imsc
Version:
Renders IMSC documents to HTML5 fragments
100 lines • 55.5 kB
JavaScript
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function g(){this.styling=new G;this.layout=new L}function G(){this.styles={};this.initials={}}function y(){this.styleRefs=this.styleAttrs=this.id=null}function A(){this.styleAttrs=null}function L(){this.regions={}}function E(b,c){this.kind="image";this.src=b;this.type=c}function b(b){this.id=b}function k(b){this.regionID=b}function c(b){this.styleAttrs=b}function d(b){this.sets=b}function D(b){this.contents=b}function h(b,c,a){this.explicit_begin=b;this.explicit_end=c;this.explicit_dur=a}function O(){this.kind=
"body"}function t(){this.kind="div"}function q(){this.kind="p"}function r(){this.kind="span"}function M(){this.kind="span"}function H(){this.kind="br"}function x(){}function T(){}function U(b){return b&&"xml:id"in b.attributes?b.attributes["xml:id"].value||null:null}function Q(b){return b&&"style"in b.attributes?b.attributes.style.value.split(" "):[]}function P(b,c){var a={};if(null!==b)for(var d in b.attributes){var e=b.attributes[d].uri+" "+b.attributes[d].local,g=n.byQName[e];if(void 0!==g){var k=
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function W(b,c,a,d){for(var e=c.length-1;0<=e;e--){var g=c[e];g in b.styles?S(b.styles[g].styleAttrs,a):F(d,"Non-existant style id referenced")}}function S(b,c){for(var a in b)b.hasOwnProperty(a)&&(a in c||(c[a]=b[a]))}function I(b,c){if(b&&b.warn&&b.warn(c))throw c;}function F(b,c){if(b&&b.error&&b.error(c))throw c;}function C(b,c){b&&b.fatal&&b.fatal(c);throw c;}function X(b,c){for(var a=0,d=b.length-1,e;a<=d;){e=Math.floor((a+d)/2);var g=b[e];if(g<c)a=e+1;else if(g>c)d=e-1;else return{found:!0,
index:e}}return{found:!1,index:a}}f.fromXML=function(b,c,d){var k=l.parser(!0,{xmlns:!0}),h=[],z=[],D=[],f=0,u=null;k.onclosetag=function(b){if(h[0]instanceof x)null!==u.head&&null!==u.head.styling&&W(u.head.styling,h[0].styleRefs,h[0].styleAttrs,c),delete h[0].styleRefs;else if(h[0]instanceof G)for(var a in h[0].styles)h[0].styles.hasOwnProperty(a)&&V(h[0],h[0].styles[a],c);else if(h[0]instanceof q||h[0]instanceof r){if(1<h[0].contents.length){b=[h[0].contents[0]];for(a=1;a<h[0].contents.length;a++)h[0].contents[a]instanceof
M&&b[b.length-1]instanceof M?b[b.length-1].text+=h[0].contents[a].text:b.push(h[0].contents[a]);h[0].contents=b}h[0]instanceof r&&1===h[0].contents.length&&h[0].contents[0]instanceof M&&(h[0].text=h[0].contents[0].text,delete h[0].contents)}else if(h[0]instanceof e)if(h[0].node.uri===m.ns_tt&&"metadata"===h[0].node.local)f--;else if(0<f&&d&&"onCloseTag"in d)d.onCloseTag();D.shift();z.shift();h.shift()};k.ontext=function(b){if(void 0!==h[0])if(h[0]instanceof r||h[0]instanceof q){if(h[0]instanceof r){var a=
h[0].styleAttrs[n.byName.ruby.qname];if("container"===a||"textContainer"===a||"baseContainer"===a)return}a=new M;a.initFromText(u,h[0],b,z[0],D[0],c);h[0].contents.push(a)}else if(h[0]instanceof e&&0<f&&d&&"onText"in d)d.onText(b)};k.onopentag=function(b){var a=b.attributes["xml:space"];a?D.unshift(a.value):0===D.length?D.unshift("default"):D.unshift(D[0]);(a=b.attributes["xml:lang"])?z.unshift(a.value):0===z.length?z.unshift(""):z.unshift(z[0]);if(b.uri===m.ns_tt)if("tt"===b.local)null!==u&&C(c,
