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304 lines
13 KiB
C++
304 lines
13 KiB
C++
#ifndef _RWLIB_FONTS_UNICODE_HPP_
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#define _RWLIB_FONTS_UNICODE_HPP_
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#include <cstdint>
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#include <iosfwd>
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#include <sstream>
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/**
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* unicode_t represent a unicode data point. (UTF-32)
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*/
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using unicode_t = char32_t;
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/**
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* @brief unicode_to_utf8 Encode a unicode data point to a (non-zero terminated) utf-8 string.
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* @param unicode The unicode data point to convert
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* @param c buffer to write the utf-8 data to
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* @return number of bytes written
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*/
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size_t unicode_to_utf8(unicode_t unicode, char c[4]);
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/**
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* @brief Iterate over a utf8 string stream. Output unicode data points.
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*/
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class Utf8UnicodeIterator {
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private:
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/**
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* @brief m_is Pointer to the utf8 stream to iterate over.
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*/
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std::istream *m_is = nullptr;
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/**
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* @brief m_finished true if the stream is finished/invalid.
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*/
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bool m_finished = true;
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/**
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* @brief m_unicode Current unicode point.
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*/
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unicode_t m_unicode;
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/**
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* @brief next_unicode Move to the next unicode point.
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*/
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void next_unicode();
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public:
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/**
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* @brief Create an empty unicode iterator. The iterator is not good.
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*/
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Utf8UnicodeIterator() = default;
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/**
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* @brief Create a unicode iterator that iterates over a utf8 stream.
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* @param is utf8 stream
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*/
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Utf8UnicodeIterator(std::istream &is);
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/**
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* @brief operator ++ Move to the next unicode character.
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* Only call this function when the iterator is good.
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* @return this object
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*/
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Utf8UnicodeIterator &operator ++();
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/**
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* @brief operator != Returns true if this iterator is good
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* @return true if this iterator is good
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*/
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bool operator!=(const Utf8UnicodeIterator &);
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/**
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* @brief operator * Returns the current unicode point
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* ONly call this function when the iterator is good.
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* @return unicode point
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*/
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unicode_t operator *() const;
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/**
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* @brief unicode Returns the current unicode point
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* Only call this function when the iterator is good.
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* @return unicode point
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*/
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unicode_t unicode() const;
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/**
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* @brief good Checks whether this stream is good.
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* A stream is good when a unicode point is available.
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* @return true if the stream is good, else false.
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*/
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bool good() const;
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};
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/**
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* @brief This class lets you iterate over a utf8 string using for ranged loop
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*/
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class Utf8UnicodeIteratorWrapper {
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public:
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/**
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* @brief Create a new wraper wrapper.
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* @param s The string that the utf8 to Unicode iterator should iterate over
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*/
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Utf8UnicodeIteratorWrapper(const std::string &s);
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/**
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* @brief Return the iterator at the start. This one returns unicode points.
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* @return Utf8UnicodeIterator of which will read the unicode points.
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*/
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Utf8UnicodeIterator begin();
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/**
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* @brief Return the unicode iterator at the end. This one is not good.
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* No unicode points can be read from this object.
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* @return Utf8UnicodeIterator Unicode iterator that is not good.
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*/
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Utf8UnicodeIterator end();
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private:
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/**
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* @brief iss This utf8 stream holds the wrapped string and returns bytes to convert to unicode.
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*/
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std::istringstream iss;
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};
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/**
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* Unicode data points used by OpenRW.
