Fastest & Smallest Vietnamese JavaScript Input Editor

function vietUni(a){if(document.all||document.getElementById){this.method=(a==undefined||a==null)?4:a;return this}alert("Xin loi, trinh duyet web cua ban khong cho phep dung VietTyping.");return false}vietUni.prototype.setMethod=function(a){this.method=a;if(this.typer)this.typer.keyMode=this.initKeys()};vietUni.prototype.initKeys=function(){switch(this.method){case 1:if(!this.telexKeys)this.telexKeys=new vietKeysTelex();return this.telexKeys;case 2:if(!this.vniKeys)this.vniKeys=new vietKeysVni();return this.vniKeys;case 3:if(!this.viqrKeys)this.viqrKeys=new vietKeysViqr();return this.viqrKeys;case 4:if(!this.allKeys)this.allKeys=new vietKeysAll();return this.allKeys;default:if(!this.vkOff)this.vkOff=new vietKeysOff();return this.vkOff}};vietUni.prototype.initTyper=function(b){if(!b)return;if(!this.typer){this.typer=new vietTyper();this.typer.keyMode=this.initKeys()}var c=this;if(b.attachEvent){b.attachEvent("onkeypress",function(a){return vietUni.vietTyping(a,c,b)})}else if(b.addEventListener){b.addEventListener("keypress",function(a){return vietUni.vietTyping(a,c,b)},true)}else if(b.onkeypress){var d=b.onkeypress;if(typeof d!=="function"){b.onkeypress=function(a){return vietUni.vietTyping(a,c,b)}}else{b.onkeypress=function(a){return(!d(a))?false:vietUni.vietTyping(a,c,b)}}}};vietUni.vietTyping=function(a,b,d){if(!b||b.typer.keyMode.off)return true;if(!a)a=event;var c=document.all?a.keyCode:(a.which||a.charCode);if(c<49&&c!=16&&c!=20)return true;var e,s=b.getCurrentWord(d);if(s==null||(e=s.length)<1||s.match(/\s+$/))return true;b.typer.value=s;if(c>32&&b.typer.typing(c)){if(((s=b.typer.value).length==e+1)&&c==s.charCodeAt(e)){b.typer.value=s.substr(0,e);e=0}b.replaceWord(d,b.typer.value);if(e>0){if(typeof a.cancelBubble!=="undefined"){a.cancelBubble=true}if(a.stopPropagation){a.preventDefault();a.stopPropagation()}return false}}return(!a.cancelBubble)};vietUni.prototype.getCurrentWord=function(a){if(document.selection&&!a.createRange){var b=(!a.selection)?a.document.selection.createRange():a.selection.createRange();if(b.text)return null;var c;try{c=b.duplicate();c.moveStart("word",-1)}catch(e){var d=-10;do{c=b.duplicate();c.moveStart("character",d++)}while(!c.text&&d<0)}a.curWord=c.duplicate();return c.text}else if(a.setSelectionRange){var f=a.selectionStart,i=a.selectionEnd;if(f!=i)return null;f=Math.max(0,i-10);a.pos1=f;a.pos2=i;return a.value.substr(f,i-f)}else if(window.getSelection){var g=a.defaultView.getSelection();var h=g.getRangeAt(g.rangeCount-1).cloneRange();if(h.toString())return null;var i=h.startOffset,nod=h.endContainer;h.setEnd(nod,i);h.setStart(nod,Math.max(0,i-10));a.rng1=h;a.nod1=nod;a.pos1=h.startOffset;a.pos2=i;var j=h.toString();h.setStart(nod,i);return j}else if(typeof a.value!