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/* Cydia - iPhone UIKit Front-End for Debian APT
* Copyright (C) 2008-2012 Jay Freeman (saurik)
*/
/* GNU General Public License, Version 3 {{{ */
/*
* Cydia 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.
*
* Cydia 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 Cydia. If not, see <http://www.gnu.org/licenses/>.
**/
/* }}} */
#ifndef Cydia_PerlCompatibleRegEx_HPP
#define Cydia_PerlCompatibleRegEx_HPP
#include <pcre.h>
#include "CyteKit/UCPlatform.h"
#include "CyteKit/stringWithUTF8Bytes.h"
class Pcre {
private:
pcre *code_;
pcre_extra *study_;
int capture_;
int *matches_;
const char *data_;
public:
Pcre() :
code_(NULL),
study_(NULL),
data_(NULL)
{
}
Pcre(const char *regex, NSString *data = nil) :
code_(NULL),
study_(NULL),
data_(NULL)
{
this->operator =(regex);
if (data != nil)
this->operator ()(data);
}
void operator =(const char *regex) {
_assert(code_ == NULL);
const char *error;
int offset;
code_ = pcre_compile(regex, 0, &error, &offset, NULL);
if (code_ == NULL) {
fprintf(stderr, "%d:%s\n", offset, error);
_assert(false);
}
pcre_fullinfo(code_, study_, PCRE_INFO_CAPTURECOUNT, &capture_);
_assert(capture_ >= 0);
matches_ = new int[(capture_ + 1) * 3];
}
~Pcre() {
pcre_free(code_);
delete matches_;
}
NSString *operator [](size_t match) const {
return [NSString stringWithUTF8Bytes:(data_ + matches_[match * 2]) length:(matches_[match * 2 + 1] - matches_[match * 2])];
}
_finline bool operator ()(NSString *data) {
// XXX: length is for characters, not for bytes
return operator ()([data UTF8String], [data length]);
}
_finline bool operator ()(const char *data) {
return operator ()(data, strlen(data));
}
bool operator ()(const char *data, size_t size) {
if (pcre_exec(code_, study_, data, size, 0, 0, matches_, (capture_ + 1) * 3) >= 0) {
data_ = data;
return true;
} else {
data_ = NULL;
return false;
}
}
operator bool() const {
return data_ != NULL;
}
NSString *operator ->*(NSString *format) const {
id values[capture_];
for (int i(0); i != capture_; ++i)
values[i] = this->operator [](i + 1);
return [[[NSString alloc] initWithFormat:format arguments:reinterpret_cast<va_list>(values)] autorelease];
}
};
#endif//Cydia_PerlCompatibleRegEx_HPP
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