forked from external/vscode-xml
140 lines
4.7 KiB
TypeScript
140 lines
4.7 KiB
TypeScript
'use strict';
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// Based on pretty-data (https://github.com/vkiryukhin/pretty-data)
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export class XmlFormatter {
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constructor(options?: IXmlFormatterOptions) {
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options = options || {};
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if (typeof options.preferSpaces === 'undefined') {
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options.preferSpaces = false;
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}
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if (typeof options.splitNamespaces === 'undefined') {
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options.splitNamespaces = true;
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}
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options.tabSize = options.tabSize || 4;
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options.newLine = options.newLine || '\n';
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this.newLine = options.newLine || '\n';
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this.indentPattern = (options.preferSpaces) ? ' '.repeat(options.tabSize) : '\t';
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this.splitNamespaces = options.splitNamespaces;
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}
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newLine: string;
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indentPattern: string;
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splitNamespaces: boolean;
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format(xml: string): string {
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xml = this.minify(xml, false);
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xml = xml.replace(/</g, '~::~<');
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if (this.splitNamespaces) {
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xml = xml
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.replace(/xmlns\:/g, '~::~xmlns:')
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.replace(/xmlns\=/g, '~::~xmlns=');
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}
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let parts: string[] = xml.split('~::~');
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let inComment: boolean = false;
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let level: number = 0;
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let output: string = '';
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for (let i = 0; i < parts.length; i++) {
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// <!
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if (parts[i].search(/<!/) > -1) {
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output += this._getIndent(level, parts[i]);
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inComment = true;
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// end <!
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if (parts[i].search(/-->/) > -1 || parts[i].search(/\]>/) > -1 || parts[i].search(/!DOCTYPE/) > -1) {
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inComment = false;
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}
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}
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// end <!
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else if (parts[i].search(/-->/) > -1 || parts[i].search(/\]>/) > -1) {
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output += parts[i];
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inComment = false;
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}
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// <elm></elm>
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else if (/^<\w/.test(parts[i - 1]) && /^<\/\w/.test(parts[i])
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&& /^<[\w:\-\.\,]+/.exec(parts[i - 1])[0] == /^<\/[\w:\-\.\,]+/.exec(parts[i])[0].replace('/', '')) {
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output += parts[i];
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if (!inComment) level--;
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}
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// <elm>
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else if (parts[i].search(/<\w/) > -1 && parts[i].search(/<\//) == -1 && parts[i].search(/\/>/) == -1) {
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output = (!inComment) ? output += this._getIndent(level++, parts[i]) : output += parts[i];
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}
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// <elm>...</elm>
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else if (parts[i].search(/<\w/) > -1 && parts[i].search(/<\//) > -1) {
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output = (!inComment) ? output += this._getIndent(level, parts[i]) : output += parts[i];
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}
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// </elm>
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else if (parts[i].search(/<\//) > -1) {
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output = (!inComment) ? output += this._getIndent(--level, parts[i]) : output += parts[i];
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}
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// <elm />
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else if (parts[i].search(/\/>/) > -1) {
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output = (!inComment) ? output += this._getIndent(level, parts[i]) : output += parts[i];
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}
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// <?xml ... ?>
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else if (parts[i].search(/<\?/) > -1) {
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output += this._getIndent(level, parts[i]);
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}
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// xmlns
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else if (parts[i].search(/xmlns\:/) > -1 || parts[i].search(/xmlns\=/) > -1) {
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output += this._getIndent(level, parts[i]);
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}
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else {
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output += parts[i];
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}
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}
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// remove leading newline
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if (output[0] == this.newLine) {
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output = output.slice(1);
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}
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else if (output.substring(0, 1) == this.newLine) {
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output = output.slice(2);
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}
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return output;
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}
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minify(xml: string, removeComments?: boolean): string {
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if (typeof removeComments === 'undefined') {
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removeComments = false;
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}
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xml = (removeComments) ? xml.replace(/\<![ \r\n\t]*(--([^\-]|[\r\n]|-[^\-])*--[ \r\n\t]*)\>/g, '') : xml;
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xml = xml.replace(/>\s{0,}</g, '><');
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return xml;
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}
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private _getIndent(level: number, trailingValue?: string): string {
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trailingValue = trailingValue || '';
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return `${this.newLine}${this.indentPattern.repeat(level)}${trailingValue}`;
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}
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}
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export interface IXmlFormatterOptions {
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preferSpaces?: boolean;
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tabSize?: number;
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newLine?: string;
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splitNamespaces?: boolean;
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} |