gnome-utils r8215 - trunk/logview

[cosimoc svn gnome org]

Author: cosimoc
Date: Tue Dec 23 13:24:48 2008
New Revision: 8215
URL: http://svn.gnome.org/viewvc/gnome-utils?rev=8215&view=rev

Log:
First draft of a GIO-powered LogviewLog object.

Added:
   trunk/logview/logview-log.c
   trunk/logview/logview-log.h
Modified:
   trunk/logview/Makefile.am

Modified: trunk/logview/Makefile.am
==============================================================================
--- trunk/logview/Makefile.am	(original)
+++ trunk/logview/Makefile.am	Tue Dec 23 13:24:48 2008
@@ -29,6 +29,8 @@
 	logrtns.h		\
 	logview.c		\
 	logview.h		\
+	logview-log.h \
+	logview-log.c \
 	misc.c			\
 	misc.h			\
 	monitor.c       	\

Added: trunk/logview/logview-log.c
==============================================================================
--- (empty file)
+++ trunk/logview/logview-log.c	Tue Dec 23 13:24:48 2008
@@ -0,0 +1,179 @@
+/* logview-log.c
+ *
+ * Copyright (C) 1998 Cesar Miquel <miquel df uba ar>
+ * Copyright (C) 2008 Cosimo Cecchi <cosimoc gnome org>
+ *
+ * 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 the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 551 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ */
+
+#include <glib.h>
+#include <gio/gio.h>
+
+#include "logview-log.h"
+
+G_DEFINE_TYPE (LogviewLog, logview_log, G_TYPE_OBJECT);
+
+#define GET_PRIVATE(o) \
+  (G_TYPE_INSTANCE_GET_PRIVATE ((o), LOGVIEW_TYPE_LOG, LogviewLogPrivate))
+
+struct _LogviewLogPrivate {
+  GFile *file;
+
+  /* stats about the file */
+  GTimeVal *file_time;
+  goffset file_size;
+
+  /* real content, array of lines */
+  char **lines;
+};
+
+typedef struct {
+  LogviewLog *log;
+  GError *err;
+
+  LogviewCreateCallback callback;
+  gpointer user_data;
+} LoadJob;
+
+static void
+logview_log_class_init (LogviewLogClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  g_type_class_add_private (klass, sizeof (LogviewLogPrivate));
+}
+
+static void
+logview_log_init (LogviewLog *self)
+{
+  self->priv = GET_PRIVATE (self);
+}
+
+static gboolean
+log_load_done (gpointer user_data)
+{
+  LoadJob *job = user_data;
+
+  if (job->err) {
+    /* the callback will have NULL as log, and the error set */
+    g_object_unref (job->log);
+    job->callback (NULL, job->err, job->user_data);
+  }
+
+  job->callback (job->log, NULL, job->user_data);
+
+  g_slice_free (LoadJob, job);
+
+  return FALSE;
+}
+
+static gboolean
+log_load (GIOSchedulerJob *io_job,
+          GCancellable *cancellable,
+          gpointer user_data)
+{
+  /* this runs in a separate i/o thread */
+  LoadJob *job = user_data;
+  LogviewLog *log = job->log;
+  GFile *f = log->priv->file;
+  GFileInfo *info;
+  const char *content_type;
+  char *buffer;
+  GFileType type;
+  GError *err = NULL;
+
+  info = g_file_query_info (f,
+                            G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE ","
+                            G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME ","
+                            G_FILE_ATTRIBUTE_STANDARD_TYPE ","
+                            G_FILE_ATTRIBUTE_STANDARD_SIZE ","
+                            G_FILE_ATTRIBUTE_TIME_MODIFIED ",",
+                            0, NULL, &err);
+  if (err) {
+    if (err->code == G_IO_ERROR_PERMISSION_DENIED) {
+      /* TODO: PolicyKit integration */
+    }
+    job->err = err;
+    goto out;
+  }
+
+  type = g_file_info_get_file_type (info);
+  content_type = g_file_info_get_content_type (info);
+
+  if (type != (G_FILE_TYPE_REGULAR || G_FILE_TYPE_SYMBOLIC_LINK) ||
+      !g_content_type_is_a (content_type, "text/plain")) /* TODO: zipped logs */
+  {
+    err = g_error_new_literal (LOGVIEW_ERROR_QUARK, LOGVIEW_ERROR_NOT_A_LOG,
+                               "The file is not a regular file or is not a text file");
+    job->err = err;
+    goto out;
+  }
+
+  log->priv->file_size = g_file_info_get_size (info);
+  g_file_info_get_modification_time (info, log->priv->file_time);
+
+  g_object_unref (info);
+
+  /* try now to read the file */
+  g_file_load_contents (f, NULL, &buffer,
+                        NULL, NULL, &err);
+  if (err) {
+    if (err->code == G_IO_ERROR_PERMISSION_DENIED) {
+      /* TODO: PolicyKit integration */
+    }
+    job->err = err;
+    goto out;
+  }
+
+  /* split into an array of lines */
+  log->priv->lines = g_strsplit (buffer, "\n", -1);
+  g_free (buffer);
+
+out:
+  g_io_scheduler_job_send_to_mainloop_async (io_job,
+                                             log_load_done,
+                                             job, NULL);
+  return FALSE;
+}
+
+static void
+log_setup_load (LogviewLog *log, LogviewCreateCallback callback,
+                gpointer user_data)
+{
+  LoadJob *job;
+
+  job = g_slice_new0 (LoadJob);
+  job->callback = callback;
+  job->user_data = user_data;
+  job->log = log;
+  job->err = NULL;
+
+  /* push the loading job into another thread */
+  g_io_scheduler_push_job (log_load,
+                           job,
+                           NULL, 0, NULL);
+}
+
+void
+logview_log_create (const char *filename, LogviewCreateCallback callback,
+                    gpointer user_data)
+{
+  LogviewLog *log = g_object_new (LOGVIEW_TYPE_LOG, NULL);
+
+  log->priv->file = g_file_new_for_path (filename);
+
+  log_setup_load (log, callback, user_data);
+}
\ No newline at end of file

