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author | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
commit | de98e0b232509d5f40c135d540a70e415272ff85 (patch) | |
tree | a79222a5b58484ab3b80d18efcaaa7ccc4769b33 /node_modules/domutils/index.js | |
parent | e0c9d480a73fa629c1e4a47d3e721f1d2d345406 (diff) | |
download | wallet-core-de98e0b232509d5f40c135d540a70e415272ff85.tar.xz |
node_modules
Diffstat (limited to 'node_modules/domutils/index.js')
-rw-r--r-- | node_modules/domutils/index.js | 318 |
1 files changed, 318 insertions, 0 deletions
diff --git a/node_modules/domutils/index.js b/node_modules/domutils/index.js new file mode 100644 index 000000000..d8b2d2baa --- /dev/null +++ b/node_modules/domutils/index.js @@ -0,0 +1,318 @@ +var ElementType = require("domelementtype"), + DomUtils = module.exports; + +var isTag = DomUtils.isTag = ElementType.isTag; + +function getChildren(elem){ + return elem.children; +} +function getParent(elem){ + return elem.parent; +} +function getSiblings(elem){ + var parent = getParent(elem); + return parent ? getChildren(parent) : [elem]; +} +function getAttributeValue(elem, name){ + return elem.attribs && elem.attribs[name]; +} +function hasAttrib(elem, name){ + return hasOwnProperty.call(elem.attribs, name); +} +function getName(elem){ + return elem.name; +} + +DomUtils.getChildren = getChildren; +DomUtils.getParent = getParent; +DomUtils.getAttributeValue = getAttributeValue; +DomUtils.hasAttrib = hasAttrib; +DomUtils.getName = getName; +DomUtils.getSiblings = getSiblings; + +function find(test, arr, recurse, limit){ + var result = [], childs; + + for(var i = 0, j = arr.length; i < j; i++){ + if(test(arr[i])){ + result.push(arr[i]); + if(--limit <= 0) break; + } + + childs = getChildren(arr[i]); + if(recurse && childs && childs.length > 0){ + childs = find(test, childs, recurse, limit); + result = result.concat(childs); + limit -= childs.length; + if(limit <= 0) break; + } + } + + return result; +} + +function findOneChild(test, arr){ + for(var i = 0, l = arr.length; i < l; i++){ + if(test(arr[i])) return arr[i]; + } + + return null; +} + +function findOne(test, arr){ + var elem = null; + + for(var i = 0, l = arr.length; i < l && !elem; i++){ + if(test(arr[i])){ + elem = arr[i]; + } else if(arr[i].children && arr[i].children.length > 0){ + elem = findOne(test, arr[i].children); + } + } + + return elem; +} + +DomUtils.findOne = findOne; + +function findAll(test, elems){ + var result = []; + for(var i = 0, j = elems.length; i < j; i++){ + if(test(elems[i])) result.push(elems[i]); + + var childs = getChildren(elems[i]); + if(childs && childs.length){ + result = result.concat(findAll(test, childs)); + } + } + return result; +} + +DomUtils.findAll = findAll; + +function filter(test, element, recurse, limit){ + if(!Array.isArray(element)) element = [element]; + + if(typeof limit !== "number" || !isFinite(limit)){ + if(recurse === false){ + return element.filter(test); + } else { + return findAll(test, element); + } + } else if(limit === 1){ + if(recurse === false){ + element = findOneChild(test, element); + } else { + element = findOne(test, element); + } + return element ? [element] : []; + } else { + return find(test, element, recurse !== false, limit); + } +} + +DomUtils.filter = filter; + +DomUtils.testElement = function(options, element){ + for(var key in options){ + if(!options.hasOwnProperty(key)); + else if(key === "tag_name"){ + if(!isTag(element) || !options.tag_name(element.name)){ + return false; + } + } else if(key === "tag_type"){ + if(!options.tag_type(element.type)) return false; + } else if(key === "tag_contains"){ + if(isTag(element) || !options.tag_contains(element.data)){ + return false; + } + } else if(!element.attribs || !options[key](element.attribs[key])){ + return false; + } + } + return true; +}; + +var Checks = { + tag_name: function(name){ + if(typeof name === "function"){ + return function(elem){ return isTag(elem) && name(elem.name); }; + } else if(name === "*"){ + return isTag; + } else { + return function(elem){ return isTag(elem) && elem.name === name; }; + } + }, + tag_type: function(type){ + if(typeof type === "function"){ + return function(elem){ return