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#pragma once
#include <contrib/libs/pcre/pcre.h>
#include <util/generic/ptr.h> // THolder
#include <util/system/types.h> // wchar16, wchar32
namespace NPcre {
template <class TCharType>
struct TPcreTraits;
template <>
struct TPcreTraits<char> {
using TCharType = char;
using TStringType = const char*;
using TCodeType = pcre;
using TExtraType = pcre_extra;
static constexpr TCodeType* (*Compile)(TStringType pattern, int options, int* errcodeptr, const char** errptr, int* erroffset, const unsigned char* tableptr) = pcre_compile2;
static constexpr TExtraType* (*Study)(const TCodeType* pattern, int options, const char** errptr) = pcre_study;
static constexpr int (*Exec)(const TCodeType* code, const TExtraType* extra, TStringType str, int length, int startoffset, int options, int* ovector, int ovecsize) = pcre_exec;
};
template <>
struct TPcreTraits<wchar16> {
using TCharType = wchar16;
using TStringType = PCRE_SPTR16;
using TCodeType = pcre16;
using TExtraType = pcre16_extra;
static constexpr TCodeType* (*Compile)(TStringType pattern, int options, int* errcodeptr, const char** errptr, int* erroffset, const unsigned char* tableptr) = pcre16_compile2;
static constexpr TExtraType* (*Study)(const TCodeType* pattern, int options, const char** errptr) = pcre16_study;
static constexpr int (*Exec)(const TCodeType* code, const TExtraType* extra, TStringType str, int length, int startoffset, int options, int* ovector, int ovecsize) = pcre16_exec;
};
template <>
struct TPcreTraits<wchar32> {
using TCharType = wchar32;
using TStringType = PCRE_SPTR32;
using TCodeType = pcre32;
using TExtraType = pcre32_extra;
static constexpr TCodeType* (*Compile)(TStringType pattern, int options, int* errcodeptr, const char** errptr, int* erroffset, const unsigned char* tableptr) = pcre32_compile2;
static constexpr TExtraType* (*Study)(const TCodeType* pattern, int options, const char** errptr) = pcre32_study;
static constexpr int (*Exec)(const TCodeType* code, const TExtraType* extra, TStringType str, int length, int startoffset, int options, int* ovector, int ovecsize) = pcre32_exec;
};
template <class TCharType>
struct TFreePcre;
template <>
struct TFreePcre<char> {
static inline void Destroy(void* ptr) noexcept {
pcre_free(ptr);
}
};
template <>
struct TFreePcre<wchar16> {
static inline void Destroy(void* ptr) noexcept {
pcre16_free(ptr);
}
};
template <>
struct TFreePcre<wchar32> {
static inline void Destroy(void* ptr) noexcept {
pcre32_free(ptr);
}
};
template <class TCharType>
struct TFreePcreExtra;
template <>
struct TFreePcreExtra<char> {
static inline void Destroy(pcre_extra* ptr) noexcept {
pcre_free_study(ptr);
}
};
template <>
struct TFreePcreExtra<wchar16> {
static inline void Destroy(pcre16_extra* ptr) noexcept {
pcre16_free_study(ptr);
}
};
template <>
struct TFreePcreExtra<wchar32> {
static inline void Destroy(pcre32_extra* ptr) noexcept {
pcre32_free_study(ptr);
}
};
template <typename TCharType>
using TPcreCode = THolder<typename TPcreTraits<TCharType>::TCodeType, TFreePcre<TCharType>>;
template <typename TCharType>
using TPcreExtra = THolder<typename TPcreTraits<TCharType>::TExtraType, TFreePcreExtra<TCharType>>;
}
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