358 lines
9.4 KiB
C
358 lines
9.4 KiB
C
/*
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* xedit-document-loader.c
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* This file is part of xedit
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*
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* Copyright (C) 2005 - Paolo Maggi
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* Copyright (C) 2007 - Paolo Maggi, Steve Frécinaux
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/*
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* Modified by the xedit Team, 2005-2007. See the AUTHORS file for a
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* list of people on the xedit Team.
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* See the ChangeLog files for a list of changes.
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*
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* $Id$
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <glib/gi18n.h>
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#include "xedit-document-loader.h"
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#include "xedit-debug.h"
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#include "xedit-metadata-manager.h"
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#include "xedit-utils.h"
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#include "xedit-marshal.h"
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#include "xedit-enum-types.h"
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/* Those are for the the xedit_document_loader_new() factory */
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#include "xedit-gio-document-loader.h"
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G_DEFINE_ABSTRACT_TYPE(XeditDocumentLoader, xedit_document_loader, G_TYPE_OBJECT)
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/* Signals */
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enum {
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LOADING,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0 };
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/* Properties */
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enum
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{
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PROP_0,
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PROP_DOCUMENT,
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PROP_URI,
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PROP_ENCODING,
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PROP_NEWLINE_TYPE
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};
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static void
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xedit_document_loader_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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XeditDocumentLoader *loader = XEDIT_DOCUMENT_LOADER (object);
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switch (prop_id)
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{
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case PROP_DOCUMENT:
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g_return_if_fail (loader->document == NULL);
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loader->document = g_value_get_object (value);
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break;
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case PROP_URI:
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g_return_if_fail (loader->uri == NULL);
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loader->uri = g_value_dup_string (value);
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break;
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case PROP_ENCODING:
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g_return_if_fail (loader->encoding == NULL);
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loader->encoding = g_value_get_boxed (value);
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break;
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case PROP_NEWLINE_TYPE:
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loader->auto_detected_newline_type = g_value_get_enum (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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xedit_document_loader_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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XeditDocumentLoader *loader = XEDIT_DOCUMENT_LOADER (object);
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switch (prop_id)
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{
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case PROP_DOCUMENT:
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g_value_set_object (value, loader->document);
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break;
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case PROP_URI:
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g_value_set_string (value, loader->uri);
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break;
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case PROP_ENCODING:
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g_value_set_boxed (value, xedit_document_loader_get_encoding (loader));
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break;
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case PROP_NEWLINE_TYPE:
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g_value_set_enum (value, loader->auto_detected_newline_type);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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xedit_document_loader_finalize (GObject *object)
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{
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XeditDocumentLoader *loader = XEDIT_DOCUMENT_LOADER (object);
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g_free (loader->uri);
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if (loader->info)
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g_object_unref (loader->info);
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G_OBJECT_CLASS (xedit_document_loader_parent_class)->finalize (object);
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}
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static void
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xedit_document_loader_dispose (GObject *object)
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{
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XeditDocumentLoader *loader = XEDIT_DOCUMENT_LOADER (object);
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if (loader->info != NULL)
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{
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g_object_unref (loader->info);
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loader->info = NULL;
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}
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G_OBJECT_CLASS (xedit_document_loader_parent_class)->dispose (object);
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}
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static void
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xedit_document_loader_class_init (XeditDocumentLoaderClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = xedit_document_loader_finalize;
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object_class->dispose = xedit_document_loader_dispose;
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object_class->get_property = xedit_document_loader_get_property;
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object_class->set_property = xedit_document_loader_set_property;
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g_object_class_install_property (object_class,
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PROP_DOCUMENT,
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g_param_spec_object ("document",
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"Document",
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"The XeditDocument this XeditDocumentLoader is associated with",
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XEDIT_TYPE_DOCUMENT,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (object_class,
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PROP_URI,
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g_param_spec_string ("uri",
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"URI",
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"The URI this XeditDocumentLoader loads the document from",
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"",
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY));
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g_object_class_install_property (object_class,
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PROP_ENCODING,
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g_param_spec_boxed ("encoding",
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"Encoding",
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"The encoding of the saved file",
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XEDIT_TYPE_ENCODING,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (object_class, PROP_NEWLINE_TYPE,
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g_param_spec_enum ("newline-type",
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"Newline type",
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"The accepted types of line ending",
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XEDIT_TYPE_DOCUMENT_NEWLINE_TYPE,
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XEDIT_DOCUMENT_NEWLINE_TYPE_LF,
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G_PARAM_READWRITE |
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G_PARAM_STATIC_NAME |
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G_PARAM_STATIC_BLURB));
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signals[LOADING] =
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g_signal_new ("loading",
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (XeditDocumentLoaderClass, loading),
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NULL, NULL,
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xedit_marshal_VOID__BOOLEAN_POINTER,
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G_TYPE_NONE,
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2,
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G_TYPE_BOOLEAN,
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G_TYPE_POINTER);
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}
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static void
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xedit_document_loader_init (XeditDocumentLoader *loader)
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{
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loader->used = FALSE;
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loader->auto_detected_newline_type = XEDIT_DOCUMENT_NEWLINE_TYPE_DEFAULT;
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}
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void
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xedit_document_loader_loading (XeditDocumentLoader *loader,
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gboolean completed,
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GError *error)
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{
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/* the object will be unrefed in the callback of the loading signal
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* (when completed == TRUE), so we need to prevent finalization.
