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path: root/src/bookmarks/ephy-bookmarks-import.c
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Copyright © 2003, 2004 Marco Pesenti Gritti
 *  Copyright © 2003, 2004, 2005 Christian Persch
 *
 *  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "config.h"

#include <glib.h>
#include <gio/gio.h>
#include <libxml/HTMLtree.h>
#include <libxml/xmlreader.h>
#include <string.h>

#include <glib/gi18n.h>

#include "ephy-bookmarks-import.h"
#include "ephy-debug.h"
#include "ephy-prefs.h"
#include "ephy-settings.h"

/**
 * NSItemType: netscape bookmark item type
 */
typedef enum
{
    NS_SITE,
    NS_NOTES,
    NS_FOLDER,
    NS_FOLDER_END,
    NS_SEPARATOR,
    NS_UNKNOWN
} NSItemType;

static EphyNode *
bookmark_add (EphyBookmarks *bookmarks,
          const char *title,
          const char *address)
{
    if (!ephy_bookmarks_find_bookmark (bookmarks, address))
    {
        return ephy_bookmarks_add (bookmarks, title, address);
    }
    else
    {
        return NULL;
    }
}

gboolean
ephy_bookmarks_import (EphyBookmarks *bookmarks,
               const char *filename)
{
    const char *type;
    char *basename;
    gboolean success = FALSE;
    GFile *file;
    GFileInfo *file_info;

    if (g_settings_get_boolean (EPHY_SETTINGS_LOCKDOWN,
                    EPHY_PREFS_LOCKDOWN_BOOKMARK_EDITING))
        return FALSE;

    g_return_val_if_fail (filename != NULL, FALSE);
    
    file = g_file_new_for_path (filename);
    file_info = g_file_query_info (file,
                       G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
                       0, NULL, NULL);
    type = g_file_info_get_content_type (file_info);

    g_debug ("Importing bookmarks of type %s", type ? type : "(null)");

    if (type != NULL && (strcmp (type, "application/rdf+xml") == 0 ||
                 strcmp (type, "text/rdf") == 0))
    {
        success = ephy_bookmarks_import_rdf (bookmarks, filename);
    }
    else if ((type != NULL && strcmp (type, "application/x-xbel") == 0) ||
         strstr (filename, GALEON_BOOKMARKS_DIR) != NULL ||
         strstr (filename, KDE_BOOKMARKS_DIR) != NULL)
    {
        success = ephy_bookmarks_import_xbel (bookmarks, filename);
    }
    else if ((type != NULL && strcmp (type, "application/x-mozilla-bookmarks") == 0) ||
         (type != NULL && strcmp (type, "text/html") == 0) ||
             strstr (filename, MOZILLA_BOOKMARKS_DIR) != NULL ||
                 strstr (filename, FIREFOX_BOOKMARKS_DIR_0) != NULL ||
                 strstr (filename, FIREFOX_BOOKMARKS_DIR_1) != NULL ||
         strstr (filename, FIREFOX_BOOKMARKS_DIR_2) != NULL)
    {
        success = ephy_bookmarks_import_mozilla (bookmarks, filename);
    }
    else if (type == NULL)
    {
        basename = g_file_get_basename (file);

        if (g_str_has_suffix (basename, ".rdf"))
        {
            success = ephy_bookmarks_import_rdf (bookmarks, filename);
        }
        else if (g_str_has_suffix (basename, ".xbel"))
        {
            success = ephy_bookmarks_import_xbel (bookmarks, filename);
        }
        else if (g_str_has_suffix (basename, ".html"))
        {
            success = ephy_bookmarks_import_mozilla (bookmarks, filename);
        }
        else
        {
            /* else FIXME: put up some UI to warn user about unrecognised format? */
            g_warning ("Couldn't determine the type of the bookmarks file %s!\n", filename);
        }

        g_free (basename);
    }

    g_object_unref (file_info);
    g_object_unref (file);

