@cisstech/nge
Version:
NG Essentials is a collection of libraries for Angular developers.
131 lines • 18.7 kB
JavaScript
import { InjectionToken, Injectable, Inject, Optional } from '@angular/core';
import { NGE_MARKDOWN_CONTRIBUTION } from '../nge-markdown-contribution';
import * as i0 from "@angular/core";
const DATA_LINES = 'data-nge-md-hl-lines';
const DATA_LANGUAGE = 'data-nge-md-hl-language';
const DATA_HIGHLIGHTS = 'data-nge-md-hl-highlights';
const DATA_FILENAME = 'data-nge-md-hl-filename';
/**
* Injection token to register a highlighter service.
*/
export const NGE_MARKDOWN_HIGHLIGHTER_SERVICE = new InjectionToken('NGE_MARKDOWN_HIGHLIGHTER_SERVICE');
/**
* Contribution to add an abstract syntax highlighter.
*/
export class NgeMarkdownHighlighter {
constructor(injector, options) {
this.injector = injector;
this.options = options;
}
contribute(transformer) {
this.createAttributes(transformer);
this.colorizeCodes(transformer);
}
createAttributes(transformer) {
transformer.addRendererTransformer((renderer) => {
renderer.code = (code, args) => {
args = args || '';
const attributes = new Map();
// LANGUAGE
const language = args.split(' ').slice(0, 1).pop() || 'plaintext';
attributes.set(DATA_LANGUAGE, language);
// LINE NUMBERING
let match = args.match(/lines="(.+?)"/);
if (match) {
attributes.set(DATA_LINES, match[1]);
}
// LINE HIGHLIGHTING
match = args.match(/highlights="(.+?)"/);
if (match) {
attributes.set(DATA_HIGHLIGHTS, match[1]);
}
// FILENAME
match = args.match(/filename="(.+?)"/);
if (match) {
attributes.set(DATA_FILENAME, match[1]);
}
const attribs = Array.from(attributes.entries())
.map(([attributeName, attributeValue]) => {
return `${attributeName}="${attributeValue}"`;
})
.join(' ');
console.log(attribs);
return `<pre ${attribs}><code>${this.escapeHtml(code)}</code></pre>`;
};
return renderer;
});
}
colorizeCodes(transformer) {
if (!this.options?.highligtht) {
return;
}
const highlight = this.options.highligtht;
transformer.addHtmlTransformer(async (element) => {
const preElements = Array.from(element.querySelectorAll(`pre[${DATA_LANGUAGE}]`));
for (const pre of preElements) {
highlight(this.injector, {
lines: pre.getAttribute(DATA_LINES) || '',
element: pre.querySelector('code'),
language: pre.getAttribute(DATA_LANGUAGE) || 'plaintext',
highlights: pre.getAttribute(DATA_HIGHLIGHTS) || '',
filename: pre.getAttribute(DATA_FILENAME) || '',
});
}
});
}
escapeHtml(input) {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const map = {
'<': '<',
'>': '>',
};
return input.replace(/[<>]/g, (tag) => map[tag] || tag);
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.1", ngImport: i0, type: NgeMarkdownHighlighter, deps: [{ token: i0.Injector }, { token: NGE_MARKDOWN_HIGHLIGHTER_SERVICE, optional: true }], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.1", ngImport: i0, type: NgeMarkdownHighlighter }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.1", ngImport: i0, type: NgeMarkdownHighlighter, decorators: [{
type: Injectable
}], ctorParameters: () => [{ type: i0.Injector }, { type: undefined, decorators: [{
type: Optional
}, {
type: Inject,
args: [NGE_MARKDOWN_HIGHLIGHTER_SERVICE]
}] }] });
/**
* Injection token to register `NgeMarkdownHighlighter` contribution.
*/
export const NgeMarkdownHighlighterProvider = {
provide: NGE_MARKDOWN_CONTRIBUTION,
multi: true,
useClass: NgeMarkdownHighlighter,
};
/**
* Provider to register `NgeMonacoColorizerService` as the syntax highlighter.
* @param type A reference to NgeMonacoColorizerService type.
