javascript - Transform patterns of code points in a binary -


i need code points different categories , transform them binary pattern. i'm using unicodeset site getting code points using set [:age=5.0:]&[[:gc=l:][:gc=nl:][:gc=mn:][:gc=mc:][:gc=nd:][:gc=pc:]\$_].

i've written little thing transforming result returned unicodeset site binary pattern. i've tested simple things [$a-z] , results on expect:

01 24 // $ 00 61 00 // 7a 00 // z

it worked fine non-bmp characters. however, using set mentioned first, [:age=5.0:]&[[:gc=l:][:gc=nl:][:gc=mn:][:gc=mc:][:gc=nd:][:gc=pc:]\$_], code points after u+2fa1d don't appear on copy-paste site. however, if check escape checkbox, appear, results in different forms.

is there way solve that? or maybe there appropriate browser ? final part of result shown in browser 𪘀-], is, u+2fa1d , -].

'use strict';  /*  * generates binary pattern matching code point in  * list generated by:  *  * https://unicode.org/cldr/utility/list-unicodeset.jsp  */  const fs = require('fs'); const path = require('path');  const input = fs.readfilesync(   path.join(process.argv[2], process.argv[3]), 'utf8');  const result = new buffer(497028);  let resultoffset = 0;  let cpx   , cpy;  let chxhigh   , chxlow   , chyhigh   , chylow;  let surx   , sury;  const len = (input.length) - 1;  (let offset = 1; offset < len;) {   // gets left character.   cpx = input.codepointat(offset);    // skips escape.   if (cpx === 0x5c)     cpx = input.codepointat(++offset);    // handles x surrogates.   chxhigh = input.charcodeat(offset);    if (usingsurrogates(chxhigh))   {     chxlow = input.charcodeat(offset + 1);     surx = 2;   }   else surx = 1;    offset += surx;    // y...    cpy = input.codepointat(offset);    // handles x-y interval.   if (cpy === 0x2d)   {     ++offset;      // skips escape.     if (cpy === 0x5c)       cpy = input.codepointat(++offset);      // handles y surrogates.     cpy = input.codepointat(offset);     chyhigh = input.charcodeat(offset);      if (usingsurrogates(chyhigh))     {       chylow = input.charcodeat(offset + 1);       sury = 2;     }     else sury = 1;      offset += sury;      // copy interval result.     result.writeuint8(0, resultoffset);     ++resultoffset;      // copy x...     result.writeuint16le(chxhigh, resultoffset);      if (surx === 2)     {       result.writeuint16le(chxlow, resultoffset + 2)       resultoffset += 4;     }     else resultoffset += 2;      // copy y...     result.writeuint16le(chyhigh, resultoffset);      if (sury === 2)     {       result.writeuint16le(chylow, resultoffset + 2);       resultoffset += 4;     }     else resultoffset += 2;   }   else   {     result.writeuint8(1, resultoffset);     ++resultoffset;      // copy x...     result.writeuint16le(chxhigh, resultoffset);      if (surx === 2)     {       result.writeuint16le(chxlow, resultoffset + 2)       resultoffset += 4;     }     else resultoffset += 2;   } }  function usingsurrogates(ch) {   return (ch >= 0xd800) && (ch <= 0xdbff); }  fs.writefilesync(path.join(__dirname, 'output'), result.slice(0, resultoffset));


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