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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | 11x 450x 1101x 16x 16x 3160x 175x 175x 175x 176x 1x 175x 175x 175x 1x 174x 275x 275x 13x 262x 275x 275x 12x 23x | /*
Copyright 2012-2015, Yahoo Inc.
Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
*/
import type { ContentWriter } from "./file-writer";
const INDENT = " ";
/** attributes for an XML tag, keyed by attribute name */
export type XmlAttributes = Record<string, string | number>;
function attrString(attrs?: XmlAttributes): string {
return Object.entries(attrs || {})
.map(([k, v]) => ` ${k}="${v}"`)
.join("");
}
/**
* a utility class to produce well-formed, indented XML
* @param {ContentWriter} contentWriter the content writer that this utility wraps
* @constructor
*/
class XMLWriter {
declare cw: ContentWriter;
declare stack: string[];
constructor(contentWriter: ContentWriter) {
this.cw = contentWriter;
this.stack = [];
}
indent(str: string): string {
return this.stack.map(() => INDENT).join("") + str;
}
/**
* writes the opening XML tag with the supplied attributes
* @param {String} name tag name
* @param {Object} [attrs=null] attrs attributes for the tag
*/
openTag(name: string, attrs?: XmlAttributes): void {
const str = this.indent(`<${name + attrString(attrs)}>`);
this.cw.println(str);
this.stack.push(name);
}
/**
* closes an open XML tag.
* @param {String} name - tag name to close. This must match the writer's
* notion of the tag that is currently open.
*/
closeTag(name: string): void {
if (this.stack.length === 0) {
throw new Error(`Attempt to close tag ${name} when not opened`);
}
const stashed = this.stack.pop();
const str = `</${name}>`;
if (stashed !== name) {
throw new Error(`Attempt to close tag ${name} when ${stashed} was the one open`);
}
this.cw.println(this.indent(str));
}
/**
* writes a tag and its value opening and closing it at the same time
* @param {String} name tag name
* @param {Object} [attrs=null] attrs tag attributes
* @param {String} [content=null] content optional tag content
*/
inlineTag(name: string, attrs?: XmlAttributes, content?: string): void {
let str = "<" + name + attrString(attrs);
if (content) {
str += `>${content}</${name}>`;
} else {
str += "/>";
}
str = this.indent(str);
this.cw.println(str);
}
/**
* closes all open tags and ends the document
*/
closeAll(): void {
this.stack
.slice()
.reverse()
.forEach((name) => {
this.closeTag(name);
});
}
}
export default XMLWriter;
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