4e566cc671
- Replace `std::map` with `std::unordered_map` - clang-format - Delete `CP437`'s default copy constructor instead of hiding it - Move the internal declarations to an anonymous namespace
100 lines
3.8 KiB
C++
100 lines
3.8 KiB
C++
/*
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* Copyright (c) 2013 yvt
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* WTFPL
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*/
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#include <iterator>
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#include <unordered_map>
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#include "CP437.h"
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#include <Core/Debug.h>
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static const uint16_t cp437map[256] = {
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/*
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0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a, 0x000b,
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0x000c, 0x000d, 0x000e, 0x000f, 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
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0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f,*/
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// graphic symbols
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0x0000, 0x263a, 0x263b, 0x2665, 0x2666, 0x2663, 0x2660, 0x2022, 0x25d8, 0x25cb, 0x000a, 0x2642,
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0x2640, 0x000d, 0x266b, 0x263c, 0x25ba, 0x25c4, 0x2195, 0x203c, 0x00b6, 0x00a7, 0x25ac, 0x21a8,
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0x2191, 0x2193, 0x2192, 0x2190, 0x221f, 0x2194, 0x25b2, 0x25bc,
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0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b,
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0x002c, 0x002d, 0x002e, 0x002f, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
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0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f, 0x0040, 0x0041, 0x0042, 0x0043,
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0x0044, 0x0045, 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f,
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0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, 0x005a, 0x005b,
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0x005c, 0x005d, 0x005e, 0x005f, 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
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0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f, 0x0070, 0x0071, 0x0072, 0x0073,
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0x0074, 0x0075, 0x0076, 0x0077, 0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x007f,
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0x00c7, 0x00fc, 0x00e9, 0x00e2, 0x00e4, 0x00e0, 0x00e5, 0x00e7, 0x00ea, 0x00eb, 0x00e8, 0x00ef,
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0x00ee, 0x00ec, 0x00c4, 0x00c5, 0x00c9, 0x00e6, 0x00c6, 0x00f4, 0x00f6, 0x00f2, 0x00fb, 0x00f9,
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0x00ff, 0x00d6, 0x00dc, 0x00a2, 0x00a3, 0x00a5, 0x20a7, 0x0192, 0x00e1, 0x00ed, 0x00f3, 0x00fa,
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0x00f1, 0x00d1, 0x00aa, 0x00ba, 0x00bf, 0x2310, 0x00ac, 0x00bd, 0x00bc, 0x00a1, 0x00ab, 0x00bb,
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0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557,
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0x255d, 0x255c, 0x255b, 0x2510, 0x2514, 0x2534, 0x252c, 0x251c, 0x2500, 0x253c, 0x255e, 0x255f,
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0x255a, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256c, 0x2567, 0x2568, 0x2564, 0x2565, 0x2559,
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0x2558, 0x2552, 0x2553, 0x256b, 0x256a, 0x2518, 0x250c, 0x2588, 0x2584, 0x258c, 0x2590, 0x2580,
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0x03b1, 0x00df, 0x0393, 0x03c0, 0x03a3, 0x03c3, 0x00b5, 0x03c4, 0x03a6, 0x0398, 0x03a9, 0x03b4,
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0x221e, 0x03c6, 0x03b5, 0x2229, 0x2261, 0x00b1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00f7, 0x2248,
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0x00b0, 0x2219, 0x00b7, 0x221a, 0x207f, 0x00b2, 0x25a0, 0x00a0,
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};
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namespace spades {
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namespace {
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struct ReverseMap {
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std::unordered_map<uint32_t, char> mp;
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ReverseMap() {
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for (int i = 0; i < 256; i++) {
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mp[cp437map[i]] = static_cast<char>(i);
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}
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}
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};
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ReverseMap const g_reverse;
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} // namespace
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char CP437::EncodeChar(uint32_t unicode, char fb) {
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auto it = g_reverse.mp.find(unicode);
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if (it == g_reverse.mp.end()) {
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return fb;
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} else {
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SPAssert(cp437map[static_cast<unsigned char>(it->second)] == unicode);
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return it->second;
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}
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}
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std::uint32_t CP437::DecodeChar(char c) {
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auto r = cp437map[static_cast<unsigned char>(c)];
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SPAssert(g_reverse.mp.find(r)->second == c);
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return r;
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}
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std::string CP437::Encode(const std::string &str, char fallback) {
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size_t idx = 0;
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std::string outp;
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outp.reserve(str.size());
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while (idx < str.size()) {
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size_t outNumBytes;
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auto cp = GetCodePointFromUTF8String(str, idx, &outNumBytes);
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idx += outNumBytes;
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outp.push_back(EncodeChar(cp, fallback));
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}
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return outp;
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}
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std::string CP437::Decode(const std::string &str) {
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std::string outp;
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outp.reserve(str.size() * 3);
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auto it = std::back_inserter(outp);
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for (size_t i = 0; i < str.size(); i++) {
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auto cp = DecodeChar(str[i]);
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CodePointToUTF8(it, cp);
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}
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return outp;
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}
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} // namespace spades
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