player: rename and move find_subfiles.c

This was in sub/, because the code used to be specific to subtitles. It
was extended to automatically load external audio files too, and moving
the file and renaming it was long overdue.

2 files changed, 0 insertions, 319 deletions

diff --git a/sub/find_subfiles.c b/sub/find_subfiles.c
deleted file mode 100644
index 8b01a8b0ae..0000000000
--- a/sub/find_subfiles.c
+++ /dev/null
@@ -1,284 +0,0 @@
-#include <dirent.h>
-#include <string.h>
-#include <strings.h>
-#include <stdlib.h>
-#include <assert.h>
-
-#include "osdep/io.h"
-
-#include "common/common.h"
-#include "common/global.h"
-#include "common/msg.h"
-#include "misc/ctype.h"
-#include "options/options.h"
-#include "options/path.h"
-#include "sub/find_subfiles.h"
-
-static const char *const sub_exts[] = {"utf", "utf8", "utf-8", "idx", "sub", "srt",
-                                       "smi", "rt", "txt", "ssa", "aqt", "jss",
-                                       "js", "ass", "mks", "vtt", "sup", NULL};
-
-static const char *const audio_exts[] = {"mp3", "aac", "mka", "dts", "flac",
-                                         "ogg", "m4a", "ac3", "opus", NULL};
-
-static bool test_ext_list(bstr ext, const char *const *list)
-{
-    for (int n = 0; list[n]; n++) {
-        if (bstrcasecmp(bstr0(list[n]), ext) == 0)
-            return true;
-    }
-    return false;
-}
-
-static int test_ext(bstr ext)
-{
-    if (test_ext_list(ext, sub_exts))
-        return STREAM_SUB;
-    if (test_ext_list(ext, audio_exts))
-        return STREAM_AUDIO;
-    return -1;
-}
-
-static struct bstr strip_ext(struct bstr str)
-{
-    int dotpos = bstrrchr(str, '.');
-    if (dotpos < 0)
-        return str;
-    return (struct bstr){str.start, dotpos};
-}
-
-static struct bstr get_ext(struct bstr s)
-{
-    int dotpos = bstrrchr(s, '.');
-    if (dotpos < 0)
-        return (struct bstr){NULL, 0};
-    return bstr_splice(s, dotpos + 1, s.len);
-}
-
-bool mp_might_be_subtitle_file(const char *filename)
-{
-    return test_ext(get_ext(bstr0(filename))) == STREAM_SUB;
-}
-
-static int compare_sub_filename(const void *a, const void *b)
-{
-    const struct subfn *s1 = a;
-    const struct subfn *s2 = b;
-    return strcoll(s1->fname, s2->fname);
-}
-
-static int compare_sub_priority(const void *a, const void *b)
-{
-    const struct subfn *s1 = a;
-    const struct subfn *s2 = b;
-    if (s1->priority > s2->priority)
-        return -1;
-    if (s1->priority < s2->priority)
-        return 1;
-    return strcoll(s1->fname, s2->fname);
-}
-
-static struct bstr guess_lang_from_filename(struct bstr name)
-{
-    if (name.len < 2)
-        return (struct bstr){NULL, 0};
-
-    int n = 0;
-    int i = name.len - 1;
-
-    if (name.start[i] == ')' || name.start[i] == ']')
-        i--;
-    while (i >= 0 && mp_isalpha(name.start[i])) {
-        n++;
-        if (n > 3)
-            return (struct bstr){NULL, 0};
-        i--;
-    }
-    if (n < 2)
-        return (struct bstr){NULL, 0};
-    return (struct bstr){name.start + i + 1, n};
-}
-
-static void append_dir_subtitles(struct mpv_global *global,
-                                 struct subfn **slist, int *nsub,
-                                 struct bstr path, const char *fname,
-                                 int limit_fuzziness)
-{
-    void *tmpmem = talloc_new(NULL);
-    struct MPOpts *opts = global->opts;
-    struct mp_log *log = mp_log_new(tmpmem, global->log, "find_files");
-
-    if (mp_is_url(bstr0(fname)))
-        goto out;
-
-    struct bstr f_fname = bstr0(mp_basename(fname));
-    struct bstr f_fname_noext = bstrdup(tmpmem, strip_ext(f_fname));
-    bstr_lower(f_fname_noext);
-    struct bstr f_fname_trim = bstr_strip(f_fname_noext);
-
-    // 0 = nothing
-    // 1 = any subtitle file
-    // 2 = any sub file containing movie name
-    // 3 = sub file containing movie name and the lang extension
-    char *path0 = bstrdup0(tmpmem, path);
-    DIR *d = opendir(path0);
-    if (!d)
-        goto out;
-    mp_verbose(log, "Loading external files in %.*s\n", BSTR_P(path));
-    struct dirent *de;
-    while ((de = readdir(d))) {
-        struct bstr dename = bstr0(de->d_name);
-        void *tmpmem2 = talloc_new(tmpmem);
-
-        // retrieve various parts of the filename
-        struct bstr tmp_fname_noext = bstrdup(tmpmem2, strip_ext(dename));
-        bstr_lower(tmp_fname_noext);
-        struct bstr tmp_fname_ext = get_ext(dename);
-        struct bstr tmp_fname_trim = bstr_strip(tmp_fname_noext);
-
-        // check what it is (most likely)
-        int type = test_ext(tmp_fname_ext);
-        char **langs = NULL;
-        int fuzz = -1;
-        switch (type) {
-        case STREAM_SUB:
-            langs = opts->stream_lang[type];
-            fuzz = opts->sub_auto;
-            break;
-        case STREAM_AUDIO:
-            langs = opts->stream_lang[type];
-            fuzz = opts->audiofile_auto;
-            break;
-        }
-
-        if (fuzz < 0)
-            goto next_sub;
-
-        // we have a (likely) subtitle file
-        int prio = 0;
-        char *found_lang = NULL;
