898 lines
25 KiB
JavaScript
898 lines
25 KiB
JavaScript
const sax = require('./sax');
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//node types
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const NODE = 1;
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const TEXT = 2;
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const CDATA = 3;
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const COMMENT = 4;
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const name2type = {
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'NODE': NODE,
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'TEXT': TEXT,
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'CDATA': CDATA,
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'COMMENT': COMMENT,
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};
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const type2name = {
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[NODE]: 'NODE',
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[TEXT]: 'TEXT',
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[CDATA]: 'CDATA',
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[COMMENT]: 'COMMENT',
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};
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class NodeBase {
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wideSelector(selectorString) {
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const result = {all: false, before: false, type: 0, name: ''};
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if (selectorString === '') {
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result.before = true;
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} else if (selectorString === '*') {
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result.all = true;
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} else if (selectorString[0] === '*') {
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const typeName = selectorString.substring(1);
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result.type = name2type[typeName];
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if (!result.type)
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throw new Error(`Unknown selector type: ${typeName}`);
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} else {
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result.name = selectorString;
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}
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return result;
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}
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checkNode(rawNode, selectorObj) {
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return selectorObj.all || selectorObj.before
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|| (selectorObj.type && rawNode[0] === selectorObj.type)
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|| (rawNode[0] === NODE && rawNode[1] === selectorObj.name);
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}
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findNodeIndex(nodes, selectorObj) {
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for (let i = 0; i < nodes.length; i++)
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if (this.checkNode(nodes[i], selectorObj))
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return i;
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}
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rawAdd(nodes, rawNode, selectorObj) {
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if (selectorObj.all) {
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nodes.push(rawNode);
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} else if (selectorObj.before) {
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nodes.unshift(rawNode);
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} else {
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const index = this.findNodeIndex(nodes, selectorObj);
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if (index >= 0)
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nodes.splice(index, 0, rawNode);
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else
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nodes.push(rawNode);
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}
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}
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rawRemove(nodes, selectorObj) {
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if (selectorObj.before)
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return;
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for (let i = nodes.length - 1; i >= 0; i--) {
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if (this.checkNode(nodes[i], selectorObj))
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nodes.splice(i, 1);
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}
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}
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}
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class NodeObject extends NodeBase {
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constructor(raw = null) {
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super();
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if (raw)
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this.raw = raw;
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else
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this.raw = [];
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}
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get type() {
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return this.raw[0] || null;
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}
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get name() {
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if (this.type === NODE)
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return this.raw[1] || null;
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return null;
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}
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set name(value) {
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if (this.type === NODE)
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this.raw[1] = value;
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}
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attrs(key, value) {
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if (this.type !== NODE)
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return null;
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let map = null;
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if (key instanceof Map) {
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map = key;
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this.raw[2] = Array.from(map);
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} else if (Array.isArray(this.raw[2])) {
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map = new Map(this.raw[2]);
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if (key) {
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map.set(key, value);
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this.raw[2] = Array.from(map);
