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Reformat all code to coding standard
This commit is contained in:
Andrew Hutchings
@ -33,292 +33,359 @@ DEALINGS IN THE SOFTWARE.
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namespace utf8
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{
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// Base for the exceptions that may be thrown from the library
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class exception : public ::std::exception {
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};
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// Base for the exceptions that may be thrown from the library
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class exception : public ::std::exception
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{
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};
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// Exceptions that may be thrown from the library functions.
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class invalid_code_point : public exception {
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uint32_t cp;
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public:
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invalid_code_point(uint32_t cp) : cp(cp) {}
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virtual const char* what() const throw() { return "Invalid code point"; }
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uint32_t code_point() const {return cp;}
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};
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class invalid_utf8 : public exception {
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uint8_t u8;
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public:
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invalid_utf8 (uint8_t u) : u8(u) {}
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virtual const char* what() const throw() { return "Invalid UTF-8"; }
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uint8_t utf8_octet() const {return u8;}
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};
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class invalid_utf16 : public exception {
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uint16_t u16;
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public:
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invalid_utf16 (uint16_t u) : u16(u) {}
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virtual const char* what() const throw() { return "Invalid UTF-16"; }
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uint16_t utf16_word() const {return u16;}
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};
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class not_enough_room : public exception {
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public:
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virtual const char* what() const throw() { return "Not enough space"; }
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};
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/// The library API - functions intended to be called by the users
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template <typename octet_iterator>
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octet_iterator append(uint32_t cp, octet_iterator result)
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// Exceptions that may be thrown from the library functions.
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class invalid_code_point : public exception
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{
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uint32_t cp;
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public:
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invalid_code_point(uint32_t cp) : cp(cp) {}
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virtual const char* what() const throw()
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{
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if (!utf8::internal::is_code_point_valid(cp))
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throw invalid_code_point(cp);
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if (cp < 0x80) // one octet
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*(result++) = static_cast<uint8_t>(cp);
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else if (cp < 0x800) { // two octets
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*(result++) = static_cast<uint8_t>((cp >> 6) | 0xc0);
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*(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
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}
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else if (cp < 0x10000) { // three octets
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*(result++) = static_cast<uint8_t>((cp >> 12) | 0xe0);
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*(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
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*(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
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}
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else { // four octets
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*(result++) = static_cast<uint8_t>((cp >> 18) | 0xf0);
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*(result++) = static_cast<uint8_t>(((cp >> 12) & 0x3f) | 0x80);
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*(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
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*(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
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}
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return result;
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return "Invalid code point";
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}
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template <typename octet_iterator, typename output_iterator>
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output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out, uint32_t replacement)
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uint32_t code_point() const
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{
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while (start != end) {
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octet_iterator sequence_start = start;
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internal::utf_error err_code = utf8::internal::validate_next(start, end);
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switch (err_code) {
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case internal::UTF8_OK :
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for (octet_iterator it = sequence_start; it != start; ++it)
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*out++ = *it;
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break;
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case internal::NOT_ENOUGH_ROOM:
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throw not_enough_room();
