[gtksourceview/wip/loader-saver: 34/34] GtkSourceFileLoader (not finished!)
- From: Sébastien Wilmet <swilmet src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtksourceview/wip/loader-saver: 34/34] GtkSourceFileLoader (not finished!)
- Date: Mon, 3 Feb 2014 16:00:26 +0000 (UTC)
commit 7f18ff286876767442153981e359a828457f1661
Author: Sébastien Wilmet <swilmet gnome org>
Date: Thu Jan 9 19:05:52 2014 +0100
GtkSourceFileLoader (not finished!)
docs/reference/Makefile.am | 1 +
gtksourceview/Makefile.am | 2 +
gtksourceview/gtksourcefileloader.c | 1054 ++++++++++++++++++++++++++++++++
gtksourceview/gtksourcefileloader.h | 115 ++++
gtksourceview/gtksourcetypes-private.h | 1 +
po/POTFILES.in | 1 +
6 files changed, 1174 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/Makefile.am b/docs/reference/Makefile.am
index 6c72ead..ab6c2ed 100644
--- a/docs/reference/Makefile.am
+++ b/docs/reference/Makefile.am
@@ -33,6 +33,7 @@ IGNORE_HFILES = \
gtksourcecompletionwordsutils.h \
gtksourcecontextengine.h \
gtksourceengine.h \
+ gtksourcefileloader.h \
gtksourcefilesaver.h \
gtksourcegutter-private.h \
gtksourcegutterrendererlines.h \
diff --git a/gtksourceview/Makefile.am b/gtksourceview/Makefile.am
index 937ee3f..7151559 100644
--- a/gtksourceview/Makefile.am
+++ b/gtksourceview/Makefile.am
@@ -60,6 +60,7 @@ libgtksourceview_private_headers = \
gtksourcecompletion-private.h \
gtksourcecontextengine.h \
gtksourceengine.h \
+ gtksourcefileloader.h \
gtksourcefilesaver.h \
gtksourcegutter-private.h \
gtksourcegutterrendererlines.h \
@@ -83,6 +84,7 @@ libgtksourceview_private_c_files = \
gtksourcecompletionmodel.c \
gtksourcecontextengine.c \
gtksourceengine.c \
+ gtksourcefileloader.c \
gtksourcefilesaver.c \
gtksourcegutterrendererlines.c \
gtksourcegutterrenderermarks.c \
diff --git a/gtksourceview/gtksourcefileloader.c b/gtksourceview/gtksourcefileloader.c
new file mode 100644
index 0000000..ce99db2
--- /dev/null
+++ b/gtksourceview/gtksourcefileloader.c
@@ -0,0 +1,1054 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; coding: utf-8 -*- */
+/* gtksourcefileloader.c
+ * This file is part of GtkSourceView
+ *
+ * Copyright (C) 2005 - Paolo Maggi
+ * Copyright (C) 2007 - Paolo Maggi, Steve Frécinaux
+ * Copyright (C) 2008 - Jesse van den Kieboom
+ * Copyright (C) 2014 - Sébastien Wilmet
+ *
+ * GtkSourceView 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 2.1 of the License, or (at your option) any later version.
+ *
+ * GtkSourceView 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/*#include <glib/gstdio.h>*/
+#include <gio/gio.h>
+#include "gtksourcefileloader.h"
+#include "gtksourcebufferoutputstream.h"
+#include "gtksourceview-marshal.h"
+#include "gtksourceview-typebuiltins.h"
+#include "gtksourceview-i18n.h"
+
+/*
+#include "gtk_source-utils.h"
+#include "gtk_source-settings.h"
+*/
+
+#if 0
+#define DEBUG(x) (x)
+#else
+#define DEBUG(x)
+#endif
+
+typedef struct
+{
+ GtkSourceFileLoader *loader;
+ GCancellable *cancellable;
+
+ gssize read;
+ gboolean tried_mount;
+} AsyncData;
+
+enum
+{
+ LOADING,
+ LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+enum
+{
+ PROP_0,
+ PROP_BUFFER,
+ PROP_LOCATION,
+ PROP_ENCODING,
+ PROP_NEWLINE_TYPE,
+ PROP_STREAM,
+ PROP_COMPRESSION_TYPE
+};
+
+#define READ_CHUNK_SIZE 8192
+#define LOADER_QUERY_ATTRIBUTES G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE "," \
+ G_FILE_ATTRIBUTE_STANDARD_TYPE "," \
+ G_FILE_ATTRIBUTE_TIME_MODIFIED "," \
+ G_FILE_ATTRIBUTE_STANDARD_SIZE "," \
+ G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE "," \
+ GTK_SOURCE_METADATA_ATTRIBUTE_ENCODING
+
+struct _GtkSourceFileLoaderPrivate
+{
+ /* TODO replace by properties, or remove */
+ GSettings *enc_settings;
+ GSettings *editor_settings;
+
+ GtkSourceBuffer *document; /* TODO rename */
+ gboolean used; /* FIXME is used used? */
+
+ /* Info on the current file */
+ GFileInfo *info;
+ GFile *location;
+ const GtkSourceEncoding *encoding;
+ const GtkSourceEncoding *auto_detected_encoding;
+ GtkSourceNewlineType auto_detected_newline_type;
+ GtkSourceCompressionType auto_detected_compression_type;
+
+ goffset bytes_read;
+
+ GCancellable *cancellable;
+
+ /* TODO rename */
+ GInputStream *stream;
+ GOutputStream *output;
+
+ /* TODO rename the field */
+ /* FIXME is it not better to allocate this field separately? I think the
+ * private struct is allocated with GSlice by GObject, and GSlice is
+ * better to use only for small struct, no?
