1 #include <glib/glib.h>
2 #include <glib/gstdio.h>
3 #include <gio/gio.h>
4 #include <string.h>
5
6 #ifdef G_OS_UNIX
7 #include <unistd.h>
8 #endif
9 #ifdef G_OS_WIN32
10 #include <io.h> /* for close() */
11 #endif
12
13 static const char *original_data = "This is some test data that we can put in a file...";
14 static const char *new_data = "new data..";
15
16 static void
verify_pos(GIOStream * iostream,goffset expected_pos)17 verify_pos (GIOStream *iostream, goffset expected_pos)
18 {
19 goffset pos;
20
21 pos = g_seekable_tell (G_SEEKABLE (iostream));
22 g_assert_cmpint (pos, ==, expected_pos);
23
24 pos = g_seekable_tell (G_SEEKABLE (g_io_stream_get_input_stream (iostream)));
25 g_assert_cmpint (pos, ==, expected_pos);
26
27 pos = g_seekable_tell (G_SEEKABLE (g_io_stream_get_output_stream (iostream)));
28 g_assert_cmpint (pos, ==, expected_pos);
29 }
30
31 static void
verify_iostream(GFileIOStream * file_iostream)32 verify_iostream (GFileIOStream *file_iostream)
33 {
34 gboolean res;
35 GIOStream *iostream;
36 GError *error;
37 GInputStream *in;
38 GOutputStream *out;
39 char buffer[1024];
40 gsize n_bytes;
41 char *modified_data;
42
43 iostream = G_IO_STREAM (file_iostream);
44
45 verify_pos (iostream, 0);
46
47 in = g_io_stream_get_input_stream (iostream);
48 out = g_io_stream_get_output_stream (iostream);
49
50 res = g_input_stream_read_all (in, buffer, 20, &n_bytes, NULL, NULL);
51 g_assert (res);
52 g_assert_cmpmem (buffer, n_bytes, original_data, 20);
53
54 verify_pos (iostream, 20);
55
56 res = g_seekable_seek (G_SEEKABLE (iostream),
57 -10, G_SEEK_END,
58 NULL, NULL);
59 g_assert (res);
60 verify_pos (iostream, strlen (original_data) - 10);
61
62 res = g_input_stream_read_all (in, buffer, 20, &n_bytes, NULL, NULL);
63 g_assert (res);
64 g_assert_cmpmem (buffer, n_bytes, original_data + strlen (original_data) - 10, 10);
65
66 verify_pos (iostream, strlen (original_data));
67
68 res = g_seekable_seek (G_SEEKABLE (iostream),
69 10, G_SEEK_SET,
70 NULL, NULL);
71
72 res = g_input_stream_skip (in, 5, NULL, NULL);
73 g_assert (res == 5);
74 verify_pos (iostream, 15);
75
76 res = g_input_stream_skip (in, 10000, NULL, NULL);
77 g_assert (res == strlen (original_data) - 15);
78 verify_pos (iostream, strlen (original_data));
79
80 res = g_seekable_seek (G_SEEKABLE (iostream),
81 10, G_SEEK_SET,
82 NULL, NULL);
83
84 verify_pos (iostream, 10);
85
86 res = g_output_stream_write_all (out, new_data, strlen (new_data),
87 &n_bytes, NULL, NULL);
88 g_assert (res);
89 g_assert_cmpint (n_bytes, ==, strlen (new_data));
90
91 verify_pos (iostream, 10 + strlen (new_data));
92
93 res = g_seekable_seek (G_SEEKABLE (iostream),
94 0, G_SEEK_SET,
95 NULL, NULL);
96 g_assert (res);
97 verify_pos (iostream, 0);
98
99 res = g_input_stream_read_all (in, buffer, strlen (original_data), &n_bytes, NULL, NULL);
100 g_assert (res);
101 g_assert_cmpint ((int)n_bytes, ==, strlen (original_data));
102 buffer[n_bytes] = 0;
103
104 modified_data = g_strdup (original_data);
105 memcpy (modified_data + 10, new_data, strlen (new_data));
106 g_assert_cmpstr (buffer, ==, modified_data);
107
108 verify_pos (iostream, strlen (original_data));
109
110 res = g_seekable_seek (G_SEEKABLE (iostream),
111 0, G_SEEK_SET,
112 NULL, NULL);
113 g_assert (res);
114 verify_pos (iostream, 0);
115
116 res = g_output_stream_close (out, NULL, NULL);
117 g_assert (res);
118
119 res = g_input_stream_read_all (in, buffer, 15, &n_bytes, NULL, NULL);
120 g_assert (res);
121 g_assert_cmpmem (buffer, n_bytes, modified_data, 15);
122
123 error = NULL;
124 res = g_output_stream_write_all (out, new_data, strlen (new_data),
125 &n_bytes, NULL, &error);
126 g_assert (!res);
127 g_assert_error (error, G_IO_ERROR, G_IO_ERROR_CLOSED);
128 g_error_free (error);
129
130 error = NULL;
131 res = g_io_stream_close (iostream, NULL, &error);
132 g_assert (res);
133 g_assert_no_error (error);
134
135 g_free (modified_data);
136 }
137
138 static void
test_g_file_open_readwrite(void)139 test_g_file_open_readwrite (void)
140 {
141 char *tmp_file;
142 int fd;
143 gboolean res;
144 GFileIOStream *file_iostream;
145 char *path;
146 GFile *file;
147 GError *error;
148
149 fd = g_file_open_tmp ("readwrite_XXXXXX",
150 &tmp_file, NULL);
151 g_assert (fd != -1);
152 close (fd);
153
154 res = g_file_set_contents (tmp_file,