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case internal::INVALID_LEAD:
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out = utf8::append (replacement, out);
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++start;
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break;
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case internal::INCOMPLETE_SEQUENCE:
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case internal::OVERLONG_SEQUENCE:
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case internal::INVALID_CODE_POINT:
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out = utf8::append (replacement, out);
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++start;
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// just one replacement mark for the sequence
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while (start != end && utf8::internal::is_trail(*start))
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++start;
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break;
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}
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}
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return out;
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}
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template <typename octet_iterator, typename output_iterator>
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inline output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out)
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{
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static const uint32_t replacement_marker = utf8::internal::mask16(0xfffd);
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return utf8::replace_invalid(start, end, out, replacement_marker);
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}
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template <typename octet_iterator>
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uint32_t next(octet_iterator& it, octet_iterator end)
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{
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uint32_t cp = 0;
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internal::utf_error err_code = utf8::internal::validate_next(it, end, cp);
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switch (err_code) {
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case internal::UTF8_OK :
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break;
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case internal::NOT_ENOUGH_ROOM :
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throw not_enough_room();
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case internal::INVALID_LEAD :
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case internal::INCOMPLETE_SEQUENCE :
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case internal::OVERLONG_SEQUENCE :
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throw invalid_utf8(*it);
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case internal::INVALID_CODE_POINT :
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throw invalid_code_point(cp);
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}
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return cp;
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}
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};
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template <typename octet_iterator>
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uint32_t peek_next(octet_iterator it, octet_iterator end)
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class invalid_utf8 : public exception
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{
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uint8_t u8;
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public:
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invalid_utf8 (uint8_t u) : u8(u) {}
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virtual const char* what() const throw()
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{
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return utf8::next(it, end);
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return "Invalid UTF-8";
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}
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uint8_t utf8_octet() const
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{
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return u8;
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}
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};
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class invalid_utf16 : public exception
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{
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uint16_t u16;
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public:
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invalid_utf16 (uint16_t u) : u16(u) {}
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virtual const char* what() const throw()
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{
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return "Invalid UTF-16";
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}
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uint16_t utf16_word() const
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{
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return u16;
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}
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};
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class not_enough_room : public exception
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{
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public:
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virtual const char* what() const throw()
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{
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return "Not enough space";
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}
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};
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/// The library API - functions intended to be called by the users
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template <typename octet_iterator>
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octet_iterator append(uint32_t cp, octet_iterator result)
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{
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if (!utf8::internal::is_code_point_valid(cp))
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throw invalid_code_point(cp);
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if (cp < 0x80) // one octet
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*(result++) = static_cast<uint8_t>(cp);
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else if (cp < 0x800) // two octets
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{
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*(result++) = static_cast<uint8_t>((cp >> 6) | 0xc0);
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*(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
