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/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* Copyright © Red Hat Inc.
*
* This file is part of Epiphany.
*
* Epiphany 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 3 of the License, or
* (at your option) any later version.
*
* Epiphany 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 Epiphany. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "ephy-output-encoding.h"
#include <glib.h>
#if !GLIB_CHECK_VERSION(2, 68, 0)
static guint
g_string_replace (GString *string,
const gchar *find,
const gchar *replace,
guint limit)
{
gsize f_len, r_len, pos;
gchar *cur, *next;
guint n = 0;
g_return_val_if_fail (string != NULL, 0);
g_return_val_if_fail (find != NULL, 0);
g_return_val_if_fail (replace != NULL, 0);
f_len = strlen (find);
r_len = strlen (replace);
cur = string->str;
while ((next = strstr (cur, find)) != NULL)
{
pos = next - string->str;
g_string_erase (string, pos, f_len);
g_string_insert (string, pos, replace);
cur = string->str + pos + r_len;
n++;
/* Only match the empty string once at any given position, to
* avoid infinite loops */
if (f_len == 0)
{
if (cur[0] == '\0')
break;
else
cur++;
}
if (n == limit)
break;
}
return n;
}
#endif
char *
ephy_encode_for_html_entity (const char *input)
{
GString *str = g_string_new (input);
g_string_replace (str, "&", "&", 0);
g_string_replace (str, "<", "<", 0);
g_string_replace (str, ">", ">", 0);
g_string_replace (str, "\"", """, 0);
g_string_replace (str, "'", "'", 0);
g_string_replace (str, "/", "/", 0);
return g_string_free (str, FALSE);
}
static char *
encode_all_except_alnum (const char *input,
const char *format)
{
GString *str;
const char *c = input;
if (!g_utf8_validate (input, -1, NULL))
return g_strdup ("");
str = g_string_new (NULL);
do {
gunichar u = g_utf8_get_char (c);
if (g_unichar_isalnum (u))
g_string_append_unichar (str, u);
else
g_string_append_printf (str, format, u);
c = g_utf8_next_char (c);
} while (*c);
return g_string_free (str, FALSE);
}
char *
ephy_encode_for_html_attribute (const char *input)
{
return encode_all_except_alnum (input, "&#x%02x;");
}
char *
ephy_encode_for_javascript (const char *input)
{
return encode_all_except_alnum (input, "\\u%04u;");
}
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