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*/
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if (completed)
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{
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g_object_ref (loader);
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}
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g_signal_emit (loader, signals[LOADING], 0, completed, error);
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if (completed)
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{
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if (error == NULL)
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xedit_debug_message (DEBUG_LOADER, "load completed");
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else
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xedit_debug_message (DEBUG_LOADER, "load failed");
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g_object_unref (loader);
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}
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}
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/* This is a factory method that returns an appopriate loader
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* for the given uri.
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*/
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XeditDocumentLoader *
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xedit_document_loader_new (XeditDocument *doc,
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const gchar *uri,
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const XeditEncoding *encoding)
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{
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XeditDocumentLoader *loader;
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GType loader_type;
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g_return_val_if_fail (XEDIT_IS_DOCUMENT (doc), NULL);
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/* At the moment we just use gio loader in all cases...
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* In the future it would be great to have a PolicyKit
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* loader to get permission to save systen files etc */
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loader_type = XEDIT_TYPE_GIO_DOCUMENT_LOADER;
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loader = XEDIT_DOCUMENT_LOADER (g_object_new (loader_type,
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"document", doc,
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"uri", uri,
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"encoding", encoding,
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NULL));
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return loader;
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}
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/* If enconding == NULL, the encoding will be autodetected */
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void
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xedit_document_loader_load (XeditDocumentLoader *loader)
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{
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xedit_debug (DEBUG_LOADER);
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g_return_if_fail (XEDIT_IS_DOCUMENT_LOADER (loader));
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/* the loader can be used just once, then it must be thrown away */
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g_return_if_fail (loader->used == FALSE);
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loader->used = TRUE;
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XEDIT_DOCUMENT_LOADER_GET_CLASS (loader)->load (loader);
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}
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gboolean
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xedit_document_loader_cancel (XeditDocumentLoader *loader)
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{
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xedit_debug (DEBUG_LOADER);
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g_return_val_if_fail (XEDIT_IS_DOCUMENT_LOADER (loader), FALSE);
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return XEDIT_DOCUMENT_LOADER_GET_CLASS (loader)->cancel (loader);
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}
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XeditDocument *
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xedit_document_loader_get_document (XeditDocumentLoader *loader)
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{
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g_return_val_if_fail (XEDIT_IS_DOCUMENT_LOADER (loader), NULL);
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return loader->document;
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}
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/* Returns STDIN_URI if loading from stdin */
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const gchar *
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xedit_document_loader_get_uri (XeditDocumentLoader *loader)
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{
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g_return_val_if_fail (XEDIT_IS_DOCUMENT_LOADER (loader), NULL);
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return loader->uri;
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}
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goffset
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xedit_document_loader_get_bytes_read (XeditDocumentLoader *loader)
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{
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g_return_val_if_fail (XEDIT_IS_DOCUMENT_LOADER (loader), 0);
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return XEDIT_DOCUMENT_LOADER_GET_CLASS (loader)->get_bytes_read (loader);
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}
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const XeditEncoding *
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xedit_document_loader_get_encoding (XeditDocumentLoader *loader)
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{
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g_return_val_if_fail (XEDIT_IS_DOCUMENT_LOADER (loader), NULL);
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if (loader->encoding != NULL)
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return loader->encoding;
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g_return_val_if_fail (loader->auto_detected_encoding != NULL,
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xedit_encoding_get_current ());
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return loader->auto_detected_encoding;
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}
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XeditDocumentNewlineType
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xedit_document_loader_get_newline_type (XeditDocumentLoader *loader)
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{
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g_return_val_if_fail (XEDIT_IS_DOCUMENT_LOADER (loader),
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XEDIT_DOCUMENT_NEWLINE_TYPE_LF);
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return loader->auto_detected_newline_type;
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}
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GFileInfo *
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xedit_document_loader_get_info (XeditDocumentLoader *loader)
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{
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g_return_val_if_fail (XEDIT_IS_DOCUMENT_LOADER (loader), NULL);
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return loader->info;
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}
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