    return success;
}

/* XBEL import */

typedef enum
{
    STATE_START,
    STATE_STOP,
    STATE_XBEL,
    STATE_FOLDER,
    STATE_BOOKMARK,
    STATE_TITLE,
    STATE_DESC,
    STATE_INFO,
    STATE_METADATA,
    STATE_SMARTURL
} EphyXBELImporterState;

static int
xbel_parse_bookmark (EphyBookmarks *eb, xmlTextReaderPtr reader, EphyNode **ret_node)
{
    EphyXBELImporterState state = STATE_BOOKMARK;
    EphyNode *node;
    xmlChar *title = NULL;
    xmlChar *address = NULL;
    int ret = 1;

    while (ret == 1)
    {
        const xmlChar *tag;
        xmlReaderTypes type;

        tag = xmlTextReaderConstName (reader);
        g_return_val_if_fail (tag != NULL, ret);

        type = xmlTextReaderNodeType (reader);

        if (xmlStrEqual (tag, (xmlChar *) "#text"))
        {
            if (state == STATE_TITLE && title == NULL)
            {
                title = xmlTextReaderValue (reader);
            }
            else if (state == STATE_SMARTURL)
            {
                xmlFree (address);
                address = xmlTextReaderValue (reader);
            }
            else
            {
                /* eat it */
            }
        }
        else if (xmlStrEqual (tag, (xmlChar *) "bookmark"))
        {
            if (type == XML_READER_TYPE_ELEMENT && state == STATE_BOOKMARK && address == NULL)
            {
                address = xmlTextReaderGetAttribute (reader, (xmlChar *) "href");
            }
            else if (type == XML_READER_TYPE_END_ELEMENT && state == STATE_BOOKMARK)
            {
                /* we're done */

                break;
            }
        }
        else if (xmlStrEqual (tag, (xmlChar *) "title"))
        {
            if (type == XML_READER_TYPE_ELEMENT && state == STATE_BOOKMARK && title == NULL)
            {
                state = STATE_TITLE;
            }
            else if (type == XML_READER_TYPE_END_ELEMENT && state == STATE_TITLE)
            {
                state = STATE_BOOKMARK;
            }
        }
        else if (xmlStrEqual (tag, (xmlChar *) "desc"))
        {
            if (type == XML_READER_TYPE_ELEMENT && state == STATE_BOOKMARK)
            {
                state = STATE_DESC;
            }
            else if (type == XML_READER_TYPE_END_ELEMENT && state == STATE_DESC)
            {
                state = STATE_BOOKMARK;
            }
        }
        else if (xmlStrEqual (tag, (xmlChar *) "info"))
        {
            if (type == XML_READER_TYPE_ELEMENT && state == STATE_BOOKMARK)
            {
                state = STATE_INFO;
            }
            else if (type == XML_READER_TYPE_END_ELEMENT && state == STATE_INFO)
            {
                state = STATE_BOOKMARK;
            }
        }
        else if (xmlStrEqual (tag, (xmlChar *) "metadata"))
        {
            if (type == XML_READER_TYPE_ELEMENT && state == STATE_INFO)
            {
                state = STATE_METADATA;
            }
            else if (type == XML_READER_TYPE_END_ELEMENT && state == STATE_METADATA)
            {
                state = STATE_INFO;
            }
        }
        else if (xmlStrEqual (tag, (xmlChar *) "smarturl"))
        {
            if (type == XML_READER_TYPE_ELEMENT && state == STATE_METADATA)
            {
                state = STATE_SMARTURL;
            }
            else if (type == XML_READER_TYPE_END_ELEMENT && state == STATE_SMARTURL)
            {
                state = STATE_METADATA;
            }
        }

        /* next one, please */
        ret = xmlTextReaderRead (reader);
    }

    if (address == NULL)
    {
        return ret;
    }

    if (title == NULL)
    {
        title = xmlStrdup ((xmlChar *) _("Untitled"));
    }

    node = bookmark_add (eb, (const char *) title, (const char *) address);
    if (node == NULL)
    {
        /* probably a duplicate */
        node = ephy_bookmarks_find_bookmark (eb, (const char *) address);
    }

    xmlFree (title);
    xmlFree (address);