-        if (langs) {
-            if (bstr_startswith(tmp_fname_trim, f_fname_trim)) {
-                struct bstr lang = guess_lang_from_filename(tmp_fname_trim);
-                if (lang.len) {
-                    for (int n = 0; langs[n]; n++) {
-                        if (bstr_startswith0(lang, langs[n])) {
-                            prio = 4; // matches the movie name + lang extension
-                            found_lang = langs[n];
-                            break;
-                        }
-                    }
-                }
-            }
-        }
-        if (!prio && bstrcmp(tmp_fname_trim, f_fname_trim) == 0)
-            prio = 3; // matches the movie name
-        if (!prio && bstr_find(tmp_fname_trim, f_fname_trim) >= 0 && fuzz >= 1)
-            prio = 2; // contains the movie name
-        if (!prio) {
-            // doesn't contain the movie name
-            // don't try in the mplayer subtitle directory
-            if (!limit_fuzziness && fuzz >= 2) {
-                prio = 1;
-            }
-        }
-
-        mp_dbg(log, "Potential external file: \"%s\"  Priority: %d\n",
-               de->d_name, prio);
-
-        if (prio) {
-            prio += prio;
-            char *subpath = mp_path_join_bstr(*slist, path, dename);
-            if (mp_path_exists(subpath)) {
-                MP_GROW_ARRAY(*slist, *nsub);
-                struct subfn *sub = *slist + (*nsub)++;
-
-                // annoying and redundant
-                if (strncmp(subpath, "./", 2) == 0)
-                    subpath += 2;
-
-                sub->type     = type;
-                sub->priority = prio;
-                sub->fname    = subpath;
-                sub->lang     = found_lang;
-            } else
-                talloc_free(subpath);
-        }
-
-    next_sub:
-        talloc_free(tmpmem2);
-    }
-    closedir(d);
-
- out:
-    talloc_free(tmpmem);
-}
-
-static bool case_endswith(const char *s, const char *end)
-{
-    size_t len = strlen(s);
-    size_t elen = strlen(end);
-    return len >= elen && strcasecmp(s + len - elen, end) == 0;
-}
-
-// Drop .sub file if .idx file exists.
-// Assumes slist is sorted by compare_sub_filename.
-static void filter_subidx(struct subfn **slist, int *nsub)
-{
-    const char *prev = NULL;
-    for (int n = 0; n < *nsub; n++) {
-        const char *fname = (*slist)[n].fname;
-        if (case_endswith(fname, ".idx")) {
-            prev = fname;
-        } else if (case_endswith(fname, ".sub")) {
-            if (prev && strncmp(prev, fname, strlen(fname) - 4) == 0)
-                (*slist)[n].priority = -1;
-        }
-    }
-    for (int n = *nsub - 1; n >= 0; n--) {
-        if ((*slist)[n].priority < 0)
-            MP_TARRAY_REMOVE_AT(*slist, *nsub, n);
-    }
-}
-
-// Return a list of subtitles and audio files found, sorted by priority.
-// Last element is terminated with a fname==NULL entry.
-struct subfn *find_external_files(struct mpv_global *global, const char *fname)
-{
-    struct MPOpts *opts = global->opts;
-    struct subfn *slist = talloc_array_ptrtype(NULL, slist, 1);
-    int n = 0;
-
-    // Load subtitles from current media directory
-    append_dir_subtitles(global, &slist, &n, mp_dirname(fname), fname, 0);
-
-    if (opts->sub_auto >= 0) {
-        // Load subtitles in dirs specified by sub-paths option
-        if (opts->sub_paths) {
-            for (int i = 0; opts->sub_paths[i]; i++) {
-                char *path = mp_path_join_bstr(slist, mp_dirname(fname),
-                                               bstr0(opts->sub_paths[i]));
-                append_dir_subtitles(global, &slist, &n, bstr0(path), fname, 0);
-            }
-        }
-
-        // Load subtitles in ~/.mpv/sub limiting sub fuzziness
-        char *mp_subdir = mp_find_config_file(NULL, global, "sub/");
-        if (mp_subdir)
-            append_dir_subtitles(global, &slist, &n, bstr0(mp_subdir), fname, 1);
-        talloc_free(mp_subdir);
-    }
-
-    // Sort by name for filter_subidx()
-    qsort(slist, n, sizeof(*slist), compare_sub_filename);
-
-    filter_subidx(&slist, &n);
-
-    // Sort subs by priority and append them
-    qsort(slist, n, sizeof(*slist), compare_sub_priority);
-
-    struct subfn z = {0};
-    MP_TARRAY_APPEND(NULL, slist, n, z);
-
-    return slist;
-}
diff --git a/sub/find_subfiles.h b/sub/find_subfiles.h
deleted file mode 100644
index 223bf06e86..0000000000
--- a/sub/find_subfiles.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * This file is part of mpv.
- *
- * mpv 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.
- *
- * mpv 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 mpv.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef MPLAYER_FIND_SUBFILES_H
-#define MPLAYER_FIND_SUBFILES_H
-
-#include <stdbool.h>
-
-struct subfn {
-    int type; // STREAM_SUB/STREAM_AUDIO
-    int priority;
-    char *fname;
-    char *lang;
-};
-
-struct mpv_global;
-struct subfn *find_external_files(struct mpv_global *global, const char *fname);
-
-bool mp_might_be_subtitle_file(const char *filename);
-
-#endif /* MPLAYER_FINDFILES_H */