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/*
* Ubuntu One Nautilus plugin
*
* Authors: Alejandro J. Cura <alecu@canonical.com>
*
* Copyright 2010 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3, as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>.
*
*/
#include <string.h>
#include <glib.h>
static gint
compare_glongs (gconstpointer a,
gconstpointer b,
gpointer user_data)
{
return (glong) a - (glong) b;
}
static void
tree_of_arrays_insert (GTree *tree,
gpointer key,
gpointer value)
{
GPtrArray *array = g_tree_lookup (tree, key);
if (array == NULL) {
array = g_ptr_array_new ();
g_tree_insert (tree, key, array);
}
g_ptr_array_add (array, value);
}
static void
destroy_tree_array (gpointer data)
{
g_ptr_array_free (data, TRUE);
}
typedef struct {
GString *built_string;
gchar *source_string;
gchar *source_cursor;
} BuildResultsData;
static void
append_array_strings (gpointer data,
gpointer user_data)
{
g_string_append (user_data, data);
}
static gboolean
build_results (gpointer key,
gpointer value,
gpointer data)
{
BuildResultsData* results_data = data;
glong tag_start = (glong)key;
gchar *tag_start_ptr = g_utf8_offset_to_pointer (results_data->source_string,
tag_start);
glong len = tag_start_ptr - results_data->source_cursor;
gchar *escaped_str = g_markup_escape_text (results_data->source_cursor,
len);
g_string_append (results_data->built_string,
escaped_str);
g_free (escaped_str);
results_data->source_cursor += len;
g_ptr_array_foreach (value,
append_array_strings,
results_data->built_string);
return FALSE;
}
gchar *
highlight_result(gchar *needles, gchar *haystack)
{
gchar **split_needles;
GTree *result_parts;
gchar *folded_needles;
gchar *folded_haystack;
gchar **needle;
gchar *escaped_str;
BuildResultsData results_data;
folded_needles = g_utf8_casefold (needles, -1);
folded_haystack = g_utf8_casefold (haystack, -1);
results_data.built_string = g_string_new ("");
results_data.source_string = haystack;
results_data.source_cursor = haystack;
result_parts = g_tree_new_full (compare_glongs,
NULL,
NULL,
destroy_tree_array);
split_needles = g_strsplit (folded_needles, " ", 0);
needle = split_needles;
while (*needle != NULL) {
gchar *search_start;
gchar *start_ptr;
glong needle_len = g_utf8_strlen (*needle, -1);
if (needle_len < 1) {
needle++;
continue;
}
search_start = folded_haystack;
start_ptr = g_strstr_len (search_start, -1, *needle);
while (start_ptr != NULL) {
glong start = g_utf8_pointer_to_offset (folded_haystack,
start_ptr);
glong end = start + g_utf8_strlen (*needle, -1);
tree_of_arrays_insert (result_parts,
(gpointer) start,
"<b>");
tree_of_arrays_insert (result_parts,
(gpointer) end,
"</b>");
search_start = g_utf8_next_char (start_ptr);
start_ptr = g_strstr_len (search_start,
-1,
*needle);
}
needle++;
}
g_free (folded_needles);
g_free (folded_haystack);
g_tree_foreach (result_parts, build_results, &results_data);
escaped_str = g_markup_escape_text (results_data.source_cursor, -1);
g_string_append (results_data.built_string,
escaped_str);
g_free (escaped_str);
g_tree_destroy (result_parts);
g_strfreev (split_needles);
return g_string_free (results_data.built_string,
FALSE);
}
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