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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
/*
* Copyright (C) 2005, Red Hat, Inc.
*
* 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, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ev-document-types.h"
/* The various document type backends: */
#include "ev-poppler.h"
#include "pixbuf-document.h"
#include "tiff-document.h"
#include "ps-document.h"
#ifdef ENABLE_DVI
#include "dvi-document.h"
#endif
#ifdef ENABLE_DJVU
#include "djvu-document.h"
#endif
#include <string.h>
#include <glib/gi18n.h>
#include <libgnomevfs/gnome-vfs-mime-utils.h>
#include <libgnomevfs/gnome-vfs-file-info.h>
#include <libgnomevfs/gnome-vfs-ops.h>
typedef struct _EvDocumentType EvDocumentType;
struct _EvDocumentType
{
const char *mime_type;
GType (*document_type_factory_callback)();
};
const EvDocumentType document_types[] = {
/* PDF: */
{"application/pdf", pdf_document_get_type},
/* Postscript: */
{"application/postscript", ps_document_get_type},
{"application/x-gzpostscript", ps_document_get_type},
{"image/x-eps", ps_document_get_type},
#ifdef ENABLE_TIFF
/* Tiff: */
{"image/tiff", tiff_document_get_type},
#endif
#ifdef ENABLE_DJVU
/* djvu: */
{"image/vnd.djvu", djvu_document_get_type},
#endif
#ifdef ENABLE_DVI
/* dvi: */
{"application/x-dvi", dvi_document_get_type},
#endif
};
/* Would be nice to have this in gdk-pixbuf */
static gboolean
mime_type_supported_by_gdk_pixbuf (const gchar *mime_type)
{
GSList *formats, *list;
gboolean retval = FALSE;
formats = gdk_pixbuf_get_formats ();
list = formats;
while (list) {
GdkPixbufFormat *format = list->data;
int i;
gchar **mime_types;
if (gdk_pixbuf_format_is_disabled (format))
continue;
mime_types = gdk_pixbuf_format_get_mime_types (format);
for (i = 0; mime_types[i] != NULL; i++) {
if (strcmp (mime_types[i], mime_type) == 0) {
retval = TRUE;
break;
}
}
if (retval)
break;
list = list->next;
}
g_slist_free (formats);
return retval;
}
static GType
ev_document_type_from_from_mime (const char *mime_type)
{
int i;
g_return_val_if_fail (mime_type, G_TYPE_INVALID);
for (i = 0; i < G_N_ELEMENTS (document_types); i++) {
if (strcmp (mime_type, document_types[i].mime_type) == 0) {
g_assert (document_types[i].document_type_factory_callback != NULL);
return document_types[i].document_type_factory_callback();
}
}
if (mime_type_supported_by_gdk_pixbuf (mime_type)) {
return pixbuf_document_get_type ();
}
return G_TYPE_INVALID;
}
/**
* ev_document_type_get_type:
* @uri: String with uri
* @slow: Do we need to check slow gnome-vfs mime type
* @mime_type: If we've found handled type, the mime_type string is returned here.
* @error: Information about error occured
*
* Return value: G_TYPE_INVALID on error, G_TYPE_NONE when we are not sure about
* mime type, and type of EvDocument implementation when we've found document.
**/
static GType
ev_document_type_get_type (const char *uri, gboolean slow, gchar **mime_type, GError **error)
{
GnomeVFSFileInfo *info;
GnomeVFSResult result;
GType type = G_TYPE_INVALID;
info = gnome_vfs_file_info_new ();
result = gnome_vfs_get_file_info (uri, info,
GNOME_VFS_FILE_INFO_GET_MIME_TYPE |
GNOME_VFS_FILE_INFO_FOLLOW_LINKS |
(slow ? GNOME_VFS_FILE_INFO_FORCE_SLOW_MIME_TYPE : 0));
if (result != GNOME_VFS_OK) {
g_set_error (error,
EV_DOCUMENT_ERROR,
0,
gnome_vfs_result_to_string (result));
gnome_vfs_file_info_unref (info);
return G_TYPE_INVALID;
}
if (info->mime_type == NULL) {
g_set_error (error,
EV_DOCUMENT_ERROR,
0,
_("Unknown MIME Type"));
gnome_vfs_file_info_unref (info);
return slow ? G_TYPE_INVALID : G_TYPE_NONE;
}
type = ev_document_type_from_from_mime (info->mime_type);
if (type == G_TYPE_INVALID) {
g_set_error (error,
EV_DOCUMENT_ERROR,
0,
_("Unhandled MIME type: '%s'"), info->mime_type);
gnome_vfs_file_info_unref (info);
return slow ? G_TYPE_INVALID : G_TYPE_NONE;
}
if (mime_type != NULL) {
*mime_type = g_strdup (info->mime_type);
}
gnome_vfs_file_info_unref (info);
return type;
}
GType
ev_document_type_lookup (const char *uri, gchar **mime_type, GError **error)
{
GType type = G_TYPE_INVALID;
type = ev_document_type_get_type (uri, FALSE, mime_type, error);
if (type != G_TYPE_NONE)
return type;
if (error) {
g_error_free (*error);
*error = NULL;
}
type = ev_document_type_get_type (uri, TRUE, mime_type, error);
return type;
}
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