"Two <tt> elements at ("+this.line+","+this.column+")"),u=new p,u.initFromNode(b,z[0],c),h.unshift(u);else if("head"===b.local)h[0]instanceof p||C(c,"Parent of <head> element is not <tt> at ("+this.line+","+this.column+")"),h.unshift(u.head);else if("styling"===b.local)h[0]instanceof g||C(c,"Parent of <styling> element is not <head> at ("+this.line+","+this.column+")"),h.unshift(u.head.styling);else if("style"===b.local)if(h[0]instanceof G){var k=new y;k.initFromNode(b,c);k.id?u.head.styling.styles[k.id]=
k:F(c,"<style> element missing @id attribute");h.unshift(k)}else h[0]instanceof x?(k=new y,k.initFromNode(b,c),S(k.styleAttrs,h[0].styleAttrs),h.unshift(k)):C(c,"Parent of <style> element is not <styling> or <region> at ("+this.line+","+this.column+")");else if("initial"===b.local)if(h[0]instanceof G){a=new A;a.initFromNode(b,c);for(k in a.styleAttrs)a.styleAttrs.hasOwnProperty(k)&&(u.head.styling.initials[k]=a.styleAttrs[k]);h.unshift(a)}else C(c,"Parent of <initial> element is not <styling> at ("+
this.line+","+this.column+")");else if("layout"===b.local)h[0]instanceof g||C(c,"Parent of <layout> element is not <head> at "+this.line+","+this.column+")"),h.unshift(u.head.layout);else if("region"===b.local)h[0]instanceof L||C(c,"Parent of <region> element is not <layout> at "+this.line+","+this.column+")"),k=new x,k.initFromNode(u,b,z[0],c),!k.id||k.id in u.head.layout.regions?F(c,"Ignoring <region> with duplicate or missing @id at "+this.line+","+this.column+")"):u.head.layout.regions[k.id]=
k,h.unshift(k);else if("body"===b.local)h[0]instanceof p||C(c,"Parent of <body> element is not <tt> at "+this.line+","+this.column+")"),null!==u.body&&C(c,"Second <body> element at "+this.line+","+this.column+")"),k=new O,k.initFromNode(u,b,z[0],c),u.body=k,h.unshift(k);else if("div"===b.local){h[0]instanceof t||h[0]instanceof O||C(c,"Parent of <div> element is not <body> or <div> at "+this.line+","+this.column+")");k=new t;k.initFromNode(u,h[0],b,z[0],c);if(a=k.styleAttrs[n.byName.backgroundImage.qname])k.contents.push(new E(a)),
delete k.styleAttrs[n.byName.backgroundImage.qname];h[0].contents.push(k);h.unshift(k)}else"image"===b.local?(h[0]instanceof t||C(c,"Parent of <image> element is not <div> at "+this.line+","+this.column+")"),k=new E,k.initFromNode(u,h[0],b,z[0],c),h[0].contents.push(k),h.unshift(k)):"p"===b.local?(h[0]instanceof t||C(c,"Parent of <p> element is not <div> at "+this.line+","+this.column+")"),k=new q,k.initFromNode(u,h[0],b,z[0],c),h[0].contents.push(k),h.unshift(k)):"span"===b.local?(h[0]instanceof
r||h[0]instanceof q||C(c,"Parent of <span> element is not <span> or <p> at "+this.line+","+this.column+")"),k=new r,k.initFromNode(u,h[0],b,z[0],D[0],c),h[0].contents.push(k),h.unshift(k)):"br"===b.local?(h[0]instanceof r||h[0]instanceof q||C(c,"Parent of <br> element is not <span> or <p> at "+this.line+","+this.column+")"),k=new H,k.initFromNode(u,h[0],b,z[0],c),h[0].contents.push(k),h.unshift(k)):"set"===b.local?(h[0]instanceof r||h[0]instanceof q||h[0]instanceof t||h[0]instanceof O||h[0]instanceof
