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mirror of https://github.com/mpv-player/mpv synced 2024-12-25 08:12:17 +00:00
mpv/options/path.c
wm4 201a656350 win32: get rid of mp_stat in the normal source code
mp_stat() instead of stat() was used in the normal code (i.e. even
on Unix), because MinGW-w64 has an unbelievable macro-mess in place,
which prevents solving this elegantly.

Add some dirty workarounds to hide mp_stat() from the normal code
properly. This now requires replacing all functions that use the
struct stat type. This includes fstat, lstat, fstatat, and possibly
others. (mpv currently uses stat and fstat only.)
2014-10-17 22:15:19 +02:00

341 lines
8.8 KiB
C

/*
* Get path to config dir/file.
*
* Return Values:
* Returns the pointer to the ALLOCATED buffer containing the
* zero terminated path string. This buffer has to be FREED
* by the caller.
*
* 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 <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include "config.h"
#include "common/common.h"
#include "common/global.h"
#include "common/msg.h"
#include "options/options.h"
#include "options/path.h"
#include "talloc.h"
#include "osdep/io.h"
#include "osdep/path.h"
static int mp_add_xdg_config_dirs(struct mpv_global *global, char **dirs, int i)
{
void *talloc_ctx = dirs;
char *home = getenv("HOME");
char *tmp = NULL;
char *xdg_home = NULL;
tmp = getenv("XDG_CONFIG_HOME");
if (tmp && *tmp)
xdg_home = talloc_asprintf(talloc_ctx, "%s/mpv", tmp);
else if (home && *home)
xdg_home = talloc_asprintf(talloc_ctx, "%s/.config/mpv", home);
// Maintain compatibility with old ~/.mpv
char *old_home = NULL;
if (home && *home)
old_home = talloc_asprintf(talloc_ctx, "%s/.mpv", home);
// If the old ~/.mpv exists, and the XDG config dir doesn't, use the old
// config dir only.
if (mp_path_exists(xdg_home) || !mp_path_exists(old_home))
dirs[i++] = xdg_home;
dirs[i++] = old_home;
#if HAVE_COCOA
i = mp_add_macosx_bundle_dir(global, dirs, i);
#endif
dirs[i++] = MPLAYER_CONFDIR;
return i;
}
// Return NULL-terminated array of config directories, from highest to lowest
// priority
static char **mp_config_dirs(void *talloc_ctx, struct mpv_global *global)
{
struct MPOpts *opts = global->opts;
char **ret = talloc_zero_array(talloc_ctx, char*, MAX_CONFIG_PATHS);
if (!opts->load_config)
return ret;
if (opts->force_configdir && opts->force_configdir[0]) {
ret[0] = talloc_strdup(ret, opts->force_configdir);
return ret;
}
const char *tmp = NULL;
int i = 0;
tmp = getenv("MPV_HOME");
if (tmp && *tmp)
ret[i++] = talloc_strdup(ret, tmp);
#if defined(_WIN32) && !defined(__CYGWIN__)
i = mp_add_win_config_dirs(global, ret, i);
#else
i = mp_add_xdg_config_dirs(global, ret, i);
#endif
MP_VERBOSE(global, "search dirs:");
for (char **c = ret; *c; c++)
MP_VERBOSE(global, " %s", *c);
MP_VERBOSE(global, "\n");
return ret;
}
char *mp_find_config_file(void *talloc_ctx, struct mpv_global *global,
const char *filename)
{
char *res = NULL;
char **dirs = mp_config_dirs(NULL, global);
for (int i = 0; dirs && dirs[i]; i++) {
char *file = talloc_asprintf(talloc_ctx, "%s/%s", dirs[i], filename);
if (mp_path_exists(file)) {
res = file;
break;
}
talloc_free(file);
}
talloc_free(dirs);
MP_VERBOSE(global, "config path: '%s' -> '%s'\n", filename,
res ? res : "(NULL)");
return res;
}
char **mp_find_all_config_files(void *talloc_ctx, struct mpv_global *global,
const char *filename)
{
char **ret = talloc_zero_array(talloc_ctx, char*, MAX_CONFIG_PATHS + 1);
int num_ret = 0;
char **dirs = mp_config_dirs(NULL, global);
for (int i = 0; dirs && dirs[i]; i++) {
char *file = talloc_asprintf(ret, "%s/%s", dirs[i], filename);
if (!mp_path_exists(file) || num_ret >= MAX_CONFIG_PATHS)
continue;
ret[num_ret++] = file;
}
talloc_free(dirs);
for (int n = 0; n < num_ret / 2; n++)
