can
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MIT-licensed, client-side, JavaScript framework that makes building rich web applications easy.
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JavaScript
/*!
* CanJS - 2.3.34
* http://canjs.com/
* Copyright (c) 2018 Bitovi
* Mon, 30 Apr 2018 20:56:51 GMT
* Licensed MIT
*/
/*can@2.3.34#view/parser/parser*/
function each(items, callback) {
for (var i = 0; i < items.length; i++) {
callback(items[i], i);
}
}
function makeMap(str) {
var obj = {}, items = str.split(',');
each(items, function (name) {
obj[name] = true;
});
return obj;
}
function handleIntermediate(intermediate, handler) {
for (var i = 0, len = intermediate.length; i < len; i++) {
var item = intermediate[i];
handler[item.tokenType].apply(handler, item.args);
}
return intermediate;
}
var alphaNumeric = 'A-Za-z0-9', alphaNumericHU = '-:_' + alphaNumeric, attributeNames = '[^=>\\s\\/]+', spaceEQspace = '\\s*=\\s*', singleCurly = '\\{[^\\}\\{]\\}', doubleCurly = '\\{\\{[^\\}]\\}\\}\\}?', attributeEqAndValue = '(?:' + spaceEQspace + '(?:' + '(?:' + doubleCurly + ')|(?:' + singleCurly + ')|(?:"[^"]*")|(?:\'[^\']*\')|[^>\\s]+))?', matchStash = '\\{\\{[^\\}]*\\}\\}\\}?', stash = '\\{\\{([^\\}]*)\\}\\}\\}?', startTag = new RegExp('^<([' + alphaNumeric + '][' + alphaNumericHU + ']*)' + '(' + '(?:\\s*' + '(?:(?:' + '(?:' + attributeNames + ')?' + attributeEqAndValue + ')|' + '(?:' + matchStash + ')+)' + ')*' + ')\\s*(\\/?)>'), endTag = new RegExp('^<\\/([' + alphaNumericHU + ']+)[^>]*>'), mustache = new RegExp(stash, 'g'), txtBreak = /<|\{\{/, space = /\s/;
var empty = makeMap('area,base,basefont,br,col,frame,hr,img,input,isindex,link,meta,param,embed');
var block = makeMap('a,address,article,applet,aside,audio,blockquote,button,canvas,center,dd,del,dir,div,dl,dt,fieldset,figcaption,figure,footer,form,frameset,h1,h2,h3,h4,h5,h6,header,hgroup,hr,iframe,ins,isindex,li,map,menu,noframes,noscript,object,ol,output,p,pre,section,script,table,tbody,td,tfoot,th,thead,tr,ul,video');
var inline = makeMap('a,abbr,acronym,applet,b,basefont,bdo,big,br,button,cite,code,del,dfn,em,font,i,iframe,img,input,ins,kbd,label,map,object,q,s,samp,script,select,small,span,strike,strong,sub,sup,textarea,tt,u,var');
var caseMatters = makeMap('altGlyph,altGlyphDef,altGlyphItem,animateColor,animateMotion,animateTransform,clipPath,feBlend,feColorMatrix,feComponentTransfer,feComposite,feConvolveMatrix,feDiffuseLighting,feDisplacementMap,feDistantLight,feFlood,feFuncA,feFuncB,feFuncG,feFuncR,feGaussianBlur,feImage,feMerge,feMergeNode,feMorphology,feOffset,fePointLight,feSpecularLighting,feSpotLight,feTile,feTurbulence,foreignObject,glyphRef,linearGradient,radialGradient,textPath');
var closeSelf = makeMap('colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr');
var special = makeMap('script');
var tokenTypes = 'start,end,close,attrStart,attrEnd,attrValue,chars,comment,special,done'.split(',');
var fn = function () {
};
var HTMLParser = function (html, handler, returnIntermediate) {
if (typeof html === 'object') {
return handleIntermediate(html, handler);
}
var intermediate = [];
handler = handler || {};
if (returnIntermediate) {
each(tokenTypes, function (name) {
var callback = handler[name] || fn;
handler[name] = function () {
if (callback.apply(this, arguments) !== false) {
intermediate.push({
tokenType: name,
args: [].slice.call(arguments, 0)
});
}
};
});
}
function parseStartTag(tag, tagName, rest, unary) {
tagName = caseMatters[tagName] ? tagName : tagName.toLowerCase();
if (block[tagName] && !inline[tagName]) {
var last = stack.last();
while (last && inline[last] && !block[last]) {
parseEndTag('', last);
last = stack.last();
}
}
if (closeSelf[tagName] && stack.last() === tagName) {
parseEndTag('', tagName);
}
unary = empty[tagName] || !!unary;
handler.start(tagName, unary);
if (!unary) {
stack.push(tagName);
}
HTMLParser.parseAttrs(rest, handler);
handler.end(tagName, unary);
}
function parseEndTag(tag, tagName) {
var pos;
if (!tagName) {
pos = 0;
} else {
tagName = caseMatters[tagName] ? tagName : tagName.toLowerCase();
for (pos = stack.length - 1; pos >= 0; pos--) {
if (stack[pos] === tagName) {
break;
}
}
}
if (pos >= 0) {
for (var i = stack.length - 1; i >= pos; i--) {
if (handler.close) {
handler.close(stack[i]);
}
}
stack.length = pos;
}
}
function parseMustache(mustache, inside) {
if (handler.special) {
handler.special(inside);
}
}
var callChars = function () {
if (charsText) {
if (handler.chars) {
handler.chars(charsText);
}
}
charsText = '';
};
var index, chars, match, stack = [], last = html, charsText = '';
stack.last = function () {
return this[this.length - 1];
};
while (html) {
chars = true;
if (!stack.last() || !special[stack.last()]) {
if (html.indexOf('<!--') === 0) {
