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#pragma once
#include <sys/types.h>
#include <util/system/defaults.h>
#include <util/generic/string.h>
#include <util/generic/yexception.h>
#include <contrib/libs/pcre/pcre.h>
#include <contrib/libs/pcre/pcreposix.h>
//THIS CODE LOOKS LIKE A TRASH, BUT WORKS.
#define NMATCHES 100
#define REGEXP_GLOBAL 0x0080 // use this if you want to find all occurences
class TRegExBaseImpl;
class TRegExBase {
protected:
TSimpleIntrusivePtr<TRegExBaseImpl> Impl;
public:
TRegExBase(const char* regExpr = nullptr, int cflags = REG_EXTENDED);
TRegExBase(const TString& regExpr, int cflags = REG_EXTENDED);
virtual ~TRegExBase();
int Exec(const char* str, regmatch_t pmatch[], int eflags, int nmatches = NMATCHES) const;
void Compile(const TString& regExpr, int cflags = REG_EXTENDED);
bool IsCompiled() const;
int GetCompileOptions() const;
TString GetRegExpr() const;
};
class TRegExMatch: public TRegExBase {
public:
TRegExMatch(const char* regExpr = nullptr, int cflags = REG_NOSUB | REG_EXTENDED);
TRegExMatch(const TString& regExpr, int cflags = REG_NOSUB | REG_EXTENDED);
bool Match(const char* str) const;
};
struct TBackReferences {
int Beg;
int End;
int Refer;
};
class TRegExSubst: public TRegExBase {
private:
const char* Replacement;
regmatch_t PMatch[NMATCHES];
TBackReferences Brfs[NMATCHES];
int BrfsCount;
public:
TRegExSubst(const char* regExpr = nullptr, int cflags = REG_EXTENDED);
TString Replace(const char* str, int eflags = 0);
int ParseReplacement(const char* replacement);
};
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