)
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return str;
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return (struct bstr){str.start, dotpos};
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}
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static struct bstr get_ext(struct bstr s)
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{
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int dotpos = bstrrchr(s, '.');
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if (dotpos < 0)
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return (struct bstr){NULL, 0};
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return bstr_splice(s, dotpos + 1, s.len);
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}
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struct subfn {
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int priority;
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char *fname;
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};
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static int compare_sub_priority(const void *a, const void *b)
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{
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const struct subfn *s1 = a;
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const struct subfn *s2 = b;
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if (s1->priority > s2->priority)
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return -1;
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if (s1->priority < s2->priority)
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return 1;
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return strcoll(s1->fname, s2->fname);
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}
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static struct bstr guess_lang_from_filename(struct bstr name)
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{
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if (name.len < 2)
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return (struct bstr){NULL, 0};
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int n = 0;
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int i = name.len - 1;
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if (name.start[i] == ')' || name.start[i] == ']')
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i--;
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while (i >= 0 && isalpha(name.start[i])) {
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n++;
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if (n > 3)
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return (struct bstr){NULL, 0};
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i--;
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}
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if (n < 2)
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return (struct bstr){NULL, 0};
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return (struct bstr){name.start + i + 1, n};
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}
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struct sub_list {
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struct subfn subs[MAX_SUBTITLE_FILES];
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int sid;
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void *ctx;
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};
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/**
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* @brief Append all the subtitles in the given path matching fname
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* @param opts MPlayer options
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* @param slist pointer to the subtitles list tallocated
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* @param nsub pointer to the number of subtitles
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* @param path Look for subtitles in this directory
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* @param fname Subtitle filename (pattern)
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* @param limit_fuzziness Ignore flag when sub_fuziness == 2
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*/
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static void append_dir_subtitles(struct MPOpts *opts,
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struct subfn **slist, int *nsub,
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struct bstr path, const char *fname,
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int limit_fuzziness)
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{
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char *sub_exts[] = {"utf", "utf8", "utf-8", "sub", "srt", "smi", "rt", "txt", "ssa", "aqt", "jss", "js", "ass", NULL};
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void *tmpmem = talloc_new(NULL);
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FILE *f;
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assert(strlen(fname) < 1e6);
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struct bstr f_fname = bstr0(mp_basename(fname));
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struct bstr f_fname_noext = bstrdup(tmpmem, strip_ext(f_fname));
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bstr_lower(f_fname_noext);
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struct bstr f_fname_trim = bstr_strip(f_fname_noext);
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// 0 = nothing
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// 1 = any subtitle file
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// 2 = any sub file containing movie name
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// 3 = sub file containing movie name and the lang extension
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char *path0 = bstrdup0(tmpmem, path);
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DIR *d = opendir(path0);
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if (!d)
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goto out;
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mp_msg(MSGT_SUBREADER, MSGL_V, "Load subtitles in %.*s\n", BSTR_P(path));
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struct dirent *de;
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while ((de = readdir(d))) {
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struct bstr dename = bstr0(de->d_name);
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void *tmpmem2 = talloc_new(tmpmem);
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// retrieve various parts of the filename
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struct bstr tmp_fname_noext = bstrdup(tmpmem2, strip_ext(dename));
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bstr_lower(tmp_fname_noext);
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struct bstr tmp_fname_ext = get_ext(dename);
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struct bstr tmp_fname_trim = bstr_strip(tmp_fname_noext);
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// If it's a .sub, check if there is a .idx with the same name. If
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// there is one, it's certainly a vobsub so we skip it.
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if (bstrcasecmp(tmp_fname_ext, bstr0("sub")) == 0) {
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char *idxname = talloc_asprintf(tmpmem2, "%.*s.idx",
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(int)tmp_fname_noext.len,
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de->d_name);
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char *idx = mp_path_join(tmpmem2, path, bstr0(idxname));
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f = fopen(idx, "rt");
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if (f) {
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fclose(f);
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goto next_sub;
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}
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}
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// does it end with a subtitle extension?