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}
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else if (cp < 0x10000) // three octets
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{
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*(result++) = static_cast<uint8_t>((cp >> 12) | 0xe0);
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*(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
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*(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
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}
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else // four octets
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{
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*(result++) = static_cast<uint8_t>((cp >> 18) | 0xf0);
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*(result++) = static_cast<uint8_t>(((cp >> 12) & 0x3f) | 0x80);
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*(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
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*(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
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}
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template <typename octet_iterator>
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uint32_t prior(octet_iterator& it, octet_iterator start)
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return result;
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}
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template <typename octet_iterator, typename output_iterator>
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output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out, uint32_t replacement)
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{
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while (start != end)
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{
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// can't do much if it == start
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if (it == start)
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octet_iterator sequence_start = start;
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internal::utf_error err_code = utf8::internal::validate_next(start, end);
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switch (err_code)
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{
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case internal::UTF8_OK :
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for (octet_iterator it = sequence_start; it != start; ++it)
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*out++ = *it;
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break;
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case internal::NOT_ENOUGH_ROOM:
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throw not_enough_room();
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case internal::INVALID_LEAD:
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out = utf8::append (replacement, out);
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++start;
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break;
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case internal::INCOMPLETE_SEQUENCE:
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case internal::OVERLONG_SEQUENCE:
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case internal::INVALID_CODE_POINT:
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out = utf8::append (replacement, out);
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++start;
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// just one replacement mark for the sequence
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while (start != end && utf8::internal::is_trail(*start))
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++start;
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break;
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}
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}
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return out;
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}
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template <typename octet_iterator, typename output_iterator>
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inline output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out)
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{
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static const uint32_t replacement_marker = utf8::internal::mask16(0xfffd);
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return utf8::replace_invalid(start, end, out, replacement_marker);
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}
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template <typename octet_iterator>
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uint32_t next(octet_iterator& it, octet_iterator end)
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{
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uint32_t cp = 0;
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internal::utf_error err_code = utf8::internal::validate_next(it, end, cp);
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switch (err_code)
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{
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case internal::UTF8_OK :
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break;
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case internal::NOT_ENOUGH_ROOM :
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throw not_enough_room();
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octet_iterator end = it;
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// Go back until we hit either a lead octet or start
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while (utf8::internal::is_trail(*(--it)))
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if (it == start)
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throw invalid_utf8(*it); // error - no lead byte in the sequence
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return utf8::peek_next(it, end);
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case internal::INVALID_LEAD :
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case internal::INCOMPLETE_SEQUENCE :
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case internal::OVERLONG_SEQUENCE :
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throw invalid_utf8(*it);
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case internal::INVALID_CODE_POINT :
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throw invalid_code_point(cp);
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}
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/// Deprecated in versions that include "prior"
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template <typename octet_iterator>
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uint32_t previous(octet_iterator& it, octet_iterator pass_start)
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{
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octet_iterator end = it;
