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glib/gio/gresourcefile.c
Christian Persch b717ef86ad resources: Use g_set_error_literal where appropriate
2012-01-15 13:03:09 +01:00

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/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
*
* This library 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.
*
* This library 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 this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#include "config.h"
#include <string.h>
#include "gresource.h"
#include "gresourcefile.h"
#include "gfileattribute.h"
#include <gfileattribute-priv.h>
#include <gfileinfo-priv.h>
#include "gfile.h"
#include "gseekable.h"
#include "gfileinputstream.h"
#include "gfileinfo.h"
#include "gfileenumerator.h"
#include "gcontenttype.h"
#include "gioerror.h"
#include <glib/gstdio.h>
#include "glibintl.h"
struct _GResourceFile
{
GObject parent_instance;
char *path;
};
struct _GResourceFileEnumerator
{
GFileEnumerator parent;
GFileAttributeMatcher *matcher;
char *path;
char *attributes;
GFileQueryInfoFlags flags;
int index;
char **children;
};
struct _GResourceFileEnumeratorClass
{
GFileEnumeratorClass parent_class;
};
typedef struct _GResourceFileEnumerator GResourceFileEnumerator;
typedef struct _GResourceFileEnumeratorClass GResourceFileEnumeratorClass;
static void g_resource_file_file_iface_init (GFileIface *iface);
static GFileAttributeInfoList *resource_writable_attributes = NULL;
static GFileAttributeInfoList *resource_writable_namespaces = NULL;
#define G_TYPE_RESOURCE_FILE_ENUMERATOR (_g_resource_file_enumerator_get_type ())
#define G_RESOURCE_FILE_ENUMERATOR(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_RESOURCE_FILE_ENUMERATOR, GResourceFileEnumerator))
#define G_RESOURCE_FILE_ENUMERATOR_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_RESOURCE_FILE_ENUMERATOR, GResourceFileEnumeratorClass))
#define G_IS_RESOURCE_FILE_ENUMERATOR(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_RESOURCE_FILE_ENUMERATOR))
#define G_IS_RESOURCE_FILE_ENUMERATOR_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_RESOURCE_FILE_ENUMERATOR))
#define G_RESOURCE_FILE_ENUMERATOR_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_RESOURCE_FILE_ENUMERATOR, GResourceFileEnumeratorClass))
#define G_TYPE_RESOURCE_FILE_INPUT_STREAM (_g_resource_file_input_stream_get_type ())
#define G_RESOURCE_FILE_INPUT_STREAM(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_RESOURCE_FILE_INPUT_STREAM, GResourceFileInputStream))
#define G_RESOURCE_FILE_INPUT_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_RESOURCE_FILE_INPUT_STREAM, GResourceFileInputStreamClass))
#define G_IS_RESOURCE_FILE_INPUT_STREAM(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_RESOURCE_FILE_INPUT_STREAM))
#define G_IS_RESOURCE_FILE_INPUT_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_RESOURCE_FILE_INPUT_STREAM))
#define G_RESOURCE_FILE_INPUT_STREAM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_RESOURCE_FILE_INPUT_STREAM, GResourceFileInputStreamClass))
typedef struct _GResourceFileInputStream GResourceFileInputStream;
typedef struct _GResourceFileInputStreamClass GResourceFileInputStreamClass;
#define g_resource_file_get_type _g_resource_file_get_type
G_DEFINE_TYPE_WITH_CODE (GResourceFile, g_resource_file, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_FILE,
g_resource_file_file_iface_init))
#define g_resource_file_enumerator_get_type _g_resource_file_enumerator_get_type
G_DEFINE_TYPE (GResourceFileEnumerator, g_resource_file_enumerator, G_TYPE_FILE_ENUMERATOR);
static GFileEnumerator *_g_resource_file_enumerator_new (GResourceFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error);
