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Unicode variant string matching
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{"version":3,"file":"regex.js","sources":["../../lib/regex.mjs"],"sourcesContent":["\n/**\n * Convert array of strings to a regular expression\n *\tex ['ab','a'] => (?:ab|a)\n * \tex ['a','b'] => [ab]\n * @param {string[]} chars\n * @return {string}\n */\nexport const arrayToPattern = (chars) =>{\n\n\tchars = chars.filter( Boolean );\n\n\tif( chars.length < 2 ){\n\t\treturn chars[0] || '';\n\t}\n\n\treturn (maxValueLength(chars) == 1) ? '['+chars.join('')+']' : '(?:'+chars.join('|')+')';\n};\n\n/**\n * @param {string[]} array\n * @return {string}\n */\nexport const sequencePattern = (array)=>{\n\n\tif( !hasDuplicates(array) ){\n\t\treturn array.join('');\n\t}\n\n\tlet pattern = '';\n\tlet prev_char_count = 0;\n\n\tconst prev_pattern = ()=>{\n\t\tif( prev_char_count > 1 ){\n\t\t\tpattern += '{'+prev_char_count+'}';\n\t\t}\n\t}\n\n\tarray.forEach((char,i)=>{\n\n\t\tif( char === array[i-1] ){\n\t\t\tprev_char_count++;\n\t\t\treturn;\n\t\t}\n\n\t\tprev_pattern();\n\n\t\tpattern += char;\n\t\tprev_char_count = 1;\n\t});\n\n\tprev_pattern();\n\n\treturn pattern;\n\n}\n\n\n\n/**\n * Convert array of strings to a regular expression\n *\tex ['ab','a'] => (?:ab|a)\n * \tex ['a','b'] => [ab]\n * @param {Set} chars\n * @return {string}\n */\nexport const setToPattern = (chars)=>{\n\tlet array = toArray(chars);\n\treturn arrayToPattern(array);\n}\n\n\n\n/**\n *\n * https://stackoverflow.com/questions/7376598/in-javascript-how-do-i-check-if-an-array-has-duplicate-values\n * @param {any[]} array\n */\nexport const hasDuplicates = (array) => {\n    return (new Set(array)).size !== array.length;\n}\n\n\n/**\n * https://stackoverflow.com/questions/63006601/why-does-u-throw-an-invalid-escape-error\n * @param {string} str\n * @return {string}\n */\nexport const escape_regex = (str) => {\n\treturn (str + '').replace(/([\\$\\(\\)\\*\\+\\.\\?\\[\\]\\^\\{\\|\\}\\\\])/gu, '\\\\$1');\n};\n\n/**\n * Return the max length of array values\n * @param {string[]} array\n *\n */\nexport const maxValueLength = (array) => {\n\treturn array.reduce( (longest, value) => Math.max(longest,unicodeLength(value)),0);\n}\n\n\n/**\n * @param {string} str\n */\nexport const unicodeLength = (str) => {\n\treturn toArray(str).length;\n}\n\n/**\n * @param {any} p\n * @return {any[]}\n */\nexport