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}
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}
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return map;
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}
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get value() {
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switch (this.type) {
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case NODE:
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return this.raw[3] || null;
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case TEXT:
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case CDATA:
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case COMMENT:
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return this.raw[1] || null;
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}
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return null;
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}
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set value(v) {
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switch (this.type) {
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case NODE:
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this.raw[3] = v;
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break;
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case TEXT:
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case CDATA:
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case COMMENT:
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this.raw[1] = v;
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}
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}
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add(node, after = '*') {
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if (this.type !== NODE)
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return;
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const selectorObj = this.wideSelector(after);
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if (!Array.isArray(this.raw[3]))
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this.raw[3] = [];
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if (Array.isArray(node)) {
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for (const node_ of node)
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this.rawAdd(this.raw[3], node_.raw, selectorObj);
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} else {
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this.rawAdd(this.raw[3], node.raw, selectorObj);
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}
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return this;
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}
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remove(selector = '') {
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if (this.type !== NODE || !this.raw[3])
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return;
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const selectorObj = this.wideSelector(selector);
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this.rawRemove(this.raw[3], selectorObj);
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if (!this.raw[3].length)
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this.raw[3] = null;
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return this;
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}
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each(callback) {
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if (this.type !== NODE || !this.raw[3])
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return;
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for (const n of this.raw[3]) {
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if (callback(new NodeObject(n)) === false)
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break;
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}
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return this;
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}
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eachDeep(callback) {
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if (this.type !== NODE || !this.raw[3])
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return;
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const deep = (nodes, route = '') => {
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for (const n of nodes) {
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const node = new NodeObject(n);
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if (callback(node, route) === false)
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return false;
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if (node.type === NODE && node.value) {
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if (deep(node.value, `${route}${route ? '/' : ''}${node.name}`) === false)
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return false;
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}
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}
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}
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deep(this.raw[3]);
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return this;
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}
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}
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class XmlParser extends NodeBase {
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constructor(rawNodes = []) {
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super();
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this.NODE = NODE;
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this.TEXT = TEXT;
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this.CDATA = CDATA;
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this.COMMENT = COMMENT;
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this.rawNodes = rawNodes;
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}
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get count() {
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return this.rawNodes.length;
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}
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get nodes() {
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const result = [];
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for (const n of this.rawNodes)
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result.push(new NodeObject(n));
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return result;
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}
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nodeObject(node) {
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return new NodeObject(node);
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}
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newParser(nodes) {
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return new XmlParser(nodes);
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}
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checkType(type) {
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if (!type2name[type])
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throw new Error(`Invalid type: ${type}`);
