godot/drivers/nrex/regex.cpp
2016-01-01 11:50:53 -02:00

117 lines
2.5 KiB
C++

/*************************************************/
/* regex.cpp */
/*************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/*************************************************/
/* Source code within this file is: */
/* (c) 2007-2016 Juan Linietsky, Ariel Manzur */
/* All Rights Reserved. */
/*************************************************/
#include "regex.h"
#include "nrex.hpp"
#include "core/os/memory.h"
void RegEx::_bind_methods() {
ObjectTypeDB::bind_method(_MD("compile","pattern", "capture"),&RegEx::compile, DEFVAL(9));
ObjectTypeDB::bind_method(_MD("find","text","start","end"),&RegEx::find, DEFVAL(0), DEFVAL(-1));
ObjectTypeDB::bind_method(_MD("clear"),&RegEx::clear);
ObjectTypeDB::bind_method(_MD("is_valid"),&RegEx::is_valid);
ObjectTypeDB::bind_method(_MD("get_capture_count"),&RegEx::get_capture_count);
ObjectTypeDB::bind_method(_MD("get_capture","capture"),&RegEx::get_capture);
ObjectTypeDB::bind_method(_MD("get_captures"),&RegEx::_bind_get_captures);
};
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;
};
void RegEx::clear() {
text.clear();
captures.clear();
exp.reset();
};
bool RegEx::is_valid() const {
return exp.valid();
};
int RegEx::get_capture_count() const {
ERR_FAIL_COND_V( !exp.valid(), 0 );
return exp.capture_size();
}
String RegEx::get_capture(int capture) const {
ERR_FAIL_COND_V( get_capture_count() <= capture, String() );
return text.substr(captures[capture].start, captures[capture].length);
}
Error RegEx::compile(const String& p_pattern, int capture) {
clear();
exp.compile(p_pattern.c_str(), capture);
ERR_FAIL_COND_V( !exp.valid(), FAILED );
captures.resize(exp.capture_size());
return OK;
};
int RegEx::find(const String& p_text, int p_start, int p_end) const {
ERR_FAIL_COND_V( !exp.valid(), -1 );
ERR_FAIL_COND_V( p_text.length() < p_start, -1 );
ERR_FAIL_COND_V( p_text.length() < p_end, -1 );
bool res = exp.match(p_text.c_str(), &captures[0], p_start, p_end);
if (res) {
text = p_text;
return captures[0].start;
}
text.clear();
return -1;
};
RegEx::RegEx(const String& p_pattern) {
compile(p_pattern);
};
RegEx::RegEx() {
};
RegEx::~RegEx() {
clear();
};