    *ret_node = node;

    return ret;
}

static int
xbel_parse_folder (EphyBookmarks *eb, xmlTextReaderPtr reader, GList *folders)
{
    EphyXBELImporterState state = STATE_FOLDER;
    char *folder = NULL;
    int ret;

    ret = xmlTextReaderRead (reader);

    while (ret == 1)
    {
        const xmlChar *tag;
        xmlReaderTypes type;

        tag = xmlTextReaderConstName (reader);
        type = xmlTextReaderNodeType (reader);

        if (tag == NULL)
        {
            /* shouldn't happen but does anyway :) */
        }
        else if (xmlStrEqual (tag, (xmlChar *) "#text"))
        {
            if (state == STATE_TITLE && folder == NULL)
            {
                folder = (char *) xmlTextReaderValue (reader);
                
                folders = g_list_prepend (folders, folder);
            }
            else
            {
                /* eat it */
            }
        }
        else if (xmlStrEqual (tag, (xmlChar *) "bookmark") && type == 1 && state == STATE_FOLDER)
        {
            EphyNode *node = NULL, *keyword;
            GList *l;

            ret = xbel_parse_bookmark (eb, reader, &node);

            for (l = folders; l != NULL; l=l->next)
            {
                char *title;
                
                title = l->data ? (char *) l->data : "";
                
                keyword = ephy_bookmarks_find_keyword (eb, title, FALSE);
            
                if (keyword == NULL && title[0] != '\0')
                {
                    keyword = ephy_bookmarks_add_keyword (eb, title);
                }

                if (node != NULL && keyword != NULL)
                {
                    ephy_bookmarks_set_keyword (eb, keyword, node);
                }
            }

            if (ret != 1) break;
        }
        else if ((xmlStrEqual (tag, (xmlChar *) "folder"))
            && state == STATE_FOLDER)
        {
            if (type == XML_READER_TYPE_ELEMENT)
            {
                ret = xbel_parse_folder (eb, reader, folders);
                
                if (ret != 1) break;
            }
            else if (type == XML_READER_TYPE_END_ELEMENT)
            {
                /* we're done */

                break;
            }
        }
        else if (xmlStrEqual (tag, (xmlChar *) "title"))
        {
            if (type == XML_READER_TYPE_ELEMENT && state == STATE_FOLDER)
            {
                state = STATE_TITLE;
            }
            else if (type == XML_READER_TYPE_END_ELEMENT && state == STATE_TITLE)
            {
                state = STATE_FOLDER;
            }
        }
        else if (xmlStrEqual (tag, (xmlChar *) "info"))
        {
            if (type == XML_READER_TYPE_ELEMENT && state == STATE_FOLDER)
            {
                state = STATE_INFO;
            }
            else if (type == XML_READER_TYPE_END_ELEMENT && state == STATE_INFO)
            {
                state = STATE_FOLDER;
            }
        }
        else if (xmlStrEqual (tag, (xmlChar *) "desc"))
        {
            if (type == XML_READER_TYPE_ELEMENT && state == STATE_FOLDER)
            {
                state = STATE_DESC;
            }
            else if (type == XML_READER_TYPE_END_ELEMENT && state == STATE_DESC)
            {
                state = STATE_FOLDER;
            }
        }
        else
        {
            /* eat it */
        }

        /* next one, please */
        ret = xmlTextReaderRead (reader);
    }
    
    if (folder)
    {
        folders = g_list_remove (folders, folder);
        g_free (folder);
    }

    return ret;
}

static int
xbel_parse_xbel (EphyBookmarks *eb, xmlTextReaderPtr reader)
{
    EphyXBELImporterState state = STATE_XBEL;
    int ret;

    ret = xmlTextReaderRead (reader);

    while (ret == 1 && state != STATE_STOP)
    {
        const xmlChar *tag;
        xmlReaderTypes type;

        tag = xmlTextReaderConstName (reader);
        type = xmlTextReaderNodeType (reader);

        if (tag == NULL)
        {
            /* shouldn't happen but does anyway :( */
        }
        else if (xmlStrEqual (tag, (xmlChar *) "bookmark") && type == XML_READER_TYPE_ELEMENT
             && state == STATE_XBEL)
        {
            EphyNode *node = NULL;

