git.r.bdr.sh - rbdr/forum/blob - app/utils/glyph_hash.js

   1 const internals = {
   2   kSplitterRegex: /.{1,8}/g,
   3   kGlyphs: [
   4     "☽",
   5     "☆",
   6     "♢",
   7     "♡",
   8     "╱",
   9     "╲",
  10     "╳",
  11     "〰",
  12     "▷",
  13     "⏊",
  14     "〒",
  15     "▢",
  16     "◯",
  17     "⏃",
  18     "⏀",
  19     "⏆"
  20   ]
  21 };
  22
  23 // Return a glyph with color based on a 4 byte fragment of a UUIDv4
  24 const getGlyphHashFragment = function (uuidFragment) {
  25
  26   const glyphIndex = parseInt(uuidFragment.substring(0,2), 16) % 16;
  27   return {
  28     glyph: internals.kGlyphs[glyphIndex],
  29     color: `#${uuidFragment.substring(2,8)}`
  30   }
  31 };
  32
  33 // Return an array of glyphs based on a UUIDv4
  34 export const getGlyphHash = function (uuid) {
  35
  36   const hashFragments = uuid.match(internals.kSplitterRegex);
  37   return hashFragments.map(getGlyphHashFragment);
  38 };