Add (de)marshalling functions for GFileInfos.

2009-02-27  Alexander Larsson  <alexl@redhat.com>

        * common/Makefile.am:
        * common/gvfsfileinfo.[ch]:
	Add (de)marshalling functions for GFileInfos.

        * common/gvfsdaemonprotocol.h:
	Add protocol extensions for query info over streams

        * client/gdaemonfileinputstream.c:
	Support sync query_info.

        * daemon/Makefile.am:
        * daemon/gvfsjobqueryinforead.[ch]:
        * daemon/gvfsbackend.h:
	Added query info job and backend call for input streams

        * daemon/gvfsbackendtest.c:
	Implement query_info_on_read

        * daemon/gvfschannel.[ch]:
        Add g_vfs_channel_send_info

        * daemon/gvfsreadchannel.c:
        (read_channel_handle_request):
	Handle query info

        * test/Makefile.am:
        * test/test-query-info-stream.c:
	Add test for stream query info.


svn path=/trunk/; revision=2257

2 files changed, 227 insertions, 0 deletions

diff --git a/test/Makefile.am b/test/Makefile.am
index 7ddcd8ca..70c0cb7a 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -10,6 +10,7 @@ AM_LDFLAGS =                           \
 	$(GLIB_LIBS)
 
 noinst_PROGRAMS = \
+	test-query-info-stream    \
 	benchmark-gvfs-small-files    \
 	benchmark-gvfs-big-files      \
 	benchmark-posix-small-files   \
diff --git a/test/test-query-info-stream.c b/test/test-query-info-stream.c
new file mode 100644
index 00000000..6bd7ffcb
--- /dev/null
+++ b/test/test-query-info-stream.c
@@ -0,0 +1,226 @@
+/* GIO - GLib Input, Output and Streaming Library
+ * 
+ * Copyright (C) 2006-2007 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Alexander Larsson <alexl@redhat.com>
+ */
+
+
+#include <config.h>
+
+#include <stdio.h>
+#include <unistd.h>
+#include <locale.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <glib.h>
+#include <gio/gio.h>
+
+/* Fill test data with 0..200, repeadedly.
+ * This is not a power of two to avoid possible
+ * effects with base-2 i/o buffer sizes that could
+ * hide bugs */
+#define DATA_MODULO 200
+
+static gboolean
+verify_block (guchar *data, guchar *start, gsize size)
+{
+  guchar d;
+  gsize i;
+
+  d = 0;
+  if (start)
+    d = *start;
+  for (i = 0; i < size; i++)
+    {
+      if (data[i] != d)
+	return FALSE;
+      
+      d++;
+      if (d >= DATA_MODULO)
+	d = 0;
+    }
+
+  if (start)
+    *start = d;
+  
+  return TRUE;
+}
+
+static guchar *
+allocate_block (gsize size)
+{
+  guchar *data;
+  gsize i;
+  guchar d;
+
+  data = g_malloc (size);
+  d = 0;
+  for (i = 0; i < size; i++)
+    {
+      data[i] = d;
+      d++;
+      if (d >= DATA_MODULO)
+	d = 0;
+    }
+  return data;
+}
+
+static void
+create_file (GFile *file, gsize size)
+{
+  guchar *data;
+  GError *error;
+
+  data = allocate_block (size);
+
+  error = NULL;
+  if (!g_file_replace_contents (file,
+				(char *)data,
+				size,
+				NULL, FALSE, 0,
+				NULL, NULL, &error))
+    {
+      g_print ("error creating file: %s\n", error->message);
+      exit (1);
+    }
+  g_free (data);
+}
+
+static void
+check_query_info (GFileInputStream *in)
+{
+  GFileInfo *info;
+  GError *error;
+  goffset file_size;
+
+  error = NULL;
+  info = g_file_input_stream_query_info (in, "*", NULL, &error);
+  if (info == NULL)
+    {
+      g_print ("error querying info: %s\n", error->message);
+      exit (1);
+    }
+
+  if (!g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_STANDARD_SIZE))
+    {
+      g_print ("couldn't read size attribute\n");
+      exit (1);
+    }
+  
+  file_size = g_file_info_get_size (info);
+  g_print ("file size: %d\n", (int)file_size);
+  if (file_size != 100*1000)
+    {
+      g_print ("wrong file size\n");
+      exit (1);
+    }
+}
+
+int
+main (int argc, char *argv[])
+{
+  GFile *file;
+  GFileInputStream *in;
+  GError *error;
+  gssize res;
+  gsize read_size;
+  guchar *buffer;
+  guchar start;
+  gboolean do_create_file;
+  
+  g_type_init ();
+
+  do_create_file = FALSE;
+  
+  if (argc > 1)
+    {
+      if (strcmp(argv[1], "-c") == 0)
+	{
+	  do_create_file = TRUE;
+	  argc--;
+	  argv++;
+	}
+    }
+      
+  if (argc != 2)
+    {
+      g_print ("need file arg");
+      return 1;
+    }
+
+  file = g_file_new_for_commandline_arg (argv[1]);
+
+  if (do_create_file)
+    create_file (file, 100*1000);
+
+  error = NULL;
+  
+  in = g_file_read (file, NULL, &error);
+  if (in == NULL)
+    {
+      g_print ("error reading file: %s\n", error->message);
+      exit (1);
+    }
+
+  check_query_info (in);
+
+  buffer = malloc (100*1000);
+
+  start = 0;
+  read_size = 0;
+  do
+    {
+      res = g_input_stream_read  (G_INPUT_STREAM (in),
+				  buffer,
+				  150,
+				  NULL, &error);
+      if (res == 0)
+	break;
+      
+      if (res < 0)
+	{
+	  g_print ("error reading: %s\n", error->message);
+	  exit (1);
+	}
+
+      g_print ("res: %d\n", (int)res);
+
+      if (!verify_block (buffer, &start, res))
+	{
+	  g_print ("error in block starting at %d\n", (int)read_size);
+	  exit (1);
+	}
+
+      read_size += res;
+
+      check_query_info (in);
+    }
+  while (1);
+
+  if (read_size != 100*1000)
+    {
+      g_print ("Didn't read entire file\n");
+      exit (1);
+    }
+  
+  
+  return 0;
+}