gstreamer/gst/glib-compat.c

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/*
* glib-compat.c
* Functions copied from glib 2.6 and 2.8
*
* Copyright 2005 David Schleef <ds@schleef.org>
*/
/* gfileutils.c - File utility functions
*
* Copyright 2000 Red Hat, Inc.
*
* GLib is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* GLib 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with GLib; see the file COPYING.LIB. If not,
* write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <glib.h>
#if GLIB_CHECK_VERSION (2, 6, 0)
#include <glib/gstdio.h>
#endif
#include <stdio.h>
#include <errno.h>
#include "glib-compat.h"
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#if 0
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#ifndef G_OS_WIN32
#include <sys/wait.h>
#endif
#include <fcntl.h>
#endif
#ifdef G_OS_WIN32
#include <windows.h>
#include <io.h>
#endif /* G_OS_WIN32 */
#ifdef G_OS_WIN32
#define G_DIR_SEPARATOR '\\'
#define G_DIR_SEPARATOR_S "\\"
#define G_IS_DIR_SEPARATOR(c) ((c) == G_DIR_SEPARATOR || (c) == '/')
#define G_SEARCHPATH_SEPARATOR ';'
#define G_SEARCHPATH_SEPARATOR_S ";"
#else
#define G_DIR_SEPARATOR '/'
#define G_DIR_SEPARATOR_S "/"
#define G_IS_DIR_SEPARATOR(c) ((c) == G_DIR_SEPARATOR)
#define G_SEARCHPATH_SEPARATOR ':'
#define G_SEARCHPATH_SEPARATOR_S ":"
#endif
#if !GLIB_CHECK_VERSION (2, 8, 0)
/**
* g_mkdir_with_parents:
* @pathname: a pathname in the GLib file name encoding
* @mode: permissions to use for newly created directories
*
* Create a directory if it doesn't already exist. Create intermediate
* parent directories as needed, too.
*
* Returns: 0 if the directory already exists, or was successfully
* created. Returns -1 if an error occurred, with errno set.
*
* Since: 2.8
*/
int
g_mkdir_with_parents (const gchar * pathname, int mode)
{
gchar *fn, *p;
if (pathname == NULL || *pathname == '\0') {
errno = EINVAL;
return -1;
}
fn = g_strdup (pathname);
if (g_path_is_absolute (fn))
p = (gchar *) g_path_skip_root (fn);
else
p = fn;
do {
while (*p && !G_IS_DIR_SEPARATOR (*p))
p++;
if (!*p)
p = NULL;
else
*p = '\0';
if (!g_file_test (fn, G_FILE_TEST_EXISTS)) {
if (g_mkdir (fn, mode) == -1) {
int errno_save = errno;
g_free (fn);
errno = errno_save;
return -1;
}
} else if (!g_file_test (fn, G_FILE_TEST_IS_DIR)) {
g_free (fn);
errno = ENOTDIR;
return -1;
}
if (p) {
*p++ = G_DIR_SEPARATOR;
while (*p && G_IS_DIR_SEPARATOR (*p))
p++;
}
}
while (p);
g_free (fn);
return 0;
}
#endif
#if !GLIB_CHECK_VERSION (2, 6, 0)
/**
* g_mkdir:
* @filename: a pathname in the GLib file name encoding (UTF-8 on Windows)
* @mode: permissions to use for the newly created directory
*
* A wrapper for the POSIX mkdir() function. The mkdir() function
* attempts to create a directory with the given name and permissions.
*
* See the C library manual for more details about mkdir().
*
* Returns: 0 if the directory was successfully created, -1 if an error
* occurred
*
* Since: 2.6
*/
int
g_mkdir (const gchar * filename, int mode)
{
#ifdef G_OS_WIN32
if (G_WIN32_HAVE_WIDECHAR_API ()) {
wchar_t *wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
int retval;
int save_errno;
if (wfilename == NULL) {
errno = EINVAL;
return -1;
}
retval = _wmkdir (wfilename);
save_errno = errno;
g_free (wfilename);
errno = save_errno;
return retval;
} else {
gchar *cp_filename = g_locale_from_utf8 (filename, -1, NULL, NULL, NULL);
int retval;
int save_errno;
if (cp_filename == NULL) {
errno = EINVAL;
return -1;
}
retval = mkdir (cp_filename);
save_errno = errno;
g_free (cp_filename);
errno = save_errno;
return retval;
}
#else
return mkdir (filename, mode);
#endif
}
#endif
#if !GLIB_CHECK_VERSION (2, 6, 0)
/**
* g_stat:
* @filename: a pathname in the GLib file name encoding (UTF-8 on Windows)
* @buf: a pointer to a <structname>stat</structname> struct, which
* will be filled with the file information
*
* A wrapper for the POSIX stat() function. The stat() function
* returns information about a file.
*
* See the C library manual for more details about stat().
*
* Returns: 0 if the information was successfully retrieved, -1 if an error
* occurred
*
* Since: 2.6
*/
int
g_stat (const gchar * filename, struct stat *buf)
{
#ifdef G_OS_WIN32
if (G_WIN32_HAVE_WIDECHAR_API ()) {
wchar_t *wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
int retval;
int save_errno;
if (wfilename == NULL) {
errno = EINVAL;
return -1;
}
retval = _wstat (wfilename, (struct _stat *) buf);
save_errno = errno;
g_free (wfilename);
errno = save_errno;
return retval;
} else {
gchar *cp_filename = g_locale_from_utf8 (filename, -1, NULL, NULL, NULL);
int retval;
int save_errno;
if (cp_filename == NULL) {
errno = EINVAL;
return -1;
}
retval = stat (cp_filename, buf);
save_errno = errno;
g_free (cp_filename);
errno = save_errno;
return retval;
}
#else
return stat (filename, buf);
#endif
}
#endif
/* This version is copied from GLib 2.8.
* In GLib 2.6, it didn't check for a flag value being NULL, hence it
* hits an infinite loop in our flags serialize function
*/
GFlagsValue *
gst_flags_get_first_value (GFlagsClass * flags_class, guint value)
{
g_return_val_if_fail (G_IS_FLAGS_CLASS (flags_class), NULL);
if (flags_class->n_values) {
GFlagsValue *flags_value;
if (value == 0) {
for (flags_value = flags_class->values; flags_value->value_name;
flags_value++)
if (flags_value->value == 0)
return flags_value;
} else {
for (flags_value = flags_class->values; flags_value->value_name;
flags_value++)
if (flags_value->value != 0
&& (flags_value->value & value) == flags_value->value)
return flags_value;
}
}
return NULL;
}