1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2007, 2010, 2012 Free Software Foundation, Inc.
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.
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.
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/>. */
19 #include "output/journal.h"
25 #include "data/file-name.h"
26 #include "libpspp/cast.h"
27 #include "libpspp/message.h"
28 #include "libpspp/str.h"
29 #include "output/driver-provider.h"
30 #include "output/message-item.h"
31 #include "output/text-item.h"
33 #include "gl/fwriteerror.h"
34 #include "gl/xalloc.h"
37 #define _(msgid) gettext (msgid)
41 struct output_driver driver;
45 /* Name of journal file. */
49 static const struct output_driver_class journal_class;
51 /* Journal driver, if journaling is enabled. */
52 static struct journal_driver *journal;
55 static struct journal_driver *
56 journal_driver_cast (struct output_driver *driver)
58 assert (driver->class == &journal_class);
59 return UP_CAST (driver, struct journal_driver, driver);
65 if (journal != NULL && journal->file != NULL)
67 if (fwriteerror (journal->file))
68 msg_error (errno, _("error writing output file `%s'"),
75 journal_destroy (struct output_driver *driver)
77 struct journal_driver *j = journal_driver_cast (driver);
80 free (j->command_name);
87 journal_output (struct journal_driver *j, const char *s)
91 j->file = fopen (journal_get_file_name (), "a");
94 msg_error (errno, _("error opening output file `%s'"),
95 journal_get_file_name ());
96 output_driver_destroy (&j->driver);
101 fprintf (j->file, "%s\n", s);
103 /* Flush the journal in case the syntax we're about to write
104 causes a crash. Having the syntax already written to disk
105 makes postmortem analysis of the problem possible. */
110 journal_submit (struct output_driver *driver, const struct output_item *item)
112 struct journal_driver *j = journal_driver_cast (driver);
114 output_driver_track_current_command (item, &j->command_name);
116 if (is_text_item (item))
118 const struct text_item *text_item = to_text_item (item);
119 enum text_item_type type = text_item_get_type (text_item);
121 if (type == TEXT_ITEM_SYNTAX)
122 journal_output (j, text_item_get_text (text_item));
124 else if (is_message_item (item))
126 const struct message_item *message_item = to_message_item (item);
127 const struct msg *msg = message_item_get_msg (message_item);
128 char *s = msg_to_string (msg, j->command_name);
129 journal_output (j, s);
134 static const struct output_driver_class journal_class =
142 /* Enables journaling. */
144 journal_enable (void)
148 /* Create journal driver. */
149 journal = xzalloc (sizeof *journal);
150 output_driver_init (&journal->driver, &journal_class, "journal",
151 SETTINGS_DEVICE_UNFILTERED);
152 journal->file = NULL;
153 journal->command_name = NULL;
155 /* Register journal driver. */
156 output_driver_register (&journal->driver);
160 /* Disables journaling. */
162 journal_disable (void)
165 output_driver_destroy (&journal->driver);
168 /* Returns true if journaling is enabled, false otherwise. */
170 journal_is_enabled (void)
172 return journal != NULL;
175 /* Sets the name of the journal file to FILE_NAME. */
177 journal_set_file_name (const char *file_name)
180 free (journal->file_name);
181 journal->file_name = xstrdup (file_name);
184 /* Returns the name of the journal file. The caller must not modify or free
185 the returned string. */
187 journal_get_file_name (void)
189 if (journal->file_name == NULL)
191 const char *output_path = default_output_path ();
192 journal->file_name = xasprintf ("%s%s", output_path, "pspp.jnl");
194 return journal->file_name;