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}
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createTypedNode(type, nameOrValue, attrs = null, value = null) {
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this.checkType(type);
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switch (type) {
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case NODE:
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if (!nameOrValue || typeof(nameOrValue) !== 'string')
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throw new Error('Node name must be non-empty string');
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return new NodeObject([type, nameOrValue, attrs, value]);
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case TEXT:
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case CDATA:
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case COMMENT:
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if (typeof(nameOrValue) !== 'string')
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throw new Error('Node value must be of type string');
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return new NodeObject([type, nameOrValue]);
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}
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}
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createNode(name, attrs = null, value = null) {
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return this.createTypedNode(NODE, name, attrs, value);
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}
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createText(value = null) {
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return this.createTypedNode(TEXT, value);
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}
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createCdata(value = null) {
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return this.createTypedNode(CDATA, value);
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}
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createComment(value = null) {
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return this.createTypedNode(COMMENT, value);
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}
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add(node, after = '*') {
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const selectorObj = this.wideSelector(after);
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for (const n of this.rawNodes) {
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if (n && n[0] === NODE) {
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if (!Array.isArray(n[3]))
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n[3] = [];
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if (Array.isArray(node)) {
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for (const node_ of node)
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this.rawAdd(n[3], node_.raw, selectorObj);
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} else {
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this.rawAdd(n[3], node.raw, selectorObj);
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}
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}
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}
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return this;
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}
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addRoot(node, after = '*') {
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const selectorObj = this.wideSelector(after);
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if (Array.isArray(node)) {
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for (const node_ of node)
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this.rawAdd(this.rawNodes, node_.raw, selectorObj);
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} else {
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this.rawAdd(this.rawNodes, node.raw, selectorObj);
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}
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return this;
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}
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remove(selector = '') {
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const selectorObj = this.wideSelector(selector);
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for (const n of this.rawNodes) {
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if (n && n[0] === NODE && Array.isArray(n[3])) {
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this.rawRemove(n[3], selectorObj);
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if (!n[3].length)
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n[3] = null;
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}
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}
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return this;
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}
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removeRoot(selector = '') {
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const selectorObj = this.wideSelector(selector);
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this.rawRemove(this.rawNodes, selectorObj);
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return this;
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}
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each(callback, self = false) {
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if (self) {
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for (const n of this.rawNodes) {
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if (callback(new NodeObject(n)) === false)
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return this;
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}
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} else {
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for (const n of this.rawNodes) {
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if (n[0] === NODE && n[3]) {
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for (const nn of n[3])
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if (callback(new NodeObject(nn)) === false)
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return this;
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}
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}
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}
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return this;
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}
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eachSelf(callback) {
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return this.each(callback, true);
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}
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eachDeep(callback, self = false) {
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const deep = (nodes, route = '') => {
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for (const n of nodes) {
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const node = new NodeObject(n);
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if (callback(node, route) === false)
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return false;
