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#pragma once
#include <util/generic/string.h>
#include <util/generic/strbuf.h>
template <class TChar>
TBasicString<TChar>& EscapeCImpl(const TChar* str, size_t len, TBasicString<TChar>&);
template <class TChar>
TBasicString<TChar>& UnescapeCImpl(const TChar* str, size_t len, TBasicString<TChar>&);
template <class TChar>
TChar* UnescapeC(const TChar* str, size_t len, TChar* buf);
template <typename TChar>
static inline TBasicString<TChar>& EscapeC(const TChar* str, size_t len, TBasicString<TChar>& s) {
return EscapeCImpl(str, len, s);
}
template <typename TChar>
static inline TBasicString<TChar> EscapeC(const TChar* str, size_t len) {
TBasicString<TChar> s;
return EscapeC(str, len, s);
}
template <typename TChar>
static inline TBasicString<TChar> EscapeC(const TBasicStringBuf<TChar>& str) {
return EscapeC(str.data(), str.size());
}
template <typename TChar>
static inline TBasicString<TChar>& UnescapeC(const TChar* str, size_t len, TBasicString<TChar>& s) {
return UnescapeCImpl(str, len, s);
}
template <typename TChar>
static inline TBasicString<TChar> UnescapeC(const TChar* str, size_t len) {
TBasicString<TChar> s;
return UnescapeCImpl(str, len, s);
}
template <typename TChar>
static inline TBasicString<TChar> EscapeC(TChar ch) {
return EscapeC(&ch, 1);
}
template <typename TChar>
static inline TBasicString<TChar> EscapeC(const TChar* str) {
return EscapeC(str, std::char_traits<TChar>::length(str));
}
TString& EscapeC(const TStringBuf str, TString& res);
TUtf16String& EscapeC(const TWtringBuf str, TUtf16String& res);
// these two need to be methods, because of TBasicString::Quote implementation
TString EscapeC(const TString& str);
TUtf16String EscapeC(const TUtf16String& str);
TString& UnescapeC(const TStringBuf str, TString& res);
TUtf16String& UnescapeC(const TWtringBuf str, TUtf16String& res);
TString UnescapeC(const TStringBuf str);
TUtf16String UnescapeC(const TWtringBuf wtr);
/// Returns number of chars in escape sequence.
/// - 0, if begin >= end
/// - 1, if [begin, end) starts with an unescaped char
/// - at least 2 (including '\'), if [begin, end) starts with an escaped symbol
template <class TChar>
size_t UnescapeCCharLen(const TChar* begin, const TChar* end);
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