[evolution/wip/webkit-composer: 250/372] Makes links checking UTF-8 aware.

[Tomas Popela <tpopela src gnome org>]

commit d3e3b9be5e7756292d6e7c3429342e8c0a271824
Author: Tomas Popela <tpopela redhat com>
Date:   Wed Apr 17 14:43:00 2013 +0200

    Makes links checking UTF-8 aware.

 e-util/e-editor-widget.c |   25 ++++++++++++++++++-------
 1 files changed, 18 insertions(+), 7 deletions(-)
---
diff --git a/e-util/e-editor-widget.c b/e-util/e-editor-widget.c
index a516d67..2154874 100644
--- a/e-util/e-editor-widget.c
+++ b/e-util/e-editor-widget.c
@@ -310,7 +310,7 @@ editor_widget_check_magic_links (EEditorWidget *widget,
        gchar **urls;
        GRegex *regex = NULL;
        GMatchInfo *match_info;
-       gint start_pos_url, end_pos_url, end_input;
+       gint start_pos_url, end_pos_url;
        WebKitDOMNode *node;
 
        const gchar *url_pattern = "((([A-Za-z]{3,9}:(?:\\/\\/)?)(?:[\\-;:&=\\+\\$,\\w]+@)?"
@@ -324,11 +324,9 @@ editor_widget_check_magic_links (EEditorWidget *widget,
                return;
 
        node_text = webkit_dom_text_get_whole_text (WEBKIT_DOM_TEXT (node));
-       if (!node_text)
+       if (!node_text || !g_utf8_validate (node_text, -1, NULL))
                return;
 
-       end_input = webkit_dom_range_get_end_offset (range, NULL) - 1;
-
        regex = g_regex_new (url_pattern, 0, 0, NULL);
 
        if (!regex) {
@@ -341,13 +339,24 @@ editor_widget_check_magic_links (EEditorWidget *widget,
 
        if (urls) {
                gchar *html, *url, *final_url;
+               gchar *url_start_raw, *url_end_raw;
+               glong url_start, url_end;
                WebKitDOMDocument *document;
                WebKitDOMDOMWindow *window;
                WebKitDOMDOMSelection *selection;
 
                g_match_info_fetch_pos (match_info, 0, &start_pos_url, &end_pos_url);
 
-               url = g_strndup (urls[0], end_input - start_pos_url);
+               /* Get start and end position of url in node's text because positions
+                * that we get from g_match_info_fetch_pos are not UTF-8 aware */
+               url_start_raw = g_strndup(node_text, start_pos_url);
+               url_start = g_utf8_strlen (url_start_raw, -1);
+
+               url_end_raw = g_strndup(node_text, end_pos_url);
+               url_end = g_utf8_strlen (url_end_raw, -1);
+
+               /* Remove space on end */
+               url = g_utf8_substring (urls[0], 0, g_utf8_strlen (urls[0], -1) - 1);
 
                /* Select the link and put it inside <A> */
                document = webkit_web_view_get_dom_document (WEBKIT_WEB_VIEW (widget));
@@ -356,8 +365,8 @@ editor_widget_check_magic_links (EEditorWidget *widget,
 
                webkit_dom_dom_selection_set_base_and_extent (
                        selection, webkit_dom_range_get_end_container (range, NULL),
-                       end_input, webkit_dom_range_get_end_container (range, NULL),
-                       start_pos_url, NULL);
+                       url_end - 1, webkit_dom_range_get_end_container (range, NULL),
+                       url_start, NULL);
 
                if (g_str_has_prefix (url, "www"))
                        final_url = g_strconcat ("http://";, url, NULL);
@@ -370,6 +379,8 @@ editor_widget_check_magic_links (EEditorWidget *widget,
 
                webkit_dom_dom_selection_modify (selection, "move", "right", "character");
 
+               g_free (url_start_raw);
+               g_free (url_end_raw);
                g_free (html);
                g_free (url);
                g_free (final_url);