1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/*
* Copyright (C) 2014, Softathome <contact@softathome.com>
*
* 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 2.1 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* Author: Martyn Russell <martyn@lanedo.com>
*/
#include "config.h"
#include "tracker-file-enumerator.h"
static void tracker_file_enumerator_file_iface_init (TrackerEnumeratorIface *iface);
struct _TrackerFileEnumerator {
GObject parent_instance;
GFileEnumerator *file_enumerator;
};
/**
* SECTION:tracker-file-enumerator
* @short_description: File based enumerator for file:// descendant URIs
* @include: libtracker-miner/miner.h
*
* #TrackerFileEnumerator is a local file implementation of the
* #TrackerEnumerator interface, charged with handling all file:// type URIs.
*
* Underneath it all, this implementation makes use of the
* #GFileEnumerator APIs.
*
* Since: 1.2
**/
G_DEFINE_TYPE_WITH_CODE (TrackerFileEnumerator, tracker_file_enumerator, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (TRACKER_TYPE_ENUMERATOR,
tracker_file_enumerator_file_iface_init))
static void
tracker_file_enumerator_finalize (GObject *object)
{
TrackerFileEnumerator *tfe = TRACKER_FILE_ENUMERATOR (object);
if (tfe->file_enumerator) {
g_object_unref (tfe->file_enumerator);
}
G_OBJECT_CLASS (tracker_file_enumerator_parent_class)->finalize (object);
}
static void
tracker_file_enumerator_class_init (TrackerFileEnumeratorClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = tracker_file_enumerator_finalize;
}
static void
tracker_file_enumerator_init (TrackerFileEnumerator *fe)
{
}
static gpointer
file_enumerator_next (TrackerEnumerator *enumerator,
GCancellable *cancellable,
GError **error)
{
TrackerFileEnumerator *tfe;
GFileInfo *info = NULL;
GError *local_error = NULL;
if (g_cancellable_set_error_if_cancelled (cancellable, error)) {
return NULL;
}
tfe = TRACKER_FILE_ENUMERATOR (enumerator);
info = g_file_enumerator_next_file (tfe->file_enumerator, cancellable, &local_error);
/* FIXME: Do we need a ->is_running check here like before? */
if (local_error || !info) {
if (local_error) {
g_critical ("Could not crawl through directory: %s", local_error->message);
g_propagate_error (error, local_error);
}
/* No more files or we are stopping anyway, so clean
* up and close all file enumerators.
*/
if (info) {
g_object_unref (info);
}
return NULL;
}
/* FIXME: We need some check here to call
* enumerator_data_process which signals
* CHECK_DIRECTORY_CONTENTS
*/
g_debug ("--> Found:'%s' (%s)",
g_file_info_get_name (info),
g_file_info_get_file_type (info) == G_FILE_TYPE_DIRECTORY ? "Dir" : "File");
return info;
}
static void
file_enumerator_next_thread (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
TrackerEnumerator *enumerator = source_object;
GFileInfo *info;
GError *error = NULL;
info = file_enumerator_next (enumerator, cancellable, &error);
if (error) {
g_task_return_error (task, error);
} else {
g_task_return_pointer (task, info, (GDestroyNotify) g_object_unref);
}
}
static void
file_enumerator_next_async (TrackerEnumerator *enumerator,
gint io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (enumerator, cancellable, callback, user_data);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, file_enumerator_next_thread);
g_object_unref (task);
}
static gpointer
file_enumerator_next_finish (TrackerEnumerator *enumerator,
GAsyncResult *result,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (result, enumerator), NULL);
return g_task_propagate_pointer (G_TASK (result), error);
}
static void
tracker_file_enumerator_file_iface_init (TrackerEnumeratorIface *iface)
{
iface->next = file_enumerator_next;
iface->next_async = file_enumerator_next_async;
iface->next_finish = file_enumerator_next_finish;
}
/**
* tracker_file_enumerator_new:
* @file_enumerator: the #GFileEnumerator used to enumerate with
*
* Creates a new TrackerEnumerator which can be used to create new
* #TrackerMinerFS classes. See #TrackerMinerFS for an example of how
* to use your #TrackerEnumerator.
*
* Returns: (transfer full): a #TrackerEnumerator which must be
* unreferenced with g_object_unref().
*
* Since: 1.2
**/
TrackerEnumerator *
tracker_file_enumerator_new (GFileEnumerator *file_enumerator)
{
TrackerFileEnumerator *tfe;
g_return_val_if_fail (G_IS_FILE_ENUMERATOR (file_enumerator), NULL);
tfe = g_object_new (TRACKER_TYPE_FILE_ENUMERATOR, NULL);
if (!tfe) {
return NULL;
}
tfe->file_enumerator = g_object_ref (file_enumerator);
return TRACKER_ENUMERATOR (tfe);
}
|