+ */
+ gchar buffer[READ_CHUNK_SIZE];
+
+ GError *error;
+ gboolean guess_content_type_from_content;
+};
+
+G_DEFINE_TYPE_WITH_PRIVATE (GtkSourceFileLoader, gtk_source_file_loader, G_TYPE_OBJECT)
+
+static void open_async_read (AsyncData *async);
+static void read_file_chunk (AsyncData *async);
+
+static void
+gtk_source_file_loader_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GtkSourceFileLoader *loader = GTK_SOURCE_FILE_LOADER (object);
+
+ switch (prop_id)
+ {
+ case PROP_BUFFER:
+ g_assert (loader->priv->document == NULL);
+ loader->priv->document = g_value_get_object (value);
+ break;
+
+ case PROP_LOCATION:
+ g_assert (loader->priv->location == NULL);
+ loader->priv->location = g_value_dup_object (value);
+ break;
+
+ case PROP_ENCODING:
+ g_assert (loader->priv->encoding == NULL);
+ loader->priv->encoding = g_value_get_boxed (value);
+ break;
+
+ case PROP_NEWLINE_TYPE:
+ loader->priv->auto_detected_newline_type = g_value_get_enum (value);
+ break;
+
+ case PROP_STREAM:
+ g_assert (loader->priv->stream == NULL);
+ loader->priv->stream = g_value_dup_object (value);
+ break;
+
+ case PROP_COMPRESSION_TYPE:
+ loader->priv->auto_detected_compression_type = g_value_get_enum (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_source_file_loader_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GtkSourceFileLoader *loader = GTK_SOURCE_FILE_LOADER (object);
+
+ switch (prop_id)
+ {
+ case PROP_BUFFER:
+ g_value_set_object (value, loader->priv->document);
+ break;
+
+ case PROP_LOCATION:
+ g_value_set_object (value, loader->priv->location);
+ break;
+
+ case PROP_ENCODING:
+ g_value_set_boxed (value, gtk_source_file_loader_get_encoding (loader));
+ break;
+
+ case PROP_NEWLINE_TYPE:
+ g_value_set_enum (value, loader->priv->auto_detected_newline_type);
+ break;
+
+ case PROP_STREAM:
+ g_value_set_object (value, loader->priv->stream);
+ break;
+
+ case PROP_COMPRESSION_TYPE:
+ g_value_set_enum (value, loader->priv->auto_detected_compression_type);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_source_file_loader_dispose (GObject *object)
+{
+ GtkSourceFileLoaderPrivate *priv;
+
+ priv = GTK_SOURCE_FILE_LOADER (object)->priv;
+
+ if (priv->cancellable != NULL)
+ {
+ g_cancellable_cancel (priv->cancellable);
+ g_object_unref (priv->cancellable);
+ priv->cancellable = NULL;
+ }
+
+ g_clear_error (&priv->error);
+
+ g_clear_object (&priv->stream);
+ g_clear_object (&priv->output);
+ g_clear_object (&priv->info);
+ g_clear_object (&priv->location);
+ g_clear_object (&priv->enc_settings);
+ g_clear_object (&priv->editor_settings);
+
+ G_OBJECT_CLASS (gtk_source_file_loader_parent_class)->dispose (object);
+}
+
+static void
+gtk_source_file_loader_class_init (GtkSourceFileLoaderClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->dispose = gtk_source_file_loader_dispose;
+ object_class->get_property = gtk_source_file_loader_get_property;
+ object_class->set_property = gtk_source_file_loader_set_property;
+
+ g_object_class_install_property (object_class, PROP_BUFFER,
+ g_param_spec_object ("buffer",
+ "Buffer",
+ "The associated GtkSourceBuffer",
+ GTK_SOURCE_TYPE_BUFFER,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (object_class, PROP_LOCATION,
+ g_param_spec_object ("location",
+ "Location",
+ "The location of the file to load",
+ G_TYPE_FILE,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (object_class, PROP_ENCODING,
+ g_param_spec_boxed ("encoding",
+ "Encoding",
+ "The encoding of the file",
+ GTK_SOURCE_TYPE_ENCODING,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (object_class, PROP_NEWLINE_TYPE,
