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/* $Id$ */
/*
* Copyright (c) 1994-1996 Sam Leffler
* Copyright (c) 1994-1996 Silicon Graphics, Inc.
* HylaFAX is a trademark of Silicon Graphics
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that (i) the above copyright notices and this permission notice appear in
* all copies of the software and related documentation, and (ii) the names of
* Sam Leffler and Silicon Graphics may not be used in any advertising or
* publicity relating to the software without the specific, prior written
* permission of Sam Leffler and Silicon Graphics.
*
* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#ifndef _RE_
#define _RE_
#include <sys/types.h>
#include "regex.h"
#include "Str.h"
#include "Ptr.h"
/*
* Reference-counted regular expressions;
* for use with Ptrs, Arrays, and Dicts.
*/
class RE : public fxObj {
public:
RE(const char* pat, int length = 0 , int flags = REG_EXTENDED);
RE(const fxStr& pat, int flags = REG_EXTENDED);
RE(const RE& other, int flags = REG_EXTENDED);
~RE();
const char* pattern() const;
bool Find(const char* text, u_int length, u_int off = 0);
bool Find(const fxStr& s, u_int off = 0);
int StartOfMatch(u_int subexp = 0) const;
int EndOfMatch(u_int subexp = 0) const;
int getErrorCode() const;
void getError(fxStr&) const;
private:
int compResult; // regcomp result
int execResult; // last regexec result
fxStr _pattern; // original regex
regex_t c_pattern; // compiled regex
regmatch_t* matches; // subexpression matches
void init(int flags);
};
inline bool RE::Find(const fxStr& s, u_int off)
{ return Find(s, s.length(), off); }
inline const char* RE::pattern() const { return _pattern; }
inline int RE::getErrorCode() const { return execResult; }
/*
* This private REPtr definition is done to work
* around problems with certain C++ compilers not
* properly making the destructor method either inline
* or static. We also can save some space by eliminating
* some inline functions that compilers frequently can't
* handle in-line.
*/
class REPtr {
protected:
void destroy();
RE* p;
public:
REPtr() { p = 0; }
REPtr(RE *tp) { p = tp ? (tp->inc(),tp) : 0; }
REPtr(const REPtr& other)
{ p = other.p ? (other.p->inc(),other.p) : 0; }
~REPtr();
REPtr& operator=(const REPtr& other);
REPtr& operator=(RE* tp);
int compare(const REPtr *other) const
{ return int((char*) p - (char*) other->p); }
operator RE*() { return p; }
operator const RE*() const { return p; }
RE* operator ->() { return p; }
const RE* operator ->() const { return p; }
};
#endif /* _RE_ */
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