b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
29 lines
No EOL
5.4 KiB
JavaScript
29 lines
No EOL
5.4 KiB
JavaScript
;(function(){'use strict';var unsafeFilenamePattern=/[^a-zA-Z0-9_#.()?&%-]/g;var encoder=new TextEncoder('UTF-8');function SMIL_generateSlides(data,slide,slideIndex){const DURATION=5000;var id;var blobType;var media='';var text='';var name='';if(slide.blob){blobType=Utils.typeFromMimeType(slide.blob.type);if(blobType){var tagName=tagNameFromBlobType(blobType);var region='region="Image"';if(tagName==='ref'){region='';}
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name=slide.name.substr(slide.name.lastIndexOf('/')+1);name=name.replace(unsafeFilenamePattern,'#');name=SMIL_generateUniqueLocation(data,name);media='<'+tagName+' src="'+name+'" '+region+'/>';data.attachments.push({id:'<'+name+'>',location:name,content:slide.blob});}}
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if(slide.text){id='text_'+slideIndex+'.txt';text='<text src="'+id+'" region="Text"/>';data.attachments.push({id:'<'+id+'>',location:id,content:new Blob([encoder.encode(slide.text)],{type:'text/plain'})});}
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data.parts.push('<par dur="'+DURATION+'ms">'+media+text+'</par>');return data;}
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function tagNameFromBlobType(blobType){var out;switch(blobType){case'vcard':out='ref';break;default:out=blobType;}
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return out;}
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function SMIL_generateUniqueLocation(data,location){var extension,name,result;var FILENAME_LIMIT=40;function SMIL_uniqueLocationMatches(attachment){return attachment.location===result;}
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var index=location.lastIndexOf('.');if(index===-1){name=location;extension='';}else{extension=location.slice(index);name=location.slice(0,index);}
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if(name.length+extension.length>FILENAME_LIMIT){name=name.slice(0,FILENAME_LIMIT-extension.length);}
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result=name+extension;var duplicateIndex=2;while(data.attachments.some(SMIL_uniqueLocationMatches)){var truncIndex=0;result=name+'_'+duplicateIndex++ +extension;while(result.length>FILENAME_LIMIT){duplicateIndex=2;name=name.slice(0,--truncIndex);result=name+extension;}}
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return result;}
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window.SMIL={parse:function SMIL_parse(message){var smil=message.smil;var attachments=message.attachments;var slides=[];var attachmentsNotFound=false;var smilMismatched=false;var doc;var parTags;function readTextBlob(blob){if(!blob){return Promise.resolve('');}
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var defer=Utils.Promise.defer();var textReader=new FileReader();textReader.onload=function(event){defer.resolve(event.target.result);};textReader.onerror=function(event){console.error('Error reading text blob');defer.resolve('');};textReader.readAsText(blob,'UTF-8');return defer.promise;}
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function findAttachment(name){var index=0;var length=attachments.length;name=name.replace(/^cid:/,'');for(;index<length;index++){if(attachments[index].location===name||attachments[index].id==='<'+name+'>'){return attachments[index];}}
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return null;}
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function convertWbmpToPng(slide){var defer=Utils.Promise.defer();var reader;slide.name=slide.name.slice(0,-5)+'.png';reader=new FileReader();reader.onload=function(event){WBMP.decode(event.target.result,function callback(blob){slide.blob=blob;defer.resolve();});};reader.onerror=function(event){console.error('Error reading text blob');defer.resolve();};reader.readAsArrayBuffer(slide.blob);return defer.promise;}
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function SMIL_parseWithoutSMIL(attachment,idx){var blob=attachment.content;if(!blob){return Promise.resolve();}
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var result;var type=Utils.typeFromMimeType(blob.type);if(type==='text'&&blob.type==='text/plain'){result=readTextBlob(blob).then((text)=>{slides[idx]={text:text};});}else if(type){var slide={name:attachment.location,blob:attachment.content};if(slide.name&&slide.name.slice(-5)==='.wbmp'){result=convertWbmpToPng(slide);}
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slides[idx]=slide;}
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return result||Promise.resolve();}
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function SMIL_parseHandleParTag(par,index){if(attachmentsNotFound){return;}
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var mediaElements=par.querySelectorAll('img, video, audio, ref');var textElement=par.querySelector('text');var attachment,src;var promises=Array.from(mediaElements).map((element)=>{var result;var slide={};src=element.getAttribute('src');attachment=findAttachment(src);if(attachment){slide={name:attachment.location,blob:attachment.content};slides.push(slide);if(slide.name&&slide.name.slice(-5)==='.wbmp'){result=convertWbmpToPng(slide);}}else{attachmentsNotFound=true;}
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return result||Promise.resolve();});if(textElement){src=textElement.getAttribute('src');attachment=findAttachment(src);if(attachment){var slide=slides[slides.length-1];if(!slide||typeof slide.text!=='undefined'){slide={};slides.push(slide);}
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slide.text='';promises.push(readTextBlob(attachment.content).then((text)=>slide.text=text));}else{attachmentsNotFound=true;}}
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return Promise.all(promises);}
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var result;if(smil){doc=(new DOMParser()).parseFromString(smil,'application/xml');parTags=doc.documentElement.getElementsByTagName('par');var elements=Array.reduce(parTags,(count,par)=>count+par.childElementCount,0);if(elements!==attachments.length){smilMismatched=true;}else{result=Promise.all(Array.from(parTags).map(SMIL_parseHandleParTag));}}
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if(!smil||attachmentsNotFound||!slides.length||smilMismatched){slides=Array(attachments.length);result=Promise.all(attachments.map(SMIL_parseWithoutSMIL));}
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return(result||Promise.resolve()).then(()=>slides);},generate:function SMIL_generate(slides){const HEADER='<head><layout>'+'<root-layout width="320px" height="480px"/>'+'<region id="Image" left="0px" top="0px"'+' width="320px" height="320px" fit="meet"/>'+'<region id="Text" left="0px" top="320px"'+' width="320px" height="160px" fit="meet"/>'+'</layout></head>';var data=slides.reduce(SMIL_generateSlides,{attachments:[],parts:[]});data.smil='<smil>'+HEADER+'<body>'+
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data.parts.join('')+'</body></smil>';delete data.parts;return data;}};})(); |