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*/
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enum UnicodeValue : unicode_t {
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UNICODE_TAB = 0x09, /* '\t' */
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UNICODE_NEW_LINE = 0x0a, /* '\n' */
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UNICODE_CARRIAGE_RETURN = 0x0d, /* '\r' */
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UNICODE_SPACE = 0x20, /* ' ' */
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UNICODE_EXCLAMATION_MARK = 0x21, /* '!' */
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UNICODE_QUOTATION_MARK = 0x22, /* '"' */
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UNICODE_NUMBER_SIGN = 0x23, /* '#' */
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UNICODE_DOLLAR_SIGN = 0x24, /* '$' */
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UNICODE_PROCENT_SIGN = 0x25, /* '%' */
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UNICODE_AMPERSAND = 0x26, /* '&' */
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UNICODE_APOSTROPHE = 0x27, /* ''' */
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UNICODE_LEFT_PARENTHESIS = 0x28, /* '(' */
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UNICODE_RIGHT_PARENTHESIS = 0x29, /* ')' */
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UNICODE_ASTERISK = 0x2a, /* '*' */
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UNICODE_PLUS_SIGN = 0x2b, /* '+' */
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UNICODE_COMMA = 0x2c, /* ',' */
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UNICODE_HYPHEN_MINUS = 0x2d, /* '-' */
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UNICODE_FULL_STOP = 0x2e, /* '.' */
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UNICODE_SOLIDUS = 0x2f, /* '/' */
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UNICODE_DIGIT_0 = 0x30, /* '0' */
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UNICODE_DIGIT_1 = 0x31, /* '1' */
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UNICODE_DIGIT_2 = 0x32, /* '2' */
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UNICODE_DIGIT_3 = 0x33, /* '3' */
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UNICODE_DIGIT_4 = 0x34, /* '4' */
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UNICODE_DIGIT_5 = 0x35, /* '5' */
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UNICODE_DIGIT_6 = 0x36, /* '6' */
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UNICODE_DIGIT_7 = 0x37, /* '7' */
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UNICODE_DIGIT_8 = 0x38, /* '8' */
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UNICODE_DIGIT_9 = 0x39, /* '9' */
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UNICODE_COLON = 0x3a, /* ':' */
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UNICODE_SEMICOLON = 0x3b, /* ';' */
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UNICODE_LESS_THAN_SIGN = 0x3c, /* '<' */
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UNICODE_EQUALS_SIGN = 0x3d, /* '=' */
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UNICODE_GREATER_THAN_SIGN = 0x3e, /* '>' */
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UNICODE_QUESTION_MARK = 0x3f, /* '?' */
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UNICODE_COMMERCIAL_AT = 0x40, /* '@' */
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UNICODE_CAPITAL_A = 0x41, /* 'A' */
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UNICODE_CAPITAL_B = 0x42, /* 'B' */
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UNICODE_CAPITAL_C = 0x43, /* 'C' */
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UNICODE_CAPITAL_D = 0x44, /* 'D' */
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UNICODE_CAPITAL_E = 0x45, /* 'E' */
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UNICODE_CAPITAL_F = 0x46, /* 'F' */
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UNICODE_CAPITAL_G = 0x47, /* 'G' */
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UNICODE_CAPITAL_H = 0x48, /* 'H' */
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UNICODE_CAPITAL_I = 0x49, /* 'I' */
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UNICODE_CAPITAL_J = 0x4a, /* 'J' */
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UNICODE_CAPITAL_K = 0x4b, /* 'K' */
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UNICODE_CAPITAL_L = 0x4c, /* 'L' */
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UNICODE_CAPITAL_M = 0x4d, /* 'M' */
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UNICODE_CAPITAL_N = 0x4e, /* 'N' */
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UNICODE_CAPITAL_O = 0x4f, /* 'O' */
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UNICODE_CAPITAL_P = 0x50, /* 'P' */
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UNICODE_CAPITAL_Q = 0x51, /* 'Q' */
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UNICODE_CAPITAL_R = 0x52, /* 'R' */
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UNICODE_CAPITAL_S = 0x53, /* 'S' */
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UNICODE_CAPITAL_T = 0x54, /* 'T' */