MPSWAP(char*, ret[n], ret[num_ret - n - 1]);
MP_VERBOSE(global, "config file: '%s'\n", filename);
for (char** c = ret; *c; c++)
MP_VERBOSE(global, " -> '%s'\n", *c);
return ret;
}
char *mp_get_user_path(void *talloc_ctx, struct mpv_global *global,
const char *path)
{
if (!path)
return NULL;
char *res = NULL;
bstr bpath = bstr0(path);
if (bstr_eatstart0(&bpath, "~")) {
// parse to "~" <prefix> "/" <rest>
bstr prefix, rest;
if (bstr_split_tok(bpath, "/", &prefix, &rest)) {
const char *rest0 = rest.start; // ok in this case
if (bstr_equals0(prefix, "~")) {
res = mp_find_config_file(talloc_ctx, global, rest0);
} else if (bstr_equals0(prefix, "")) {
res = mp_path_join(talloc_ctx, bstr0(getenv("HOME")), rest);
}
}
}
if (!res)
res = talloc_strdup(talloc_ctx, path);
MP_VERBOSE(global, "user path: '%s' -> '%s'\n", path, res);
return res;
}
char *mp_basename(const char *path)
{
char *s;
#if HAVE_DOS_PATHS
s = strrchr(path, '\\');
if (s)
path = s + 1;
s = strrchr(path, ':');
if (s)
path = s + 1;
#endif
s = strrchr(path, '/');
return s ? s + 1 : (char *)path;
}
struct bstr mp_dirname(const char *path)
{
struct bstr ret = {
(uint8_t *)path, mp_basename(path) - path
};
if (ret.len == 0)
return bstr0(".");
return ret;
}
char *mp_splitext(const char *path, bstr *root)
{
assert(path);
const char *split = strrchr(path, '.');
if (!split || !split[1] || strchr(split, '/'))
return NULL;
if (root)
*root = (bstr){(char *)path, split - path};
return (char *)split + 1;
}
char *mp_path_join(void *talloc_ctx, struct bstr p1, struct bstr p2)
{
if (p1.len == 0)
return bstrdup0(talloc_ctx, p2);
if (p2.len == 0)
return bstrdup0(talloc_ctx, p1);
#if HAVE_DOS_PATHS
if (p2.len >= 2 && p2.start[1] == ':'
|| p2.start[0] == '\\' || p2.start[0] == '/')
#else
if (p2.start[0] == '/')
#endif
return bstrdup0(talloc_ctx, p2); // absolute path
bool have_separator;
int endchar1 = p1.start[p1.len - 1];
#if HAVE_DOS_PATHS
have_separator = endchar1 == '/' || endchar1 == '\\'
|| p1.len == 2 && endchar1 == ':'; // "X:" only
#else
have_separator = endchar1 == '/';
#endif
return talloc_asprintf(talloc_ctx, "%.*s%s%.*s", BSTR_P(p1),
have_separator ? "" : "/", BSTR_P(p2));
}
char *mp_getcwd(void *talloc_ctx)
{
char *wd = talloc_array(talloc_ctx, char, 20);
while (getcwd(wd, talloc_get_size(wd)) == NULL) {
if (errno != ERANGE) {
talloc_free(wd);
return NULL;
}
wd = talloc_realloc(talloc_ctx, wd, char, talloc_get_size(wd) * 2);
}
return wd;
}
bool mp_path_exists(const char *path)
{
struct stat st;
return path && stat(path, &st) == 0;
}
bool mp_path_isdir(const char *path)
{
struct stat st;
return stat(path, &st) == 0 && S_ISDIR(st.st_mode);
}
// Return false if it's considered a normal local filesystem path.
bool mp_is_url(bstr path)
{
int proto = bstr_find0(path, "://");
if (proto < 1)
return false;
// The protocol part must be alphanumeric, otherwise it's not an URL.
for (int i = 0; i < proto; i++) {
unsigned char c = path.start[i];
if (!(c >= 'a' && c <= 'z') && !(c >= 'A' && c <= 'Z') &&
!(c >= '0' && c <= '9') && c != '_')
return false;
}
return true;
}
// Return the protocol part of path, e.g. "http" if path is "http://...".
// On success, out_url (if not NULL) is set to the part after the "://".
bstr mp_split_proto(bstr path, bstr *out_url)
{
if (!mp_is_url(path))
return (bstr){0};
bstr r;
bstr_split_tok(path, "://", &r, out_url ? out_url : &(bstr){0});
return r;
}
void mp_mkdirp(const char *dir)
{
char *path = talloc_strdup(NULL, dir);
char *cdir = path + 1;
while (cdir) {
cdir = strchr(cdir, '/');
if (cdir)
*cdir = 0;
mkdir(path, 0700);
if (cdir)
*cdir++ = '/';
}
talloc_free(path);
}
void mp_mk_config_dir(struct mpv_global *global, char *subdir)
{
void *tmp = talloc_new(NULL);
char *dir = mp_config_dirs(tmp, global)[0];
if (dir) {
dir = talloc_asprintf(tmp, "%s/%s", dir, subdir);
mp_mkdirp(dir);
}
talloc_free(tmp);
}