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1 office 1 /* GIO - GLib Input, Output and Streaming Library
2 *
3 * Copyright (C) 2006-2007 Red Hat, Inc.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
17 *
18 * Author: Alexander Larsson <alexl@redhat.com>
19 */
20  
21 #include "config.h"
22 #include "glocalvfs.h"
23 #include "glocalfile.h"
24 #include "giomodule.h"
25 #include "giomodule-priv.h"
26 #include "gvfs.h"
27 #include <gio/gdummyfile.h>
28 #include <sys/types.h>
29 #ifdef G_OS_UNIX
30 #include <pwd.h>
31 #endif
32 #include <string.h>
33  
34  
35 struct _GLocalVfs
36 {
37 GVfs parent;
38 };
39  
40 struct _GLocalVfsClass
41 {
42 GVfsClass parent_class;
43  
44 };
45  
46 #define g_local_vfs_get_type _g_local_vfs_get_type
47 G_DEFINE_TYPE_WITH_CODE (GLocalVfs, g_local_vfs, G_TYPE_VFS,
48 _g_io_modules_ensure_extension_points_registered ();
49 g_io_extension_point_implement (G_VFS_EXTENSION_POINT_NAME,
50 g_define_type_id,
51 "local",
52 0))
53 static void
54 g_local_vfs_finalize (GObject *object)
55 {
56 /* must chain up */
57 G_OBJECT_CLASS (g_local_vfs_parent_class)->finalize (object);
58 }
59  
60 static void
61 g_local_vfs_init (GLocalVfs *vfs)
62 {
63 }
64  
65 /**
66 * g_local_vfs_new:
67 *
68 * Returns a new #GVfs handle for a local vfs.
69 *
70 * Returns: a new #GVfs handle.
71 **/
72 GVfs *
73 _g_local_vfs_new (void)
74 {
75 return g_object_new (G_TYPE_LOCAL_VFS, NULL);
76 }
77  
78 static GFile *
79 g_local_vfs_get_file_for_path (GVfs *vfs,
80 const char *path)
81 {
82 return _g_local_file_new (path);
83 }
84  
85 static GFile *
86 g_local_vfs_get_file_for_uri (GVfs *vfs,
87 const char *uri)
88 {
89 char *path;
90 GFile *file;
91 char *stripped_uri, *hash;
92  
93 if (strchr (uri, '#') != NULL)
94 {
95 stripped_uri = g_strdup (uri);
96 hash = strchr (stripped_uri, '#');
97 *hash = 0;
98 }
99 else
100 stripped_uri = (char *)uri;
101  
102 path = g_filename_from_uri (stripped_uri, NULL, NULL);
103  
104 if (stripped_uri != uri)
105 g_free (stripped_uri);
106  
107 if (path != NULL)
108 file = _g_local_file_new (path);
109 else
110 file = _g_dummy_file_new (uri);
111  
112 g_free (path);
113  
114 return file;
115 }
116  
117 static const gchar * const *
118 g_local_vfs_get_supported_uri_schemes (GVfs *vfs)
119 {
120 static const gchar * uri_schemes[] = { "file", NULL };
121  
122 return uri_schemes;
123 }
124  
125 static GFile *
126 g_local_vfs_parse_name (GVfs *vfs,
127 const char *parse_name)
128 {
129 GFile *file;
130 char *filename;
131 char *user_prefix;
132 const char *user_start, *user_end;
133 char *rest;
134  
135 g_return_val_if_fail (G_IS_VFS (vfs), NULL);
136 g_return_val_if_fail (parse_name != NULL, NULL);
137  
138 if (g_ascii_strncasecmp ("file:", parse_name, 5) == 0)
139 filename = g_filename_from_uri (parse_name, NULL, NULL);
140 else
141 {
142 if (*parse_name == '~')
143 {
144 parse_name ++;
145 user_start = parse_name;
146  
147 while (*parse_name != 0 && *parse_name != '/')
148 parse_name++;
149  
150 user_end = parse_name;
151  
152 if (user_end == user_start)
153 user_prefix = g_strdup (g_get_home_dir ());
154 else
155 {
156 #ifdef G_OS_UNIX
157 struct passwd *passwd_file_entry;
158 char *user_name;
159  
160 user_name = g_strndup (user_start, user_end - user_start);
161 passwd_file_entry = getpwnam (user_name);
162 g_free (user_name);
163  
164 if (passwd_file_entry != NULL &&
165 passwd_file_entry->pw_dir != NULL)
166 user_prefix = g_strdup (passwd_file_entry->pw_dir);
167 else
168 #endif
169 user_prefix = g_strdup (g_get_home_dir ());
170 }
171  
172 rest = NULL;
173 if (*user_end != 0)
174 rest = g_filename_from_utf8 (user_end, -1, NULL, NULL, NULL);
175  
176 filename = g_build_filename (user_prefix, rest, NULL);
177 g_free (rest);
178 g_free (user_prefix);
179 }
180 else
181 filename = g_filename_from_utf8 (parse_name, -1, NULL, NULL, NULL);
182 }
183  
184 if (filename == NULL)
185 filename = g_strdup (parse_name);
186  
187 file = _g_local_file_new (filename);
188 g_free (filename);
189  
190 return file;
191 }
192  
193 static gboolean
194 g_local_vfs_is_active (GVfs *vfs)
195 {
196 return TRUE;
197 }
198  
199 static void
200 g_local_vfs_class_init (GLocalVfsClass *class)
201 {
202 GObjectClass *object_class;
203 GVfsClass *vfs_class;
204  
205 object_class = (GObjectClass *) class;
206  
207 object_class->finalize = g_local_vfs_finalize;
208  
209 vfs_class = G_VFS_CLASS (class);
210  
211 vfs_class->is_active = g_local_vfs_is_active;
212 vfs_class->get_file_for_path = g_local_vfs_get_file_for_path;
213 vfs_class->get_file_for_uri = g_local_vfs_get_file_for_uri;
214 vfs_class->get_supported_uri_schemes = g_local_vfs_get_supported_uri_schemes;
215 vfs_class->parse_name = g_local_vfs_parse_name;
216 }