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if (node.type === NODE && node.value) {
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if (deep(node.value, `${route}${route ? '/' : ''}${node.name}`) === false)
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return false;
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}
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}
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}
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if (self) {
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deep(this.rawNodes);
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} else {
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for (const n of this.rawNodes) {
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if (n[0] === NODE && n[3])
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if (deep(n[3]) === false)
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break;
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}
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}
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return this;
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}
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eachDeepSelf(callback) {
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return this.eachDeep(callback, true);
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}
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rawSelect(nodes, selectorObj, callback) {
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for (const n of nodes)
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if (this.checkNode(n, selectorObj))
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callback(n);
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return this;
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}
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select(selector = '', self = false) {
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let newRawNodes = [];
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if (selector.indexOf('/') >= 0) {
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const selectors = selector.split('/');
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let res = this;
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for (const sel of selectors) {
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res = res.select(sel, self);
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self = false;
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}
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newRawNodes = res.rawNodes;
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} else {
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const selectorObj = this.wideSelector(selector);
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if (self) {
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this.rawSelect(this.rawNodes, selectorObj, (node) => {
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newRawNodes.push(node);
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})
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} else {
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for (const n of this.rawNodes) {
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if (n && n[0] === NODE && Array.isArray(n[3])) {
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this.rawSelect(n[3], selectorObj, (node) => {
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newRawNodes.push(node);
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})
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}
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}
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}
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}
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return new XmlParser(newRawNodes);
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}
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selectSelf(selector) {
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return this.select(selector, true);
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}
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selectFirst(selector, self) {
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const result = this.select(selector, self);
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const node = (result.count ? result.rawNodes[0] : null);
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return new NodeObject(node);
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}
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selectFirstSelf(selector) {
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return this.selectFirst(selector, true);
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}
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toJson(options = {}) {
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const {format = false} = options;
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if (format)
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return JSON.stringify(this.rawNodes, null, 2);
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else
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return JSON.stringify(this.rawNodes);
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}
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fromJson(jsonString) {
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const parsed = JSON.parse(jsonString);
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if (!Array.isArray(parsed))
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throw new Error('JSON parse error: root element must be array');
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this.rawNodes = parsed;
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return this;
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}
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toString(options = {}) {
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const {
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encoding = 'utf-8',
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format = false,
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noHeader = false,
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expandEmpty = false
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} = options;
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let deepType = 0;
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let out = '';
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if (!noHeader)
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out += `<?xml version="1.0" encoding="${encoding}"?>`;
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const nodesToString = (nodes, depth = 0) => {
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let result = '';
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const indent = '\n' + ' '.repeat(depth);
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let lastType = 0;
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for (const n of nodes) {
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const node = new NodeObject(n);
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let open = '';
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let body = '';
