JSON-Immutable-XS
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external/rapidjson/encodedstream.h view on Meta::CPAN
\tparam Encoding The interpretation of encoding of the stream. Either UTF8, UTF16LE, UTF16BE, UTF32LE, UTF32BE.
\tparam InputByteStream Type of input byte stream. For example, FileReadStream.
*/
template <typename Encoding, typename InputByteStream>
class EncodedInputStream {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
public:
typedef typename Encoding::Ch Ch;
EncodedInputStream(InputByteStream& is) : is_(is) {
current_ = Encoding::TakeBOM(is_);
}
Ch Peek() const { return current_; }
Ch Take() { Ch c = current_; current_ = Encoding::Take(is_); return c; }
size_t Tell() const { return is_.Tell(); }
// Not implemented
void Put(Ch) { RAPIDJSON_ASSERT(false); }
void Flush() { RAPIDJSON_ASSERT(false); }
Ch* PutBegin() { RAPIDJSON_ASSERT(false); return 0; }
external/rapidjson/encodedstream.h view on Meta::CPAN
/*!
\tparam Encoding The interpretation of encoding of the stream. Either UTF8, UTF16LE, UTF16BE, UTF32LE, UTF32BE.
\tparam OutputByteStream Type of input byte stream. For example, FileWriteStream.
*/
template <typename Encoding, typename OutputByteStream>
class EncodedOutputStream {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
public:
typedef typename Encoding::Ch Ch;
EncodedOutputStream(OutputByteStream& os, bool putBOM = true) : os_(os) {
if (putBOM)
Encoding::PutBOM(os_);
}
void Put(Ch c) { Encoding::Put(os_, c); }
void Flush() { os_.Flush(); }
// Not implemented
Ch Peek() const { RAPIDJSON_ASSERT(false); return 0;}
Ch Take() { RAPIDJSON_ASSERT(false); return 0;}
size_t Tell() const { RAPIDJSON_ASSERT(false); return 0; }
Ch* PutBegin() { RAPIDJSON_ASSERT(false); return 0; }
external/rapidjson/encodedstream.h view on Meta::CPAN
class AutoUTFInputStream {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
public:
typedef CharType Ch;
//! Constructor.
/*!
\param is input stream to be wrapped.
\param type UTF encoding type if it is not detected from the stream.
*/
AutoUTFInputStream(InputByteStream& is, UTFType type = kUTF8) : is_(&is), type_(type), hasBOM_(false) {
RAPIDJSON_ASSERT(type >= kUTF8 && type <= kUTF32BE);
DetectType();
static const TakeFunc f[] = { RAPIDJSON_ENCODINGS_FUNC(Take) };
takeFunc_ = f[type_];
current_ = takeFunc_(*is_);
}
UTFType GetType() const { return type_; }
bool HasBOM() const { return hasBOM_; }
Ch Peek() const { return current_; }
Ch Take() { Ch c = current_; current_ = takeFunc_(*is_); return c; }
size_t Tell() const { return is_->Tell(); }
// Not implemented
void Put(Ch) { RAPIDJSON_ASSERT(false); }
void Flush() { RAPIDJSON_ASSERT(false); }
Ch* PutBegin() { RAPIDJSON_ASSERT(false); return 0; }
size_t PutEnd(Ch*) { RAPIDJSON_ASSERT(false); return 0; }
private:
AutoUTFInputStream(const AutoUTFInputStream&);
AutoUTFInputStream& operator=(const AutoUTFInputStream&);
// Detect encoding type with BOM or RFC 4627
void DetectType() {
// BOM (Byte Order Mark):
// 00 00 FE FF UTF-32BE
// FF FE 00 00 UTF-32LE
// FE FF UTF-16BE
// FF FE UTF-16LE
// EF BB BF UTF-8
const unsigned char* c = reinterpret_cast<const unsigned char *>(is_->Peek4());
if (!c)
return;
unsigned bom = static_cast<unsigned>(c[0] | (c[1] << 8) | (c[2] << 16) | (c[3] << 24));
hasBOM_ = false;
if (bom == 0xFFFE0000) { type_ = kUTF32BE; hasBOM_ = true; is_->Take(); is_->Take(); is_->Take(); is_->Take(); }
else if (bom == 0x0000FEFF) { type_ = kUTF32LE; hasBOM_ = true; is_->Take(); is_->Take(); is_->Take(); is_->Take(); }
else if ((bom & 0xFFFF) == 0xFFFE) { type_ = kUTF16BE; hasBOM_ = true; is_->Take(); is_->Take(); }
else if ((bom & 0xFFFF) == 0xFEFF) { type_ = kUTF16LE; hasBOM_ = true; is_->Take(); is_->Take(); }
else if ((bom & 0xFFFFFF) == 0xBFBBEF) { type_ = kUTF8; hasBOM_ = true; is_->Take(); is_->Take(); is_->Take(); }
// RFC 4627: Section 3
// "Since the first two characters of a JSON text will always be ASCII
// characters [RFC0020], it is possible to determine whether an octet
// stream is UTF-8, UTF-16 (BE or LE), or UTF-32 (BE or LE) by looking
// at the pattern of nulls in the first four octets."