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UNICODE_CAPITAL_U = 0x55, /* 'U' */
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UNICODE_CAPITAL_V = 0x56, /* 'V' */
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UNICODE_CAPITAL_W = 0x57, /* 'W' */
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UNICODE_CAPITAL_X = 0x58, /* 'X' */
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UNICODE_CAPITAL_Y = 0x59, /* 'Y' */
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UNICODE_CAPITAL_Z = 0x5a, /* 'Z' */
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UNICODE_LEFT_SQUARE_BRACKET = 0x5b, /* '[' */
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UNICODE_REVERSE_SOLIDUS = 0x5c, /* '\' */
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UNICODE_RIGHT_SQUARE_BRACKET = 0x5d, /* ']' */
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UNICODE_CIRCUMFLEX_ACCENT = 0x5e, /* '^' */
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UNICODE_LOW_LINE = 0x5f, /* '_' */
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UNICODE_GRAVE_ACCENT = 0x60, /* '`' */
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UNICODE_SMALL_A = 0x61, /* 'a' */
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UNICODE_SMALL_B = 0x62, /* 'b' */
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UNICODE_SMALL_C = 0x63, /* 'c' */
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UNICODE_SMALL_D = 0x64, /* 'd' */
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UNICODE_SMALL_E = 0x65, /* 'e' */
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UNICODE_SMALL_F = 0x66, /* 'f' */
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UNICODE_SMALL_G = 0x67, /* 'g' */
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UNICODE_SMALL_H = 0x68, /* 'h' */
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UNICODE_SMALL_I = 0x69, /* 'i' */
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UNICODE_SMALL_J = 0x6a, /* 'j' */
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UNICODE_SMALL_K = 0x6b, /* 'k' */
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UNICODE_SMALL_L = 0x6c, /* 'l' */
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UNICODE_SMALL_M = 0x6d, /* 'm' */
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UNICODE_SMALL_N = 0x6e, /* 'n' */
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UNICODE_SMALL_O = 0x6f, /* 'o' */
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UNICODE_SMALL_P = 0x70, /* 'p' */
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UNICODE_SMALL_Q = 0x71, /* 'q' */
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UNICODE_SMALL_R = 0x72, /* 'r' */
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UNICODE_SMALL_S = 0x73, /* 's' */
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UNICODE_SMALL_T = 0x74, /* 't' */
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UNICODE_SMALL_U = 0x75, /* 'u' */
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UNICODE_SMALL_V = 0x76, /* 'v' */
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UNICODE_SMALL_W = 0x77, /* 'w' */
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UNICODE_SMALL_X = 0x78, /* 'x' */
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UNICODE_SMALL_Y = 0x79, /* 'y' */
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UNICODE_SMALL_Z = 0x7a, /* 'z' */
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UNICODE_LEFT_CURLY_BRACKET = 0x7b, /* '{' */
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UNICODE_VERTICAL_LINE = 0x7c, /* '|' */
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UNICODE_RIGHT_CURLY_BRACKET = 0x7d, /* '}' */
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UNICODE_TILDE = 0x7e, /* '~' */
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UNICODE_INVERTED_EXCLAMATION_MARK = 0xa1, /* '¡' */
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UNICODE_COPYRIGHT_SIGN = 0xa9, /* '©' */
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UNICODE_REGISTERED_SIGN = 0xae, /* '®' */
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UNICODE_DEGREES = 0xb0, /* '°' */
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UNICODE_ACUTE_ACCENT = 0xb4, /* '´' */
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UNICODE_INVERTED_QUESTION_MARK = 0xbf, /* '¿' */
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UNICODE_CAPITAL_A_GRAVE = 0xc0, /* 'À' */
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UNICODE_CAPITAL_A_ACUTE = 0xc1, /* 'Á' */
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UNICODE_CAPITAL_A_CIRCUMFLEX = 0xc2, /* 'Â' */
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UNICODE_CAPITAL_A_DIARESIS = 0xc4, /* 'Ä' */
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UNICODE_CAPITAL_AE = 0xc6, /* 'Æ' */
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UNICODE_CAPITAL_C_CEDILLA = 0xc7, /* 'Ç' */
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UNICODE_CAPITAL_E_GRAVE = 0xc8, /* 'È' */
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UNICODE_CAPITAL_E_ACUTE = 0xc9, /* 'É' */
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UNICODE_CAPITAL_E_CIRCUMFLEX = 0xca, /* 'Ê' */