x||h[0]instanceof H||C(c,"Parent of <set> element is not a content element or a region at "+this.line+","+this.column+")"),k=new T,k.initFromNode(u,h[0],b,c),h[0].sets.push(k),h.unshift(k)):h.unshift(new e(b));else h.unshift(new e(b));if(h[0]instanceof e)if(b.uri===m.ns_tt&&"metadata"===b.local)f++;else if(0<f&&d&&"onOpenTag"in d){k=[];for(var w in b.attributes)k[b.attributes[w].uri+" "+b.attributes[w].local]={uri:b.attributes[w].uri,local:b.attributes[w].local,value:b.attributes[w].value};d.onOpenTag(b.uri,
b.local,k)}};k.write(b).close();delete u.head.styling.styles;b=!1;for(var N in u.head.layout.regions)if(u.head.layout.regions.hasOwnProperty(N)){b=!0;break}b||(N=x.prototype.createDefaultRegion(u.lang),u.head.layout.regions[N.id]=N);for(var B in u.head.layout.regions)u.head.layout.regions.hasOwnProperty(B)&&a(u,u.head.layout.regions[B],null,null);u.body&&a(u,u.body,null,null);u.body&&w(u.body);return u};p.prototype.initFromNode=function(b,c,a){var d=K(b,m.ns_ttp,"cellResolution"),h=15;var k=32;null!==
d&&(d=/(\d+) (\d+)/.exec(d),null!==d?(k=parseInt(d[1]),h=parseInt(d[2])):I(a,"Malformed cellResolution value (using initial value instead)"));this.cellLength={h:new v.ComputedLength(0,1/h),w:new v.ComputedLength(1/k,0)};h=K(b,m.ns_ttp,"frameRate");d=30;null!==h&&(k=/(\d+)/.exec(h),null!==k?d=parseInt(k[1]):I(a,"Malformed frame rate attribute (using initial value instead)"));k=K(b,m.ns_ttp,"frameRateMultiplier");var e=1;null!==k&&(k=/(\d+) (\d+)/.exec(k),null!==k?e=parseInt(k[1])/parseInt(k[2]):I(a,
"Malformed frame rate multiplier attribute (using initial value instead)"));d*=e;e=1;k=K(b,m.ns_ttp,"tickRate");null===k?null!==h&&(e=d):(k=/(\d+)/.exec(k),null!==k?e=parseInt(k[1]):I(a,"Malformed tick rate attribute (using initial value instead)"));this.effectiveFrameRate=d;this.tickRate=e;k=K(b,m.ns_ittp,"aspectRatio");null===k&&(k=K(b,m.ns_ttp,"displayAspectRatio"));h=null;null!==k&&(d=/(\d+)\s+(\d+)/.exec(k),null!==d?(k=parseInt(d[1]),d=parseInt(d[2]),0!==k&&0!==d?h=k/d:F(a,"Illegal aspectRatio values (ignoring)")):
F(a,"Malformed aspectRatio attribute (ignoring)"));this.aspectRatio=h;h=K(b,m.ns_ttp,"timeBase");null!==h&&"media"!==h&&C(a,"Unsupported time base");b=Y(b,a);null===b?this.pxLength={h:null,w:null}:("px"===b.h.unit&&"px"===b.w.unit||C(a,"Extent on TT must be in px or absent"),this.pxLength={h:new v.ComputedLength(0,1/b.h.value),w:new v.ComputedLength(1/b.w.value,0)});this.dimensions={h:new v.ComputedLength(0,1),w:new v.ComputedLength(1,0)};this.lang=c};p.prototype._registerEvent=function(b){if(!(b.end<=
b.begin)){var c=X(this.events,b.begin);c.found||this.events.splice(c.index,0,b.begin);b.end!==Number.POSITIVE_INFINITY&&(c=X(this.events,b.end),c.found||this.events.splice(c.index,0,b.end))}};p.prototype.getMediaTimeRange=function(){return[this.events[0],this.events[this.events.length-1]]};p.prototype.getMediaTimeEvents=function(){return this.events};y.prototype.initFromNode=function(b,c){this.id=U(b);this.styleAttrs=P(b,c);this.styleRefs=Q(b)};A.prototype.initFromNode=function(b,c){this.styleAttrs=