            /* this will eat the </bookmark> too */
            ret = xbel_parse_bookmark (eb, reader, &node);

            if (ret != 1) break;
        }
        else if (xmlStrEqual (tag, (xmlChar *) "folder") && type == XML_READER_TYPE_ELEMENT
             && state == STATE_XBEL)
        {
            /* this will eat the </folder> too */
            ret = xbel_parse_folder (eb, reader, NULL);

            if (ret != 1) break;
        }
        else if ((xmlStrEqual (tag, (xmlChar *) "xbel")) && type == XML_READER_TYPE_ELEMENT
             && state == STATE_START)
        {
            state = STATE_XBEL;
        }
        else if ((xmlStrEqual (tag, (xmlChar *) "xbel")) && type == XML_READER_TYPE_END_ELEMENT
             && state == STATE_XBEL)
        {
            state = STATE_STOP;
        }
        else if (xmlStrEqual (tag, (xmlChar *) "title"))
        {
            if (type == XML_READER_TYPE_ELEMENT && state == STATE_XBEL)
            {
                state = STATE_TITLE;
            }
            else if (type == XML_READER_TYPE_END_ELEMENT && state == STATE_TITLE)
            {
                state = STATE_XBEL;
            }
        }
        else if (xmlStrEqual (tag, (xmlChar *) "info"))
        {
            if (type == XML_READER_TYPE_ELEMENT && state == STATE_XBEL)
            {
                state = STATE_INFO;
            }
            else if (type == XML_READER_TYPE_END_ELEMENT && state == STATE_INFO)
            {
                state = STATE_XBEL;
            }
        }
        else if (xmlStrEqual (tag, (xmlChar *) "desc"))
        {
            if (type == XML_READER_TYPE_ELEMENT && state == STATE_XBEL)
            {
                state = STATE_DESC;
            }
            else if (type == XML_READER_TYPE_END_ELEMENT && state == STATE_DESC)
            {
                state = STATE_XBEL;
            }
        }

        /* next one, please */
        ret = xmlTextReaderRead (reader);
    }

    return ret;
}

/* Mozilla/Netscape import */

static gchar *
gul_general_read_line_from_file (FILE *f)
{
    gchar *line = g_strdup ("");
    gchar *t;
    gchar *buf = g_new0 (gchar, 256);
    while ( ! ( strchr (buf, '\n') || feof (f) ) ) {
        if (fgets(buf, 256, f))
        {
            t = line;
            line = g_strconcat (line, buf, NULL);
            g_free (t);
        }
    }
    g_free (buf);
    return line;
}

/**
 * Parses a line of a mozilla/netscape bookmark file. File must be open.
 */
/* this has been tested fairly well */
static NSItemType
ns_get_bookmark_item (FILE *f, GString *name, GString *url)
{
    char *line = NULL;
    GRegex *regex;
    GMatchInfo *match_info;
    int ret = NS_UNKNOWN;
    char *match_url = NULL;
    char *match_name = NULL;

    line = gul_general_read_line_from_file (f);
    
    /*
     * Regex parsing of the html file:
     * 1. check if it's a bookmark, or a folder, or the end of a folder,
     * note that only ONE of this things is going to happen
     * 2. assign to the GStrings
     * 3. return the ret val to tell our caller what we found, by default 
     * we don't know (NS_UNKWOWN).
     */
    
