/drivers/trex/regex.cpp
C++ | 163 lines | 102 code | 51 blank | 10 comment | 14 complexity | fb55d14494ada8007705d156b3ad8837 MD5 | raw file
- /*************************************************/
- /* regex.cpp */
- /*************************************************/
- /* This file is part of: */
- /* GODOT ENGINE */
- /*************************************************/
- /* Source code within this file is: */
- /* (c) 2007-2010 Juan Linietsky, Ariel Manzur */
- /* All Rights Reserved. */
- /*************************************************/
- #include "regex.h"
- extern "C" {
- #define _UNICODE
- #include "trex.h"
- };
- void RegEx::_bind_methods() {
- ObjectTypeDB::bind_method(_MD("compile","pattern"),&RegEx::compile);
- ObjectTypeDB::bind_method(_MD("find","text", "start","end"),&RegEx::_bind_find, DEFVAL(0), DEFVAL(-1));
- ObjectTypeDB::bind_method(_MD("get_captures"),&RegEx::_bind_get_captures);
- };
- Error RegEx::compile(const String& p_pattern) {
- clear();
- const TRexChar* error;
- exp = trex_compile(p_pattern.c_str(), &error);
- ERR_FAIL_COND_V(!exp, FAILED);
- return OK;
- };
- int RegEx::_bind_find(const String& p_text, int p_start, int p_end) const {
- int start, end;
- bool ret = find(p_text, start, end, NULL, p_start, p_end);
- return ret?start:-1;
- };
- bool RegEx::find(const String& p_text, int& p_rstart, int &p_rend, List<String>* p_captures, int p_start, int p_end) const {
- ERR_FAIL_COND_V( !exp, false );
- text=p_text;
- const CharType* str = p_text.c_str();
- const CharType* start = str + p_start;
- const CharType* end = str + (p_end == -1?p_text.size():p_end);
- const CharType* out_begin;
- const CharType* out_end;
- bool ret = trex_searchrange(exp, start, end, &out_begin, &out_end);
- if (ret) {
- p_rstart = out_begin - str;
- p_rend = out_end - str;
- if (p_captures) {
- int count = get_capture_count();
- for (int i=0; i<count; i++) {
- int start, len;
- get_capture_limits(i, start, len);
- p_captures->push_back(p_text.substr(start, len));
- };
- };
- } else {
- p_rstart = -1;
- };
- return ret;
- };
- bool RegEx::match(const String& p_text, List<String>* p_captures, int p_start, int p_end) const {
- ERR_FAIL_COND_V( !exp, false );
- int start, end;
- return find(p_text, start, end, p_captures, p_start, p_end);
- };
- int RegEx::get_capture_count() const {
- ERR_FAIL_COND_V( exp == NULL, -1 );
- return trex_getsubexpcount(exp);
- };
- Error RegEx::get_capture_limits(int p_capture, int& p_start, int& p_len) const {
- ERR_FAIL_COND_V( exp == NULL, ERR_UNCONFIGURED );
- TRexMatch match;
- TRexBool res = trex_getsubexp(exp, p_capture, &match);
- ERR_FAIL_COND_V( !res, FAILED );
- p_start = (int)(match.begin - text.c_str());
- p_len = match.len;
- return OK;
- };
- String RegEx::get_capture(int p_idx) const {
- ERR_FAIL_COND_V( exp == NULL, "" );
- int start, len;
- Error ret = get_capture_limits(p_idx, start, len);
- ERR_FAIL_COND_V(ret != OK, "");
- if (len == 0)
- return "";
- return text.substr(start, len);
- };
- StringArray RegEx::_bind_get_captures() const {
- StringArray ret;
- int count = get_capture_count();
- for (int i=0; i<count; i++) {
- String c = get_capture(i);
- ret.push_back(c);
- };
- return ret;
- };
- bool RegEx::is_valid() const {
- return exp != NULL;
- };
- void RegEx::clear() {
- if (exp) {
- trex_free(exp);
- exp = NULL;
- };
- };
- RegEx::RegEx(const String& p_pattern) {
- exp = NULL;
- compile(p_pattern);
- };
- RegEx::RegEx() {
- exp = NULL;
- };
- RegEx::~RegEx() {
- clear();
- };