+ g_param_spec_enum ("newline-type",
+ "Newline type",
+ "The type of line ending",
+ GTK_SOURCE_TYPE_NEWLINE_TYPE,
+ GTK_SOURCE_NEWLINE_TYPE_LF,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT |
+ G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (object_class, PROP_COMPRESSION_TYPE,
+ g_param_spec_enum ("compression-type",
+ "Compression type",
+ "The compression type",
+ GTK_SOURCE_TYPE_COMPRESSION_TYPE,
+ GTK_SOURCE_COMPRESSION_TYPE_NONE,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT |
+ G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (object_class, PROP_STREAM,
+ g_param_spec_object ("stream",
+ "Stream",
+ "The input stream to load",
+ G_TYPE_INPUT_STREAM,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_STATIC_STRINGS));
+
+ signals[LOADING] =
+ g_signal_new ("loading",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GtkSourceFileLoaderClass, loading),
+ NULL, NULL,
+ gtk_source_marshal_VOID__BOOLEAN_POINTER,
+ G_TYPE_NONE,
+ 2,
+ G_TYPE_BOOLEAN,
+ G_TYPE_POINTER);
+}
+
+static void
+gtk_source_file_loader_init (GtkSourceFileLoader *loader)
+{
+ loader->priv = gtk_source_file_loader_get_instance_private (loader);
+}
+
+GtkSourceFileLoader *
+gtk_source_file_loader_new_from_stream (GtkSourceBuffer *buffer,
+ GInputStream *stream,
+ const GtkSourceEncoding *encoding)
+{
+ g_return_val_if_fail (GTK_SOURCE_IS_BUFFER (buffer), NULL);
+ g_return_val_if_fail (G_IS_INPUT_STREAM (stream), NULL);
+
+ return g_object_new (GTK_SOURCE_TYPE_FILE_LOADER,
+ "buffer", buffer,
+ "stream", stream,
+ "encoding", encoding,
+ NULL);
+}
+
+GtkSourceFileLoader *
+gtk_source_file_loader_new (GtkSourceBuffer *buffer,
+ GFile *location,
+ const GtkSourceEncoding *encoding)
+{
+ g_return_val_if_fail (GTK_SOURCE_IS_BUFFER (buffer), NULL);
+
+ return g_object_new (GTK_SOURCE_TYPE_FILE_LOADER,
+ "buffer", buffer,
+ "location", location,
+ "encoding", encoding,
+ NULL);
+}
+
+static AsyncData *
+async_data_new (GtkSourceFileLoader *loader)
+{
+ AsyncData *async;
+
+ async = g_slice_new (AsyncData);
+ async->loader = loader;
+ async->cancellable = g_object_ref (loader->priv->cancellable);
+ async->tried_mount = FALSE;
+
+ return async;
+}
+
+static void
+async_data_free (AsyncData *async)
+{
+ g_object_unref (async->cancellable);
+ g_slice_free (AsyncData, async);
+}
+
+static void
+loader_load_completed_or_failed (GtkSourceFileLoader *loader,
+ AsyncData *async)
+{
+ gtk_source_file_loader_loading (loader, TRUE, loader->priv->error);
+
+ if (async)
+ {
+ async_data_free (async);
+ }
+}
+
+static void
+async_failed (AsyncData *async,
+ GError *error)
+{
+ g_propagate_error (&async->loader->priv->error, error);
+ loader_load_completed_or_failed (async->loader, async);
+}
+
+static void
+close_input_stream_ready_cb (GInputStream *stream,
+ GAsyncResult *res,
+ AsyncData *async)
+{
+ GError *error = NULL;
+
+ DEBUG ({
+ g_print ("%s\n", G_STRFUNC);
+ });
+
+ /* check cancelled state manually */
+ if (g_cancellable_is_cancelled (async->cancellable))
+ {
+ async_data_free (async);
+ return;
+ }
+
+ DEBUG ({
+ g_print ("Finished closing input stream\n");
+ });
+
+ if (!g_input_stream_close_finish (stream, res, &error))
+ {
+ DEBUG ({
+ g_print ("Closing input stream error: %s\n", error->message);
+ });
+
+ async_failed (async, error);
+ return;
+ }
+
+ DEBUG ({
+ g_print ("Close output stream\n");
+ });
+
+ if (!g_output_stream_close (async->loader->priv->output,
+ async->cancellable, &error))
+ {
+ async_failed (async, error);
+ return;
+ }
+
+ /* Check if we needed some fallback char, if so, check if there was a
+ * previous error and if not set a fallback used error.
