mirror of https://github.com/mpv-player/mpv
232 lines
7.5 KiB
C
232 lines
7.5 KiB
C
/*
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* This file is part of mpv.
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*
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* Get path to config dir/file.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <errno.h>
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#include "config.h"
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#include "misc/path_utils.h"
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#include "common/common.h"
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#include "common/global.h"
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#include "common/msg.h"
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#include "options/options.h"
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#include "options/path.h"
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#include "mpv_talloc.h"
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#include "osdep/io.h"
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#include "osdep/path.h"
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#include "misc/ctype.h"
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// In order of decreasing priority: the first has highest priority.
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static const mp_get_platform_path_cb path_resolvers[] = {
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#if HAVE_COCOA
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mp_get_platform_path_mac,
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#endif
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#if HAVE_DARWIN
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mp_get_platform_path_darwin,
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#elif !defined(_WIN32) || defined(__CYGWIN__)
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mp_get_platform_path_unix,
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#endif
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#if HAVE_UWP
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mp_get_platform_path_uwp,
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#elif defined(_WIN32)
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mp_get_platform_path_win,
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#endif
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};
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// from highest (most preferred) to lowest priority
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static const char *const config_dirs[] = {
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"home",
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"old_home",
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"osxbundle",
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"exe_dir",
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"global",
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};
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// Return a platform specific path using a path type as defined in osdep/path.h.
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// Keep in mind that the only way to free the return value is freeing talloc_ctx
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// (or its children), as this function can return a statically allocated string.
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static const char *mp_get_platform_path(void *talloc_ctx,
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struct mpv_global *global,
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const char *type)
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{
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assert(talloc_ctx);
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if (global->configdir) {
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// Return NULL for all platform paths if --no-config is passed
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if (!global->configdir[0])
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return NULL;
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// force all others to NULL, only first returns the path
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for (int n = 0; n < MP_ARRAY_SIZE(config_dirs); n++) {
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if (strcmp(config_dirs[n], type) == 0)
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return (n == 0) ? global->configdir : NULL;
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}
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}
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// Return the native config path if the platform doesn't support the
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// type we are trying to fetch.
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const char *fallback_type = NULL;
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if (!strcmp(type, "cache") || !strcmp(type, "state"))
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fallback_type = "home";
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for (int n = 0; n < MP_ARRAY_SIZE(path_resolvers); n++) {
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const char *path = path_resolvers[n](talloc_ctx, type);
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if (path && path[0])
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return path;
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}
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if (fallback_type) {
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assert(strcmp(fallback_type, type) != 0);
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return mp_get_platform_path(talloc_ctx, global, fallback_type);
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}
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return NULL;
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}
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void mp_init_paths(struct mpv_global *global, struct MPOpts *opts)
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{
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TA_FREEP(&global->configdir);
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const char *force_configdir = getenv("MPV_HOME");
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if (opts->force_configdir && opts->force_configdir[0])
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force_configdir = opts->force_configdir;
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if (!opts->load_config)
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force_configdir = "";
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global->configdir = talloc_strdup(global, force_configdir);
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}
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char *mp_find_user_file(void *talloc_ctx, struct mpv_global *global,
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const char *type, const char *filename)
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{
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void *tmp = talloc_new(NULL);
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char *res = (char *)mp_get_platform_path(tmp, global, type);
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if (res)
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res = mp_path_join(talloc_ctx, res, filename);
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talloc_free(tmp);
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MP_DBG(global, "%s path: '%s' -> '%s'\n", type, filename, res ? res : "-");
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return res;
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}
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static char **mp_find_all_config_files_limited(void *talloc_ctx,
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struct mpv_global *global,
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int max_files,
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const char *filename)
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{
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char **ret = talloc_array(talloc_ctx, char*, 2); // 2 preallocated
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int num_ret = 0;
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for (int i = 0; i < MP_ARRAY_SIZE(config_dirs); i++) {
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const char *dir = mp_get_platform_path(ret, global, config_dirs[i]);
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bstr s = bstr0(filename);
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while (dir && num_ret < max_files && s.len) {
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bstr fn;
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bstr_split_tok(s, "|", &fn, &s);
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char *file = mp_path_join_bstr(ret, bstr0(dir), fn);
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if (mp_path_exists(file)) {
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MP_DBG(global, "config path: '%.*s' -> '%s'\n",
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BSTR_P(fn), file);
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MP_TARRAY_APPEND(NULL, ret, num_ret, file);
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} else {
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MP_DBG(global, "config path: '%.*s' -/-> '%s'\n",
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BSTR_P(fn), file);
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}
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}
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}
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MP_TARRAY_GROW(NULL, ret, num_ret);
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ret[num_ret] = NULL;
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for (int n = 0; n < num_ret / 2; n++)
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MPSWAP(char*, ret[n], ret[num_ret - n - 1]);
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return ret;
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}
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char **mp_find_all_config_files(void *talloc_ctx, struct mpv_global *global,
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const char *filename)
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{
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return mp_find_all_config_files_limited(talloc_ctx, global, 64, filename);
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}
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char *mp_find_config_file(void *talloc_ctx, struct mpv_global *global,
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const char *filename)
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{
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char **l = mp_find_all_config_files_limited(talloc_ctx, global, 1, filename);
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char *r = l && l[0] ? talloc_steal(talloc_ctx, l[0]) : NULL;
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talloc_free(l);
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return r;
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}
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char *mp_get_user_path(void *talloc_ctx, struct mpv_global *global,
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const char *path)
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{
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if (!path)
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return NULL;
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char *res = NULL;
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bstr bpath = bstr0(path);
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if (bstr_eatstart0(&bpath, "~")) {
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// parse to "~" <prefix> "/" <rest>
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bstr prefix, rest;
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if (bstr_split_tok(bpath, "/", &prefix, &rest)) {
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const char *rest0 = rest.start; // ok in this case
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if (bstr_equals0(prefix, "~")) {
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res = mp_find_config_file(talloc_ctx, global, rest0);
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if (!res) {
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void *tmp = talloc_new(NULL);
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const char *p = mp_get_platform_path(tmp, global, "home");
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res = mp_path_join_bstr(talloc_ctx, bstr0(p), rest);
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talloc_free(tmp);
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}
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} else if (bstr_equals0(prefix, "")) {
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char *home = getenv("HOME");
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if (!home)
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home = getenv("USERPROFILE");
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res = mp_path_join_bstr(talloc_ctx, bstr0(home), rest);
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} else if (bstr_eatstart0(&prefix, "~")) {
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void *tmp = talloc_new(NULL);
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char type[80];
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snprintf(type, sizeof(type), "%.*s", BSTR_P(prefix));
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const char *p = mp_get_platform_path(tmp, global, type);
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res = mp_path_join_bstr(talloc_ctx, bstr0(p), rest);
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talloc_free(tmp);
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}
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}
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}
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if (!res)
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res = talloc_strdup(talloc_ctx, path);
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MP_DBG(global, "user path: '%s' -> '%s'\n", path, res);
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return res;
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}
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void mp_mk_user_dir(struct mpv_global *global, const char *type, char *subdir)
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{
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char *dir = mp_find_user_file(NULL, global, type, subdir);
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if (dir)
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mp_mkdirp(dir);
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talloc_free(dir);
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}
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