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/* Cydia - iPhone UIKit Front-End for Debian APT
* Copyright (C) 2008-2012 Jay Freeman (saurik)
*/
/* Modified BSD License {{{ */
/*
* Redistribution and use in source and binary
* forms, with or without modification, are permitted
* provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the
* above copyright notice, this list of conditions
* and the following disclaimer.
* 2. Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions
* and the following disclaimer in the documentation
* and/or other materials provided with the
* distribution.
* 3. The name of the author may not be used to endorse
* or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* }}} */
#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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