+ */
+ if ((gtk_source_document_output_stream_get_num_fallbacks (GTK_SOURCE_BUFFER_OUTPUT_STREAM
(async->loader->priv->output)) != 0) &&
+ async->loader->priv->error == NULL)
+ {
+ g_set_error_literal (&async->loader->priv->error,
+ GTK_SOURCE_FILE_ERROR,
+ GTK_SOURCE_FILE_ERROR_CONVERSION_FALLBACK,
+ "There was a conversion error and it was "
+ "needed to use a fallback char");
+ }
+
+ loader_load_completed_or_failed (async->loader, async);
+}
+
+static void
+write_complete (AsyncData *async)
+{
+ if (async->loader->priv->stream)
+ {
+ g_input_stream_close_async (G_INPUT_STREAM (async->loader->priv->stream),
+ G_PRIORITY_HIGH,
+ async->cancellable,
+ (GAsyncReadyCallback)close_input_stream_ready_cb,
+ async);
+ }
+}
+
+static void
+write_file_chunk (AsyncData *async)
+{
+ GtkSourceFileLoader *loader;
+ gssize bytes_written;
+ GError *error = NULL;
+
+ loader = async->loader;
+
+ /* We use sync methods on the buffer stream since it is in memory. Using
+ * async would be racy and we can end up with invalidated iters.
+ */
+ bytes_written = g_output_stream_write (loader->priv->output,
+ loader->priv->buffer,
+ async->read,
+ async->cancellable,
+ &error);
+
+ DEBUG ({
+ g_print ("Written: %" G_GSSIZE_FORMAT "\n", bytes_written);
+ });
+
+ if (bytes_written == -1)
+ {
+ DEBUG ({
+ g_print ("Write error: %s\n", error->message);
+ });
+
+ async_failed (async, error);
+ return;
+ }
+
+ /* FIXME: note that this signal blocks the read... check if it isn't a
+ * performance problem.
+ */
+ gtk_source_file_loader_loading (loader, FALSE, NULL);
+
+ read_file_chunk (async);
+}
+
+static void
+async_read_cb (GInputStream *stream,
+ GAsyncResult *res,
+ AsyncData *async)
+{
+ GtkSourceFileLoader *loader;
+ GError *error = NULL;
+
+ DEBUG ({
+ g_print ("%s\n", G_STRFUNC);
+ });
+
+ /* manually check cancelled state */
+ if (g_cancellable_is_cancelled (async->cancellable))
+ {
+ async_data_free (async);
+ return;
+ }
+
+ loader = async->loader;
+
+ async->read = g_input_stream_read_finish (stream, res, &error);
+
+ /* error occurred */
+ if (async->read == -1)
+ {
+ async_failed (async, error);
+ return;
+ }
+
+ /* Check for the extremely unlikely case where the file size overflows. */
+ if (loader->priv->bytes_read + async->read < loader->priv->bytes_read)
+ {
+ g_set_error (&loader->priv->error,
+ GTK_SOURCE_FILE_ERROR,
+ GTK_SOURCE_FILE_ERROR_TOO_BIG,
+ "File too big");
+
+ async_failed (async, loader->priv->error);
+ return;
+ }
+
+ if (loader->priv->guess_content_type_from_content &&
+ async->read > 0 &&
+ loader->priv->bytes_read == 0)
+ {
+ gchar *guessed;
+
+ guessed = g_content_type_guess (NULL,
+ (guchar *)loader->priv->buffer,
+ async->read,
+ NULL);
+
+ if (guessed != NULL)
+ {
+ g_file_info_set_attribute_string (loader->priv->info,
+ G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
+ guessed);
+
+ g_free (guessed);
+ }
+ }
+
+ /* Bump the size. */
+ loader->priv->bytes_read += async->read;
+
+ /* end of the file, we are done! */
+ if (async->read == 0)
+ {
+ /* flush the stream to ensure proper line ending detection */
+ g_output_stream_flush (loader->priv->output, NULL, NULL);
+
+ loader->priv->auto_detected_encoding =
+ gtk_source_document_output_stream_get_guessed (GTK_SOURCE_BUFFER_OUTPUT_STREAM
(loader->priv->output));
+
+ loader->priv->auto_detected_newline_type =
+ gtk_source_document_output_stream_detect_newline_type
(GTK_SOURCE_BUFFER_OUTPUT_STREAM (loader->priv->output));
+
+ write_complete (async);
+
+ return;
+ }
+
+ write_file_chunk (async);
+}
+
+static void
+read_file_chunk (AsyncData *async)
+{
+ GtkSourceFileLoader *loader;
+
+ loader = async->loader;
+