    /* check if it's a bookmark */
    regex = g_regex_new
         ("<a href=\"(?P<url>[^\"]*).*?>\\s*(?P<name>.*?)\\s*</a>",
         G_REGEX_CASELESS, G_REGEX_MATCH_NOTEMPTY, NULL);
    g_regex_match (regex, line, 0, &match_info);
    
    if (g_match_info_matches (match_info))
    {
        match_url = g_match_info_fetch_named (match_info, "url");
        match_name = g_match_info_fetch_named (match_info, "name");
        ret = NS_SITE;
        goto end;
    }
    g_match_info_free (match_info);
    g_regex_unref (regex);
    
    /* check if it's a folder start */
    regex = g_regex_new ("<h3.*>(?P<name>\\w.*)</h3>", 
                G_REGEX_CASELESS, G_REGEX_MATCH_NOTEMPTY, NULL);

    g_regex_match (regex, line, 0, &match_info);
    if (g_match_info_matches (match_info))
    {
        match_name = g_match_info_fetch_named (match_info, "name");
        ret = NS_FOLDER;
        goto end;
    }
    g_match_info_free (match_info);
    g_regex_unref (regex);
    
    /* check if it's a folder end */
    regex = g_regex_new ("</dl>", 
                G_REGEX_CASELESS, G_REGEX_MATCH_NOTEMPTY, NULL);

    g_regex_match (regex, line, 0, &match_info);
    if (g_match_info_matches (match_info))
    {
        ret = NS_FOLDER_END;
        goto end;
    }
    
    /* now let's use the collected stuff */
    end:
        /* Due to the goto we'll always have an unfreed @match_info and 
         * @regex. Note that this two free/unrefs correspond to the last 
         * if() block too.
         */
        g_match_info_free (match_info);
        g_regex_unref (regex);

        if (match_name)
        {
            g_string_assign (name, match_name);
            g_free (match_name);
        }

        if (match_url)
        {
            g_string_assign (url, match_url);
            g_free (match_url);
        }

        g_free (line);
        return ret;
}

/*
 * This function replaces some weird elements
 * like &amp; &le;, etc..
 * More info : http://www.w3.org/TR/html4/charset.html#h-5.3.2
 * NOTE : We don't support &#D or &#xH.
 * Patch courtesy of Almer S. Tigelaar <almer1@dds.nl>
 *
 * NOTE: The returned string must be freed.
 */
static char *
ns_parse_bookmark_item (GString *string)
{
    char *iterator, *temp;
    int cnt = 0;
    GString *result = g_string_new (NULL);

    g_return_val_if_fail (string != NULL, NULL);
    g_return_val_if_fail (string->str != NULL, NULL);

    iterator = string->str;

    for (cnt = 0, iterator = string->str;
         cnt <= (int)(strlen (string->str));
         cnt++, iterator++) {
        if (*iterator == '&') {
            int jump = 0;
            int i;

            if (g_ascii_strncasecmp (iterator, "&amp;", 5) == 0)
            {
                g_string_append_c (result, '&');
                jump = 5;
            }
            else if (g_ascii_strncasecmp (iterator, "&lt;", 4) == 0)
            {
                g_string_append_c (result, '<');
                jump = 4;
            }
            else if (g_ascii_strncasecmp (iterator, "&gt;", 4) == 0)
            {
                g_string_append_c (result, '>');
                jump = 4;
            }
            else if (g_ascii_strncasecmp (iterator, "&quot;", 6) == 0)
            {
                g_string_append_c (result, '\"');
                jump = 6;
            }
            else
            {
                /* It must be some numeric thing now */

                iterator++;

                if (iterator && *iterator == '#') {
                    int val;
                    char *num, *tmp;

                    iterator++;

                    val = atoi (iterator);

                    tmp = g_strdup_printf ("%d", val);
                    jump = strlen (tmp);
                    g_free (tmp);

                    num = g_strdup_printf ("%c", (char) val);
                    g_string_append (result, num);
                    g_free (num);
                }
            }

            for (i = jump - 1; i > 0; i--)
            {
                iterator++;
                if (*iterator == '\0')
                    break;
            }
        }
        else
        {
            g_string_append_c (result, *iterator);
        }
    }
    temp = result->str;
    g_string_free (result, FALSE);
    return temp;
}