// 00 00 00 xx UTF-32BE
// 00 xx 00 xx UTF-16BE
// xx 00 00 00 UTF-32LE
// xx 00 xx 00 UTF-16LE
// xx xx xx xx UTF-8
if (!hasBOM_) {
int pattern = (c[0] ? 1 : 0) | (c[1] ? 2 : 0) | (c[2] ? 4 : 0) | (c[3] ? 8 : 0);
switch (pattern) {
case 0x08: type_ = kUTF32BE; break;
case 0x0A: type_ = kUTF16BE; break;
case 0x01: type_ = kUTF32LE; break;
case 0x05: type_ = kUTF16LE; break;
case 0x0F: type_ = kUTF8; break;
default: break; // Use type defined by user.
}
}
external/rapidjson/encodedstream.h view on Meta::CPAN
// Runtime check whether the size of character type is sufficient. It only perform checks with assertion.
if (type_ == kUTF16LE || type_ == kUTF16BE) RAPIDJSON_ASSERT(sizeof(Ch) >= 2);
if (type_ == kUTF32LE || type_ == kUTF32BE) RAPIDJSON_ASSERT(sizeof(Ch) >= 4);
}
typedef Ch (*TakeFunc)(InputByteStream& is);
InputByteStream* is_;
UTFType type_;
Ch current_;
TakeFunc takeFunc_;
bool hasBOM_;
};
//! Output stream wrapper with dynamically bound encoding and automatic encoding detection.
/*!
\tparam CharType Type of character for writing.
\tparam OutputByteStream type of output byte stream to be wrapped.
*/
template <typename CharType, typename OutputByteStream>
class AutoUTFOutputStream {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
public:
typedef CharType Ch;
//! Constructor.
/*!
\param os output stream to be wrapped.
\param type UTF encoding type.
\param putBOM Whether to write BOM at the beginning of the stream.
*/
AutoUTFOutputStream(OutputByteStream& os, UTFType type, bool putBOM) : os_(&os), type_(type) {
RAPIDJSON_ASSERT(type >= kUTF8 && type <= kUTF32BE);
// Runtime check whether the size of character type is sufficient. It only perform checks with assertion.
if (type_ == kUTF16LE || type_ == kUTF16BE) RAPIDJSON_ASSERT(sizeof(Ch) >= 2);
if (type_ == kUTF32LE || type_ == kUTF32BE) RAPIDJSON_ASSERT(sizeof(Ch) >= 4);
static const PutFunc f[] = { RAPIDJSON_ENCODINGS_FUNC(Put) };
putFunc_ = f[type_];
if (putBOM)
PutBOM();
}
UTFType GetType() const { return type_; }
void Put(Ch c) { putFunc_(*os_, c); }
void Flush() { os_->Flush(); }
// Not implemented
Ch Peek() const { RAPIDJSON_ASSERT(false); return 0;}
Ch Take() { RAPIDJSON_ASSERT(false); return 0;}
size_t Tell() const { RAPIDJSON_ASSERT(false); return 0; }
Ch* PutBegin() { RAPIDJSON_ASSERT(false); return 0; }
size_t PutEnd(Ch*) { RAPIDJSON_ASSERT(false); return 0; }
private:
AutoUTFOutputStream(const AutoUTFOutputStream&);
AutoUTFOutputStream& operator=(const AutoUTFOutputStream&);
void PutBOM() {
typedef void (*PutBOMFunc)(OutputByteStream&);
static const PutBOMFunc f[] = { RAPIDJSON_ENCODINGS_FUNC(PutBOM) };
f[type_](*os_);
}
typedef void (*PutFunc)(OutputByteStream&, Ch);
OutputByteStream* os_;
UTFType type_;
PutFunc putFunc_;
};
external/rapidjson/encodings.h view on Meta::CPAN
//! \brief Validate one Unicode codepoint from an encoded stream.