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let close = '';
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if (node.type === NODE) {
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if (!node.name)
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continue;
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let attrs = '';
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const nodeAttrs = node.attrs();
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if (nodeAttrs) {
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for (const [attrName, attrValue] of nodeAttrs) {
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if (typeof(attrValue) === 'string')
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attrs += ` ${attrName}="${attrValue}"`;
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else
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if (attrValue)
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attrs += ` ${attrName}`;
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}
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}
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if (node.value)
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body = nodesToString(node.value, depth + 2);
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if (!body && !expandEmpty) {
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open = (format && lastType !== TEXT ? indent : '');
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open += `<${node.name}${attrs}/>`;
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} else {
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open = (format && lastType !== TEXT ? indent : '');
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open += `<${node.name}${attrs}>`;
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close = (format && deepType && deepType !== TEXT ? indent : '');
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close += `</${node.name}>`;
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}
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} else if (node.type === TEXT) {
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body = node.value || '';
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} else if (node.type === CDATA) {
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body = (format && lastType !== TEXT ? indent : '');
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body += `<![CDATA[${node.value || ''}]]>`;
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} else if (node.type === COMMENT) {
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body = (format && lastType !== TEXT ? indent : '');
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body += `<!--${node.value || ''}-->`;
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}
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result += `${open}${body}${close}`;
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lastType = node.type;
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}
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deepType = lastType;
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return result;
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}
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out += nodesToString(this.rawNodes) + (format ? '\n' : '');
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return out;
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}
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fromString(xmlString, options = {}) {
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const {
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lowerCase = false,
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whiteSpace = false,
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pickNode = false,
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} = options;
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const parsed = [];
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const root = this.createNode('root', null, parsed);//fake node
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let node = root;
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let route = '';
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let routeStack = [];
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let ignoreNode = false;
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const onStartNode = (tag, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
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if (tag == '?xml')
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return;
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if (!ignoreNode && pickNode) {
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route += `${route ? '/' : ''}${tag}`;
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ignoreNode = !pickNode(route);
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}
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let newNode = node;
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if (!ignoreNode)
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newNode = this.createNode(tag);
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routeStack.push({tag, route, ignoreNode, node: newNode});
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if (ignoreNode)
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return;
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if (tail && tail.trim() !== '') {
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const parsedAttrs = sax.getAttrsSync(tail, lowerCase);
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const attrs = new Map();
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for (const attr of parsedAttrs.values()) {
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attrs.set(attr.fn, attr.value);
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}
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if (attrs.size)
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newNode.attrs(attrs);
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}
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if (!node.value)
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node.value = [];
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node.value.push(newNode.raw);
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node = newNode;
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};
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const onEndNode = (tag, tail, singleTag, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
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if (routeStack.length && routeStack[routeStack.length - 1].tag === tag) {
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routeStack.pop();
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if (routeStack.length) {
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const last = routeStack[routeStack.length - 1];
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route = last.route;
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ignoreNode = last.ignoreNode;
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node = last.node;
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} else {
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route = '';