+ g_input_stream_read_async (loader->priv->stream,
+ loader->priv->buffer,
+ READ_CHUNK_SIZE,
+ G_PRIORITY_HIGH,
+ async->cancellable,
+ (GAsyncReadyCallback) async_read_cb,
+ async);
+}
+
+static GSList *
+get_candidate_encodings (GtkSourceFileLoader *loader)
+{
+ /* TODO replace this function */
+#if 0
+ const GtkSourceEncoding *metadata;
+ GSList *encodings;
+ gchar **enc_strv;
+
+ enc_strv = g_settings_get_strv (loader->priv->enc_settings,
+ GTK_SOURCE_SETTINGS_ENCODING_AUTO_DETECTED);
+
+ encodings = _gtk_source_encoding_strv_to_list ((const gchar * const *)enc_strv);
+ g_strfreev (enc_strv);
+
+ metadata = get_metadata_encoding (loader);
+ if (metadata != NULL)
+ {
+ encodings = g_slist_prepend (encodings, (gpointer)metadata);
+ }
+
+ return encodings;
+#endif
+}
+
+static GInputStream *
+compression_gzip_stream (GtkSourceFileLoader *loader)
+{
+ GZlibDecompressor *decompressor;
+ GInputStream *base_stream;
+
+ decompressor = g_zlib_decompressor_new (G_ZLIB_COMPRESSOR_FORMAT_GZIP);
+
+ base_stream = g_converter_input_stream_new (loader->priv->stream,
+ G_CONVERTER (decompressor));
+
+ g_object_unref (decompressor);
+
+ loader->priv->auto_detected_compression_type = GTK_SOURCE_COMPRESSION_TYPE_GZIP;
+
+ return base_stream;
+}
+
+static void
+start_stream_read (AsyncData *async)
+{
+ GSList *candidate_encodings;
+ GtkSourceFileLoader *loader;
+ GInputStream *base_stream = NULL;
+ GFileInfo *info;
+ gboolean ensure_trailing_newline;
+
+ loader = async->loader;
+ info = loader->priv->info;
+
+ if (g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE))
+ {
+ const gchar *content_type = g_file_info_get_content_type (info);
+
+ switch (gtk_source_utils_get_compression_type_from_content_type (content_type))
+ {
+ case GTK_SOURCE_COMPRESSION_TYPE_GZIP:
+ base_stream = compression_gzip_stream (loader);
+ break;
+
+ case GTK_SOURCE_COMPRESSION_TYPE_NONE:
+ /* NOOP */
+ break;
+ }
+ }
+
+ if (base_stream == NULL)
+ {
+ base_stream = g_object_ref (loader->priv->stream);
+ loader->priv->auto_detected_compression_type = GTK_SOURCE_COMPRESSION_TYPE_NONE;
+ }
+
+ g_object_unref (loader->priv->stream);
+ loader->priv->stream = base_stream;
+
+ /* Get the candidate encodings */
+ if (loader->priv->encoding == NULL)
+ {
+ candidate_encodings = get_candidate_encodings (loader);
+ }
+ else
+ {
+ candidate_encodings = g_slist_prepend (NULL, (gpointer)loader->priv->encoding);
+ }
+
+ /* TODO replace by a property */
+ ensure_trailing_newline = g_settings_get_boolean (loader->priv->editor_settings,
+ "ensure-trailing-newline");
+
+ /* Output stream */
+ loader->priv->output = gtk_source_document_output_stream_new (loader->priv->document,
+ candidate_encodings,
+ ensure_trailing_newline);
+
+ g_slist_free (candidate_encodings);
+
+ /* start reading */
+ read_file_chunk (async);
+}
+
+static void
+finish_query_info (AsyncData *async)
+{
+ GtkSourceFileLoader *loader;
+ GFileInfo *info;
+
+ loader = async->loader;
+ info = loader->priv->info;
+
+ if (g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_STANDARD_TYPE) &&
+ g_file_info_get_file_type (info) != G_FILE_TYPE_REGULAR)
+ {
+ g_set_error (&loader->priv->error,
+ G_IO_ERROR,
+ G_IO_ERROR_NOT_REGULAR_FILE,
+ "Not a regular file");
+
+ loader_load_completed_or_failed (loader, async);
+
+ return;
+ }
+
+ start_stream_read (async);
+}
+
+static void
+query_info_cb (GFile *source,
+ GAsyncResult *res,
+ AsyncData *async)
+{
+ GFileInfo *info;
+ GError *error = NULL;
+ GtkSourceFileLoaderPrivate *priv;
+
+ DEBUG ({
+ g_print ("%s\n", G_STRFUNC);
+ });
+
+ /* manually check the cancelled state */
+ if (g_cancellable_is_cancelled (async->cancellable))
+ {
+ async_data_free (async);
