static bool g_utf8_validate(const char * str, int max_len, const char ** end)
{
const char * p;
if(max_len < 0)
p = fast_validate(str);
else
p = fast_validate_len(str, max_len);
if(end)
*end = p;
if((max_len >= 0 && p != str + max_len) || (max_len < 0 && *p != '\0'))
return false;
else
return true;
}
/**
* g_utf8_validate:
* @str: a pointer to character data
* @max_len: max bytes to validate, or -1 to go until NUL
* @end: return location for end of valid data
*
* Validates UTF-8 encoded text. @str is the text to validate;
* if @str is nul-terminated, then @max_len can be -1, otherwise
* @max_len should be the number of bytes to validate.
* If @end is non-%NULL, then the end of the valid range
* will be stored there (i.e. the start of the first invalid
* character if some bytes were invalid, or the end of the text
* being validated otherwise).
*
* Note that g_utf8_validate() returns %FALSE if @max_len is
* positive and NUL is met before @max_len bytes have been read.
*
* Returns %TRUE if all of @str was valid. Many GLib and GTK+
* routines <emphasis>require</emphasis> valid UTF-8 as input;
* so data read from a file or the network should be checked
* with g_utf8_validate() before doing anything else with it.
*
* Return value: %TRUE if the text was valid UTF-8
**/
gboolean
g_utf8_validate (const char *str,
gssize max_len,
const gchar **end)
{
const gchar *p;
if (max_len < 0)
p = fast_validate (str);
else
p = fast_validate_len (str, max_len);
if (end)
*end = p;
if ((max_len >= 0 && p != str + max_len) ||
(max_len < 0 && *p != '\0'))
return FALSE;
else
return TRUE;
}