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Write a signature to diagram files.

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This commit is contained in:
Přemysl Eric Janouch 2011-01-10 06:56:07 +01:00
parent d7c22f10d5
commit 01d771403e
1 changed files with 51 additions and 7 deletions
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58
src/ld-diagram.c
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@ -54,6 +54,8 @@ static void ld_diagram_set_property (GObject *object, guint property_id,
static void ld_diagram_dispose (GObject *gobject);
static void ld_diagram_finalize (GObject *gobject);
static gboolean write_signature (GOutputStream *stream, GError **error);
static void ld_diagram_real_changed (LdDiagram *self);
static void ld_diagram_clear_internal (LdDiagram *self);
static void ld_diagram_unselect_all_internal (LdDiagram *self);
@ -279,13 +281,37 @@ gboolean
ld_diagram_save_to_file (LdDiagram *self,
const gchar *filename, GError **error)
{
GFile *file;
GFileOutputStream *file_stream;
JsonGenerator *generator;
JsonNode *root;
GError *json_error;
GError *local_error;
g_return_val_if_fail (LD_IS_DIAGRAM (self), FALSE);
g_return_val_if_fail (filename != NULL, FALSE);
file = g_file_new_for_path (filename);
local_error = NULL;
file_stream = g_file_replace (file, NULL, FALSE,
G_FILE_CREATE_NONE, NULL, &local_error);
g_object_unref (file);
if (local_error)
{
g_propagate_error (error, local_error);
return FALSE;
}
local_error = NULL;
write_signature (G_OUTPUT_STREAM (file_stream), &local_error);
if (local_error)
{
g_object_unref (file_stream);
g_propagate_error (error, local_error);
return FALSE;
}
/* TODO: Implement saving for real. This is just a stub. */
generator = json_generator_new ();
g_object_set (generator, "pretty", TRUE, NULL);
@ -295,15 +321,33 @@ ld_diagram_save_to_file (LdDiagram *self,
json_generator_set_root (generator, root);
json_node_free (root);
json_error = NULL;
json_generator_to_file (generator, filename, &json_error);
if (json_error)
{
g_propagate_error (error, json_error);
local_error = NULL;
json_generator_to_stream (generator, G_OUTPUT_STREAM (file_stream),
NULL, &local_error);
g_object_unref (file_stream);
g_object_unref (generator);
if (local_error)
{
g_propagate_error (error, local_error);
return FALSE;
}
return TRUE;
}
static gboolean
write_signature (GOutputStream *stream, GError **error)
{
static const gchar signature[] = "/* logdiag diagram */\n";
GError *local_error = NULL;
g_output_stream_write (stream, signature, sizeof (signature) - 1,
NULL, &local_error);
if (local_error)
{
g_propagate_error (error, local_error);
return FALSE;
}
g_object_unref (generator);
return TRUE;
}