static GType _g_resource_file_input_stream_get_type (void) G_GNUC_CONST;
static GFileInputStream *_g_resource_file_input_stream_new (GInputStream *stream, GFile *file);
static void
g_resource_file_finalize (GObject *object)
{
GResourceFile *resource;
resource = G_RESOURCE_FILE (object);
g_free (resource->path);
G_OBJECT_CLASS (g_resource_file_parent_class)->finalize (object);
}
static void
g_resource_file_class_init (GResourceFileClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = g_resource_file_finalize;
resource_writable_attributes = g_file_attribute_info_list_new ();
resource_writable_namespaces = g_file_attribute_info_list_new ();
}
static void
g_resource_file_init (GResourceFile *resource)
{
}
static char *
canonicalize_filename (const char *filename)
{
char *canon, *start, *p, *q;
/* Skip multiple inital slashes */
while (filename[0] == '/' && filename[1] == '/')
filename++;
if (*filename != '/')
canon = g_strconcat ("/", filename, NULL);
else
canon = g_strdup (filename);
start = canon + 1;
p = start;
while (*p != 0)
{
if (p[0] == '.' && (p[1] == 0 || p[1] == '/'))
{
memmove (p, p+1, strlen (p+1)+1);
}
else if (p[0] == '.' && p[1] == '.' && (p[2] == 0 || p[2] == '/'))
{
q = p + 2;
/* Skip previous separator */
p = p - 2;
if (p < start)
p = start;
while (p > start && *p != '/')
p--;
if (*p == '/')
*p++ = '/';
memmove (p, q, strlen (q)+1);
}
else
{
/* Skip until next separator */
while (*p != 0 && *p != '/')
p++;
if (*p != 0)
{
/* Canonicalize one separator */
*p++ = '/';
}
}
/* Remove additional separators */
q = p;
while (*q && *q == '/')
q++;
if (p != q)
memmove (p, q, strlen (q)+1);
}
/* Remove trailing slashes */
if (p > start && *(p-1) == '/')
*(p-1) = 0;
return canon;
}
static GFile *
g_resource_file_new_for_path (const char *path)
{
GResourceFile *resource = g_object_new (G_TYPE_RESOURCE_FILE, NULL);
resource->path = canonicalize_filename (path);
return G_FILE (resource);
}
GFile *
_g_resource_file_new (const char *uri)
{
GFile *resource;
char *path;
path = g_uri_unescape_string (uri + strlen ("resource:"), NULL);
resource = g_resource_file_new_for_path (path);
g_free (path);
return G_FILE (resource);
}
static gboolean
g_resource_file_is_native (GFile *file)
{
return FALSE;
}
static gboolean
g_resource_file_has_uri_scheme (GFile *file,
const char *uri_scheme)
{
return g_ascii_strcasecmp (uri_scheme, "resource") == 0;
}
static char *
g_resource_file_get_uri_scheme (GFile *file)
{
return g_strdup ("resource");
}
static char *
g_resource_file_get_basename (GFile *file)
{
gchar *base;
base = strrchr (G_RESOURCE_FILE (file)->path, '/');
return g_strdup (base + 1);
}
static char *
g_resource_file_get_path (GFile *file)
{
return NULL;
}
static char *
g_resource_file_get_uri (GFile *file)
{
char *escaped, *res;
escaped = g_uri_escape_string (G_RESOURCE_FILE (file)->path, G_URI_RESERVED_CHARS_ALLOWED_IN_PATH, FALSE);
res = g_strconcat ("resource://", escaped, NULL);
g_free (escaped);
return res;
}
static char *
g_resource_file_get_parse_name (GFile *file)
{
return g_resource_file_get_uri (file);
}
static GFile *
g_resource_file_get_parent (GFile *file)
{
GResourceFile *resource = G_RESOURCE_FILE (file);
GResourceFile *parent;
gchar *end;
end = strrchr (resource->path, '/');
if (end == G_RESOURCE_FILE (file)->path)
return NULL;
parent = g_object_new (G_TYPE_RESOURCE_FILE, NULL);
parent->path = g_strndup (resource->path,
end - resource->path - 1);
return G_FILE (parent);
}
static GFile *
g_resource_file_dup (GFile *file)
{
GResourceFile *resource = G_RESOURCE_FILE (file);
return g_resource_file_new_for_path (resource->path);
}
static guint
g_resource_file_hash (GFile *file)
{