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ignoreNode = false;
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node = root;
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}
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}
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|
}
|
|
|
|
const onTextNode = (text, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
|
|
if (ignoreNode || (pickNode && !pickNode(`${route}/*TEXT`)))
|
|
return;
|
|
|
|
if (!whiteSpace && text.trim() == '')
|
|
return;
|
|
|
|
if (!node.value)
|
|
node.value = [];
|
|
|
|
node.value.push(this.createText(text).raw);
|
|
};
|
|
|
|
const onCdata = (tagData, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
|
|
if (ignoreNode || (pickNode && !pickNode(`${route}/*CDATA`)))
|
|
return;
|
|
|
|
if (!node.value)
|
|
node.value = [];
|
|
|
|
node.value.push(this.createCdata(tagData).raw);
|
|
}
|
|
|
|
const onComment = (tagData, cutCounter, cutTag) => {// eslint-disable-line no-unused-vars
|
|
if (ignoreNode || (pickNode && !pickNode(`${route}/*COMMENT`)))
|
|
return;
|
|
|
|
if (!node.value)
|
|
node.value = [];
|
|
|
|
node.value.push(this.createComment(tagData).raw);
|
|
}
|
|
|
|
sax.parseSync(xmlString, {
|
|
onStartNode, onEndNode, onTextNode, onCdata, onComment, lowerCase
|
|
});
|
|
|
|
this.rawNodes = parsed;
|
|
|
|
return this;
|
|
}
|
|
|
|
toObject(options = {}) {
|
|
const {
|
|
compactText = false
|
|
} = options;
|
|
|
|
const nodesToObject = (nodes) => {
|
|
const result = {};
|
|
|
|
for (const n of nodes) {
|
|
const node = new NodeObject(n);
|
|
|
|
if (node.type === NODE) {
|
|
if (!node.name)
|
|
continue;
|
|
|
|
let newNode = {};
|
|
|
|
const nodeAttrs = node.attrs();
|
|
if (nodeAttrs)
|
|
newNode['*ATTRS'] = Object.fromEntries(nodeAttrs);
|
|
|
|
if (node.value) {
|
|
Object.assign(newNode, nodesToObject(node.value));
|
|
|
|
//схлопывание текстового узла до string
|
|
if (compactText
|
|
&& !Array.isArray(newNode)
|
|
&& Object.prototype.hasOwnProperty.call(newNode, '*TEXT')
|
|
&& Object.keys(newNode).length === 1) {
|
|
newNode = newNode['*TEXT'];
|
|
}
|
|
}
|
|
|
|
if (!Object.prototype.hasOwnProperty.call(result, node.name)) {
|
|
result[node.name] = newNode;
|
|
} else {
|
|
if (!Array.isArray(result[node.name])) {
|
|
result[node.name] = [result[node.name]];
|
|
}
|
|
|
|
result[node.name].push(newNode);
|
|
}
|
|
} else if (node.type === TEXT) {
|
|
if (!result['*TEXT'])
|
|
result['*TEXT'] = '';
|
|
result['*TEXT'] += node.value || '';
|
|
} else if (node.type === CDATA) {
|
|
if (!result['*CDATA'])
|
|
result['*CDATA'] = '';
|
|
result['*CDATA'] += node.value || '';
|
|
} else if (node.type === COMMENT) {
|
|
if (!result['*COMMENT'])
|
|
result['*COMMENT'] = '';
|
|
result['*COMMENT'] += node.value || '';
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
return nodesToObject(this.rawNodes);
|
|
}
|
|
|
|
fromObject(xmlObject) {
|
|
const objectToNodes = (obj) => {
|
|
const result = [];
|
|
|
|
for (const [tag, objNode] of Object.entries(obj)) {
|
|
if (tag === '*TEXT') {
|
|
result.push(this.createText(objNode).raw);
|
|
} else if (tag === '*CDATA') {
|
|
result.push(this.createCdata(objNode).raw);
|
|
} else if (tag === '*COMMENT') {
|
|
result.push(this.createComment(objNode).raw);
|
|
} else if (tag === '*ATTRS') {
|
|
//пропускаем
|
|
} else {
|
|
if (typeof(objNode) === 'string' || typeof(objNode) === 'number') {
|
|
result.push(this.createNode(tag, null, [this.createText(objNode.toString()).raw]).raw);
|
|
} else if (Array.isArray(objNode)) {
|
|
for (const n of objNode) {
|
|
if (typeof(n) === 'string') {
|
|
result.push(this.createNode(tag, null, [this.createText(n).raw]).raw);
|
|
} else if (typeof(n) === 'object') {
|
|
result.push(this.createNode(tag, (n['*ATTRS'] ? Object.entries(n['*ATTRS']) : null), objectToNodes(n)).raw);
|
|
}
|
|
}
|
|
|
|
} else if (typeof(objNode) === 'object') {
|
|
result.push(this.createNode(tag, (objNode['*ATTRS'] ? Object.entries(objNode['*ATTRS']) : null), objectToNodes(objNode)).raw);
|
|
} else {
|
|
throw new Error(`Unknown node type "${typeof(objNode)}" of node: ${objNode}`);
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
};
|
|
|
|
this.rawNodes = objectToNodes(xmlObject);
|
|
|
|
return this;
|
|
}
|
|
|
|
// XML Inspector start
|
|
narrowSelector(selector) {
|
|
const result = [];
|
|
selector = selector.trim();
|
|
|
|
//последний индекс не учитывется, только если не задан явно
|
|
if (selector && selector[selector.length - 1] == ']')
|
|
selector += '/';
|
|
|
|
const levels = selector.split('/');
|
|
|
|
for (const level of levels) {
|
|
const [name, indexPart] = level.split('[');
|
|
let index = 0;
|
|
if (indexPart) {
|
|
const i = indexPart.indexOf(']');
|
|
index = parseInt(indexPart.substring(0, i), 10) || 0;
|
|
}
|
|
|
|
let type = NODE;
|
|
if (name[0] === '*') {
|
|
const typeName = name.substring(1);
|
|
type = name2type[typeName];
|
|
if (!type)
|
|
throw new Error(`Unknown selector type: ${typeName}`);
|
|
}
|
|
|
|
result.push({type, name, index});
|
|
}
|
|
|
|
if (result.length);
|
|
result[result.length - 1].last = true;
|
|
|
|
return result;
|
|
}
|
|
|
|
inspect(selector = '') {
|
|
selector = this.narrowSelector(selector);
|
|
|
|
let raw = this.rawNodes;
|
|
for (const s of selector) {
|
|
if (s.name) {
|
|
let found = [];
|
|
for (const n of raw) {
|
|
if (n[0] === s.type && (n[0] !== NODE || s.name === '*NODE' || n[1] === s.name)) {
|
|
found.push(n);
|
|
|
|
if (found.length > s.index && !s.last)
|
|
break;
|
|
}
|
|
}
|
|
|
|
raw = found;
|
|
}
|
|
|
|
if (raw.length && !s.last) {
|
|
if (s.index < raw.length) {
|
|
raw = raw[s.index];
|
|
if (raw[0] === NODE && raw[3])
|
|
raw = raw[3];
|
|
else {
|
|
raw = [];
|
|
break;
|
|
}
|
|
} else {
|
|
raw = [];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return new XmlParser(raw);
|
|
}
|
|
|
|
$$(selector) {
|
|
return this.inspect(selector);
|
|
}
|
|
|
|
$$array(selector) {
|
|
const res = this.inspect(selector);
|
|
const result = [];
|
|
for (const n of res.rawNodes)
|
|
if (n[0] === NODE)
|
|
result.push(new XmlParser([n]));
|
|
|
|
return result;
|
|
}
|
|
|
|
$(selector) {
|
|
const res = this.inspect(selector);
|
|
const node = (res.count ? res.rawNodes[0] : null);
|
|
return new NodeObject(node);
|
|
}
|
|
|
|
v(selector = '') {
|
|
const res = this.$(selector);
|
|
return (res.type ? res.value : null);
|
|
}
|
|
|
|
text(selector = '') {
|
|
const res = this.$(`${selector}/*TEXT`);
|
|
return (res.type === TEXT ? res.value : null);
|
|
}
|
|
|
|
comment(selector = '') {
|
|
const res = this.$(`${selector}/*COMMENT`);
|
|
return (res.type === COMMENT ? res.value : null);
|
|
}
|
|
|
|
cdata(selector = '') {
|
|
const res = this.$(`${selector}/*CDATA`);
|
|
return (res.type === CDATA ? res.value : null);
|
|
}
|
|
|
|
concat(selector = '') {
|
|
const res = this.$$(selector);
|
|
const out = [];
|
|
for (const n of res.rawNodes) {
|
|
const node = new NodeObject(n);
|
|
if (node.type && node.type !== NODE)
|
|
out.push(node.value);
|
|
}
|
|
|
|
return (out.length ? out.join('') : null);
|
|
}
|
|
|
|
attrs(selector = '') {
|
|
const res = this.$(selector);
|
|
const attrs = res.attrs();
|
|
return (res.type === NODE && attrs ? Object.fromEntries(attrs) : null);
|
|
}
|
|
// XML Inspector finish
|
|
}
|
|
|
|
module.exports = XmlParser; |