pimoroni-pico/common/unicode_sorta.hpp

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#pragma once
#include <cstdint>
/*
This file exists to allow space-efficient rendering of accented characters.
It permits rudimentary support for unicode characters by providing a lookup
table to map anything prefixed with 0xc3 to its non-accented equivilent.
*/
namespace unicode_sorta {
const char PAGE_194_START = 194;
const char PAGE_195_START = 195;
// Codepage is probably completely the wrong terminology here
// but character pairs come in the form 0xc2 0x00 and 0xc3 0x00.
enum codepage_t : uint8_t {
PAGE_194,
PAGE_195
};
const uint8_t UNICODE_PREFIX = 0xc3;
enum accents : uint8_t {
ACCENT_GRAVE,
ACCENT_ACUTE,
ACCENT_CIRCUMFLEX,
ACCENT_TILDE,
ACCENT_DIAERESIS,
ACCENT_RING_ABOVE,
ACCENT_STROKE,
ACCENT_CEDILLA,
ACCENT_NONE,
};
static const accents char_accent[] = {
ACCENT_GRAVE,
ACCENT_ACUTE,
ACCENT_CIRCUMFLEX,
ACCENT_TILDE,
ACCENT_DIAERESIS,
ACCENT_RING_ABOVE,
ACCENT_NONE,
ACCENT_CEDILLA,
ACCENT_GRAVE,
ACCENT_ACUTE,
ACCENT_CIRCUMFLEX,
ACCENT_DIAERESIS,
ACCENT_GRAVE,
ACCENT_ACUTE,
ACCENT_CIRCUMFLEX,
ACCENT_DIAERESIS,
ACCENT_NONE,
ACCENT_TILDE,
ACCENT_GRAVE,
ACCENT_ACUTE,
ACCENT_CIRCUMFLEX,
ACCENT_TILDE,
ACCENT_DIAERESIS,
ACCENT_NONE,
ACCENT_STROKE,
ACCENT_GRAVE,
ACCENT_ACUTE,
ACCENT_CIRCUMFLEX,
ACCENT_DIAERESIS,
ACCENT_ACUTE,
ACCENT_NONE,
ACCENT_NONE,
ACCENT_GRAVE,
ACCENT_ACUTE,
ACCENT_CIRCUMFLEX,
ACCENT_TILDE,
ACCENT_DIAERESIS,
ACCENT_RING_ABOVE,
ACCENT_NONE,
ACCENT_CEDILLA,
ACCENT_GRAVE,
ACCENT_ACUTE,
ACCENT_CIRCUMFLEX,
ACCENT_DIAERESIS,
ACCENT_GRAVE,
ACCENT_ACUTE,
ACCENT_CIRCUMFLEX,
ACCENT_DIAERESIS,
ACCENT_NONE,
ACCENT_TILDE,
ACCENT_GRAVE,
ACCENT_ACUTE,
ACCENT_CIRCUMFLEX,
ACCENT_TILDE,
ACCENT_DIAERESIS,
ACCENT_NONE,
ACCENT_STROKE,
ACCENT_GRAVE,
ACCENT_ACUTE,
ACCENT_CIRCUMFLEX,
ACCENT_DIAERESIS,
ACCENT_ACUTE,
ACCENT_NONE,
ACCENT_DIAERESIS
};
// Codepage 194. Starts at 0x80 but the first 32 are non-printable
// Since we're already implementing LUTs for various accented characters,
// it makes sense for us poor brits to grab a usable £, too!