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UNICODE_CAPITAL_E_DIARESIS = 0xcb, /* 'Ë' */
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UNICODE_CAPITAL_I_GRAVE = 0xcc, /* 'Ì' */
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UNICODE_CAPITAL_I_ACUTE = 0xcd, /* 'Í' */
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UNICODE_CAPITAL_I_CIRCUMFLEX = 0xce, /* 'Î' */
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UNICODE_CAPITAL_I_DIARESIS = 0xcf, /* 'Ï' */
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UNICODE_CAPITAL_N_TILDE = 0xd1, /* 'Ñ' */
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UNICODE_CAPITAL_O_GRAVE = 0xd2, /* 'Ò' */
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UNICODE_CAPITAL_O_ACUTE = 0xd3, /* 'Ó' */
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UNICODE_CAPITAL_O_CIRCUMFLEX = 0xd4, /* 'Ô' */
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UNICODE_CAPITAL_O_DIARESIS = 0xd6, /* 'Ö' */
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UNICODE_MULTIPLICATION_SIGN = 0xd7, /* '×' */
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UNICODE_CAPITAL_U_GRAVE = 0xd9, /* 'Ù' */
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UNICODE_CAPITAL_U_ACUTE = 0xda, /* 'Ú' */
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UNICODE_CAPITAL_U_CIRCUMFLEX = 0xdb, /* 'Û' */
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UNICODE_CAPITAL_U_DIARESIS = 0xdc, /* 'Ü' */
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UNICODE_SMALL_SHARP_S = 0xdf, /* 'ß' */
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UNICODE_SMALL_A_GRAVE = 0xe0, /* 'à' */
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UNICODE_SMALL_A_ACUTE = 0xe1, /* 'á' */
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UNICODE_SMALL_A_CIRCUMFLEX = 0xe2, /* 'â' */
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UNICODE_SMALL_A_DIARESIS = 0xe4, /* 'ä' */
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UNICODE_SMALL_AE = 0xe6, /* 'æ' */
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UNICODE_SMALL_C_CEDILLA = 0xe7, /* 'ç' */
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UNICODE_SMALL_E_GRAVE = 0xe8, /* 'è' */
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UNICODE_SMALL_E_ACUTE = 0xe9, /* 'é' */
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UNICODE_SMALL_E_CIRCUMFLEX = 0xea, /* 'ê' */
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UNICODE_SMALL_E_DIARESIS = 0xeb, /* 'ë' */
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UNICODE_SMALL_I_GRAVE = 0xec, /* 'ì' */
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UNICODE_SMALL_I_ACUTE = 0xed, /* 'í' */
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UNICODE_SMALL_I_CIRCUMFLEX = 0xee, /* 'î' */
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UNICODE_SMALL_I_DIARESIS = 0xef, /* 'ï' */
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UNICODE_SMALL_N_TILDE = 0xf1, /* 'ñ' */
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UNICODE_SMALL_O_GRAVE = 0xf2, /* 'ò' */
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UNICODE_SMALL_O_ACUTE = 0xf3, /* 'ó' */
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UNICODE_SMALL_O_CIRCUMFLEX = 0xf4, /* 'ô' */
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UNICODE_SMALL_O_DIARESIS = 0xf6, /* 'ö' */
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UNICODE_SMALL_U_GRAVE = 0xf9, /* 'ù' */
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UNICODE_SMALL_U_ACUTE = 0xfa, /* 'ú' */
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UNICODE_SMALL_U_CIRCUMFLEX = 0xfb, /* 'û' */
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UNICODE_SMALL_U_DIARESIS = 0xfc, /* 'ü' */
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UNICODE_NUMERO_SIGN = 0x2116, /* '№' */
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UNICODE_TRADE_MARK = 0x2122, /* '™' */
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UNICODE_INCREMENT = 0x2206, /* '∆' */
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UNICODE_BLACK_UP_POINTING_TRIANGLE = 0x25b2, /* '▲' */
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UNICODE_BLACK_RIGHT_POINTING_POINTER = 0x25ba, /* '►' */
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UNICODE_BLACK_DOWN_POINTING_POINTER = 0x25bc, /* '▼' */
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UNICODE_BLACK_LEFT_POINTING_POINTER = 0x25c4, /* '◄' */
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UNICODE_WHITE_CIRCLE = 0x25cb, /* '○' */
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UNICODE_BLACK_STAR = 0x2605, /* '★' */
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UNICODE_BLACK_HEART_SUIT = 0x2665, /* '♥' */
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UNICODE_CROSS_MARK = 0x274c, /* '❌' */
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UNICODE_REPLACEMENT_CHARACTER = 0xfffd, /* '<27>' */
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UNICODE_SHIELD = 0x1f6e1, /* '🛡' */
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};
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#endif
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