+ return;
+ }
+
+ priv = async->loader->priv;
+
+ /* finish the info query */
+ info = g_file_query_info_finish (priv->location, res, &error);
+
+ if (info == NULL)
+ {
+ /* propagate the error and clean up */
+ async_failed (async, error);
+ return;
+ }
+
+ priv->info = info;
+
+ finish_query_info (async);
+}
+
+static void
+mount_ready_callback (GFile *file,
+ GAsyncResult *res,
+ AsyncData *async)
+{
+ GError *error = NULL;
+ gboolean mounted;
+
+ DEBUG ({
+ g_print ("%s\n", G_STRFUNC);
+ });
+
+ /* manual check for cancelled state */
+ if (g_cancellable_is_cancelled (async->cancellable))
+ {
+ async_data_free (async);
+ return;
+ }
+
+ mounted = g_file_mount_enclosing_volume_finish (file, res, &error);
+
+ if (!mounted)
+ {
+ async_failed (async, error);
+ }
+ else
+ {
+ /* try again to open the file for reading */
+ open_async_read (async);
+ }
+}
+
+static void
+recover_not_mounted (AsyncData *async)
+{
+ GtkSourceBuffer *doc;
+ GMountOperation *mount_operation;
+
+ DEBUG ({
+ g_print ("%s\n", G_STRFUNC);
+ });
+
+ doc = gtk_source_file_loader_get_document (async->loader);
+ /* TODO use GtkSourceFile create mount function */
+ mount_operation = _gtk_source_document_create_mount_operation (doc);
+
+ async->tried_mount = TRUE;
+ g_file_mount_enclosing_volume (async->loader->priv->location,
+ G_MOUNT_MOUNT_NONE,
+ mount_operation,
+ async->cancellable,
+ (GAsyncReadyCallback) mount_ready_callback,
+ async);
+
+ g_object_unref (mount_operation);
+}
+
+static void
+async_read_ready_callback (GObject *source,
+ GAsyncResult *res,
+ AsyncData *async)
+{
+ GError *error = NULL;
+ GtkSourceFileLoader *loader;
+
+ DEBUG ({
+ g_print ("%s\n", G_STRFUNC);
+ });
+
+ /* manual check for cancelled state */
+ if (g_cancellable_is_cancelled (async->cancellable))
+ {
+ async_data_free (async);
+ return;
+ }
+
+ loader = async->loader;
+
+ loader->priv->stream = G_INPUT_STREAM (g_file_read_finish (loader->priv->location, res, &error));
+
+ if (error != NULL)
+ {
+ if (error->code == G_IO_ERROR_NOT_MOUNTED && !async->tried_mount)
+ {
+ recover_not_mounted (async);
+ g_error_free (error);
+ return;
+ }
+
+ g_propagate_error (&loader->priv->error, error);
+ gtk_source_file_loader_loading (loader, TRUE, loader->priv->error);
+
+ async_data_free (async);
+ return;
+ }
+
+ /* Get the file info: note we cannot use
+ * g_file_input_stream_query_info_async since it is not able to get the
+ * content type etc, beside it is not supported by gvfs.
+ * Using the file instead of the stream is slightly racy, but for
+ * loading this is not too bad...
+ */
+ g_file_query_info_async (loader->priv->location,
+ LOADER_QUERY_ATTRIBUTES,
+ G_FILE_QUERY_INFO_NONE,
+ G_PRIORITY_HIGH,
+ async->cancellable,
+ (GAsyncReadyCallback) query_info_cb,
+ async);
+}
+
+static void
+open_async_read (AsyncData *async)
+{
+ g_file_read_async (async->loader->priv->location,
+ G_PRIORITY_HIGH,
+ async->cancellable,
+ (GAsyncReadyCallback) async_read_ready_callback,
+ async);
+}
+
+void
+gtk_source_file_loader_loading (GtkSourceFileLoader *loader,
+ gboolean completed,
+ GError *error)
+{
+ /* The object will be unrefed in the callback of the loading signal
+ * (when completed == TRUE), so we need to prevent finalization.
+ */
+ if (completed)
+ {
+ g_object_ref (loader);
+ }
+
+ g_signal_emit (loader, signals[LOADING], 0, completed, error);
+
+ if (completed)
+ {
+ if (error == NULL)
+ {
+ DEBUG ({
+ g_print ("load completed\n");
+ });
+ }
+ else
+ {
+ DEBUG ({
+ g_print ("load failed\n");
+ });
+ }
+
+ g_object_unref (loader);
+ }
+}
+
+void
+gtk_source_file_loader_load (GtkSourceFileLoader *loader)
+{
+ AsyncData *async;
+
+ DEBUG ({