gboolean
ephy_bookmarks_import_mozilla (EphyBookmarks *bookmarks,
                   const char *filename)
{
    FILE *bf;  /* bookmark file */
    GString *name, *url;
    char *parsedname;
    GList *folders = NULL;

    if (g_settings_get_boolean (EPHY_SETTINGS_LOCKDOWN,
                    EPHY_PREFS_LOCKDOWN_BOOKMARK_EDITING))
        return FALSE;

    name = g_string_new (NULL);
    url = g_string_new (NULL);


    if (!(bf = fopen (filename, "r"))) {
        g_warning ("Failed to open file: %s\n", filename);
        return FALSE;
    }

    while (!feof (bf)) {
        EphyNode *node;
        NSItemType t;
        t = ns_get_bookmark_item (bf, name, url);
        switch (t)
        {
        case NS_FOLDER:
            folders = g_list_append (folders, ns_parse_bookmark_item (name));
            break;
        case NS_FOLDER_END:
            if (folders)
            {
                GList *last = g_list_last (folders);

                /* remove last entry */
                g_free (last->data);
                folders = g_list_delete_link (folders, last); 
            }
            break;
        case NS_SITE:
            parsedname = ns_parse_bookmark_item (name);

            node = bookmark_add (bookmarks, parsedname, url->str);

            if (node == NULL)
            {
                node = ephy_bookmarks_find_bookmark (bookmarks, url->str);
            }

            g_return_val_if_fail (node != NULL, FALSE);

            if (folders != NULL)
            {
                EphyNode *keyword;
                GList *l;

                for (l = folders; l != NULL; l = l->next)
                {
                    keyword = ephy_bookmarks_find_keyword (bookmarks, l->data, FALSE);
                    if (keyword == NULL)
                    {
                        keyword = ephy_bookmarks_add_keyword (bookmarks, l->data);
                    }

                    ephy_bookmarks_set_keyword (bookmarks, keyword, node);
                }
            }

            g_free (parsedname);

            break;
        default:
            break;
        }
    }
    fclose (bf);
    g_string_free (name, TRUE);
    g_string_free (url, TRUE);

    return TRUE;
}

gboolean
ephy_bookmarks_import_xbel (EphyBookmarks *bookmarks,
                const char *filename)
{
    xmlTextReaderPtr reader;
    int ret;

    if (g_settings_get_boolean (EPHY_SETTINGS_LOCKDOWN,
                    EPHY_PREFS_LOCKDOWN_BOOKMARK_EDITING))
        return FALSE;

    if (g_file_test (filename, G_FILE_TEST_EXISTS) == FALSE)
    {
        return FALSE;
    }
    
    reader = xmlNewTextReaderFilename (filename);
    if (reader == NULL)
    {
        return FALSE;
    }

    ret = xbel_parse_xbel (bookmarks, reader);

    xmlFreeTextReader (reader);

    return ret >= 0 ? TRUE : FALSE;
}

static void
parse_rdf_lang_tag (xmlNode  *child,
            xmlChar **value,
            int      *best_match)
{
    const char * const *locales;
    char *this_language;
    xmlChar *lang;
    xmlChar *content;
    int i;

    if (*best_match == 0)
        /* there's no way we can do better */
        return;

    content = xmlNodeGetContent (child);
    if (!content)
        return;

    lang = xmlNodeGetLang (child);
    if (lang == NULL)
    {
        const char *translated;

        translated = _((char *) content);
        if ((char *) content != translated)
        {
            /* if we have a translation for the content of the
             * node, then we just use this */
            if (*value) xmlFree (*value);
            *value = (xmlChar *) g_strdup (translated);
            *best_match = 0;

            xmlFree (content);
            return;
        }

        this_language = "C";
    }
    else
        this_language = (char *) lang;

    locales = g_get_language_names ();

    for (i = 0; locales[i] && i < *best_match; i++) {
        if (!strcmp (locales[i], this_language)) {
            /* if we've already encountered a less accurate
             * translation, then free it */
            if (*value) xmlFree (*value);