//! \param is Input stream to obtain codepoint.
//! \param os Output for copying one codepoint.
//! \return true if it is valid.
//! \note This function just validating and copying the codepoint without actually decode it.
template <typename InputStream, typename OutputStream>
static bool Validate(InputStream& is, OutputStream& os);
// The following functions are deal with byte streams.
//! Take a character from input byte stream, skip BOM if exist.
template <typename InputByteStream>
static CharType TakeBOM(InputByteStream& is);
//! Take a character from input byte stream.
template <typename InputByteStream>
static Ch Take(InputByteStream& is);
//! Put BOM to output byte stream.
template <typename OutputByteStream>
static void PutBOM(OutputByteStream& os);
//! Put a character to output byte stream.
template <typename OutputByteStream>
static void Put(OutputByteStream& os, Ch c);
};
\endcode
*/
///////////////////////////////////////////////////////////////////////////////
// UTF8
external/rapidjson/encodings.h view on Meta::CPAN
0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,
0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
10,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3, 11,6,6,6,5,8,8,8,8,8,8,8,8,8,8,8,
};
return type[c];
}
template <typename InputByteStream>
static CharType TakeBOM(InputByteStream& is) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
typename InputByteStream::Ch c = Take(is);
if (static_cast<unsigned char>(c) != 0xEFu) return c;
c = is.Take();
if (static_cast<unsigned char>(c) != 0xBBu) return c;
c = is.Take();
if (static_cast<unsigned char>(c) != 0xBFu) return c;
c = is.Take();
return c;
}
template <typename InputByteStream>
static Ch Take(InputByteStream& is) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
return static_cast<Ch>(is.Take());
}
template <typename OutputByteStream>
static void PutBOM(OutputByteStream& os) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
os.Put(static_cast<typename OutputByteStream::Ch>(0xEFu));
os.Put(static_cast<typename OutputByteStream::Ch>(0xBBu));
os.Put(static_cast<typename OutputByteStream::Ch>(0xBFu));
}
template <typename OutputByteStream>
static void Put(OutputByteStream& os, Ch c) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
os.Put(static_cast<typename OutputByteStream::Ch>(c));
external/rapidjson/encodings.h view on Meta::CPAN
return c >= 0xDC00 && c <= 0xDFFF;
}
return false;
}
};
//! UTF-16 little endian encoding.
template<typename CharType = wchar_t>
struct UTF16LE : UTF16<CharType> {
template <typename InputByteStream>
static CharType TakeBOM(InputByteStream& is) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
CharType c = Take(is);
return static_cast<uint16_t>(c) == 0xFEFFu ? Take(is) : c;
}
template <typename InputByteStream>
static CharType Take(InputByteStream& is) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
unsigned c = static_cast<uint8_t>(is.Take());
c |= static_cast<unsigned>(static_cast<uint8_t>(is.Take())) << 8;
return static_cast<CharType>(c);
}
template <typename OutputByteStream>
static void PutBOM(OutputByteStream& os) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
os.Put(static_cast<typename OutputByteStream::Ch>(0xFFu));
os.Put(static_cast<typename OutputByteStream::Ch>(0xFEu));
}
template <typename OutputByteStream>
static void Put(OutputByteStream& os, CharType c) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
os.Put(static_cast<typename OutputByteStream::Ch>(static_cast<unsigned>(c) & 0xFFu));
os.Put(static_cast<typename OutputByteStream::Ch>((static_cast<unsigned>(c) >> 8) & 0xFFu));
}
};
//! UTF-16 big endian encoding.
template<typename CharType = wchar_t>
struct UTF16BE : UTF16<CharType> {
template <typename InputByteStream>
static CharType TakeBOM(InputByteStream& is) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
CharType c = Take(is);
return static_cast<uint16_t>(c) == 0xFEFFu ? Take(is) : c;
}
template <typename InputByteStream>
static CharType Take(InputByteStream& is) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
unsigned c = static_cast<unsigned>(static_cast<uint8_t>(is.Take())) << 8;
c |= static_cast<uint8_t>(is.Take());
return static_cast<CharType>(c);
}
template <typename OutputByteStream>
static void PutBOM(OutputByteStream& os) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
os.Put(static_cast<typename OutputByteStream::Ch>(0xFEu));
os.Put(static_cast<typename OutputByteStream::Ch>(0xFFu));
}
template <typename OutputByteStream>
static void Put(OutputByteStream& os, CharType c) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
os.Put(static_cast<typename OutputByteStream::Ch>((static_cast<unsigned>(c) >> 8) & 0xFFu));
os.Put(static_cast<typename OutputByteStream::Ch>(static_cast<unsigned>(c) & 0xFFu));
external/rapidjson/encodings.h view on Meta::CPAN
Ch c;
os.Put(c = is.Take());
return c <= 0x10FFFF;
}
};
//! UTF-32 little endian enocoding.