Added: trunk/logview/logview-log.h
==============================================================================
--- (empty file)
+++ trunk/logview/logview-log.h	Tue Dec 23 13:24:48 2008
@@ -0,0 +1,72 @@
+/* logview-log.h
+ *
+ * Copyright (C) 1998 Cesar Miquel <miquel df uba ar>
+ * Copyright (C) 2008 Cosimo Cecchi <cosimoc gnome org>
+ *
+ * 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 the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 551 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ */
+
+/* logview-log.h */
+
+#ifndef _LOGVIEW_LOG
+#define _LOGVIEW_LOG
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define LOGVIEW_TYPE_LOG logview_log_get_type()
+#define LOGVIEW_LOG(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST ((obj), LOGVIEW_TYPE_LOG, LogviewLog))
+#define LOGVIEW_LOG_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST ((klass), LOGVIEW_TYPE_LOG, LogviewLogClass))
+#define LOGVIEW_IS_LOG(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LOGVIEW_TYPE_LOG))
+#define LOGVIEW_IS_LOG_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE ((klass), LOGVIEW_TYPE_LOG))
+#define LOGVIEW_LOG_GET_CLASS(obj) \
+  (G_TYPE_INSTANCE_GET_CLASS ((obj), LOGVIEW_TYPE_LOG, LogviewLogClass))
+  
+typedef struct _LogviewLog LogviewLog;
+typedef struct _LogviewLogClass LogviewLogClass;
+typedef struct _LogviewLogPrivate LogviewLogPrivate;
+
+typedef void (* LogviewCreateCallback) (LogviewLog *log,
+                                        GError *error,
+                                        gpointer user_data);
+
+#define LOGVIEW_ERROR_QUARK g_quark_from_static_string ("logview-error")
+
+typedef enum {
+  LOGVIEW_ERROR_FAILED,
+  LOGVIEW_ERROR_NOT_A_LOG
+} LogviewErrorEnum;
+
+struct _LogviewLog {
+  GObject parent;
+  LogviewLogPrivate *priv;
+};
+
+struct _LogviewLogClass {
+  GObjectClass parent_class;
+};
+
+GType logview_log_get_type (void);
+LogviewLog* logview_log_new (char *filename, GError **error);
+
+G_END_DECLS
+
+#endif /* _LOGVIEW_LOG */
\ No newline at end of file