155 original_data, -1, NULL);
156 g_assert (res);
157
158 path = g_build_filename (g_get_tmp_dir (), "g-a-nonexisting-file", NULL);
159 file = g_file_new_for_path (path);
160 g_free (path);
161 error = NULL;
162 file_iostream = g_file_open_readwrite (file, NULL, &error);
163 g_assert (file_iostream == NULL);
164 g_assert (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND));
165 g_error_free (error);
166 g_object_unref (file);
167
168 file = g_file_new_for_path (tmp_file);
169 error = NULL;
170 file_iostream = g_file_open_readwrite (file, NULL, &error);
171 g_assert (file_iostream != NULL);
172 g_object_unref (file);
173
174 verify_iostream (file_iostream);
175
176 g_object_unref (file_iostream);
177
178 g_unlink (tmp_file);
179 g_free (tmp_file);
180 }
181
182 static void
test_g_file_create_readwrite(void)183 test_g_file_create_readwrite (void)
184 {
185 char *tmp_file;
186 int fd;
187 gboolean res;
188 GFileIOStream *file_iostream;
189 GOutputStream *out;
190 GFile *file;
191 GError *error;
192 gsize n_bytes;
193
194 fd = g_file_open_tmp ("readwrite_XXXXXX",
195 &tmp_file, NULL);
196 g_assert (fd != -1);
197 close (fd);
198
199 file = g_file_new_for_path (tmp_file);
200 error = NULL;
201 file_iostream = g_file_create_readwrite (file, 0, NULL, &error);
202 g_assert (file_iostream == NULL);
203 g_assert_error (error, G_IO_ERROR, G_IO_ERROR_EXISTS);
204 g_error_free (error);
205
206 g_unlink (tmp_file);
207 file_iostream = g_file_create_readwrite (file, 0, NULL, &error);
208 g_assert (file_iostream != NULL);
209
210 out = g_io_stream_get_output_stream (G_IO_STREAM (file_iostream));
211 res = g_output_stream_write_all (out, original_data, strlen (original_data),
212 &n_bytes, NULL, NULL);
213 g_assert (res);
214 g_assert_cmpint (n_bytes, ==, strlen (original_data));
215
216 res = g_seekable_seek (G_SEEKABLE (file_iostream),
217 0, G_SEEK_SET,
218 NULL, NULL);
219 g_assert (res);
220
221 verify_iostream (file_iostream);
222
223 g_object_unref (file_iostream);
224 g_object_unref (file);
225
226 g_unlink (tmp_file);
227 g_free (tmp_file);
228 }
229
230 static void
test_g_file_replace_readwrite(void)231 test_g_file_replace_readwrite (void)
232 {
233 char *tmp_file, *backup, *data;
234 int fd;
235 gboolean res;
236 GFileIOStream *file_iostream;
237 GInputStream *in;
238 GOutputStream *out;
239 GFile *file;
240 GError *error;
241 char buffer[1024];
242 gsize n_bytes;
243
244 fd = g_file_open_tmp ("readwrite_XXXXXX",
245 &tmp_file, NULL);
246 g_assert (fd != -1);
247 close (fd);
248
249 res = g_file_set_contents (tmp_file,
250 new_data, -1, NULL);
251 g_assert (res);
252
253 file = g_file_new_for_path (tmp_file);
254 error = NULL;
255 file_iostream = g_file_replace_readwrite (file, NULL,
256 TRUE, 0, NULL, &error);
257 g_assert (file_iostream != NULL);
258
259 in = g_io_stream_get_input_stream (G_IO_STREAM (file_iostream));
260
261 /* Ensure its empty */
262 res = g_input_stream_read_all (in, buffer, sizeof buffer, &n_bytes, NULL, NULL);
263 g_assert (res);
264 g_assert_cmpint ((int)n_bytes, ==, 0);
265
266 out = g_io_stream_get_output_stream (G_IO_STREAM (file_iostream));
267 res = g_output_stream_write_all (out, original_data, strlen (original_data),
268 &n_bytes, NULL, NULL);
269 g_assert (res);
270 g_assert_cmpint (n_bytes, ==, strlen (original_data));
271
272 res = g_seekable_seek (G_SEEKABLE (file_iostream),
273 0, G_SEEK_SET,
274 NULL, NULL);
275 g_assert (res);
276
277 verify_iostream (file_iostream);
278
279 g_object_unref (file_iostream);
280 g_object_unref (file);
281
282 backup = g_strconcat (tmp_file, "~", NULL);
283 res = g_file_get_contents (backup,
284 &data,
285 NULL, NULL);
286 g_assert (res);
287 g_assert_cmpstr (data, ==, new_data);
288 g_free (data);
289 g_unlink (backup);
290 g_free (backup);
291
292 g_unlink (tmp_file);
293 g_free (tmp_file);
294 }
295
296
297 int
main(int argc,char * argv[])298 main (int argc,
299 char *argv[])
300 {
301 g_test_init (&argc, &argv, NULL);
302
303 g_test_add_func ("/readwrite/test_g_file_open_readwrite",
304 test_g_file_open_readwrite);
305 g_test_add_func ("/readwrite/test_g_file_create_readwrite",
306 test_g_file_create_readwrite);
307 g_test_add_func ("/readwrite/test_g_file_replace_readwrite",
308 test_g_file_replace_readwrite);
309
310 return g_test_run();
311 }
312