1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2010 Free Software Foundation, Inc.
3
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
16
17 #include <config.h>
18
19 #include "output/msglog.h"
20
21 #include <errno.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <unistd.h>
25
26 #include "data/file-name.h"
27 #include "data/file-handle-def.h"
28 #include "data/settings.h"
29 #include "libpspp/cast.h"
30 #include "libpspp/message.h"
31 #include "output/driver-provider.h"
32 #include "output/message-item.h"
33
34 #include "gl/fwriteerror.h"
35 #include "gl/xalloc.h"
36
37 #include "gettext.h"
38 #define _(msgid) gettext (msgid)
39
40 struct msglog_driver
41 {
42 struct output_driver driver;
43 FILE *file;
44 struct file_handle *handle;
45 };
46
47 static const struct output_driver_class msglog_class;
48
49 static struct msglog_driver *
msglog_driver_cast(struct output_driver * driver)50 msglog_driver_cast (struct output_driver *driver)
51 {
52 assert (driver->class == &msglog_class);
53 return UP_CAST (driver, struct msglog_driver, driver);
54 }
55
56 struct output_driver *
msglog_create(const char * file_name)57 msglog_create (const char *file_name)
58 {
59 enum settings_output_devices type;
60 struct msglog_driver *ml;
61 FILE *file;
62
63 struct file_handle *handle = fh_create_file (NULL, file_name, NULL, fh_default_properties ());
64
65 file = fn_open (handle, "w");
66 if (file == NULL)
67 {
68 msg_error (errno, _("error opening output file `%s'"), file_name);
69 return NULL;
70 }
71
72 type = (!strcmp (file_name, "-") || isatty (fileno (file))
73 ? SETTINGS_DEVICE_TERMINAL
74 : SETTINGS_DEVICE_UNFILTERED);
75
76 ml = xzalloc (sizeof *ml);
77 ml->handle = handle;
78 output_driver_init (&ml->driver, &msglog_class, file_name, type);
79 ml->file = file;
80
81 output_driver_register (&ml->driver);
82
83 return &ml->driver;
84 }
85
86 static void
msglog_destroy(struct output_driver * driver)87 msglog_destroy (struct output_driver *driver)
88 {
89 struct msglog_driver *ml = msglog_driver_cast (driver);
90
91 fn_close (ml->handle, ml->file);
92 fh_unref (ml->handle);
93 free (ml);
94 }
95
96 static void
msglog_submit(struct output_driver * driver,const struct output_item * item)97 msglog_submit (struct output_driver *driver, const struct output_item *item)
98 {
99 struct msglog_driver *ml = msglog_driver_cast (driver);
100
101 if (is_message_item (item))
102 {
103 const struct message_item *message_item = to_message_item (item);
104 char *s = msg_to_string (message_item_get_msg (message_item));
105 fprintf (ml->file, "%s\n", s);
106 free (s);
107 }
108 }
109
110 static const struct output_driver_class msglog_class =
111 {
112 "msglog",
113 msglog_destroy,
114 msglog_submit,
115 NULL
116 };
117