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/* Cydia - iPhone UIKit Front-End for Debian APT
* Copyright (C) 2008-2014 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_RegEx_HPP
#define Cydia_RegEx_HPP
#include <unicode/uregex.h>
#include "CyteKit/UCPlatform.h"
#include "CyteKit/stringWithUTF8Bytes.h"
#define _rgxcall(code, args...) ({ \
UErrorCode status(U_ZERO_ERROR); \
auto _value(code(args, &status)); \
if (U_FAILURE(status)) { \
fprintf(stderr, "%d:%s\n", error.offset, u_errorName(status)); \
_assert(false); \
} \
_value; })
#define _rgxcallv(code, args...) ({ \
UErrorCode status(U_ZERO_ERROR); \
code(args, &status); \
if (U_FAILURE(status)) { \
fprintf(stderr, "%d:%s\n", error.offset, u_errorName(status)); \
_assert(false); \
} \
})
class RegEx {
private:
URegularExpression *regex_;
int capture_;
size_t size_;
public:
RegEx() :
regex_(NULL),
size_(_not(size_t))
{
}
RegEx(const char *regex, NSString *data = nil) :
regex_(NULL),
size_(_not(size_t))
{
this->operator =(regex);
if (data != nil)
this->operator ()(data);
}
void operator =(const char *regex) {
_assert(regex_ == NULL);
UParseError error;
regex_ = _rgxcall(uregex_openC, regex, 0, &error);
capture_ = _rgxcall(uregex_groupCount, regex_);
}
~RegEx() {
uregex_close(regex_);
}
NSString *operator [](size_t match) const {
UParseError error;
size_t size(size_);
UChar data[size];
size = _rgxcall(uregex_group, regex_, match, data, size);
return [[[NSString alloc] initWithBytes:data length:(size * sizeof(UChar)) encoding:NSUTF16LittleEndianStringEncoding] autorelease];
}
_finline bool operator ()(NSString *string) {
return operator ()(reinterpret_cast<const uint16_t *>([string cStringUsingEncoding:NSUTF16LittleEndianStringEncoding]), [string length]);
}
_finline bool operator ()(const char *data) {
return operator ()([NSString stringWithUTF8String:data]);
}
bool operator ()(const UChar *data, size_t size) {
UParseError error;
_rgxcallv(uregex_setText, regex_, data, size);
if (_rgxcall(uregex_matches, regex_, -1)) {
size_ = size;
return true;
} else {
size_ = _not(size_t);
return false;
}
}
bool operator ()(const char *data, size_t size) {
return operator ()([[[NSString alloc] initWithBytes:data length:size encoding:NSUTF8StringEncoding] autorelease]);
}
operator bool() const {
return size_ != _not(size_t);
}
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_RegEx_HPP
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