GResourceFile *resource = G_RESOURCE_FILE (file);
return g_str_hash (resource->path);
}
static gboolean
g_resource_file_equal (GFile *file1,
GFile *file2)
{
GResourceFile *resource1 = G_RESOURCE_FILE (file1);
GResourceFile *resource2 = G_RESOURCE_FILE (file2);
return g_str_equal (resource1->path, resource2->path);
}
static const char *
match_prefix (const char *path,
const char *prefix)
{
int prefix_len;
prefix_len = strlen (prefix);
if (strncmp (path, prefix, prefix_len) != 0)
return NULL;
/* Handle the case where prefix is the root, so that
* the IS_DIR_SEPRARATOR check below works */
if (prefix_len > 0 &&
prefix[prefix_len-1] == '/')
prefix_len--;
return path + prefix_len;
}
static gboolean
g_resource_file_prefix_matches (GFile *parent,
GFile *descendant)
{
GResourceFile *parent_resource = G_RESOURCE_FILE (parent);
GResourceFile *descendant_resource = G_RESOURCE_FILE (descendant);
const char *remainder;
remainder = match_prefix (descendant_resource->path, parent_resource->path);
if (remainder != NULL && *remainder == '/')
return TRUE;
return FALSE;
}
static char *
g_resource_file_get_relative_path (GFile *parent,
GFile *descendant)
{
GResourceFile *parent_resource = G_RESOURCE_FILE (parent);
GResourceFile *descendant_resource = G_RESOURCE_FILE (descendant);
const char *remainder;
remainder = match_prefix (descendant_resource->path, parent_resource->path);
if (remainder != NULL && *remainder == '/')
return g_strdup (remainder + 1);
return NULL;
}
static GFile *
g_resource_file_resolve_relative_path (GFile *file,
const char *relative_path)
{
GResourceFile *resource = G_RESOURCE_FILE (file);
char *filename;
GFile *child;
if (relative_path[0] == '/')
return g_resource_file_new_for_path (relative_path);
filename = g_build_path ("/", resource->path, relative_path, NULL);
child = g_resource_file_new_for_path (filename);
g_free (filename);
return child;
}
static GFileEnumerator *
g_resource_file_enumerate_children (GFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GResourceFile *resource = G_RESOURCE_FILE (file);
return _g_resource_file_enumerator_new (resource,
attributes, flags,
cancellable, error);
}
static GFile *
g_resource_file_get_child_for_display_name (GFile *file,
const char *display_name,
GError **error)
{
GFile *new_file;
new_file = g_file_get_child (file, display_name);
return new_file;
}
static GFileInfo *
g_resource_file_query_info (GFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GResourceFile *resource = G_RESOURCE_FILE (file);
GError *my_error = NULL;
GFileInfo *info;
GFileAttributeMatcher *matcher;
gboolean res;
gsize size;
guint32 resource_flags;
char **children;
gboolean is_dir;
char *base;
is_dir = FALSE;
children = g_resources_enumerate_children (resource->path, 0, NULL);
if (children != NULL)
{
g_strfreev (children);
is_dir = TRUE;
}
/* root is always there */
if (strcmp ("/", resource->path) == 0)
is_dir = TRUE;
if (!is_dir)
{
res = g_resources_get_info (resource->path, 0, &size, &resource_flags, &my_error);
if (!res)
{
if (g_error_matches (my_error, G_RESOURCE_ERROR, G_RESOURCE_ERROR_NOT_FOUND))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND,
_("The resource at '%s' does not exist"),
resource->path);
}
else
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
my_error->message);
g_clear_error (&my_error);
return FALSE;
}
}
matcher = g_file_attribute_matcher_new (attributes);
info = g_file_info_new ();
base = g_resource_file_get_basename (file);
g_file_info_set_name (info, base);
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_READ, TRUE);
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_WRITE, FALSE);
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_EXECUTE, FALSE);