+ g_print ("%s\n", G_STRFUNC);
+ });
+
+ g_return_if_fail (GTK_SOURCE_IS_FILE_LOADER (loader));
+
+ /* the loader can be used just once, then it must be thrown away */
+ g_return_if_fail (loader->priv->used == FALSE);
+ loader->priv->used = TRUE;
+
+ /* make sure no load operation is currently running */
+ g_return_if_fail (loader->priv->cancellable == NULL);
+
+ /* loading start */
+ gtk_source_file_loader_loading (loader, FALSE, NULL);
+
+ loader->priv->cancellable = g_cancellable_new ();
+ async = async_data_new (loader);
+
+ if (loader->priv->stream)
+ {
+ loader->priv->guess_content_type_from_content = TRUE;
+ loader->priv->info = g_file_info_new ();
+
+ start_stream_read (async);
+ }
+ else
+ {
+ open_async_read (async);
+ }
+}
+
+gboolean
+gtk_source_file_loader_cancel (GtkSourceFileLoader *loader)
+{
+ DEBUG ({
+ g_print ("%s\n", G_STRFUNC);
+ });
+
+ g_return_val_if_fail (GTK_SOURCE_IS_FILE_LOADER (loader), FALSE);
+
+ if (loader->priv->cancellable == NULL)
+ {
+ return FALSE;
+ }
+
+ g_cancellable_cancel (loader->priv->cancellable);
+
+ g_set_error (&loader->priv->error,
+ G_IO_ERROR,
+ G_IO_ERROR_CANCELLED,
+ "Operation cancelled");
+
+ loader_load_completed_or_failed (loader, NULL);
+
+ return TRUE;
+}
+
+GtkSourceBuffer *
+gtk_source_file_loader_get_buffer (GtkSourceFileLoader *loader)
+{
+ g_return_val_if_fail (GTK_SOURCE_IS_FILE_LOADER (loader), NULL);
+
+ return loader->priv->document;
+}
+
+GFile *
+gtk_source_file_loader_get_location (GtkSourceFileLoader *loader)
+{
+ g_return_val_if_fail (GTK_SOURCE_IS_FILE_LOADER (loader), NULL);
+
+ if (loader->priv->location != NULL)
+ {
+ return g_object_ref (loader->priv->location);
+ }
+ else
+ {
+ return NULL;
+ }
+}
+
+goffset
+gtk_source_file_loader_get_bytes_read (GtkSourceFileLoader *loader)
+{
+ g_return_val_if_fail (GTK_SOURCE_IS_FILE_LOADER (loader), 0);
+
+ return loader->priv->bytes_read;
+}
+
+const GtkSourceEncoding *
+gtk_source_file_loader_get_encoding (GtkSourceFileLoader *loader)
+{
+ g_return_val_if_fail (GTK_SOURCE_IS_FILE_LOADER (loader), NULL);
+
+ if (loader->priv->encoding != NULL)
+ {
+ return loader->priv->encoding;
+ }
+
+ g_return_val_if_fail (loader->priv->auto_detected_encoding != NULL,
+ gtk_source_encoding_get_current ());
+
+ return loader->priv->auto_detected_encoding;
+}
+
+GtkSourceNewlineType
+gtk_source_file_loader_get_newline_type (GtkSourceFileLoader *loader)
+{
+ g_return_val_if_fail (GTK_SOURCE_IS_FILE_LOADER (loader),
+ GTK_SOURCE_NEWLINE_TYPE_LF);
+
+ return loader->priv->auto_detected_newline_type;
+}
+
+GtkSourceCompressionType
+gtk_source_file_loader_get_compression_type (GtkSourceFileLoader *loader)
+{
+ g_return_val_if_fail (GTK_SOURCE_IS_FILE_LOADER (loader),
+ GTK_SOURCE_COMPRESSION_TYPE_NONE);
+
+ return loader->priv->auto_detected_compression_type;
+}
+
+GFileInfo *
+gtk_source_file_loader_get_info (GtkSourceFileLoader *loader)
+{
+ g_return_val_if_fail (GTK_SOURCE_IS_FILE_LOADER (loader), NULL);
+
+ return loader->priv->info;
+}
diff --git a/gtksourceview/gtksourcefileloader.h b/gtksourceview/gtksourcefileloader.h
new file mode 100644
index 0000000..5e29f3e
--- /dev/null
+++ b/gtksourceview/gtksourcefileloader.h
@@ -0,0 +1,115 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; coding: utf-8 -*- */
+/* gtksourcefileloader.h
+ * This file is part of GtkSourceView
+ *
+ * Copyright (C) 2005 - Paolo Maggi
+ * Copyright (C) 2007 - Paolo Maggi, Steve Frécinaux
+ * Copyright (C) 2008 - Jesse van den Kieboom
+ * Copyright (C) 2014 - Sébastien Wilmet
+ *
+ * GtkSourceView 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 2.1 of the License, or (at your option) any later version.
