core: move contents to mpvcore (1/2)

core is used in many unix systems for core dumps. For that reason some tools
work under the assumption that the file is indeed a core dump (for example
autoconf does this).

This commit just renames the files. The following one will change all the
includes to fix compilation. This is done this way because git has a easier
time tracing file changes if there is a pure rename commit.

1 files changed, 229 insertions, 0 deletions

diff --git a/mpvcore/path.c b/mpvcore/path.c
new file mode 100644
index 0000000000..50350be18c
--- /dev/null
+++ b/mpvcore/path.c
@@ -0,0 +1,229 @@
+/*
+ * 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 "core/mp_msg.h"
+#include "core/path.h"
+#include "talloc.h"
+#include "osdep/io.h"
+
+#if defined(__MINGW32__)
+#include <windows.h>
+#elif defined(__CYGWIN__)
+#include <windows.h>
+#include <sys/cygwin.h>
+#endif
+
+#ifdef CONFIG_MACOSX_BUNDLE
+#include "osdep/macosx_bundle.h"
+#endif
+
+
+typedef char *(*lookup_fun)(const char *);
+static const lookup_fun config_lookup_functions[] = {
+    mp_find_user_config_file,
+#ifdef CONFIG_MACOSX_BUNDLE
+    get_bundled_path,
+#endif
+    mp_find_global_config_file,
+    NULL
+};
+
+char *mp_find_config_file(const char *filename)
+{
+    for (int i = 0; config_lookup_functions[i] != NULL; i++) {
+        char *path = config_lookup_functions[i](filename);
+        if (!path) continue;
+
+        if (mp_path_exists(path))
+            return path;
+
+        talloc_free(path);
+    }
+    return NULL;
+}
+
+char *mp_find_user_config_file(const char *filename)
+{
+    char *homedir = NULL, *buff = NULL;
+#ifdef __MINGW32__
+    static char *config_dir = "mpv";
+#else
+    static char *config_dir = ".mpv";
+#endif
+#if defined(__MINGW32__) || defined(__CYGWIN__)
+    char *temp = NULL;
+    char exedir[260];
+    /* Hack to get fonts etc. loaded outside of Cygwin environment. */
+    int i, imax = 0;
+    int len = (int)GetModuleFileNameA(NULL, exedir, 260);
+    for (i = 0; i < len; i++)
+        if (exedir[i] == '\\') {
+            exedir[i] = '/';
+            imax = i;
+        }
+    exedir[imax] = '\0';
+
+    if (filename)
+        temp = mp_path_join(NULL, bstr0(exedir), bstr0(filename));
+
+    if (temp && mp_path_exists(temp) && !mp_path_isdir(temp)) {
+        homedir = exedir;
+        config_dir = "";
+    }
+    else
+#endif
+    if ((homedir = getenv("MPV_HOME")) != NULL) {
+        config_dir = "";
+    } else if ((homedir = getenv("HOME")) == NULL) {
+#if defined(__MINGW32__) || defined(__CYGWIN__)
+        homedir = exedir;
+#else
+        return NULL;
+#endif
+    }
+#if defined(__MINGW32__) || defined(__CYGWIN__)
+    talloc_free(temp);
+#endif
+
+    if (filename) {
+        char * temp = mp_path_join(NULL, bstr0(homedir), bstr0(config_dir));
+        buff = mp_path_join(NULL, bstr0(temp), bstr0(filename));
+        talloc_free(temp);
+    } else {
+        buff = mp_path_join(NULL, bstr0(homedir), bstr0(config_dir));
+    }
+
+    mp_msg(MSGT_GLOBAL, MSGL_V, "get_path('%s') -> '%s'\n", filename, buff);
+    return buff;
+}
+
+char *mp_find_global_config_file(const char *filename)
+{
+    if (filename) {
+        return mp_path_join(NULL, bstr0(MPLAYER_CONFDIR), bstr0(filename));
+    } else {
+        return talloc_strdup(NULL, MPLAYER_CONFDIR);
+    }
+}
+
+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 = path + strlen(path);
+    if (root)
+        *root = (bstr){.start = (char *)path, .len = path - split};
+    return (char *)split;
+}
+
+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 mp_stat(path, &st) == 0;
+}
+
+bool mp_path_isdir(const char *path)
+{
+    struct stat st;
+    return mp_stat(path, &st) == 0 && S_ISDIR(st.st_mode);
+}