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while (utf8::internal::is_trail(*(--it)))
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if (it == pass_start)
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throw invalid_utf8(*it); // error - no lead byte in the sequence
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octet_iterator temp = it;
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return utf8::next(temp, end);
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}
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return cp;
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}
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template <typename octet_iterator, typename distance_type>
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void advance (octet_iterator& it, distance_type n, octet_iterator end)
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{
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for (distance_type i = 0; i < n; ++i)
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utf8::next(it, end);
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}
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template <typename octet_iterator>
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uint32_t peek_next(octet_iterator it, octet_iterator end)
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{
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return utf8::next(it, end);
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}
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template <typename octet_iterator>
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typename std::iterator_traits<octet_iterator>::difference_type
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distance (octet_iterator first, octet_iterator last)
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{
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typename std::iterator_traits<octet_iterator>::difference_type dist;
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for (dist = 0; first < last; ++dist)
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utf8::next(first, last);
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return dist;
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}
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template <typename octet_iterator>
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uint32_t prior(octet_iterator& it, octet_iterator start)
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{
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// can't do much if it == start
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if (it == start)
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throw not_enough_room();
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template <typename u16bit_iterator, typename octet_iterator>
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octet_iterator utf16to8 (u16bit_iterator start, u16bit_iterator end, octet_iterator result)
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octet_iterator end = it;
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// Go back until we hit either a lead octet or start
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while (utf8::internal::is_trail(*(--it)))
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if (it == start)
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throw invalid_utf8(*it); // error - no lead byte in the sequence
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return utf8::peek_next(it, end);
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}
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/// Deprecated in versions that include "prior"
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template <typename octet_iterator>
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uint32_t previous(octet_iterator& it, octet_iterator pass_start)
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{
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octet_iterator end = it;
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while (utf8::internal::is_trail(*(--it)))
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if (it == pass_start)
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throw invalid_utf8(*it); // error - no lead byte in the sequence
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octet_iterator temp = it;
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return utf8::next(temp, end);
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}
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template <typename octet_iterator, typename distance_type>
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void advance (octet_iterator& it, distance_type n, octet_iterator end)
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{
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for (distance_type i = 0; i < n; ++i)
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utf8::next(it, end);
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}
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template <typename octet_iterator>
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typename std::iterator_traits<octet_iterator>::difference_type
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distance (octet_iterator first, octet_iterator last)
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{
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typename std::iterator_traits<octet_iterator>::difference_type dist;
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for (dist = 0; first < last; ++dist)
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utf8::next(first, last);
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return dist;
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}
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template <typename u16bit_iterator, typename octet_iterator>
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octet_iterator utf16to8 (u16bit_iterator start, u16bit_iterator end, octet_iterator result)
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{
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while (start != end)
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{
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while (start != end) {
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uint32_t cp = utf8::internal::mask16(*start++);
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// Take care of surrogate pairs first
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if (utf8::internal::is_lead_surrogate(cp)) {
|
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if (start != end) {
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uint32_t trail_surrogate = utf8::internal::mask16(*start++);
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if (utf8::internal::is_trail_surrogate(trail_surrogate))
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cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET;
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else
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throw invalid_utf16(static_cast<uint16_t>(trail_surrogate));
