Searching single pages in epub

..and other fixing other bugs that were present once the webview was added, like the escape key command etc. Will look to refactor the thumbnails into ev-web-view.c.

In the next commit I'll extend this search over the entire document.Also will incorporate document index(table of contents).

2 files changed, 86 insertions, 53 deletions

diff --git a/backend/epub/epub-document.c b/backend/epub/epub-document.c
index a107b710..56d7e67d 100644
--- a/backend/epub/epub-document.c
+++ b/backend/epub/epub-document.c
@@ -20,10 +20,11 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
-#include "ev-file-helpers.h"
 #include "epub-document.h"
+#include "ev-file-helpers.h"
 #include "unzip.h"
 #include "ev-document-thumbnails.h"
+#include "ev-document-find.h"
 #include "ev-document-misc.h"
 #include <libxml/parser.h>
 #include <libxml/xmlmemory.h>
@@ -40,6 +41,11 @@
 #endif
 
 #include <gtk/gtk.h>
+#include <stdio.h>
+
+/*For strcasestr()*/
+
+#include <string.h>
 
 typedef enum _xmlParseReturnType 
 {
@@ -76,11 +82,14 @@ struct _EpubDocument
 };
 
 static void       epub_document_document_thumbnails_iface_init (EvDocumentThumbnailsInterface *iface);
+static void       epub_document_find_iface_init                (EvDocumentFindInterface       *iface); 
 
 EV_BACKEND_REGISTER_WITH_CODE (EpubDocument, epub_document,
 	{
 		EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
 						epub_document_document_thumbnails_iface_init);
+		 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
+								 epub_document_find_iface_init);
 	} );
 
 static void
@@ -112,6 +121,50 @@ epub_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
 	return thumbnailpix;
 }
 
+static gboolean
+epub_document_check_hits(EvDocumentFind *document_find,
+                         EvPage         *page,
+                         const gchar    *text,
+                         gboolean        case_sensitive)
+{
+	gchar *filepath = g_filename_from_uri((gchar*)page->backend_page,NULL,NULL);
+	FILE *fp = fopen(filepath,"r");
+	GString *buffer; 
+	gchar *found ;
+	
+	while (!feof(fp)) {
+		gchar c;
+		gint pos=0;
+		buffer = g_string_sized_new (1024);
+		
+		while ((c = fgetc(fp)) != '\n' && !feof(fp)) {
+			g_string_insert_c(buffer,pos++,c);
+		}
+
+		g_string_insert_c(buffer,pos,'\0');
+		
+		if (case_sensitive) {
+			if ((found = strstr(buffer->str,text)) != NULL) {
+				g_string_free(buffer,TRUE);
+				fclose(fp);
+				return TRUE;
+			}
+		}
+		else {
+			
+			if ( (found = strcasestr(buffer->str,text)) != NULL) {
+				g_string_free(buffer,TRUE);
+				fclose(fp);
+				return TRUE;
+			}
+		}
+		g_string_free(buffer,TRUE);
+	}
+	
+	fclose(fp);
+	return FALSE;
+}
+
 static void
 epub_document_document_thumbnails_iface_init (EvDocumentThumbnailsInterface *iface)
 {
@@ -119,6 +172,12 @@ epub_document_document_thumbnails_iface_init (EvDocumentThumbnailsInterface *ifa
 	iface->get_dimensions = epub_document_thumbnails_get_dimensions;
 }
 
+static void
+epub_document_find_iface_init (EvDocumentFindInterface *iface) 
+{
+	iface->check_for_hits = epub_document_check_hits;
+}
+
 static gboolean
 epub_document_save (EvDocument *document,
                     const char *uri,
@@ -139,53 +198,7 @@ epub_document_get_n_pages (EvDocument *document)
             