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#ifdef CONFIG_ICONV
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#ifdef CONFIG_ENCA
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int i = (sub_cp && strncasecmp(sub_cp, "enca", 4) != 0) ? 3 : 0;
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#else
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int i = sub_cp ? 3 : 0;
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#endif
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#else
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int i = 0;
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#endif
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while (1) {
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if (!sub_exts[i])
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goto next_sub;
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if (bstrcasecmp(bstr0(sub_exts[i]), tmp_fname_ext) == 0)
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break;
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i++;
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}
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// we have a (likely) subtitle file
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int prio = 0;
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if (opts->sub_lang) {
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if (bstr_startswith(tmp_fname_trim, f_fname_trim)) {
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struct bstr lang = guess_lang_from_filename(tmp_fname_trim);
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if (lang.len) {
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for (int n = 0; opts->sub_lang[n]; n++) {
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if (bstr_startswith(lang,
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bstr0(opts->sub_lang[n]))) {
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prio = 4; // matches the movie name + lang extension
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break;
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}
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}
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}
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}
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}
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if (!prio && bstrcmp(tmp_fname_trim, f_fname_trim) == 0)
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prio = 3; // matches the movie name
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if (!prio && bstr_find(tmp_fname_trim, f_fname_trim) >= 0
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&& sub_match_fuzziness >= 1)
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prio = 2; // contains the movie name
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if (!prio) {
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// doesn't contain the movie name
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// don't try in the mplayer subtitle directory
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if (!limit_fuzziness && sub_match_fuzziness >= 2) {
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prio = 1;
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}
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}
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mp_msg(MSGT_SUBREADER, MSGL_DBG2, "Potential sub file: "
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"\"%s\" Priority: %d\n", de->d_name, prio);
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if (prio) {
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prio += prio;
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#ifdef CONFIG_ICONV
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if (i < 3) // prefer UTF-8 coded
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prio++;
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#endif
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char *subpath = mp_path_join(*slist, path, dename);
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if ((f = fopen(subpath, "rt"))) {
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MP_GROW_ARRAY(*slist, *nsub);
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struct subfn *sub = *slist + (*nsub)++;
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fclose(f);
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sub->priority = prio;
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sub->fname = subpath;
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} else
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talloc_free(subpath);
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}
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next_sub:
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talloc_free(tmpmem2);
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}
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closedir(d);
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out:
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talloc_free(tmpmem);
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}
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char **find_text_subtitles(struct MPOpts *opts, const char *fname)
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{
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char **subnames = NULL;
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struct subfn *slist = talloc_array_ptrtype(NULL, slist, 1);
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int n = 0;
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// Load subtitles from current media directory
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append_dir_subtitles(opts, &slist, &n, mp_dirname(fname), fname, 0);
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// Load subtitles in dirs specified by sub-paths option
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if (opts->sub_paths) {
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for (int i = 0; opts->sub_paths[i]; i++) {
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char *path = mp_path_join(slist, mp_dirname(fname),
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bstr0(opts->sub_paths[i]));
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append_dir_subtitles(opts, &slist, &n, bstr0(path), fname, 0);
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}
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}
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// Load subtitles in ~/.mplayer/sub limiting sub fuzziness
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char *mp_subdir = get_path("sub/");
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if (mp_subdir)
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append_dir_subtitles(opts, &slist, &n, bstr0(mp_subdir), fname, 1);
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free(mp_subdir);
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// Sort subs by priority and append them
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qsort(slist, n, sizeof(*slist), compare_sub_priority);
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subnames = talloc_array_ptrtype(NULL, subnames, n);
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for (int i = 0; i < n; i++)
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subnames[i] = talloc_strdup(subnames, slist[i].fname);
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talloc_free(slist);
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return subnames;
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}
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char **find_vob_subtitles(struct MPOpts *opts, const char *fname)
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{
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char **vobs = talloc_array_ptrtype(NULL, vobs, 1);
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int n = 0;
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// Potential vobsub in the media directory
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struct bstr bname = bstr0(mp_basename(fname));
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int pdot = bstrrchr(bname, '.');
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if (pdot >= 0)
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bname.len = pdot;
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vobs[n++] = mp_path_join(vobs, mp_dirname(fname), bname);
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// Potential vobsubs in directories specified by sub-paths option
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if (opts->sub_paths) {
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for (int i = 0; opts->sub_paths[i]; i++) {
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char *path = mp_path_join(NULL, mp_dirname(fname),
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bstr0(opts->sub_paths[i]));
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MP_GROW_ARRAY(vobs, n);
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vobs[n++] = mp_path_join(vobs, bstr0(path), bname);
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talloc_free(path);
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}
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}
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// Potential vobsub in ~/.mplayer/sub
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char *mp_subdir = get_path("sub/");
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if (mp_subdir) {
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MP_GROW_ARRAY(vobs, n);
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vobs[n++] = mp_path_join(vobs, bstr0(mp_subdir), bname);
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}
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free(mp_subdir);
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MP_RESIZE_ARRAY(NULL, vobs, n);
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return vobs;
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}
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