type(elem.type); }; + } else { + return function(elem){ return elem.type === type; }; + } + }, + tag_contains: function(data){ + if(typeof type === "function"){ + return function(elem){ return !isTag(elem) && data(elem.data); }; + } else { + return function(elem){ return !isTag(elem) && elem.data === data; }; + } + } +}; + +function getAttribCheck(attrib, value){ + if(typeof value === "function"){ + return function(elem){ return elem.attribs && value(elem.attribs[attrib]); }; + } else { + return function(elem){ return elem.attribs && elem.attribs[attrib] === value; }; + } +} + +DomUtils.getElements = function(options, element, recurse, limit){ + var funcs = []; + for(var key in options){ + if(options.hasOwnProperty(key)){ + if(key in Checks) funcs.push(Checks[key](options[key])); + else funcs.push(getAttribCheck(key, options[key])); + } + } + + if(funcs.length === 0) return []; + if(funcs.length === 1) return filter(funcs[0], element, recurse, limit); + return filter( + function(elem){ + return funcs.some(function(func){ return func(elem); }); + }, + element, recurse, limit + ); +}; + +DomUtils.getElementById = function(id, element, recurse){ + if(!Array.isArray(element)) element = [element]; + return findOne(getAttribCheck("id", id), element, recurse !== false); +}; + +DomUtils.getElementsByTagName = function(name, element, recurse, limit){ + return filter(Checks.tag_name(name), element, recurse, limit); +}; + +DomUtils.getElementsByTagType = function(type, element, recurse, limit){ + return filter(Checks.tag_type(type), element, recurse, limit); +}; + +DomUtils.removeElement = function(elem){ + if(elem.prev) elem.prev.next = elem.next; + if(elem.next) elem.next.prev = elem.prev; + + if(elem.parent){ + var childs = elem.parent.children; + childs.splice(childs.lastIndexOf(elem), 1); + } +}; + +DomUtils.replaceElement = function(elem, replacement){ + if(elem.prev){ + elem.prev.next = replacement; + replacement.prev = elem.prev; + } + if(elem.next){ + elem.next.prev = replacement; + replacement.next = elem.next; + } + if(elem.parent){ + var childs = elem.parent.children; + childs.splice(childs.lastIndexOf(elem), 1, replacement); + replacement.parent = elem.parent; + } +}; + +DomUtils.getInnerHTML = function(elem){ + if(!elem.children) return ""; + + var childs = elem.children, + childNum = childs.length, + ret = ""; + + for(var i = 0; i < childNum; i++){ + ret += DomUtils.getOuterHTML(childs[i]); + } + + return ret; +}; + +//boolean attributes without a value (taken from MatthewMueller/cheerio) +var booleanAttribs = { + __proto__: null, + async: true, + autofocus: true, + autoplay: true, + checked: true, + controls: true, + defer: true, + disabled: true, + hidden: true, + loop: true, + multiple: true, + open: true, + readonly: true, + required: true, + scoped: true, + selected: true, + "/": true //TODO when is this required? +}; + +var emptyTags = { + __proto__: null, + area: true, + base: true, + basefont: true, + br: true, + col: true, + frame: true, + hr: true, + img: true, + input: true, + isindex: true, + link: true, + meta: true, + param: true, + embed: true +}; + +DomUtils.getOuterHTML = function(elem){ + var type = elem.type; + + if(type === ElementType.Text) return elem.data; + if(type === ElementType.Comment) return "<!--" + elem.data + "-->"; + if(type === ElementType.Directive) return "<" + elem.data + ">"; + if(type === ElementType.CDATA) return "<!CDATA " + DomUtils.getInnerHTML(elem) + "]]>"; + + var ret = "<" + elem.name; + if("attribs" in elem){ + for(var attr in elem.attribs){ + if(elem.attribs.hasOwnProperty(attr)){ + ret += " " + attr; + var value = elem.attribs[attr]; + if(!value){ + if( !(attr in booleanAttribs) ){ + ret += '=""'; + } + } else { + ret += '="' + value + '"'; + } + } + } + } + + if (elem.name in emptyTags && elem.children.length === 0) { + return ret + " />"; + } else { + return ret + ">" + DomUtils.getInnerHTML(elem) + "</" + elem.name + ">"; + } +}; + +DomUtils.getText = function getText(elem){ + if(Array.isArray(elem)) return elem.map(getText).join(""); + if(isTag(elem) || elem.type === ElementType.CDATA) return getText(elem.children); + if(elem.type === ElementType.Text) return elem.data; + return ""; +}; |