65 lines
2.3 KiB
TypeScript
65 lines
2.3 KiB
TypeScript
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import { Styles } from "./";
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import * as fastXmlParser from "fast-xml-parser";
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import { ImportedXmlComponent, ImportedRootElementAttributes } from "./../../file/xml-components";
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const parseOptions = {
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ignoreAttributes: false,
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attributeNamePrefix: "",
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attrNodeName: "_attr",
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};
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export class ExternalStylesFactory {
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/**
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* Creates new Style based on the given styles.
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* Parses the styles and convert them to XmlComponent.
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* Example content from styles.xml:
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* <?xml version="1.0">
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* <w:styles xmlns:mc="some schema" ...>
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*
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* <w:style w:type="paragraph" w:styleId="Heading1">
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* <w:name w:val="heading 1"/>
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* .....
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* </w:style>
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*
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* <w:style w:type="paragraph" w:styleId="Heading2">
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* <w:name w:val="heading 2"/>
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* .....
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* </w:style>
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*
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* <w:docDefaults>Or any other element will be parsed to</w:docDefaults>
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*
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* </w:styles>
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* @param externalStyles context from styles.xml
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*/
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public newInstance(externalStyles: string): Styles {
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const xmlStyles = fastXmlParser.parse(externalStyles, parseOptions)["w:styles"];
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// create styles with attributes from the parsed xml
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const importedStyle = new Styles(new ImportedRootElementAttributes(xmlStyles._attr));
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// convert other elements (not styles definitions, but default styles and so on ...)
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Object.keys(xmlStyles)
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.filter((element) => element !== "_attr" && element !== "w:style")
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.forEach((element) => {
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importedStyle.push(new ImportedXmlComponent(element, xmlStyles[element]._attr));
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});
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// convert the styles one by one
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xmlStyles["w:style"]
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.map((style) => this.convertElement("w:style", style))
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.forEach(importedStyle.push.bind(importedStyle));
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return importedStyle;
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}
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convertElement(elementName: string, element: any): ImportedXmlComponent {
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const xmlElement = new ImportedXmlComponent(elementName, element._attr);
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if (typeof element === "object") {
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Object.keys(element)
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.filter((key) => key !== "_attr")
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.map((item) => this.convertElement(item, element[item]))
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.forEach(xmlElement.push.bind(xmlElement));
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}
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return xmlElement;
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}
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}
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