=="undefined"){return a.value}return null};vietUni.prototype.replaceWord=function(a,b){if(document.selection&&!a.createRange&&a.curWord){a.curWord.text=b;a.curWord.collapse(false)}else if(a.setSelectionRange){var c=a.pos1,p2=a.pos2,txt=a.value;a.value=txt.substr(0,c)+b+txt.substr(p2);a.setSelectionRange(c+b.length,c+b.length)}else if(window.getSelection&&a.nod1&&a.nod1.insertData){a.rng1.setStart(a.nod1,a.pos1);a.nod1.insertData(a.pos1,b);a.nod1.deleteData(a.pos1+b.length,a.pos2-a.pos1);a.rng1.setEnd(a.nod1,a.pos2);a.rng1.setStart(a.nod1,a.pos2)}else if(typeof a.value!=="undefined"){a.value=b}};function vietTyper(){this.value="";this.charMap=new vietUnicodeMap();this.ctrlChar='-';this.changed=0;return this}vietTyper.prototype.typing=function(a){this.changed=0;this.ctrlChar=String.fromCharCode(a);this.keyMode.getAction(this);this.correct();return this.changed};vietTyper.prototype.compose=function(a){if(!this.value)return;var b=this.findCharToChange(a);if(!b||!b[0])return;var c;if(b[0]=='\\'){c=[1,this.ctrlChar,1]}else if(a>6){c=this.charMap.getAEOWD(b[0],a,b[3])}else{c=this.charMap.getDau(b[0],a)}if(!(this.changed=c[0]))return;this.value=this.value.substr(0,b[1])+c[1]+this.value.substr(b[1]+b[2]);if(!c[2])this.value+=this.ctrlChar};vietTyper.prototype.correct=function(){var a=this.value;if('nNcC'.indexOf(this.ctrlChar)>=0)a+=this.ctrlChar;var b=/[^\x01-\x7f](hn|hc|gn)$/i.exec(a);if(b){this.value=a.substr(0,a.length-2)+b[1].charAt(1)+b[1].charAt(0);this.changed=1}else if(!this.changed){return 0}b=/\w([^\x01-\x7f])(\w*)([^\x01-\x7f])\S*$/.exec(this.value);if(!b)return 0;var i=this.charMap.isVowel(b[1]);var c=(i-1)%24+1,ci=(i-c)/24;var d=this.charMap.isVowel(b[3]);if(!ci||!d)return 0;var e=(d-1)%24+1;var f=this.charMap.charAt(c)+b[2]+this.charMap.charAt(ci*24+e);this.value=this.value.replace(new RegExp(b[1]+b[2]+b[3],'g'),f)};vietTyper.prototype.findCharToChange=function(a){var b=this.charMap.lastCharsOf(this.value,5);var i=0,c=b[0][0],chr=0;if(c=='\\')return[c,this.value.length-1,1];if(a==15){while(!(chr=this.charMap.isVD(c))){if((c<'A')||(i>=4)||!(c=b[++i][0]))return null}}else{while("cghmnptCGHMNPT".indexOf(c)>=0){if((c<'A')||(i>=2)||!(c=b[++i][0]))return null}}c=b[0][0].toLowerCase();var d=b[1][0].toLowerCase();var e=b[2][0].toLowerCase();if(i==0&&a!=15){if((chr=this.charMap.isVowel(b[1][0]))&&("uyoia".indexOf(c)>=0)&&!this.charMap.isUO(d,c)&&!((d=='o'&&c=='a')||(d=='u'&&c=='y'))&&!((e=='q'&&d=='u')||(e=='g'&&d=='i')))i++;if(c=='a'&&(a==9||a==7))i=0}c=b[i][0];if((i==0||chr==0)&&a!=15)chr=this.charMap.isVowel(c);if(!chr)return null;var f=b[i][1],isuo=0;if((i>0)&&(a==7||a==8||a==11)){isuo=this.charMap.isUO(b[i+1][0],c);if(isuo){chr=isuo;f+=b[++i][1];isuo=1}}var g=this.value.length;for(var j=0;j<=i;j++)g-=b[j][1];return[chr,g,f,isuo]};function vietCharMap(){this.vietChars=null;this.length=149;this.chrCache=new Array(20);this.indCache=new Array(20);this.cptr=0;this.caching=function(a,b){this.chrCache[this.cptr]=a;this.indCache[this.cptr++]=b;this.cptr%=20};this.vmap=[[7,7,7,8,8,8,9,10,11,15],[0,3,6,0,6,9,0,3,6,0],[1,4,7,2,8,10,1,4,7,1]];return this}vietCharMap.prototype.charAt=function(a){var b=this.vietChars[a];return b?String.fromCharCode(b):null};vietCharMap.prototype.isVowel=function(a){var i=0;while((i<20)&&(a!