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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
*
* Copyright (C) 2014 Colin Walters <walters@verbum.org>
*
* 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.
*/
/**
* SECTION:gsfiletreewalk
* @title: GSFileTreeWalk
* @short_description: Recurse over a directory tree
*
* While #GFileEnumerator provides an API to iterate over one
* directory, in many cases one wants to operate recursively.
* This API is designed to do that.
*
* In addition, a #GSFileTreeWalk contains Unix-native API such as
* file descriptor based enumeration.
*/
#include "config.h"
#define _GSYSTEM_NO_LOCAL_ALLOC
#include "libgsystem.h"
#include "gsystem-file-tree-walk.h"
#include "gsystem-enum-types.h"
#include <glib-unix.h>
#include <string.h>
#include <sys/stat.h>
#include <dirent.h>
#include <fcntl.h>
/* Taken from systemd/src/shared/util.h */
union dirent_storage {
struct dirent dent;
guint8 storage[offsetof(struct dirent, d_name) +
((NAME_MAX + 1 + sizeof(long)) & ~(sizeof(long) - 1))];
};
typedef GObjectClass GSFileTreeWalkClass;
struct _GSFileTreeWalk
{
GObject parent;
GSFileTreeWalkFlags flags;
int origin_dfd;
struct stat origin_stbuf;
guint owns_dfd : 1;
};
G_DEFINE_TYPE (GSFileTreeWalk, gs_file_tree_walk, G_TYPE_OBJECT);
enum
{
PROP_0,
PROP_FLAGS,
N_PROPS
};
static GParamSpec *gs_file_tree_walk_pspecs[N_PROPS];
static void
gs_file_tree_walk_init (GSFileTreeWalk *self)
{
self->origin_dfd = -1;
}
static void
gs_file_tree_walk_finalize (GObject *object)
{
GSFileTreeWalk *self = GS_FILE_TREE_WALK (object);
if (self->owns_dfd && self->origin_dfd != -1)
(void) close (self->origin_dfd);
if (G_OBJECT_CLASS (gs_file_tree_walk_class)->finalize != NULL)
G_OBJECT_CLASS (gs_file_tree_walk_class)->finalize (object);
}
static void
gs_file_tree_walk_class_init (GSFileTreeWalkClass *class)
{
/**
* GSFileTreeWalk:flags:
*/
gs_file_tree_walk_pspecs[PROP_FLAGS] = g_param_spec_flags ("flags", "", "",
GS_TYPE_FILE_TREE_WALK_FLAGS,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class, N_PROPS, gs_file_tree_walk_pspecs);
}
static void
gs_file_tree_walk_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GSFileTreeWalk *self = GS_FILE_TREE_WALK (object);
switch (prop_id)
{
case PROP_FLAGS:
self->flags = g_value_get_flags (value);
break;
default:
g_assert_not_reached ();
}
}
static void
gs_file_tree_walk_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GSFileTreeWalk *self = GS_FILE_TREE_WALK (object);
switch (prop_id)
{
case PROP_FLAGS:
g_value_set_flags (value, self->flags);
break;
default:
g_assert_not_reached ();
}
}
/**
* gs_file_tree_walk_open:
* @path: Directory to enumerate
* @flags: Flags controlling enumeration
* @cancellable: Cancellable
* @error: Error
*
* Returns: (transfer full): A new directory enumerator
*/
GSFileTreeWalk *
gs_file_tree_walk_open (GFile *path,
GSFileTreeWalkFlags flags,
GCancellable *cancellable,
GError **error)
{
gs_unref_object GSFileTreeWalk *ftw = g_object_new (GS_TYPE_FILE_TREE_WALK, "flags", flags, NULL);
ftw->owns_dfd = TRUE;
if (!gs_file_open_dir_fd (path, &ftw->origin_dfd,
cancellable, error))
return NULL;
return g_object_ref (ftw);
}
/**
* gs_file_tree_walk_open_at:
* @dfd: Directory file descriptor
* @flags: Flags controlling enumeration
* @cancellable: Cancellable
* @error: Error
*
* Returns: (transfer full): A new directory enumerator
*/
GSFileTreeWalk *
gs_file_tree_walk_open_at (int dfd,
GSFileTreeWalkFlags flags,
GCancellable *cancellable,
GError **error)
{
gs_unref_object GSFileTreeWalk *ftw = g_object_new (GS_TYPE_FILE_TREE_WALK, "flags", flags, NULL);
ftw->origin_dfd = dfd;
if (fstat (ftw->origin_dfd, &ftw->origin_stbuf) != 0)
{
int errsv = errno;
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"fstat: %s", g_strerror (errsv));
return NULL;
}
return g_object_ref (ftw);
}
/**
* gs_file_tree_walk_next:
* @self: Self
* @out_file_type: (out): File type, may be %G_FILE_TYPE_UNKNOWN
*
* Returns: %TRUE if there are more files to traverse
*/
gboolean
gs_file_tree_walk_next (GSFileTreeWalk *self,
GFileType *out_file_type)
{
}
int gs_file_tree_walk_get_dirfd (GSFileTreeWalk *self);
const char *gs_file_tree_walk_get_name (GSFileTreeWalk *self);
char *gs_file_tree_walk_get_relpath (GSFileTreeWalk *self);
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