static const char char_base_194[] = {
' ', // - c2 a0 - NO-BREAK SPACE
'i', // ¡ - c2 a1 - INVERTED EXCLAMATION MARK
' ', // ¢ - c2 a2 - CENT SIGN
'\x85', // £ - c2 a3 - POUND SIGN
' ', // ¤ - c2 a4 - CURRENCY SIGN
'\x86', // ¥ - c2 a5 - YEN SIGN
' ', // ¦ - c2 a6 - BROKEN BAR
'S', // § - c2 a7 - SECTION SIGN
' ', // ¨ - c2 a8 - DIAERESIS
'\x87', // © - c2 a9 - COPYRIGHT SIGN
'a', // ª - c2 aa - FEMININE ORDINAL INDICATOR
'<', // « - c2 ab - LEFT-POINTING DOUBLE ANGLE QUOTATION MARK
' ', // ¬ - c2 ac - NOT SIGN
' ', // ­ - c2 ad - SOFT HYPHEN
'R', // ® - c2 ae - REGISTERED SIGN
' ', // ¯ - c2 af - MACRON
'\x88', // ° - c2 b0 - DEGREE SIGN
' ', // ± - c2 b1 - PLUS-MINUS SIGN
'2', // ² - c2 b2 - SUPERSCRIPT TWO
'3', // ³ - c2 b3 - SUPERSCRIPT THREE
' ', // ´ - c2 b4 - ACUTE ACCENT
' ', // µ - c2 b5 - MICRO SIGN
' ', // ¶ - c2 b6 - PILCROW SIGN
' ', // · - c2 b7 - MIDDLE DOT
' ', // ¸ - c2 b8 - CEDILLA
' ', // ¹ - c2 b9 - SUPERSCRIPT ONE
' ', // º - c2 ba - MASCULINE ORDINAL INDICATOR
' ', // » - c2 bb - RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK
' ', // ¼ - c2 bc - VULGAR FRACTION ONE QUARTER
' ', // ½ - c2 bd - VULGAR FRACTION ONE HALF
' ', // ¾ - c2 be - VULGAR FRACTION THREE QUARTERS
' ', // ¿ - c2 bf - INVERTED QUESTION MARK
};
// Codepage 195. Starts at 0x80
static const char char_base_195[] = {
'A', // À - c3 80 - A + GRAVE
'A', // Á - c3 81 - A + ACUTE
'A', // Â - c3 82 - A + CIRCUMFLEX
'A', // Ã - c3 83 - A + TILDE
'A', // Ä - c3 84 - A + DIAERESIS
'A', // Å - c3 85 - A + RING ABOVE
'\x80', // Æ - c3 86 - AE
'C', // Ç - c3 87 - C + CEDILLA
'E', // È - c3 88 - E + GRAVE
'E', // É - c3 89 - E + ACUTE
'E', // Ê - c3 8a - E + CIRCUMFLEX
'E', // Ë - c3 8b - E + DIAERESIS
'I', // Ì - c3 8c - I + GRAVE
'I', // Í - c3 8d - I + ACUTE
'I', // Î - c3 8e - I + CIRCUMFLEX
'I', // Ï - c3 8f - I + DIAERESIS
'D', // Ð - c3 90 - ETH
'N', // Ñ - c3 91 - N + TILDE
'O', // Ò - c3 92 - O + GRAVE
'O', // Ó - c3 93 - O + ACUTE
'O', // Ô - c3 94 - O + CIRCUMFLEX
'O', // Õ - c3 95 - O + TILDE
'O', // Ö - c3 96 - O + DIAERESIS
'x', // × - c3 97 - MULTIPLICATION SIGN
'O', // Ø - c3 98 - O + STROKE
'U', // Ù - c3 99 - U + GRAVE
'U', // Ú - c3 9a - U + ACUTE
'U', // Û - c3 9b - U + CIRCUMFLEX
'U', // Ü - c3 9c - U + DIAERESIS
'Y', // Ý - c3 9d - Y + ACUTE
'\x81', // Þ - c3 9e - THORN
'\x82', // ß - c3 9f - SHARP S
'a', // à - c3 a0 - A + GRAVE
'a', // á - c3 a1 - A + ACUTE
'a', // â - c3 a2 - A + CIRCUMFLEX
'a', // ã - c3 a3 - A + TILDE
'a', // ä - c3 a4 - A + DIAERESIS
'a', // å - c3 a5 - A + RING ABOVE
'\x83', // æ - c3 a6 - AE
'c', // ç - c3 a7 - C + CEDILLA
'e', // è - c3 a8 - E + GRAVE
'e', // é - c3 a9 - E + ACUTE
'e', // ê - c3 aa - E + CIRCUMFLEX
'e', // ë - c3 ab - E + DIAERESIS
'i', // ì - c3 ac - I + GRAVE
'i', // í - c3 ad - I + ACUTE
'i', // î - c3 ae - I + CIRCUMFLEX
'i', // ï - c3 af - I + DIAERESIS
'o', // ð - c3 b0 - ETH
'n', // ñ - c3 b1 - N + TILDE
'o', // ò - c3 b2 - O + GRAVE
'o', // ó - c3 b3 - O + ACUTE
'o', // ô - c3 b4 - O + CIRCUMFLEX
'o', // õ - c3 b5 - O + TILDE
'o', // ö - c3 b6 - O + DIAERESIS
'/', // ÷ - c3 b7 - DIVISION SIGN
'o', // ø - c3 b8 - O + STROKE
'u', // ù - c3 b9 - U + GRAVE
'u', // ú - c3 ba - U + ACUTE
'u', // û - c3 bb - U + CIRCUMFLEX
'u', // ü - c3 bc - U + DIAERESIS
'y', // ý - c3 bd - Y + ACUTE
'\x84', // þ - c3 be - THORN
'y', // ÿ - c3 bf - Y + DIAERESIS
};
}