template<typename CharType = unsigned>
struct UTF32LE : UTF32<CharType> {
template <typename InputByteStream>
static CharType TakeBOM(InputByteStream& is) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
CharType c = Take(is);
return static_cast<uint32_t>(c) == 0x0000FEFFu ? Take(is) : c;
}
template <typename InputByteStream>
static CharType Take(InputByteStream& is) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
unsigned c = static_cast<uint8_t>(is.Take());
c |= static_cast<unsigned>(static_cast<uint8_t>(is.Take())) << 8;
c |= static_cast<unsigned>(static_cast<uint8_t>(is.Take())) << 16;
c |= static_cast<unsigned>(static_cast<uint8_t>(is.Take())) << 24;
return static_cast<CharType>(c);
}
template <typename OutputByteStream>
static void PutBOM(OutputByteStream& os) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
os.Put(static_cast<typename OutputByteStream::Ch>(0xFFu));
os.Put(static_cast<typename OutputByteStream::Ch>(0xFEu));
os.Put(static_cast<typename OutputByteStream::Ch>(0x00u));
os.Put(static_cast<typename OutputByteStream::Ch>(0x00u));
}
template <typename OutputByteStream>
static void Put(OutputByteStream& os, CharType c) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
external/rapidjson/encodings.h view on Meta::CPAN
os.Put(static_cast<typename OutputByteStream::Ch>((c >> 8) & 0xFFu));
os.Put(static_cast<typename OutputByteStream::Ch>((c >> 16) & 0xFFu));
os.Put(static_cast<typename OutputByteStream::Ch>((c >> 24) & 0xFFu));
}
};
//! UTF-32 big endian encoding.
template<typename CharType = unsigned>
struct UTF32BE : UTF32<CharType> {
template <typename InputByteStream>
static CharType TakeBOM(InputByteStream& is) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
CharType c = Take(is);
return static_cast<uint32_t>(c) == 0x0000FEFFu ? Take(is) : c;
}
template <typename InputByteStream>
static CharType Take(InputByteStream& is) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
unsigned c = static_cast<unsigned>(static_cast<uint8_t>(is.Take())) << 24;
c |= static_cast<unsigned>(static_cast<uint8_t>(is.Take())) << 16;
c |= static_cast<unsigned>(static_cast<uint8_t>(is.Take())) << 8;
c |= static_cast<unsigned>(static_cast<uint8_t>(is.Take()));
return static_cast<CharType>(c);
}
template <typename OutputByteStream>
static void PutBOM(OutputByteStream& os) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
os.Put(static_cast<typename OutputByteStream::Ch>(0x00u));
os.Put(static_cast<typename OutputByteStream::Ch>(0x00u));
os.Put(static_cast<typename OutputByteStream::Ch>(0xFEu));
os.Put(static_cast<typename OutputByteStream::Ch>(0xFFu));
}
template <typename OutputByteStream>
static void Put(OutputByteStream& os, CharType c) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
external/rapidjson/encodings.h view on Meta::CPAN
}
template <typename InputStream, typename OutputStream>
static bool Validate(InputStream& is, OutputStream& os) {
uint8_t c = static_cast<uint8_t>(is.Take());
os.Put(static_cast<typename OutputStream::Ch>(c));
return c <= 0x7F;
}
template <typename InputByteStream>
static CharType TakeBOM(InputByteStream& is) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
uint8_t c = static_cast<uint8_t>(Take(is));
return static_cast<Ch>(c);
}
template <typename InputByteStream>
static Ch Take(InputByteStream& is) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename InputByteStream::Ch) == 1);
return static_cast<Ch>(is.Take());
}
template <typename OutputByteStream>
static void PutBOM(OutputByteStream& os) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
(void)os;
}
template <typename OutputByteStream>
static void Put(OutputByteStream& os, Ch c) {
RAPIDJSON_STATIC_ASSERT(sizeof(typename OutputByteStream::Ch) == 1);
os.Put(static_cast<typename OutputByteStream::Ch>(c));
}
};
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