=this.chrCache[i]))i++;if(i<20)return this.indCache[i];i=this.length-5;while((a!=this.charAt(i))&&i)i--;this.caching(a,i);return i};vietCharMap.prototype.isVD=function(a){var b=this.length-5;while((a!=this.charAt(b))&&(b<this.length))b++;return(b<this.length)?b:0};vietCharMap.prototype.isUO=function(a,b){if(!a||!b)return 0;var c=this.isVowel(a);var d=(c-1)%12;if((d!=9)&&(d!=10))return 0;var e=this.isVowel(b);d=(e-1)%12;if((d!=6)&&(d!=7)&&(d!=8))return 0;return[c,e]};vietCharMap.prototype.getDau=function(a,b){var c=(a<25)?0:1;var d=(a-1)%24+1;var e=(b==6)?0:b;if((b==6)&&!c)return[0];var f=e*24+d;if(f==a)f=d;var g=this.charAt(f);if(!g)g=this.lowerCaseOf(0,f);return[1,g,f>24||b==6]};vietCharMap.prototype.getAEOWD=function(a,b,d){var c=0,i1=d?a[0]:a;var e=(b==15)?(i1-1)%2:(i1-1)%12;if(d){var f=a[1]-(a[1]-1)%12;if(b==7||b==11){c=this.charAt(i1-e+9)+this.charAt(f+7)}else if(b==8){c=this.charAt(i1-e+10)+this.charAt(f+8)}return[c!=0,c,1]}var i=-1,shif=0,del=0;while(shif==0&&++i<this.vmap[0].length){if(this.vmap[0][i]==b){if(this.vmap[1][i]==e){shif=this.vmap[2][i]-e}else if(this.vmap[2][i]==e){shif=this.vmap[1][i]-e}}}if(shif==0){if(b==7&&(e==2||e==8))shif=-1;else if((b==9&&e==2)||(b==11&&e==8))shif=-1;else if(b==8&&(e==1||e==7))shif=1;del=1}else{del=(shif>0)}i1+=shif;var g=this.charAt(i1);if(i1<145)this.caching(g,i1);if(!g)g=this.lowerCaseOf(0,i1);return[shif!=0,g,del]};vietCharMap.prototype.lastCharsOf=function(a,b){if(!b)return[a.charAt(a.length-1),1];var c=new Array(b);for(var i=0;i<b;i++){c[i]=[a.charAt(a.length-i-1),1]}return c};function vietUnicodeMap(){var a=new vietCharMap();a.vietChars=new Array("UNICODE",97,226,259,101,234,105,111,244,417,117,432,121,65,194,258,69,202,73,79,212,416,85,431,89,225,7845,7855,233,7871,237,243,7889,7899,250,7913,253,193,7844,7854,201,7870,205,211,7888,7898,218,7912,221,224,7847,7857,232,7873,236,242,7891,7901,249,7915,7923,192,7846,7856,200,7872,204,210,7890,7900,217,7914,7922,7841,7853,7863,7865,7879,7883,7885,7897,7907,7909,7921,7925,7840,7852,7862,7864,7878,7882,7884,7896,7906,7908,7920,7924,7843,7849,7859,7867,7875,7881,7887,7893,7903,7911,7917,7927,7842,7848,7858,7866,7874,7880,7886,7892,7902,7910,7916,7926,227,7851,7861,7869,7877,297,245,7895,7905,361,7919,7929,195,7850,7860,7868,7876,296,213,7894,7904,360,7918,7928,100,273,68,272);return a}function vietKeys(){this.getAction=function(a){var i=this.keys.indexOf(a.ctrlChar.toLowerCase());if(i>=0)a.compose(this.actions[i])};return this}function vietKeysOff(){this.off=true;this.getAction=function(a){};return this}function vietKeysTelex(){var k=new vietKeys();k.keys="sfjrxzaeowd";k.actions=[1,2,3,4,5,6,9,10,11,8,15];return k}function vietKeysVni(){var k=new vietKeys();k.keys="0123456789";k.actions=[6,1,2,4,5,3,7,8,8,15];return k}function vietKeysViqr(){var k=new vietKeys();k.keys="\xB4/'\u2019`.?~-^(*+d";k.actions=[1,1,1,1,2,3,4,5,6,7,8,8,8,15];return k}function vietKeysAll(){var k=new vietKeys();k.keys="sfjrxzaeowd0123456789\xB4/'`.?~-^(*+d";k.actions=[1,2,3,4,5,6,9,10,11,8,15,6,1,2,4,5,3,7,8,8,15,1,1,1,2,3,4,5,6,7,8,8,8,15];return k}