{};for(var a in b.attributes)if(b.attributes[a].uri===m.ns_itts||b.attributes[a].uri===m.ns_ebutts||b.attributes[a].uri===m.ns_tts)this.styleAttrs[b.attributes[a].uri+" "+b.attributes[a].local]=b.attributes[a].value};E.prototype.initFromNode=function(b,a,e,g,p){(this.src="src"in e.attributes?e.attributes.src.value:null)||F(p,"Invalid image@src attribute");(this.type="type"in e.attributes?e.attributes.type.value:null)||F(p,"Invalid image@type attribute");c.prototype.initFromNode.call(this,b,a,e,p);
h.prototype.initFromNode.call(this,b,a,e,p);d.prototype.initFromNode.call(this,b,a,e,p);k.prototype.initFromNode.call(this,b,a,e,p);this.lang=g};b.prototype.initFromNode=function(b,c,a,d){this.id=U(a)};k.prototype.initFromNode=function(b,c,a,d){this.regionID=a&&"region"in a.attributes?a.attributes.region.value:""};c.prototype.initFromNode=function(b,c,a,d){this.styleAttrs=P(a,d);null!==b.head&&null!==b.head.styling&&W(b.head.styling,Q(a),this.styleAttrs,d)};d.prototype.initFromNode=function(b,c,a,
d){this.sets=[]};D.prototype.initFromNode=function(b,c,a,d){this.contents=[]};h.prototype.initFromNode=function(b,c,a,d){c=null;a&&"begin"in a.attributes&&(c=R(b.tickRate,b.effectiveFrameRate,a.attributes.begin.value),null===c&&I(d,"Malformed begin value "+a.attributes.begin.value+" (using 0)"));var k=null;a&&"dur"in a.attributes&&(k=R(b.tickRate,b.effectiveFrameRate,a.attributes.dur.value),null===k&&I(d,"Malformed dur value "+a.attributes.dur.value+" (ignoring)"));var h=null;a&&"end"in a.attributes&&
(h=R(b.tickRate,b.effectiveFrameRate,a.attributes.end.value),null===h&&I(d,"Malformed end value (ignoring)"));this.explicit_begin=c;this.explicit_end=h;this.explicit_dur=k;(b=a&&"timeContainer"in a.attributes?a.attributes.timeContainer.value:null)&&"par"!==b?"seq"===b?d="seq":(F(d,"Illegal value of timeContainer (assuming 'par')"),d="par"):d="par";this.timeContainer=d};O.prototype.initFromNode=function(b,a,e,g){c.prototype.initFromNode.call(this,b,null,a,g);h.prototype.initFromNode.call(this,b,null,
a,g);d.prototype.initFromNode.call(this,b,null,a,g);k.prototype.initFromNode.call(this,b,null,a,g);D.prototype.initFromNode.call(this,b,null,a,g);this.lang=e};t.prototype.initFromNode=function(b,a,e,g,p){c.prototype.initFromNode.call(this,b,a,e,p);h.prototype.initFromNode.call(this,b,a,e,p);d.prototype.initFromNode.call(this,b,a,e,p);k.prototype.initFromNode.call(this,b,a,e,p);D.prototype.initFromNode.call(this,b,a,e,p);this.lang=g};q.prototype.initFromNode=function(b,a,e,g,p){c.prototype.initFromNode.call(this,
b,a,e,p);h.prototype.initFromNode.call(this,b,a,e,p);d.prototype.initFromNode.call(this,b,a,e,p);k.prototype.initFromNode.call(this,b,a,e,p);D.prototype.initFromNode.call(this,b,a,e,p);this.lang=g};r.prototype.initFromNode=function(b,a,e,g,p,m){c.prototype.initFromNode.call(this,b,a,e,m);h.prototype.initFromNode.call(this,b,a,e,m);d.prototype.initFromNode.call(this,b,a,e,m);k.prototype.initFromNode.call(this,b,a,e,m);D.prototype.initFromNode.call(this,b,a,e,m);this.space=p;this.lang=g};M.prototype.initFromText=
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