META-INF.resources.bower_components.jszip.lib.utf8.min.js Maven / Gradle / Ivy

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"use strict";var utils=require("./utils");var support=require("./support");var nodejsUtils=require("./nodejsUtils");var GenericWorker=require("./stream/GenericWorker");var _utf8len=new Array(256);for(var i=0;i<256;i++){_utf8len[i]=i>=252?6:i>=248?5:i>=240?4:i>=224?3:i>=192?2:1}_utf8len[254]=_utf8len[254]=1;var string2buf=function(str){var buf,c,c2,m_pos,i,str_len=str.length,buf_len=0;for(m_pos=0;m_pos>>6;buf[i++]=128|c&63}else if(c<65536){buf[i++]=224|c>>>12;buf[i++]=128|c>>>6&63;buf[i++]=128|c&63}else{buf[i++]=240|c>>>18;buf[i++]=128|c>>>12&63;buf[i++]=128|c>>>6&63;buf[i++]=128|c&63}}return buf};var utf8border=function(buf,max){var pos;max=max||buf.length;if(max>buf.length){max=buf.length}pos=max-1;while(pos>=0&&(buf[pos]&192)===128){pos--}if(pos<0){return max}if(pos===0){return max}return pos+_utf8len[buf[pos]]>max?pos:max};var buf2string=function(buf){var str,i,out,c,c_len;var len=buf.length;var utf16buf=new Array(len*2);for(out=0,i=0;i4){utf16buf[out++]=65533;i+=c_len-1;continue}c&=c_len===2?31:c_len===3?15:7;while(c_len>1&&i1){utf16buf[out++]=65533;continue}if(c<65536){utf16buf[out++]=c}else{c-=65536;utf16buf[out++]=55296|c>>10&1023;utf16buf[out++]=56320|c&1023}}if(utf16buf.length!==out){if(utf16buf.subarray){utf16buf=utf16buf.subarray(0,out)}else{utf16buf.length=out}}return utils.applyFromCharCode(utf16buf)};exports.utf8encode=function utf8encode(str){if(support.nodebuffer){return nodejsUtils.newBufferFrom(str,"utf-8")}return string2buf(str)};exports.utf8decode=function utf8decode(buf){if(support.nodebuffer){return utils.transformTo("nodebuffer",buf).toString("utf-8")}buf=utils.transformTo(support.uint8array?"uint8array":"array",buf);return buf2string(buf)};function Utf8DecodeWorker(){GenericWorker.call(this,"utf-8 decode");this.leftOver=null}utils.inherits(Utf8DecodeWorker,GenericWorker);Utf8DecodeWorker.prototype.processChunk=function(chunk){var data=utils.transformTo(support.uint8array?"uint8array":"array",chunk.data);if(this.leftOver&&this.leftOver.length){if(support.uint8array){var previousData=data;data=new Uint8Array(previousData.length+this.leftOver.length);data.set(this.leftOver,0);data.set(previousData,this.leftOver.length)}else{data=this.leftOver.concat(data)}this.leftOver=null}var nextBoundary=utf8border(data);var usableData=data;if(nextBoundary!==data.length){if(support.uint8array){usableData=data.subarray(0,nextBoundary);this.leftOver=data.subarray(nextBoundary,data.length)}else{usableData=data.slice(0,nextBoundary);this.leftOver=data.slice(nextBoundary,data.length)}}this.push({data:exports.utf8decode(usableData),meta:chunk.meta})};Utf8DecodeWorker.prototype.flush=function(){if(this.leftOver&&this.leftOver.length){this.push({data:exports.utf8decode(this.leftOver),meta:{}});this.leftOver=null}};exports.Utf8DecodeWorker=Utf8DecodeWorker;function Utf8EncodeWorker(){GenericWorker.call(this,"utf-8 encode")}utils.inherits(Utf8EncodeWorker,GenericWorker);Utf8EncodeWorker.prototype.processChunk=function(chunk){this.push({data:exports.utf8encode(chunk.data),meta:chunk.meta})};exports.Utf8EncodeWorker=Utf8EncodeWorker;