index = html.indexOf('-->');
if (index >= 0) {
callChars();
if (handler.comment) {
handler.comment(html.substring(4, index));
}
html = html.substring(index + 3);
chars = false;
}
} else if (html.indexOf('</') === 0) {
match = html.match(endTag);
if (match) {
callChars();
html = html.substring(match[0].length);
match[0].replace(endTag, parseEndTag);
chars = false;
}
} else if (html.indexOf('<') === 0) {
match = html.match(startTag);
if (match) {
callChars();
html = html.substring(match[0].length);
match[0].replace(startTag, parseStartTag);
chars = false;
}
} else if (html.indexOf('{{') === 0) {
match = html.match(mustache);
if (match) {
callChars();
html = html.substring(match[0].length);
match[0].replace(mustache, parseMustache);
}
}
if (chars) {
index = html.search(txtBreak);
if (index === 0 && html === last) {
charsText += html.charAt(0);
html = html.substr(1);
index = html.search(txtBreak);
}
var text = index < 0 ? html : html.substring(0, index);
html = index < 0 ? '' : html.substring(index);
if (text) {
charsText += text;
}
}
} else {
html = html.replace(new RegExp('([\\s\\S]*?)</' + stack.last() + '[^>]*>'), function (all, text) {
text = text.replace(/<!--([\s\S]*?)-->|<!\[CDATA\[([\s\S]*?)]]>/g, '$1$2');
if (handler.chars) {
handler.chars(text);
}
return '';
});
parseEndTag('', stack.last());
}
if (html === last) {
throw new Error('Parse Error: ' + html);
}
last = html;
}
callChars();
parseEndTag();
handler.done();
return intermediate;
};
var callAttrStart = function (state, curIndex, handler, rest) {
state.attrStart = rest.substring(typeof state.nameStart === 'number' ? state.nameStart : curIndex, curIndex);
handler.attrStart(state.attrStart);
state.inName = false;
};
var callAttrEnd = function (state, curIndex, handler, rest) {
if (state.valueStart !== undefined && state.valueStart < curIndex) {
handler.attrValue(rest.substring(state.valueStart, curIndex));
} else if (!state.inValue) {
}
handler.attrEnd(state.attrStart);
state.attrStart = undefined;
state.valueStart = undefined;
state.inValue = false;
state.inName = false;
state.lookingForEq = false;
state.inQuote = false;
state.lookingForName = true;
};
HTMLParser.parseAttrs = function (rest, handler) {
if (!rest) {
return;
}
var i = 0;
var curIndex;
var state = {
inDoubleCurly: false,
inName: false,
nameStart: undefined,
inValue: false,
valueStart: undefined,
inQuote: false,
attrStart: undefined,
lookingForName: true,
lookingForValue: false,
lookingForEq: false
};
while (i < rest.length) {
curIndex = i;
var cur = rest.charAt(i);
var next = rest.charAt(i + 1);
var nextNext = rest.charAt(i + 2);
i++;
if (cur === '{' && next === '{') {
if (state.inValue && curIndex > state.valueStart) {
handler.attrValue(rest.substring(state.valueStart, curIndex));
} else if (state.inName && state.nameStart < curIndex) {
callAttrStart(state, curIndex, handler, rest);
callAttrEnd(state, curIndex, handler, rest);
} else if (state.lookingForValue) {
state.inValue = true;
} else if (state.lookingForEq && state.attrStart) {
callAttrEnd(state, curIndex, handler, rest);
}
state.inDoubleCurly = true;
state.doubleCurlyStart = curIndex + 2;
i++;
} else if (state.inDoubleCurly) {
if (cur === '}' && next === '}') {
var isTriple = nextNext === '}' ? 1 : 0;
handler.special(rest.substring(state.doubleCurlyStart, curIndex));
state.inDoubleCurly = false;
if (state.inValue) {
state.valueStart = curIndex + 2 + isTriple;
}
i += 1 + isTriple;
}
} else if (state.inValue) {
if (state.inQuote) {
if (cur === state.inQuote) {
callAttrEnd(state, curIndex, handler, rest);
}
} else if (space.test(cur)) {
callAttrEnd(state, curIndex, handler, rest);
}
} else if (cur === '=' && (state.lookingForEq || state.lookingForName || state.inName)) {
if (!state.attrStart) {
callAttrStart(state, curIndex, handler, rest);
}
state.lookingForValue = true;
state.lookingForEq = false;
state.lookingForName = false;
} else if (state.inName) {
if (space.test(cur)) {
callAttrStart(state, curIndex, handler, rest);
state.lookingForEq = true;
}
} else if (state.lookingForName) {
if (!space.test(cur)) {
if (state.attrStart) {
callAttrEnd(state, curIndex, handler, rest);
}
state.nameStart = curIndex;
state.inName = true;
}
} else if (state.lookingForValue) {
if (!space.test(cur)) {
state.lookingForValue = false;
state.inValue = true;
if (cur === '\'' || cur === '"') {
state.inQuote = cur;
state.valueStart = curIndex + 1;
} else {
state.valueStart = curIndex;
}
}
}
}
if (state.inName) {
callAttrStart(state, curIndex + 1, handler, rest);
callAttrEnd(state, curIndex + 1, handler, rest);
} else if (state.lookingForEq) {
callAttrEnd(state, curIndex + 1, handler, rest);
} else if (state.inValue) {
callAttrEnd(state, curIndex + 1, handler, rest);
}
};
module.exports = HTMLParser;