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_RENAME, FALSE);
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_DELETE, FALSE);
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_TRASH, FALSE);
if (is_dir)
{
g_file_info_set_file_type (info, G_FILE_TYPE_DIRECTORY);
}
else
{
GBytes *bytes;
char *content_type;
g_file_info_set_file_type (info, G_FILE_TYPE_REGULAR);
g_file_info_set_size (info, size);
if ((_g_file_attribute_matcher_matches_id (matcher, G_FILE_ATTRIBUTE_ID_STANDARD_CONTENT_TYPE) ||
((~resource_flags & G_RESOURCE_FLAGS_COMPRESSED) &&
_g_file_attribute_matcher_matches_id (matcher, G_FILE_ATTRIBUTE_ID_STANDARD_FAST_CONTENT_TYPE))) &&
(bytes = g_resources_lookup_data (resource->path, 0, NULL)))
{
const guchar *data;
gsize data_size;
data = g_bytes_get_data (bytes, &data_size);
content_type = g_content_type_guess (base, data, data_size, NULL);
g_bytes_unref (bytes);
}
else
content_type = NULL;
if (content_type)
{
_g_file_info_set_attribute_string_by_id (info, G_FILE_ATTRIBUTE_ID_STANDARD_CONTENT_TYPE, content_type);
_g_file_info_set_attribute_string_by_id (info, G_FILE_ATTRIBUTE_ID_STANDARD_FAST_CONTENT_TYPE, content_type);
g_free (content_type);
}
}
g_free (base);
g_file_attribute_matcher_unref (matcher);
return info;
}
static GFileAttributeInfoList *
g_resource_file_query_settable_attributes (GFile *file,
GCancellable *cancellable,
GError **error)
{
return g_file_attribute_info_list_ref (resource_writable_attributes);
}
static GFileAttributeInfoList *
g_resource_file_query_writable_namespaces (GFile *file,
GCancellable *cancellable,
GError **error)
{
return g_file_attribute_info_list_ref (resource_writable_namespaces);
}
static GFileInputStream *
g_resource_file_read (GFile *file,
GCancellable *cancellable,
GError **error)
{
GResourceFile *resource = G_RESOURCE_FILE (file);
GError *my_error = NULL;
GInputStream *stream;
GFileInputStream *res;
stream = g_resources_open_stream (resource->path, 0, &my_error);
if (stream == NULL)
{
if (g_error_matches (my_error, G_RESOURCE_ERROR, G_RESOURCE_ERROR_NOT_FOUND))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND,
_("The resource at '%s' does not exist"),
resource->path);
}
else
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
my_error->message);
g_clear_error (&my_error);
return NULL;
}
res = _g_resource_file_input_stream_new (stream, file);
g_object_unref (stream);
return res;
}
static void
g_resource_file_file_iface_init (GFileIface *iface)
{
iface->dup = g_resource_file_dup;
iface->hash = g_resource_file_hash;
iface->equal = g_resource_file_equal;
iface->is_native = g_resource_file_is_native;
iface->has_uri_scheme = g_resource_file_has_uri_scheme;
iface->get_uri_scheme = g_resource_file_get_uri_scheme;
iface->get_basename = g_resource_file_get_basename;
iface->get_path = g_resource_file_get_path;
iface->get_uri = g_resource_file_get_uri;
iface->get_parse_name = g_resource_file_get_parse_name;
iface->get_parent = g_resource_file_get_parent;
iface->prefix_matches = g_resource_file_prefix_matches;
iface->get_relative_path = g_resource_file_get_relative_path;
iface->resolve_relative_path = g_resource_file_resolve_relative_path;
iface->get_child_for_display_name = g_resource_file_get_child_for_display_name;
iface->enumerate_children = g_resource_file_enumerate_children;
iface->query_info = g_resource_file_query_info;
iface->query_settable_attributes = g_resource_file_query_settable_attributes;
iface->query_writable_namespaces = g_resource_file_query_writable_namespaces;
iface->read_fn = g_resource_file_read;
iface->supports_thread_contexts = TRUE;
}
static GFileInfo *g_resource_file_enumerator_next_file (GFileEnumerator *enumerator,
GCancellable *cancellable,
GError **error);