 	return g_list_length(epub_document->contentList);
 }
-#if !GTK_CHECK_VERSION(3, 0, 0)
-#else /* The webkit2 code for GTK3 */
-
-static void 
-snapshot_chain_cb(WebKitWebView *web_view,
-				  GAsyncResult* res,
-				  cairo_surface_t **surface)
-{
-	GError * err = NULL ;
-	*surface = webkit_web_view_get_snapshot_finish(WEBKIT_WEB_VIEW(web_view),res,&err);
-	if ( err ) {
-		surface = NULL ;	
-	}
-}
-
-static void 
-webkit_render_cb(WebKitWebView *webview,
-			     WebKitLoadEvent load_status,
-		         cairo_surface_t **surface)
-{
-	if ( load_status != WEBKIT_LOAD_FINISHED )
-		return ;
-
-	webkit_web_view_get_snapshot(webview,
-								 WEBKIT_SNAPSHOT_REGION_FULL_DOCUMENT,
-								 WEBKIT_SNAPSHOT_OPTIONS_INCLUDE_SELECTION_HIGHLIGHTING,
-								 NULL,
-								 (GAsyncReadyCallback)snapshot_chain_cb,
-								 surface);
-}
-
-{
-	GtkWidget *offscreen_window = gtk_offscreen_window_new ();
-	gtk_window_set_default_size(GTK_WINDOW(offscreen_window),800,600);
-	GtkWidget* scroll_view = gtk_scrolled_window_new (NULL,NULL);
-	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW(scroll_view),GTK_POLICY_AUTOMATIC,GTK_POLICY_AUTOMATIC);
-	GtkWidget* web_view = webkit_web_view_new ();
-	
-	gtk_container_add(GTK_CONTAINER(offscreen_window),scroll_view);
-	gtk_container_add(GTK_CONTAINER(scroll_view),web_view);
-	
-	gtk_widget_show_all(offscreen_window);
-	g_signal_connect(web_view,"load-changed",G_CALLBACK(webkit_render_cb),surface);
-	return web_view ;
-}
 
-#endif
 /**
  * epub_remove_temporary_dir : Removes a directory recursively. 
  * This function is same as comics_remove_temporary_dir
@@ -431,8 +444,10 @@ static gboolean
 check_mime_type(const gchar* uri,GError** error)
 {
     GError * err = NULL ;
-    gchar* mimeFromFile = ev_file_get_mime_type(uri,FALSE,&err);
+    const gchar* mimeFromFile = ev_file_get_mime_type(uri,FALSE,&err);
     
+    gchar* mimetypes[] = {"application/epub+zip","application/x-booki+zip"};
+    int typecount = 2;
     if ( !mimeFromFile )
     {
         if (err)    {
@@ -446,12 +461,16 @@ check_mime_type(const gchar* uri,GError** error)
         }
         return FALSE;
     }
-    else if ( g_strcmp0(mimeFromFile, "application/epub+zip") == 0  )
-    {
-        return TRUE ;
-    }
     else
     {
+        int i=0;
+        for (i=0; i < typecount ;i++) {
+           if ( g_strcmp0(mimeFromFile, mimetypes[i]) == 0  ) {
+                return TRUE;
+           }
+        }
+
+        /*We didn't find a match*/
         g_set_error_literal (error,
                      EV_DOCUMENT_ERROR,
                      EV_DOCUMENT_ERROR_INVALID,
@@ -882,6 +901,18 @@ epub_document_init (EpubDocument *epub_document)
 	epub_document->documentdir = NULL;
 }
 
+typedef struct _linknode {
+    guint page;
+    gchar *linktext;
+}linknode;
+
+static void
+setup_document_index(EpubDocument *epub_document,const gchar* contentUri) 
+{
+    linknode *index;
+
+}
+
 static gboolean
 epub_document_load (EvDocument* document,
                     const char* uri,
@@ -906,6 +937,7 @@ epub_document_load (EvDocument* document,
 		g_propagate_error( error,err );
 		return FALSE;
 	}
+
 	/*FIXME : can this be different, ever?*/
 	containerpath = g_string_new(epub_document->tmp_archive_dir);
 	g_string_append_printf(containerpath,"/META-INF/container.xml");
@@ -952,7 +984,7 @@ epub_document_finalize (GObject *object)
 	}
 	
 	if ( epub_document->contentList ) {
-               g_list_free_full(epub_document->contentList,(GDestroyNotify)free_tree_nodes);
+            g_list_free_full(epub_document->contentList,(GDestroyNotify)free_tree_nodes);
 			epub_document->contentList = NULL;
 	}
 	if ( epub_document->tmp_archive_dir) {
diff --git a/backend/epub/epub-document.h b/backend/epub/epub-document.h
index c9fd760d..b1120ec7 100644
--- a/backend/epub/epub-document.h
+++ b/backend/epub/epub-document.h
@@ -1,6 +1,7 @@
 #ifndef __EPUB_DOCUMENT_H__
 #define __EPUB_DOCUMENT_H__
 
+#define _GNU_SOURCE
 #include "ev-document.h"
 
 G_BEGIN_DECLS