const toArray = (p) => Array.from(p);\n"],"names":["arrayToPattern","chars","filter","Boolean","length","maxValueLength","join","sequencePattern","array","hasDuplicates","pattern","prev_char_count","prev_pattern","forEach","char","i","setToPattern","toArray","Set","size","escape_regex","str","replace","reduce","longest","value","Math","max","unicodeLength","p","Array","from"],"mappings":";AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACaA,MAAAA,cAAc,GAAIC,KAAD,IAAU;AAEvCA,EAAAA,KAAK,GAAGA,KAAK,CAACC,MAAN,CAAcC,OAAd,CAAR,CAAA;;AAEA,EAAA,IAAIF,KAAK,CAACG,MAAN,GAAe,CAAnB,EAAsB;AACrB,IAAA,OAAOH,KAAK,CAAC,CAAD,CAAL,IAAY,EAAnB,CAAA;AACA,GAAA;;EAED,OAAQI,cAAc,CAACJ,KAAD,CAAd,IAAyB,CAA1B,GAA+B,GAAA,GAAIA,KAAK,CAACK,IAAN,CAAW,EAAX,CAAJ,GAAmB,GAAlD,GAAwD,KAAML,GAAAA,KAAK,CAACK,IAAN,CAAW,GAAX,CAAN,GAAsB,GAArF,CAAA;AACA,EATM;AAWP;AACA;AACA;AACA;;AACaC,MAAAA,eAAe,GAAIC,KAAD,IAAS;AAEvC,EAAA,IAAI,CAACC,aAAa,CAACD,KAAD,CAAlB,EAA2B;AAC1B,IAAA,OAAOA,KAAK,CAACF,IAAN,CAAW,EAAX,CAAP,CAAA;AACA,GAAA;;EAED,IAAII,OAAO,GAAG,EAAd,CAAA;EACA,IAAIC,eAAe,GAAG,CAAtB,CAAA;;EAEA,MAAMC,YAAY,GAAG,MAAI;IACxB,IAAID,eAAe,GAAG,CAAtB,EAAyB;AACxBD,MAAAA,OAAO,IAAI,GAAA,GAAIC,eAAJ,GAAoB,GAA/B,CAAA;AACA,KAAA;GAHF,CAAA;;AAMAH,EAAAA,KAAK,CAACK,OAAN,CAAc,CAACC,IAAD,EAAMC,CAAN,KAAU;IAEvB,IAAID,IAAI,KAAKN,KAAK,CAACO,CAAC,GAAC,CAAH,CAAlB,EAAyB;MACxBJ,eAAe,EAAA,CAAA;AACf,MAAA,OAAA;AACA,KAAA;;IAEDC,YAAY,EAAA,CAAA;AAEZF,IAAAA,OAAO,IAAII,IAAX,CAAA;AACAH,IAAAA,eAAe,GAAG,CAAlB,CAAA;GAVD,CAAA,CAAA;EAaAC,YAAY,EAAA,CAAA;AAEZ,EAAA,OAAOF,OAAP,CAAA;AAEA,EAhCM;AAoCP;AACA;AACA;AACA;AACA;AACA;AACA;;AACaM,MAAAA,YAAY,GAAIf,KAAD,IAAS;AACpC,EAAA,IAAIO,KAAK,GAAGS,OAAO,CAAChB,KAAD,CAAnB,CAAA;EACA,OAAOD,cAAc,CAACQ,KAAD,CAArB,CAAA;AACA,EAHM;AAOP;AACA;AACA;AACA;AACA;;AACaC,MAAAA,aAAa,GAAID,KAAD,IAAW;EACpC,OAAQ,IAAIU,GAAJ,CAAQV,KAAR,CAAD,CAAiBW,IAAjB,KAA0BX,KAAK,CAACJ,MAAvC,CAAA;AACH,EAFM;AAKP;AACA;AACA;AACA;AACA;;AACagB,MAAAA,YAAY,GAAIC,GAAD,IAAS;EACpC,OAAO,CAACA,GAAG,GAAG,EAAP,EAAWC,OAAX,CAAmB,oCAAnB,EAAyD,MAAzD,CAAP,CAAA;AACA,EAFM;AAIP;AACA;AACA;AACA;AACA;;AACajB,MAAAA,cAAc,GAAIG,KAAD,IAAW;EACxC,OAAOA,KAAK,CAACe,MAAN,CAAc,CAACC,OAAD,EAAUC,KAAV,KAAoBC,IAAI,CAACC,GAAL,CAASH,OAAT,EAAiBI,aAAa,CAACH,KAAD,CAA9B,CAAlC,EAAyE,CAAzE,CAAP,CAAA;AACA,EAFM;AAKP;AACA;AACA;;AACaG,MAAAA,aAAa,GAAIP,GAAD,IAAS;AACrC,EAAA,OAAOJ,OAAO,CAACI,GAAD,CAAP,CAAajB,MAApB,CAAA;AACA,EAFM;AAIP;AACA;AACA;AACA;;AACO,MAAMa,OAAO,GAAIY,CAAD,IAAOC,KAAK,CAACC,IAAN,CAAWF,CAAX;;;;"}