X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=libdocument%2Fev-document-factory.c;h=0ace5ec8d286337df3b3d4cc5b320087b4b8f760;hb=eb80ecd1f7aa6ff57d2a3324c691274745ca4ed0;hp=4adec66759b3ee723f2f43b8575b902e39dcbb57;hpb=b346c5664d27a77e9068ea91eaf9a0c0d6210b0f;p=evince.git diff --git a/libdocument/ev-document-factory.c b/libdocument/ev-document-factory.c index 4adec667..0ace5ec8 100644 --- a/libdocument/ev-document-factory.c +++ b/libdocument/ev-document-factory.c @@ -14,7 +14,7 @@ * * 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. + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * */ @@ -22,123 +22,34 @@ #include "config.h" #endif -#include "ev-document-factory.h" - -/* The various document type backends: */ -#ifdef ENABLE_PDF -#include "ev-poppler.h" -#endif -#ifdef ENABLE_PS -#include "ps-document.h" -#endif -#ifdef ENABLE_TIFF -#include "tiff-document.h" -#endif -#ifdef ENABLE_DVI -#include "dvi-document.h" -#endif -#ifdef ENABLE_PIXBUF -#include "pixbuf-document.h" -#endif -#ifdef ENABLE_DJVU -#include "djvu-document.h" -#endif -#ifdef ENABLE_COMICS -#include "comics-document.h" -#endif -#ifdef ENABLE_IMPRESS -#include "impress-document.h" -#endif - #include + +#include #include -#include -#include -#include -#include -#include +#include +#include +#include "ev-backends-manager.h" +#include "ev-document-factory.h" #include "ev-file-helpers.h" -typedef struct _EvDocumentType EvDocumentType; -struct _EvDocumentType { - const char *mime_type; - EvCompressionType compression; - EvBackend backend; - GType (*document_type_factory_callback)(); -}; - -const EvDocumentType document_types[] = { -#ifdef ENABLE_PDF - /* PDF: */ - {"application/pdf", EV_COMPRESSION_NONE, EV_BACKEND_PDF, pdf_document_get_type}, - {"application/x-bzpdf", EV_COMPRESSION_BZIP2, EV_BACKEND_PDF, pdf_document_get_type}, - {"application/x-gzpdf", EV_COMPRESSION_GZIP, EV_BACKEND_PDF, pdf_document_get_type}, -#endif - -#ifdef ENABLE_PS - /* Postscript: */ - {"application/postscript", EV_COMPRESSION_NONE, EV_BACKEND_PS, ps_document_get_type}, - {"application/x-bzpostscript", EV_COMPRESSION_BZIP2, EV_BACKEND_PS, ps_document_get_type}, - {"application/x-gzpostscript", EV_COMPRESSION_GZIP, EV_BACKEND_PS, ps_document_get_type}, - {"image/x-eps", EV_COMPRESSION_NONE, EV_BACKEND_PS, ps_document_get_type}, - {"image/x-bzeps", EV_COMPRESSION_BZIP2, EV_BACKEND_PS, ps_document_get_type}, - {"image/x-gzeps", EV_COMPRESSION_GZIP, EV_BACKEND_PS, ps_document_get_type}, -#endif - -#ifdef ENABLE_TIFF - /* Tiff: */ - {"image/tiff", EV_COMPRESSION_NONE, EV_BACKEND_TIFF, tiff_document_get_type}, -#endif - -#ifdef ENABLE_DJVU - /* djvu: */ - {"image/vnd.djvu", EV_COMPRESSION_NONE, EV_BACKEND_DJVU, djvu_document_get_type}, -#endif - -#ifdef ENABLE_DVI - /* dvi: */ - {"application/x-dvi", EV_COMPRESSION_NONE, EV_BACKEND_DVI, dvi_document_get_type}, -#endif - -#ifdef ENABLE_COMICS - /* cbr/cbz: */ - {"application/x-cbr", EV_COMPRESSION_NONE, EV_BACKEND_COMICS, comics_document_get_type}, - {"application/x-cbz", EV_COMPRESSION_NONE, EV_BACKEND_COMICS, comics_document_get_type}, -#endif - -#ifdef ENABLE_IMPRESS - /* Impress slides: */ - {"application/vnd.sun.xml.impress", EV_COMPRESSION_NONE, EV_BACKEND_IMPRESS, impress_document_get_type}, - {"application/vnd.oasis.opendocument.presentation", EV_COMPRESSION_NONE, EV_BACKEND_IMPRESS, impress_document_get_type}, -#endif - -}; - #ifdef ENABLE_PIXBUF - static GList* gdk_pixbuf_mime_type_list () { GSList *formats, *list; - GList *result; + GList *result = NULL; formats = gdk_pixbuf_get_formats (); - result = NULL; - for (list = formats; list != NULL; list = list->next) { GdkPixbufFormat *format = list->data; - int i; - gchar **mime_types; + 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++) { - result = g_list_append (result, mime_types[i]); - } + result = g_list_prepend (result, mime_types); } g_slist_free (formats); @@ -152,159 +63,120 @@ mime_type_supported_by_gdk_pixbuf (const gchar *mime_type) GList *mime_types; GList *list; gboolean retval = FALSE; - + mime_types = gdk_pixbuf_mime_type_list (); for (list = mime_types; list; list = list->next) { - if (strcmp ((char *)list->data, mime_type) == 0) { - retval = TRUE; - break; + gchar **mtypes = (gchar **)list->data; + const gchar *mtype; + gint i = 0; + + while ((mtype = mtypes[i++])) { + if (strcmp (mtype, mime_type) == 0) { + retval = TRUE; + break; + } } } - - g_list_foreach (mime_types, (GFunc)g_free, NULL); + + g_list_foreach (mime_types, (GFunc)g_strfreev, NULL); g_list_free (mime_types); return retval; } -#endif +#endif /* ENABLE_PIXBUF */ -static EvDocument * -ev_document_factory_get_from_mime (const gchar *mime_type, - EvCompressionType *compression) +static EvCompressionType +get_compression_from_mime_type (const gchar *mime_type) { - int i; - GType type = G_TYPE_INVALID; - EvDocument *document = NULL; + gchar type[3]; + gchar *p; - *compression = EV_COMPRESSION_NONE; - - 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); - type = document_types[i].document_type_factory_callback (); - *compression = document_types[i].compression; - break; - } - } -#ifdef ENABLE_PIXBUF - if (type == G_TYPE_INVALID && mime_type_supported_by_gdk_pixbuf (mime_type)) { - type = pixbuf_document_get_type (); - } -#endif - - if (type != G_TYPE_INVALID) { - document = g_object_new (type, NULL); - } - - return document; -} - -EvBackend -ev_document_factory_get_backend (EvDocument *document) -{ - int i; + if (!(p = g_strrstr (mime_type, "/"))) + return EV_COMPRESSION_NONE; - for (i = 0; i < G_N_ELEMENTS (document_types); i++) { - GType type = document_types[i].document_type_factory_callback (); - if (type == G_TYPE_FROM_INSTANCE (document)) { - return document_types[i].backend; - } + if (sscanf (++p, "x-%2s%*s", type) == 1) { + if (g_ascii_strcasecmp (type, "gz") == 0) + return EV_COMPRESSION_GZIP; + else if (g_ascii_strcasecmp (type, "bz") == 0) + return EV_COMPRESSION_BZIP2; } -#ifdef ENABLE_PIXBUF - if (G_TYPE_FROM_INSTANCE (document) == pixbuf_document_get_type ()) - return EV_BACKEND_PIXBUF; -#endif - g_assert_not_reached (); - - return 0; + return EV_COMPRESSION_NONE; } -static GList * -ev_document_factory_get_mime_types (EvBackend backend) -{ - GList *types = NULL; - int i; - -#ifdef ENABLE_PIXBUF - if (backend == EV_BACKEND_PIXBUF) { - return gdk_pixbuf_mime_type_list (); - } -#endif - - for (i = 0; i < G_N_ELEMENTS (document_types); i++) { - if (document_types[i].backend == backend) { - types = g_list_append (types, g_strdup (document_types[i].mime_type)); - } - } - - return types; -} - -static GList * -ev_document_factory_get_all_mime_types (void) -{ - GList *types = NULL; - int i; - - for (i = 0; i < G_N_ELEMENTS (document_types); i++) { - types = g_list_append (types, g_strdup (document_types[i].mime_type)); - } - -#ifdef ENABLE_PIXBUF - types = g_list_concat (types, gdk_pixbuf_mime_type_list ()); -#endif - - return types; -} +/* + * get_document_from_uri: + * @uri: the document URI + * @fast: whether to use fast MIME type detection + * @compression: a location to store the document's compression type + * @error: a #GError location to store an error, or %NULL + * + * Creates a #EvDocument instance for the document at @uri, using either + * fast or slow MIME type detection. If a document could be created, + * @compression is filled in with the document's compression type. + * On error, %NULL is returned and @error filled in. + * + * Returns: a new #EvDocument instance, or %NULL on error with @error filled in + */ static EvDocument * get_document_from_uri (const char *uri, - gboolean slow, + gboolean fast, EvCompressionType *compression, GError **error) { EvDocument *document = NULL; - GnomeVFSFileInfo *info; - GnomeVFSResult result; + gchar *mime_type = NULL; + GError *err = NULL; *compression = EV_COMPRESSION_NONE; - 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 NULL; - } - - if (info->mime_type == NULL) { - g_set_error (error, - EV_DOCUMENT_ERROR, - 0, - _("Unknown MIME Type")); - gnome_vfs_file_info_unref (info); + mime_type = ev_file_get_mime_type (uri, fast, &err); + + if (mime_type == NULL) { + g_free (mime_type); + + if (err == NULL) { + g_set_error_literal (error, + EV_DOCUMENT_ERROR, + EV_DOCUMENT_ERROR_INVALID, + _("Unknown MIME Type")); + } else { + g_propagate_error (error, err); + } + return NULL; } - document = ev_document_factory_get_from_mime (info->mime_type, compression); - + document = ev_backends_manager_get_document (mime_type); + +#ifdef ENABLE_PIXBUF + if (!document && mime_type_supported_by_gdk_pixbuf (mime_type)) + document = ev_backends_manager_get_document ("image/*"); +#endif /* ENABLE_PIXBUF */ + if (document == NULL) { + gchar *content_type, *mime_desc = NULL; + + content_type = g_content_type_from_mime_type (mime_type); + if (content_type) + mime_desc = g_content_type_get_description (content_type); + g_set_error (error, EV_DOCUMENT_ERROR, - 0, - _("Unhandled MIME type: “%s”"), info->mime_type); - gnome_vfs_file_info_unref (info); + EV_DOCUMENT_ERROR_INVALID, + _("File type %s (%s) is not supported"), + mime_desc ? mime_desc : "-", mime_type); + g_free (mime_desc); + g_free (content_type); + g_free (mime_type); + return NULL; } - gnome_vfs_file_info_unref (info); + *compression = get_compression_from_mime_type (mime_type); + + g_free (mime_type); return document; } @@ -312,20 +184,26 @@ get_document_from_uri (const char *uri, static void free_uncompressed_uri (gchar *uri_unc) { - gchar *filename; - if (!uri_unc) return; - filename = g_filename_from_uri (uri_unc, NULL, NULL); - if (!filename) - return; - - g_unlink (filename); - g_free (filename); + ev_tmp_uri_unlink (uri_unc); g_free (uri_unc); } +/** + * ev_document_factory_get_document: + * @uri: an URI + * @error: a #GError location to store an error, or %NULL + * + * Creates a #EvDocument for the document at @uri; or, if no backend handling + * the document's type is found, or an error occurred on opening the document, + * returns %NULL and fills in @error. + * If the document is encrypted, it is returned but also @error is set to + * %EV_DOCUMENT_ERROR_ENCRYPTED. + * + * Returns: a new #EvDocument, or %NULL. + */ EvDocument * ev_document_factory_get_document (const char *uri, GError **error) { @@ -333,190 +211,181 @@ ev_document_factory_get_document (const char *uri, GError **error) int result; EvCompressionType compression; gchar *uri_unc = NULL; + GError *err = NULL; + + g_return_val_if_fail (uri != NULL, NULL); - document = get_document_from_uri (uri, FALSE, &compression, error); - if (*error == NULL) { - uri_unc = ev_file_uncompress (uri, compression, error); + document = get_document_from_uri (uri, TRUE, &compression, &err); + g_assert (document != NULL || err != NULL); + + if (document != NULL) { + uri_unc = ev_file_uncompress (uri, compression, &err); if (uri_unc) { g_object_set_data_full (G_OBJECT (document), "uri-uncompressed", uri_unc, (GDestroyNotify) free_uncompressed_uri); - } - - if (*error != NULL) { + } else if (err != NULL) { /* Error uncompressing file */ - if (document) - g_object_unref (document); + g_object_unref (document); + g_propagate_error (error, err); return NULL; } - result = ev_document_load (document, uri_unc ? uri_unc : uri, error); + result = ev_document_load (document, uri_unc ? uri_unc : uri, &err); - if (result == FALSE || *error) { - if (*error && - (*error)->domain == EV_DOCUMENT_ERROR && - (*error)->code == EV_DOCUMENT_ERROR_ENCRYPTED) + if (result == FALSE || err) { + if (err && + g_error_matches (err, EV_DOCUMENT_ERROR, EV_DOCUMENT_ERROR_ENCRYPTED)) { + g_propagate_error (error, err); return document; + } + /* else fall through to slow mime code section below */ } else { return document; } + + g_object_unref (document); + document = NULL; } /* Try again with slow mime detection */ - if (document) - g_object_unref (document); - document = NULL; - - if (*error) - g_error_free (*error); - *error = NULL; - + g_clear_error (&err); uri_unc = NULL; - document = get_document_from_uri (uri, TRUE, &compression, error); - - if (*error != NULL) { + document = get_document_from_uri (uri, FALSE, &compression, &err); + if (document == NULL) { + g_assert (err != NULL); + g_propagate_error (error, err); return NULL; } - uri_unc = ev_file_uncompress (uri, compression, error); + uri_unc = ev_file_uncompress (uri, compression, &err); if (uri_unc) { g_object_set_data_full (G_OBJECT (document), "uri-uncompressed", uri_unc, (GDestroyNotify) free_uncompressed_uri); - } - - if (*error != NULL) { + } else if (err != NULL) { /* Error uncompressing file */ - if (document) - g_object_unref (document); + g_propagate_error (error, err); + + g_object_unref (document); return NULL; } - result = ev_document_load (document, uri_unc ? uri_unc : uri, error); - + result = ev_document_load (document, uri_unc ? uri_unc : uri, &err); if (result == FALSE) { - if (*error == NULL) { - g_set_error (error, - EV_DOCUMENT_ERROR, - 0, - _("Unknown MIME Type")); - } else if ((*error)->domain == EV_DOCUMENT_ERROR && - (*error)->code == EV_DOCUMENT_ERROR_ENCRYPTED) { + if (err == NULL) { + /* FIXME: this really should not happen; the backend should + * always return a meaningful error. + */ + g_set_error_literal (&err, + EV_DOCUMENT_ERROR, + EV_DOCUMENT_ERROR_INVALID, + _("Unknown MIME Type")); + } else if (g_error_matches (err, EV_DOCUMENT_ERROR, EV_DOCUMENT_ERROR_ENCRYPTED)) { + g_propagate_error (error, err); return document; } - if (document) - g_object_unref (document); + g_object_unref (document); document = NULL; + + g_propagate_error (error, err); } return document; } static void -file_filter_add_mime_list_and_free (GtkFileFilter *filter, GList *mime_types) +file_filter_add_mime_types (EvTypeInfo *info, GtkFileFilter *filter) { - GList *l; + const gchar *mime_type; + gint i = 0; - for (l = mime_types; l != NULL; l = l->next) { - gtk_file_filter_add_mime_type (filter, l->data); - } +#ifdef ENABLE_PIXBUF + if (g_ascii_strcasecmp (info->mime_types[0], "image/*") == 0) { + GList *pixbuf_types, *l; + + pixbuf_types = gdk_pixbuf_mime_type_list (); + for (l = pixbuf_types; l; l = g_list_next (l)) { + gchar **mime_types = (gchar **)l->data; + gint j = 0; + + while ((mime_type = mime_types[j++])) + gtk_file_filter_add_mime_type (filter, mime_type); + + g_strfreev (mime_types); + } + g_list_free (pixbuf_types); - g_list_foreach (mime_types, (GFunc)g_free, NULL); - g_list_free (mime_types); + return; + } +#endif /* ENABLE_PIXBUF */ + + while ((mime_type = info->mime_types[i++])) + gtk_file_filter_add_mime_type (filter, mime_type); } -void +/** + * ev_document_factory_add_filters: + * @chooser: a #GtkFileChooser + * @document: a #EvDocument, or %NULL + * + * Adds some file filters to @chooser. + + * Always add a "All documents" format. + * + * If @document is not %NULL, adds a #GtkFileFilter for @document's MIME type. + * + * If @document is %NULL, adds a #GtkFileFilter for each document type that evince + * can handle. + */ +void ev_document_factory_add_filters (GtkWidget *chooser, EvDocument *document) { - EvBackend backend = 0; - GList *mime_types; + GList *all_types; GtkFileFilter *filter; GtkFileFilter *default_filter; GtkFileFilter *document_filter; - if (document != NULL) { - backend = ev_document_factory_get_backend (document); - } + g_return_if_fail (GTK_IS_FILE_CHOOSER (chooser)); + g_return_if_fail (document == NULL || EV_IS_DOCUMENT (document)); + all_types = ev_backends_manager_get_all_types_info (); + default_filter = document_filter = filter = gtk_file_filter_new (); gtk_file_filter_set_name (filter, _("All Documents")); - mime_types = ev_document_factory_get_all_mime_types (); - file_filter_add_mime_list_and_free (filter, mime_types); + g_list_foreach (all_types, (GFunc)file_filter_add_mime_types, filter); gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); -#ifdef ENABLE_PS - if (document == NULL || backend == EV_BACKEND_PS) { - default_filter = filter = gtk_file_filter_new (); - gtk_file_filter_set_name (filter, _("PostScript Documents")); - mime_types = ev_document_factory_get_mime_types (EV_BACKEND_PS); - file_filter_add_mime_list_and_free (filter, mime_types); - gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); - } -#endif + if (document) { + EvTypeInfo *info; -#ifdef ENABLE_PDF - if (document == NULL || backend == EV_BACKEND_PDF) { + info = ev_backends_manager_get_document_type_info (document); default_filter = filter = gtk_file_filter_new (); - gtk_file_filter_set_name (filter, _("PDF Documents")); - mime_types = ev_document_factory_get_mime_types (EV_BACKEND_PDF); - file_filter_add_mime_list_and_free (filter, mime_types); + gtk_file_filter_set_name (filter, info->desc); + file_filter_add_mime_types (info, filter); + g_free (info); gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); - } -#endif - -#ifdef ENABLE_PIXBUF - if (document == NULL || backend == EV_BACKEND_PIXBUF) { - default_filter = filter = gtk_file_filter_new (); - gtk_file_filter_set_name (filter, _("Images")); - mime_types = ev_document_factory_get_mime_types (EV_BACKEND_PIXBUF); - file_filter_add_mime_list_and_free (filter, mime_types); - gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); - } -#endif + } else { + GList *l; -#ifdef ENABLE_DVI - if (document == NULL || backend == EV_BACKEND_DVI) { - default_filter = filter = gtk_file_filter_new (); - gtk_file_filter_set_name (filter, _("DVI Documents")); - mime_types = ev_document_factory_get_mime_types (EV_BACKEND_DVI); - file_filter_add_mime_list_and_free (filter, mime_types); - gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); - } -#endif + for (l = all_types; l; l = g_list_next (l)){ + EvTypeInfo *info; -#ifdef ENABLE_DJVU - if (document == NULL || backend == EV_BACKEND_DJVU) { - default_filter = filter = gtk_file_filter_new (); - gtk_file_filter_set_name (filter, _("Djvu Documents")); - mime_types = ev_document_factory_get_mime_types (EV_BACKEND_DJVU); - file_filter_add_mime_list_and_free (filter, mime_types); - gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); - } -#endif + info = (EvTypeInfo *)l->data; -#ifdef ENABLE_COMICS - if (document == NULL || backend == EV_BACKEND_COMICS) { - default_filter = filter = gtk_file_filter_new (); - gtk_file_filter_set_name (filter, _("Comic Books")); - mime_types = ev_document_factory_get_mime_types (EV_BACKEND_COMICS); - file_filter_add_mime_list_and_free (filter, mime_types); - gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); + default_filter = filter = gtk_file_filter_new (); + gtk_file_filter_set_name (filter, info->desc); + file_filter_add_mime_types (info, filter); + gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); + } } -#endif -#ifdef ENABLE_IMPRESS - if (document == NULL || backend == EV_BACKEND_IMPRESS) { - default_filter = filter = gtk_file_filter_new (); - gtk_file_filter_set_name (filter, _("Impress Slides")); - mime_types = ev_document_factory_get_mime_types (EV_BACKEND_IMPRESS); - file_filter_add_mime_list_and_free (filter, mime_types); - gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); - } -#endif + g_list_foreach (all_types, (GFunc)g_free, NULL); + g_list_free (all_types); filter = gtk_file_filter_new (); gtk_file_filter_set_name (filter, _("All Files"));