static ejsval
_ejs_RegExp_impl (ejsval env, ejsval _this, uint32_t argc, ejsval *args)
{
EJSRegExp *re;
if (EJSVAL_IS_UNDEFINED(_this)) {
// called as a function
_this = _ejs_object_new(_ejs_RegExp_prototype, &_ejs_RegExp_specops);
}
re = (EJSRegExp*)EJSVAL_TO_OBJECT(_this);
re->pattern = _ejs_undefined;
re->flags = _ejs_undefined;
if (argc > 0) re->pattern = args[0];
if (argc > 1) re->flags = args[1];
if (!EJSVAL_IS_STRING(re->pattern))
EJS_NOT_IMPLEMENTED();
EJSPrimString *flat_pattern = _ejs_string_flatten (re->pattern);
jschar* chars = flat_pattern->data.flat;
const unsigned char* pcre16_tables = pcre16_maketables();
const char *pcre_error;
int pcre_erroffset;
re->compiled_pattern = pcre16_compile(chars,
PCRE_UTF16 | PCRE_NO_UTF16_CHECK,
&pcre_error, &pcre_erroffset,
pcre16_tables);
_ejs_object_define_value_property (_this, _ejs_atom_source, re->pattern, EJS_PROP_NOT_ENUMERABLE | EJS_PROP_NOT_CONFIGURABLE | EJS_PROP_NOT_WRITABLE);
if (EJSVAL_IS_STRING(re->flags)) {
EJSPrimString *flat_flags = _ejs_string_flatten(re->flags);
chars = flat_flags->data.flat;
for (int i = 0; i < flat_flags->length; i ++) {
if (chars[i] == 'g' && !re->global) { re->global = EJS_TRUE; continue; }
else if (chars[i] == 'i' && !re->ignoreCase) { re->ignoreCase = EJS_TRUE; continue; }
else if (chars[i] == 'm' && !re->multiline) { re->multiline = EJS_TRUE; continue; }
else if (chars[i] == 'y' && !re->sticky) { re->sticky = EJS_TRUE; continue; }
else if (chars[i] == 'u' && !re->unicode) { re->unicode = EJS_TRUE; continue; }
_ejs_throw_nativeerror_utf8 (EJS_SYNTAX_ERROR, "Invalid flag supplied to RegExp constructor");
}
}
return _this;
}
// ECMA262: 15.10.6.3
static ejsval
_ejs_RegExp_prototype_test (ejsval env, ejsval _this, uint32_t argc, ejsval *args)
{
if (!EJSVAL_IS_REGEXP(_this))
EJS_NOT_IMPLEMENTED();
EJSRegExp* re = (EJSRegExp*)EJSVAL_TO_OBJECT(_this);
ejsval subject = _ejs_undefined;
if (argc > 0) subject = args[0];
pcre16_extra extra;
memset (&extra, 0, sizeof(extra));
EJSPrimString *flat_subject = _ejs_string_flatten (subject);
jschar* subject_chars = flat_subject->data.flat;
int ovec[3];
int rv = pcre16_exec((pcre16*)re->compiled_pattern, &extra,
subject_chars, flat_subject->length, 0,
PCRE_NO_UTF16_CHECK, ovec, 3);
return rv == PCRE_ERROR_NOMATCH ? _ejs_false : _ejs_true;
}
ejsval
_ejs_unhandledException(ejsval env, ejsval _this, uint32_t argc, ejsval* args)
{
ejsval exc = _ejs_undefined;
if (argc > 0)
exc = args[0];
printf ("unhandled exception: ");
if (EJSVAL_IS_UNDEFINED(exc)) {
EJS_NOT_IMPLEMENTED();
}
else {
ejsval str = ToString(exc);
printf ("%s\n", _ejs_string_to_utf8(_ejs_string_flatten(str)));
}
exit(-1);
return _ejs_undefined;
}
ejsval
_ejs_regexp_replace(ejsval str, ejsval search_re, ejsval replace)
{
EJSRegExp* re = (EJSRegExp*)EJSVAL_TO_OBJECT(search_re);
pcre16_extra extra;
memset (&extra, 0, sizeof(extra));
pcre16* code = (pcre16*)re->compiled_pattern;
int capture_count;
pcre16_fullinfo (code, NULL, PCRE_INFO_CAPTURECOUNT, &capture_count);
int ovec_count = 3 * (1 + capture_count);
int* ovec = malloc(sizeof(int) * ovec_count);
int cur_off = 0;
do {
EJSPrimString *flat_str = _ejs_string_flatten (str);
jschar *chars_str = flat_str->data.flat;
int rv = pcre16_exec(code, &extra,
chars_str, flat_str->length, cur_off,
PCRE_NO_UTF16_CHECK, ovec, ovec_count);
if (rv < 0)
break;
ejsval replaceval;
if (EJSVAL_IS_FUNCTION(replace)) {
ejsval substr_match = _ejs_string_new_substring (str, ovec[0], ovec[1] - ovec[0]);
ejsval capture = _ejs_string_new_substring (str, ovec[2], ovec[3] - ovec[2]);
_ejs_log ("substring match is %s\n", ucs2_to_utf8(_ejs_string_flatten(substr_match)->data.flat));
_ejs_log ("capture is %s\n", ucs2_to_utf8(_ejs_string_flatten(capture)->data.flat));
int argc = 3;
ejsval args[3];
args[0] = substr_match;
args[1] = capture;
args[2] = _ejs_undefined;
replaceval = ToString(_ejs_invoke_closure (replace, _ejs_undefined, argc, args));
}
else {
replaceval = ToString(replace);
}
if (ovec[0] == 0) {
// we matched from the beginning of the string, so nothing from there to prepend
str = _ejs_string_concat (replaceval, _ejs_string_new_substring (str, ovec[1], flat_str->length - ovec[1]));
}
else {
str = _ejs_string_concatv (_ejs_string_new_substring (str, 0, ovec[0]),
replaceval,
_ejs_string_new_substring (str, ovec[1], flat_str->length - ovec[1]),
_ejs_null);
}
cur_off = ovec[1];
// if the RegExp object was created without a 'g' flag, only replace the first match
if (!re->global)
break;
} while (EJS_TRUE);
free (ovec);
return str;
}
