add ability to search in web from search view

It use OpenSearch to define the search engines. https://bugzilla.gnome.org/show_bug.cgi?id=623708
2011-01-18 00:38:47 +03:00
parent 883f51be93
commit b0c6cf3fc5
12 changed files with 517 additions and 30 deletions
--- a/src/shell-global.c
+++ b/src/shell-global.c
@ -27,6 +27,9 @@
 #include <X11/extensions/Xfixes.h>
 #include <gjs/gjs-module.h>
 #include <canberra.h>
+#include <libxml/xmlmemory.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
 #ifdef HAVE_SYS_RESOURCE_H
 #include <sys/resource.h>
 #endif
@ -1070,6 +1073,136 @@ shell_global_breakpoint (ShellGlobal *global)
  G_BREAKPOINT ();
 }

+/**
+ * shell_global_parse_search_provider:
+ * @global: A #ShellGlobal
+ * @data: description of provider
+ * @name: (out): location to store a display name
+ * @url: (out): location to store template of url
+ * @langs: (out) (transfer full) (element-type utf8): list of supported languages
+ * @icon_data_uri: (out): location to store uri
+ * @error: location to store GError
+ *
+ * Returns: %TRUE on success
+ */
+gboolean
+shell_global_parse_search_provider (ShellGlobal   *global,
+                                    const char    *data,
+                                    char         **name,
+                                    char         **url,
+                                    GList        **langs,
+                                    char         **icon_data_uri,
+                                    GError       **error)
+{
+  xmlDocPtr doc = xmlParseMemory (data, strlen(data));
+  xmlNode *root;
+
+  *name = NULL;
+  *url = NULL;
+  *icon_data_uri = NULL;
+  *langs = NULL;
+
+  if (!doc)
+    {
+      g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Malformed xml");
+      return FALSE;
+    }
+
+  root = xmlDocGetRootElement (doc);
+  if (root && root->name && xmlStrcmp (root->name, (const xmlChar *)"OpenSearchDescription") == 0)
+    {
+      xmlNode *child;
+      for (child = root->children; child; child = child->next)
+        {
+            if (!child->name)
+              continue;
+            if (xmlStrcmp (child->name, (const xmlChar *)"Language") == 0)
+              {
+                xmlChar *val = xmlNodeListGetString(doc, child->xmlChildrenNode, 1);
+                if (!val)
+                  continue;
+                *langs = g_list_append (*langs, g_strdup ((char *)val));
+                xmlFree (val);
+              }
+            if (!*name && xmlStrcmp (child->name, (const xmlChar *)"ShortName") == 0)
+              {
+                xmlChar *val = xmlNodeListGetString(doc, child->xmlChildrenNode, 1);
+                *name = g_strdup ((char *)val);
+                xmlFree (val);
+              }
+            if (!*icon_data_uri && xmlStrcmp (child->name, (const xmlChar *)"Image") == 0)
+              {
+                xmlChar *val = xmlNodeListGetString(doc, child->xmlChildrenNode, 1);
+                if (val)
+                  *icon_data_uri = g_strdup ((char *)val);
+                xmlFree (val);
+              }
+            if (!*url && xmlStrcmp (child->name, (const xmlChar *)"Url") == 0)
+              {
+                xmlChar *template;
+                xmlChar *type;
+
+                type = xmlGetProp(child, (const xmlChar *)"type");
+                if (!type)
+                  continue;
+
+                if (xmlStrcmp (type, (const xmlChar *)"text/html") != 0)
+                  {
+                    xmlFree (type);
+                    continue;
+                  }
+                xmlFree (type);
+
+                template = xmlGetProp(child, (const xmlChar *)"template");
+                if (!template)
+                  continue;
+                *url = g_strdup ((char *)template);
+                xmlFree (template);
+              }
+        }
+    }
+  else
+    {
+      g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Invalid OpenSearch document");
+      xmlFreeDoc (doc);
+      return FALSE;
+    }
+  xmlFreeDoc (doc);
+  if (*icon_data_uri && *name && *url)
+    return TRUE;
+
+  if (*icon_data_uri)
+    g_free (*icon_data_uri);
+  else
+    g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
+                 "search provider doesn't have icon");
+
+  if (*name)
+    g_free (*name);
+  else if (error && !*error)
+    g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
+                 "search provider doesn't have ShortName");
+
+  if (*url)
+    g_free (*url);
+  else if (error && !*error)
+    g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
+                 "search provider doesn't have template for url");
+
+  if (*langs)
+    {
+      g_list_foreach (*langs, (GFunc)g_free, NULL);
+      g_list_free (*langs);
+    }
+
+  *url = NULL;
+  *name = NULL;
+  *icon_data_uri = NULL;
+  *langs = NULL;
+
+  return FALSE;
+}
+
 /**
 * shell_global_gc:
 * @global: A #ShellGlobal