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
|
#undef G_DISABLE_ASSERT
#undef G_LOG_DOMAIN
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <glib.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#define BUFFER_SIZE 1024
static void
test_small_writes (void)
{
GIOChannel *io;
GIOStatus status;
guint cnt;
gchar tmp;
GError *error = NULL;
io = g_io_channel_new_file ("iochannel-test-outfile", "w", &error);
if (error)
{
g_warning ("Unable to open file %s: %s",
"iochannel-test-outfile",
error->message);
g_error_free (error);
exit (1);
}
g_io_channel_set_encoding (io, NULL, NULL);
g_io_channel_set_buffer_size (io, 1022);
cnt = 2 * g_io_channel_get_buffer_size (io);
tmp = 0;
while (cnt)
{
status = g_io_channel_write_chars (io, &tmp, 1, NULL, NULL);
if (status == G_IO_STATUS_ERROR)
break;
if (status == G_IO_STATUS_NORMAL)
cnt--;
}
g_assert (status == G_IO_STATUS_NORMAL);
g_io_channel_unref (io);
}
gint main (gint argc, gchar * argv[])
{
GIOChannel *gio_r, *gio_w ;
GError *gerr = NULL;
GString *buffer;
char *filename;
char *srcdir = getenv ("srcdir");
gint rlength = 0;
glong wlength = 0;
gsize length_out;
const gchar encoding[] = "EUC-JP";
GIOStatus status;
GIOFlags flags;
if (!srcdir)
srcdir = ".";
filename = g_strconcat (srcdir, G_DIR_SEPARATOR_S, "iochannel-test-infile", NULL);
setbuf (stdout, NULL); /* For debugging */
gio_r = g_io_channel_new_file (filename, "r", &gerr);
if (gerr)
{
g_warning ("Unable to open file %s: %s", filename, gerr->message);
g_error_free (gerr);
return 1;
}
gio_w = g_io_channel_new_file ("iochannel-test-outfile", "w", &gerr);
if (gerr)
{
g_warning ("Unable to open file %s: %s", "iochannel-test-outfile", gerr->message);
g_error_free (gerr);
return 1;
}
g_io_channel_set_encoding (gio_r, encoding, &gerr);
if (gerr)
{
g_warning (gerr->message);
g_error_free (gerr);
return 1;
}
g_io_channel_set_buffer_size (gio_r, BUFFER_SIZE);
status = g_io_channel_set_flags (gio_r, G_IO_FLAG_NONBLOCK, &gerr);
if (status == G_IO_STATUS_ERROR)
{
g_warning (gerr->message);
g_error_free (gerr);
gerr = NULL;
}
flags = g_io_channel_get_flags (gio_r);
buffer = g_string_sized_new (BUFFER_SIZE);
while (TRUE)
{
do
status = g_io_channel_read_line_string (gio_r, buffer, NULL, &gerr);
while (status == G_IO_STATUS_AGAIN);
if (status != G_IO_STATUS_NORMAL)
break;
rlength += buffer->len;
do
status = g_io_channel_write_chars (gio_w, buffer->str, buffer->len,
&length_out, &gerr);
while (status == G_IO_STATUS_AGAIN);
if (status != G_IO_STATUS_NORMAL)
break;
wlength += length_out;
if (length_out < buffer->len)
g_warning ("Only wrote part of the line.");
#ifdef VERBOSE
g_print ("%s", buffer->str);
#endif
g_string_truncate (buffer, 0);
}
switch (status)
{
case G_IO_STATUS_EOF:
break;
case G_IO_STATUS_ERROR:
g_warning (gerr->message);
g_error_free (gerr);
gerr = NULL;
break;
default:
g_warning ("Abnormal exit from write loop.");
break;
}
do
status = g_io_channel_flush (gio_w, &gerr);
while (status == G_IO_STATUS_AGAIN);
if (status == G_IO_STATUS_ERROR)
{
g_warning (gerr->message);
g_error_free (gerr);
gerr = NULL;
}
#ifdef VERBOSE
g_print ("read %d bytes, wrote %ld bytes\n", rlength, wlength);
#endif
g_io_channel_unref(gio_r);
g_io_channel_unref(gio_w);
test_small_writes ();
return 0;
}
|