static gboolean g_resource_file_enumerator_close (GFileEnumerator *enumerator,
GCancellable *cancellable,
GError **error);
static void
g_resource_file_enumerator_finalize (GObject *object)
{
GResourceFileEnumerator *resource;
resource = G_RESOURCE_FILE_ENUMERATOR (object);
g_strfreev (resource->children);
g_free (resource->path);
g_free (resource->attributes);
G_OBJECT_CLASS (g_resource_file_enumerator_parent_class)->finalize (object);
}
static void
g_resource_file_enumerator_class_init (GResourceFileEnumeratorClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GFileEnumeratorClass *enumerator_class = G_FILE_ENUMERATOR_CLASS (klass);
gobject_class->finalize = g_resource_file_enumerator_finalize;
enumerator_class->next_file = g_resource_file_enumerator_next_file;
enumerator_class->close_fn = g_resource_file_enumerator_close;
}
static void
g_resource_file_enumerator_init (GResourceFileEnumerator *resource)
{
}
static GFileEnumerator *
_g_resource_file_enumerator_new (GResourceFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GResourceFileEnumerator *resource;
char **children;
gboolean res;
children = g_resources_enumerate_children (file->path, 0, NULL);
if (children == NULL &&
strcmp ("/", file->path) != 0)
{
res = g_resources_get_info (file->path, 0, NULL, NULL, NULL);
if (res)
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_DIRECTORY,
_("The resource at '%s' is not a directory"),
file->path);
else
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND,
_("The resource at '%s' does not exist"),
file->path);
return NULL;
}
resource = g_object_new (G_TYPE_RESOURCE_FILE_ENUMERATOR,
"container", file,
NULL);
resource->children = children;
resource->path = g_strdup (file->path);
resource->attributes = g_strdup (attributes);
resource->flags = flags;
return G_FILE_ENUMERATOR (resource);
}
static GFileInfo *
g_resource_file_enumerator_next_file (GFileEnumerator *enumerator,
GCancellable *cancellable,
GError **error)
{
GResourceFileEnumerator *resource = G_RESOURCE_FILE_ENUMERATOR (enumerator);
char *path;
GFileInfo *info;
GFile *file;
if (resource->children == NULL ||
resource->children[resource->index] == NULL)
return NULL;
path = g_build_path ("/", resource->path, resource->children[resource->index++], NULL);
file = g_resource_file_new_for_path (path);
g_free (path);
info = g_file_query_info (file,
resource->attributes,
resource->flags,
cancellable,
error);
g_object_unref (file);
return info;
}
static gboolean
g_resource_file_enumerator_close (GFileEnumerator *enumerator,
GCancellable *cancellable,
GError **error)
{
return TRUE;
}
struct _GResourceFileInputStream
{
GFileInputStream parent_instance;
GInputStream *stream;
GFile *file;
};
struct _GResourceFileInputStreamClass
{
GFileInputStreamClass parent_class;
};
#define g_resource_file_input_stream_get_type _g_resource_file_input_stream_get_type
G_DEFINE_TYPE (GResourceFileInputStream, g_resource_file_input_stream, G_TYPE_FILE_INPUT_STREAM);
static gssize g_resource_file_input_stream_read (GInputStream *stream,
void *buffer,
gsize count,
GCancellable *cancellable,
GError **error);
static gssize g_resource_file_input_stream_skip (GInputStream *stream,
gsize count,
GCancellable *cancellable,
GError **error);
static gboolean g_resource_file_input_stream_close (GInputStream *stream,
GCancellable *cancellable,
GError **error);
static goffset g_resource_file_input_stream_tell (GFileInputStream *stream);
static gboolean g_resource_file_input_stream_can_seek (GFileInputStream *stream);
static gboolean g_resource_file_input_stream_seek (GFileInputStream *stream,
goffset offset,
GSeekType type,
GCancellable *cancellable,
GError **error);
static GFileInfo *g_resource_file_input_stream_query_info (GFileInputStream *stream,