            *value = content;
            *best_match = i;

            break;
        }
    }

    if (lang) xmlFree (lang);
    if (*value != content) xmlFree (content);
}

static void
parse_rdf_item (EphyBookmarks *bookmarks,
        xmlNodePtr node)
{
    xmlChar *title = NULL;
    int best_match_title = INT_MAX;
    xmlChar *link = NULL;
    int best_match_link = INT_MAX;
    /* we consider that it's better to use a non-localized smart link than
     * a localized link */
    gboolean use_smartlink = FALSE;
    xmlChar *subject = NULL;
    GList *subjects = NULL, *l = NULL;
    xmlNode *child;
    EphyNode *bmk = NULL;

    child = node->children;

    link = xmlGetProp (node, (xmlChar *) "about");

    while (child != NULL)
    {
        if (xmlStrEqual (child->name, (xmlChar *) "title"))
        {
            parse_rdf_lang_tag (child, &title, &best_match_title);
        }
        else if (xmlStrEqual (child->name, (xmlChar *) "link") &&
             !use_smartlink)
        {
            parse_rdf_lang_tag (child, &link, &best_match_link);
        }
        else if (child->ns &&
             xmlStrEqual (child->ns->prefix, (xmlChar *) "ephy") &&
             xmlStrEqual (child->name, (xmlChar *) "smartlink"))
        {
            if (!use_smartlink)
            {
                use_smartlink = TRUE;
                best_match_link = INT_MAX;
            }

            parse_rdf_lang_tag (child, &link, &best_match_link);
        }
        else if (child->ns &&
             xmlStrEqual (child->ns->prefix, (xmlChar *) "dc") &&
             xmlStrEqual (child->name, (xmlChar *) "subject"))
        {
            subject = xmlNodeGetContent (child);
            if (subject)
                subjects = g_list_prepend (subjects, subject);
        }

        child = child->next;
    }

    if (link)
        bmk = bookmark_add (bookmarks, (char *) title, (char *) link);

    if (bmk)
    {
        l = subjects;
    }

    for (; l != NULL; l = l->next)
    {
        char *topic_name = l->data;
        EphyNode *topic;

        topic = ephy_bookmarks_find_keyword (bookmarks, topic_name, FALSE);

        if (topic == NULL)
        {
            topic = ephy_bookmarks_add_keyword (bookmarks, topic_name);
        }

        if (topic != NULL)
        {
            ephy_bookmarks_set_keyword (bookmarks, topic, bmk);
        }
    }

    xmlFree (title);
    xmlFree (link);

    g_list_foreach (subjects, (GFunc)xmlFree, NULL);
    g_list_free (subjects);
}

gboolean
ephy_bookmarks_import_rdf (EphyBookmarks *bookmarks,
               const char *filename)
{
    xmlDocPtr doc;
    xmlNodePtr child;
    xmlNodePtr root;

    if (g_settings_get_boolean (EPHY_SETTINGS_LOCKDOWN,
                    EPHY_PREFS_LOCKDOWN_BOOKMARK_EDITING))

    if (g_file_test (filename, G_FILE_TEST_EXISTS) == FALSE)
        return FALSE;

    doc = xmlParseFile (filename);
    if (doc == NULL)
    {
        /* FIXME: maybe put up a warning dialogue here, because this
         * is a severe dataloss?
         */
        g_warning ("Failed to re-import the bookmarks. All bookmarks lost!\n");
        return FALSE;
    }

    root = xmlDocGetRootElement (doc);

    child = root->children;

    while (child != NULL)
    {
        if (xmlStrEqual (child->name, (xmlChar *) "item"))
        {
            parse_rdf_item (bookmarks, child);
        }

        child = child->next;
    }

    xmlFreeDoc (doc);

    return TRUE;
}