|
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}
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uint32_t cp = utf8::internal::mask16(*start++);
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||||
|
||||
// Take care of surrogate pairs first
|
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if (utf8::internal::is_lead_surrogate(cp))
|
||||
{
|
||||
if (start != end)
|
||||
{
|
||||
uint32_t trail_surrogate = utf8::internal::mask16(*start++);
|
||||
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||||
if (utf8::internal::is_trail_surrogate(trail_surrogate))
|
||||
cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET;
|
||||
else
|
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throw invalid_utf16(static_cast<uint16_t>(cp));
|
||||
|
||||
}
|
||||
// Lone trail surrogate
|
||||
else if (utf8::internal::is_trail_surrogate(cp))
|
||||
throw invalid_utf16(static_cast<uint16_t>(cp));
|
||||
|
||||
result = utf8::append(cp, result);
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
template <typename u16bit_iterator, typename octet_iterator>
|
||||
u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result)
|
||||
{
|
||||
while (start != end) {
|
||||
uint32_t cp = utf8::next(start, end);
|
||||
if (cp > 0xffff) { //make a surrogate pair
|
||||
*result++ = static_cast<uint16_t>((cp >> 10) + internal::LEAD_OFFSET);
|
||||
*result++ = static_cast<uint16_t>((cp & 0x3ff) + internal::TRAIL_SURROGATE_MIN);
|
||||
throw invalid_utf16(static_cast<uint16_t>(trail_surrogate));
|
||||
}
|
||||
else
|
||||
*result++ = static_cast<uint16_t>(cp);
|
||||
throw invalid_utf16(static_cast<uint16_t>(cp));
|
||||
|
||||
}
|
||||
return result;
|
||||
// Lone trail surrogate
|
||||
else if (utf8::internal::is_trail_surrogate(cp))
|
||||
throw invalid_utf16(static_cast<uint16_t>(cp));
|
||||
|
||||
result = utf8::append(cp, result);
|
||||
}
|
||||
|
||||
template <typename octet_iterator, typename u32bit_iterator>
|
||||
octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result)
|
||||
return result;
|
||||
}
|
||||
|
||||
template <typename u16bit_iterator, typename octet_iterator>
|
||||
u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result)
|
||||
{
|
||||
while (start != end)
|
||||
{
|
||||
while (start != end)
|
||||
result = utf8::append(*(start++), result);
|
||||
uint32_t cp = utf8::next(start, end);
|
||||
|
||||
return result;
|
||||
if (cp > 0xffff) //make a surrogate pair
|
||||
{
|
||||
*result++ = static_cast<uint16_t>((cp >> 10) + internal::LEAD_OFFSET);
|
||||
*result++ = static_cast<uint16_t>((cp & 0x3ff) + internal::TRAIL_SURROGATE_MIN);
|
||||
}
|
||||
else
|
||||
*result++ = static_cast<uint16_t>(cp);
|
||||
}
|
||||
|
||||
template <typename octet_iterator, typename u32bit_iterator>
|
||||
u32bit_iterator utf8to32 (octet_iterator start, octet_iterator end, u32bit_iterator result)
|
||||
return result;
|
||||
}
|
||||
|
||||
template <typename octet_iterator, typename u32bit_iterator>
|
||||
octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result)
|
||||
{
|
||||
while (start != end)
|
||||
result = utf8::append(*(start++), result);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
template <typename octet_iterator, typename u32bit_iterator>
|
||||
u32bit_iterator utf8to32 (octet_iterator start, octet_iterator end, u32bit_iterator result)
|
||||
{
|
||||
while (start != end)
|
||||
(*result++) = utf8::next(start, end);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
// The iterator class
|
||||
template <typename octet_iterator>
|
||||
class iterator : public std::iterator <std::bidirectional_iterator_tag, uint32_t>
|
||||
{
|
||||
octet_iterator it;
|
||||
octet_iterator range_start;
|
||||
octet_iterator range_end;
|
||||
public:
|
||||
iterator () {}
|
||||
explicit iterator (const octet_iterator& octet_it,
|
||||
const octet_iterator& range_start,
|
||||
const octet_iterator& range_end) :
|
||||
it(octet_it), range_start(range_start), range_end(range_end)
|
||||
{
|
||||
while (start != end)
|
||||
(*result++) = utf8::next(start, end);
|
||||
|
||||
return result;
|
||||
if (it < range_start || it > range_end)
|
||||
throw std::out_of_range("Invalid utf-8 iterator position");
|
||||
}
|
||||
// the default "big three" are OK
|
||||
octet_iterator base () const
|
||||
{
|
||||
return it;
|
||||
}
|
||||
uint32_t operator * () const
|
||||
{
|
||||
octet_iterator temp = it;
|
||||
return utf8::next(temp, range_end);
|
||||
}
|
||||
bool operator == (const iterator& rhs) const
|
||||
{
|
||||
if (range_start != rhs.range_start || range_end != rhs.range_end)
|
||||
throw std::logic_error("Comparing utf-8 iterators defined with different ranges");
|
||||
|
||||
// The iterator class
|
||||
template <typename octet_iterator>
|
||||
class iterator : public std::iterator <std::bidirectional_iterator_tag, uint32_t> {
|
||||
octet_iterator it;
|
||||
octet_iterator range_start;
|
||||
octet_iterator range_end;
|
||||
public:
|
||||
iterator () {}
|
||||
explicit iterator (const octet_iterator& octet_it,
|
||||
const octet_iterator& range_start,
|
||||
const octet_iterator& range_end) :
|
||||
it(octet_it), range_start(range_start), range_end(range_end)
|
||||
{
|
||||
if (it < range_start || it > range_end)
|
||||
throw std::out_of_range("Invalid utf-8 iterator position");
|
||||
}
|
||||
// the default "big three" are OK
|
||||
octet_iterator base () const { return it; }
|
||||
uint32_t operator * () const
|
||||
{
|
||||
octet_iterator temp = it;
|
||||
return utf8::next(temp, range_end);
|
||||
}
|
||||
bool operator == (const iterator& rhs) const
|
||||
{
|
||||
if (range_start != rhs.range_start || range_end != rhs.range_end)
|
||||
throw std::logic_error("Comparing utf-8 iterators defined with different ranges");
|
||||
return (it == rhs.it);
|
||||
}
|
||||
bool operator != (const iterator& rhs) const
|
||||
{
|
||||
return !(operator == (rhs));
|
||||
}
|
||||
iterator& operator ++ ()
|
||||
{
|
||||
utf8::next(it, range_end);
|
||||
return *this;
|
||||
}
|
||||
iterator operator ++ (int)
|
||||
{
|
||||
iterator temp = *this;
|
||||
utf8::next(it, range_end);
|
||||
return temp;
|
||||
}
|
||||
iterator& operator -- ()
|
||||
{
|
||||
utf8::prior(it, range_start);
|
||||
return *this;
|
||||
}
|
||||
iterator operator -- (int)
|
||||
{
|
||||
iterator temp = *this;
|
||||
utf8::prior(it, range_start);
|
||||
return temp;
|
||||
}
|
||||
}; // class iterator
|
||||
return (it == rhs.it);
|
||||
}
|
||||
bool operator != (const iterator& rhs) const
|
||||
{
|
||||
return !(operator == (rhs));
|
||||
}
|
||||
iterator& operator ++ ()
|
||||
{
|
||||
utf8::next(it, range_end);
|
||||
return *this;
|
||||
}
|
||||
iterator operator ++ (int)
|
||||
{
|
||||
iterator temp = *this;
|
||||
utf8::next(it, range_end);
|
||||
return temp;
|
||||
}
|
||||
iterator& operator -- ()
|
||||
{
|
||||
utf8::prior(it, range_start);
|
||||
return *this;
|
||||
}
|
||||
iterator operator -- (int)
|
||||
{
|
||||
iterator temp = *this;
|
||||
utf8::prior(it, range_start);
|
||||
return temp;
|
||||
}
|
||||
}; // class iterator
|
||||
|
||||
} // namespace utf8
|
||||
|
||||
|
||||
Reference in New Issue
Block a user