const char *attributes,
GCancellable *cancellable,
GError **error);
static void
g_resource_file_input_stream_finalize (GObject *object)
{
GResourceFileInputStream *file = G_RESOURCE_FILE_INPUT_STREAM (object);
g_object_unref (file->stream);
g_object_unref (file->file);
G_OBJECT_CLASS (g_resource_file_input_stream_parent_class)->finalize (object);
}
static void
g_resource_file_input_stream_class_init (GResourceFileInputStreamClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GInputStreamClass *stream_class = G_INPUT_STREAM_CLASS (klass);
GFileInputStreamClass *file_stream_class = G_FILE_INPUT_STREAM_CLASS (klass);
gobject_class->finalize = g_resource_file_input_stream_finalize;
stream_class->read_fn = g_resource_file_input_stream_read;
stream_class->skip = g_resource_file_input_stream_skip;
stream_class->close_fn = g_resource_file_input_stream_close;
file_stream_class->tell = g_resource_file_input_stream_tell;
file_stream_class->can_seek = g_resource_file_input_stream_can_seek;
file_stream_class->seek = g_resource_file_input_stream_seek;
file_stream_class->query_info = g_resource_file_input_stream_query_info;
}
static void
g_resource_file_input_stream_init (GResourceFileInputStream *info)
{
}
static GFileInputStream *
_g_resource_file_input_stream_new (GInputStream *in_stream, GFile *file)
{
GResourceFileInputStream *stream;
stream = g_object_new (G_TYPE_RESOURCE_FILE_INPUT_STREAM, NULL);
stream->stream = g_object_ref (in_stream);
stream->file = g_object_ref (file);
return G_FILE_INPUT_STREAM (stream);
}
static gssize
g_resource_file_input_stream_read (GInputStream *stream,
void *buffer,
gsize count,
GCancellable *cancellable,
GError **error)
{
GResourceFileInputStream *file = G_RESOURCE_FILE_INPUT_STREAM (stream);
return g_input_stream_read (file->stream,
buffer, count, cancellable, error);
}
static gssize
g_resource_file_input_stream_skip (GInputStream *stream,
gsize count,
GCancellable *cancellable,
GError **error)
{
GResourceFileInputStream *file = G_RESOURCE_FILE_INPUT_STREAM (stream);
return g_input_stream_skip (file->stream,
count, cancellable, error);
}
static gboolean
g_resource_file_input_stream_close (GInputStream *stream,
GCancellable *cancellable,
GError **error)
{
GResourceFileInputStream *file = G_RESOURCE_FILE_INPUT_STREAM (stream);
return g_input_stream_close (file->stream,
cancellable, error);
}
static goffset
g_resource_file_input_stream_tell (GFileInputStream *stream)
{
GResourceFileInputStream *file = G_RESOURCE_FILE_INPUT_STREAM (stream);;
if (!G_IS_SEEKABLE (file->stream));
return 0;
return g_seekable_tell (G_SEEKABLE (file->stream));
}
static gboolean
g_resource_file_input_stream_can_seek (GFileInputStream *stream)
{
GResourceFileInputStream *file = G_RESOURCE_FILE_INPUT_STREAM (stream);
return G_IS_SEEKABLE (file->stream) && g_seekable_can_seek (G_SEEKABLE (file->stream));
}
static gboolean
g_resource_file_input_stream_seek (GFileInputStream *stream,
goffset offset,
GSeekType type,
GCancellable *cancellable,
GError **error)
{
GResourceFileInputStream *file = G_RESOURCE_FILE_INPUT_STREAM (stream);
if (!G_IS_SEEKABLE (file->stream))
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Input stream doesn't implement seek"));
return FALSE;
}
return g_seekable_seek (G_SEEKABLE (file->stream),
offset, type, cancellable, error);
}
static GFileInfo *
g_resource_file_input_stream_query_info (GFileInputStream *stream,
const char *attributes,
GCancellable *cancellable,
GError **error)
{
GResourceFileInputStream *file = G_RESOURCE_FILE_INPUT_STREAM (stream);
return g_file_query_info (file->file, attributes, 0, cancellable, error);
}
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