+ *
+ * GtkSourceView 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __GTK_SOURCE_FILE_LOADER_H__
+#define __GTK_SOURCE_FILE_LOADER_H__
+
+#include <gtk/gtk.h>
+#include "gtksourcetypes.h"
+#include "gtksourcetypes-private.h"
+
+G_BEGIN_DECLS
+
+#define GTK_SOURCE_TYPE_FILE_LOADER (gtk_source_file_loader_get_type())
+#define GTK_SOURCE_FILE_LOADER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),
GTK_SOURCE_TYPE_FILE_LOADER, GtkSourceFileLoader))
+#define GTK_SOURCE_FILE_LOADER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),
GTK_SOURCE_TYPE_FILE_LOADER, GtkSourceFileLoaderClass))
+#define GTK_SOURCE_IS_FILE_LOADER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),
GTK_SOURCE_TYPE_FILE_LOADER))
+#define GTK_SOURCE_IS_FILE_LOADER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),
GTK_SOURCE_TYPE_FILE_LOADER))
+#define GTK_SOURCE_FILE_LOADER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj),
GTK_SOURCE_TYPE_FILE_LOADER, GtkSourceFileLoaderClass))
+
+typedef struct _GtkSourceFileLoaderClass GtkSourceFileLoaderClass;
+typedef struct _GtkSourceFileLoaderPrivate GtkSourceFileLoaderPrivate;
+
+struct _GtkSourceFileLoader
+{
+ GObject parent;
+
+ GtkSourceFileLoaderPrivate *priv;
+};
+
+struct _GtkSourceFileLoaderClass
+{
+ GObjectClass parent_class;
+
+ /* Signals */
+ void (* loading) (GtkSourceFileLoader *loader,
+ gboolean completed,
+ const GError *error);
+};
+
+G_GNUC_INTERNAL
+GType gtk_source_file_loader_get_type (void) G_GNUC_CONST;
+
+/* If enconding == NULL, the encoding will be autodetected */
+G_GNUC_INTERNAL
+GtkSourceFileLoader *gtk_source_file_loader_new (GtkSourceBuffer *buffer,
+ GFile *location,
+ const GtkSourceEncoding *encoding);
+
+G_GNUC_INTERNAL
+void gtk_source_file_loader_loading (GtkSourceFileLoader *loader,
+ gboolean completed,
+ GError *error);
+
+G_GNUC_INTERNAL
+void gtk_source_file_loader_load (GtkSourceFileLoader *loader);
+
+G_GNUC_INTERNAL
+GtkSourceFileLoader *gtk_source_file_loader_new_from_stream (GtkSourceBuffer *buffer,
+ GInputStream *stream,
+ const GtkSourceEncoding *encoding);
+
+G_GNUC_INTERNAL
+gboolean gtk_source_file_loader_cancel (GtkSourceFileLoader *loader);
+
+G_GNUC_INTERNAL
+GtkSourceBuffer *gtk_source_file_loader_get_buffer (GtkSourceFileLoader *loader);
+
+/* Returns STDIN_URI if loading from stdin */
+#define STDIN_URI "stdin:"
+G_GNUC_INTERNAL
+GFile *gtk_source_file_loader_get_location (GtkSourceFileLoader *loader);
+
+G_GNUC_INTERNAL
+const GtkSourceEncoding *gtk_source_file_loader_get_encoding (GtkSourceFileLoader *loader);
+
+G_GNUC_INTERNAL
+GtkSourceNewlineType gtk_source_file_loader_get_newline_type (GtkSourceFileLoader *loader);
+
+G_GNUC_INTERNAL
+GtkSourceCompressionType gtk_source_file_loader_get_compression_type
+ (GtkSourceFileLoader *loader);
+
+G_GNUC_INTERNAL
+goffset gtk_source_file_loader_get_bytes_read (GtkSourceFileLoader *loader);
+
+/* You can get from the info: content_type, time_modified, standard_size,
+ * access_can_write and also the metadata.
+ */
+G_GNUC_INTERNAL
+GFileInfo *gtk_source_file_loader_get_info (GtkSourceFileLoader *loader);
+
+G_END_DECLS
+
+#endif /* __GTK_SOURCE_FILE_LOADER_H__ */
diff --git a/gtksourceview/gtksourcetypes-private.h b/gtksourceview/gtksourcetypes-private.h
index 9107afe..a1e2aa0 100644
--- a/gtksourceview/gtksourcetypes-private.h
+++ b/gtksourceview/gtksourcetypes-private.h
@@ -32,6 +32,7 @@ typedef struct _GtkSourceCompletionContainer GtkSourceCompletionContainer;
typedef struct _GtkSourceCompletionModel GtkSourceCompletionModel;
typedef struct _GtkSourceContextEngine GtkSourceContextEngine;
typedef struct _GtkSourceEngine GtkSourceEngine;
+typedef struct _GtkSourceFileLoader GtkSourceFileLoader;
typedef struct _GtkSourceFileSaver GtkSourceFileSaver;
typedef struct _GtkSourceGutterRendererLines GtkSourceGutterRendererLines;
typedef struct _GtkSourceGutterRendererMarks GtkSourceGutterRendererMarks;
diff --git a/po/POTFILES.in b/po/POTFILES.in
index daad76a..452ac4b 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -127,6 +127,7 @@ gtksourceview/gtksourcecompletionmodel.c
gtksourceview/gtksourcecontextengine.c
gtksourceview/gtksourceencoding.c
gtksourceview/gtksourcefile.c
+gtksourceview/gtksourcefileloader.c
gtksourceview/gtksourcefilesaver.c
gtksourceview/gtksourcegutter.c
gtksourceview/gtksourcegutterrenderer.c
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