/* PSPP - a program for statistical analysis.
- Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2010, 2012, 2013 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <config.h>
-#include <output/journal.h>
+#include "output/journal.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
+#include <stdbool.h>
-#include <data/file-name.h>
-#include <libpspp/str.h>
+#include "data/file-name.h"
+#include "libpspp/cast.h"
+#include "libpspp/message.h"
+#include "libpspp/str.h"
+#include "output/driver-provider.h"
+#include "output/output-item.h"
-#include "fwriteerror.h"
-#include "error.h"
-#include "xalloc.h"
+#include "gl/fwriteerror.h"
+#include "gl/xalloc.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
-/* Journaling enabled? */
-static bool journal_enabled = false;
+struct journal_driver
+ {
+ struct output_driver driver;
+ FILE *file;
-/* Name of the journal file. */
-static char *journal_file_name = NULL;
+ /* Name of journal file. */
+ char *file_name;
+ bool destroyed;
+ };
-/* Journal file. */
-static FILE *journal_file = NULL;
+static const struct output_driver_class journal_class;
+
+/* Journal driver, if journaling is enabled. */
+static struct journal_driver journal;
+
+
+static struct journal_driver *
+journal_driver_cast (struct output_driver *driver)
+{
+ assert (driver->class == &journal_class);
+ return UP_CAST (driver, struct journal_driver, driver);
+}
+
+static void
+journal_close (void)
+{
+ if (journal.file != NULL)
+ {
+ if (fwriteerror (journal.file))
+ msg_error (errno, _("error writing output file `%s'"),
+ journal.file_name);
+
+ }
+ journal.file = NULL;
+}
+
+static void
+journal_destroy (struct output_driver *driver)
+{
+ struct journal_driver *j = journal_driver_cast (driver);
+
+ if (!j->destroyed)
+ journal_close ();
+
+ j->destroyed = true;
+}
+
+static void
+journal_output (struct journal_driver *j, char *s)
+{
+ if (j->file)
+ {
+ fprintf (j->file, "%s\n", s);
+
+ /* Flush the journal in case the syntax we're about to write
+ causes a crash. Having the syntax already written to disk
+ makes postmortem analysis of the problem possible. */
+ fflush (j->file);
+ }
+
+ free (s);
+}
+
+static void
+journal_submit (struct output_driver *driver, const struct output_item *item)
+{
+ struct journal_driver *j = journal_driver_cast (driver);
+
+ switch (item->type)
+ {
+ case OUTPUT_ITEM_MESSAGE:
+ journal_output (j, msg_to_string (item->message));
+ break;
+
+ case OUTPUT_ITEM_TEXT:
+ if (item->text.subtype == TEXT_ITEM_SYNTAX)
+ journal_output (j, text_item_get_plain_text (item));
+ break;
+
+ case OUTPUT_ITEM_GROUP:
+ for (size_t i = 0; i < item->group.n_children; i++)
+ journal_submit (driver, item->group.children[i]);
+ break;
+
+ case OUTPUT_ITEM_CHART:
+ case OUTPUT_ITEM_IMAGE:
+ case OUTPUT_ITEM_PAGE_BREAK:
+ case OUTPUT_ITEM_PAGE_SETUP:
+ case OUTPUT_ITEM_TABLE:
+ break;
+ }
+}
+
+static const struct output_driver_class journal_class =
+ {
+ .name = "journal",
+ .destroy = journal_destroy,
+ .submit = journal_submit,
+ };
+\f
/* Enables journaling. */
void
-journal_enable (void)
+journal_init (void)
{
- journal_enabled = true;
+ /* Create journal driver. */
+ output_driver_init (&journal.driver, &journal_class, "journal",
+ SETTINGS_DEVICE_UNFILTERED);
+ journal.file = NULL;
+
+ /* Register journal driver. */
+ output_driver_register (&journal.driver);
+
+ journal_enable ();
+ journal.destroyed = false;
}
/* Disables journaling. */
void
journal_disable (void)
{
- journal_enabled = false;
- if (journal_file != NULL)
- fflush (journal_file);
+ journal_close ();
}
-/* Sets the name of the journal file to FILE_NAME. */
+
+/* Enable journaling. */
void
-journal_set_file_name (const char *file_name)
+journal_enable (void)
{
- assert (file_name != NULL);
-
- if (journal_file != NULL)
+ if (journal.file == NULL)
{
- if (fwriteerror (journal_file))
- error (0, errno, _("error writing \"%s\""), journal_file_name);
+ journal.file = fopen (journal_get_file_name (), "a");
+ if (journal.file == NULL)
+ {
+ msg_error (errno, _("error opening output file `%s'"),
+ journal_get_file_name ());
+ journal_close ();
+ }
}
+}
- free (journal_file_name);
- journal_file_name = xstrdup (file_name);
+
+/* Returns true if journaling is enabled, false otherwise. */
+bool
+journal_is_enabled (void)
+{
+ return journal.file != NULL ;
}
-/* Writes LINE to the journal file (if journaling is enabled).
- If PREFIX is non-null, the line will be prefixed by "> ". */
+/* Sets the name of the journal file to FILE_NAME. */
void
-journal_write (bool prefix, const char *line)
+journal_set_file_name (const char *file_name)
{
- if (!journal_enabled)
- return;
+ journal_close ();
+ free (journal.file_name);
+ journal.file_name = xstrdup (file_name);
+}
- if (journal_file == NULL)
+/* Returns the name of the journal file. The caller must not modify or free
+ the returned string. */
+const char *
+journal_get_file_name (void)
+{
+ if (journal.file_name == NULL)
{
- if (journal_file_name == NULL)
- {
- const char *output_path = default_output_path ();
- journal_file_name = xasprintf ("%s%s", output_path, "pspp.jnl");
- }
- journal_file = fopen (journal_file_name, "w");
- if (journal_file == NULL)
- {
- error (0, errno, _("error creating \"%s\""), journal_file_name);
- journal_enabled = false;
- return;
- }
+ const char *output_path = default_output_path ();
+ journal.file_name = xasprintf ("%s%s", output_path, "pspp.jnl");
}
-
- if (prefix)
- fputs ("> ", journal_file);
- fputs (line, journal_file);
- if (strchr (line, '\n') == NULL)
- putc ('\n', journal_file);
- fflush (journal_file);
+ return journal.file_name;
}
projects / pspp / blobdiff