*/
// eslint-disable-next-line @typescript-eslint/no-explicit-any
export function NgeMarkdownHighlighterMonacoProvider(type) {
return {
provide: NGE_MARKDOWN_HIGHLIGHTER_SERVICE,
useValue: {
highligtht: (injector, options) => {
const colorizer = injector.get(type, null);
const code = options.element;
const pre = code.parentElement;
pre.style.margin = '0.5em 0';
pre.style.overflow = 'auto';
pre.style.border = '1px solid #F2F2F2';
colorizer?.colorizeElement({
element: code,
language: options.language,
code: code.textContent,
lines: options.lines,
filename: options.filename,
highlights: options.highlights,
});
},
},
};
}
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{ Injector, InjectionToken, Injectable, Provider, Inject, Optional, Type } from '@angular/core'\nimport { NgeMarkdownTransformer } from '../nge-markdown-transformer'\nimport { NgeMarkdownContribution, NGE_MARKDOWN_CONTRIBUTION } from '../nge-markdown-contribution'\n\nconst DATA_LINES = 'data-nge-md-hl-lines'\nconst DATA_LANGUAGE = 'data-nge-md-hl-language'\nconst DATA_HIGHLIGHTS = 'data-nge-md-hl-highlights'\nconst DATA_FILENAME = 'data-nge-md-hl-filename'\n\n/**\n * Highlight options.\n */\nexport interface NgeMarkdownHighlightOptions {\n  /** &lt;code&gt;&lt;/code&gt; element to colorize. */\n  element: HTMLElement\n\n  /** Target language (default plaintext) */\n  language?: string\n\n  /**\n   * Start line number or a space separated list of line numbers to show.\n   *\n   * Example:\n   *\n   * *Show all line numbers starting 1*\n   *\n   * `\"1\"`\n   *\n   * *Show all line numbers from 1 to 4*\n   *\n   * `\"1-4\"`\n   *\n   * *Show lines 2 4 5 6 7 9*\n   *\n   * `\"2 4-7 9\"`\n   *\n   */\n  lines?: string\n\n  /**\n   * A space separated list of line numbers to highlight.\n   *\n   * Example:\n   *\n   * *Highlight line 1*\n   *\n   * `\"1\"`\n   *\n   * *Highlight all lines from 1 to 4*\n   *\n   * `\"1-4\"`\n   *\n   * *Highlightw lines 2 4 5 6 7 9*\n   *\n   * `\"2 4-7 9\"`\n   */\n  highlights?: string\n\n  /** Filename to display */\n  filename?: string\n}\n\n/**\n * Highlighter service representation.\n */\nexport interface NgeMarkdownHighlighterService {\n  /**\n   * Function called to hightlight an HTMLElement code.\n   * @param injector Injector reference to use Angular dependency injection.\n   * @param options Highlight options.\n   */\n  highligtht?(injector: Injector, options: NgeMarkdownHighlightOptions): void | Promise<void>\n}\n\n/**\n * Injection token to register a highlighter service.\n */\nexport const NGE_MARKDOWN_HIGHLIGHTER_SERVICE = new InjectionToken<NgeMarkdownHighlighterService>(\n  'NGE_MARKDOWN_HIGHLIGHTER_SERVICE'\n)\n\n/**\n * Contribution to add an abstract syntax highlighter.\n */\n@Injectable()\nexport class NgeMarkdownHighlighter implements NgeMarkdownContribution {\n  constructor(\n    private readonly injector: Injector,\n    @Optional()\n    @Inject(NGE_MARKDOWN_HIGHLIGHTER_SERVICE)\n    private readonly options: NgeMarkdownHighlighterService\n  ) {}\n\n  contribute(transformer: NgeMarkdownTransformer) {\n    this.createAttributes(transformer)\n    this.colorizeCodes(transformer)\n  }\n\n  private createAttributes(transformer: NgeMarkdownTransformer) {\n    transformer.addRendererTransformer((renderer) => {\n      renderer.code = (code, args) => {\n        args = args || ''\n        const attributes = new Map<string, string>()\n\n        // LANGUAGE\n        const language = args.split(' ').slice(0, 1).pop() || 'plaintext'\n        attributes.set(DATA_LANGUAGE, language)\n\n        // LINE NUMBERING\n        let match = args.match(/lines=\"(.+?)\"/)\n        if (match) {\n          attributes.set(DATA_LINES, match[1])\n        }\n\n        // LINE HIGHLIGHTING\n        match = args.match(/highlights=\"(.+?)\"/)\n        if (match) {\n          attributes.set(DATA_HIGHLIGHTS, match[1])\n        }\n\n        // FILENAME\n        match = args.match(/filename=\"(.+?)\"/)\n        if (match) {\n          attributes.set(DATA_FILENAME, match[1])\n        }\n\n        const attribs = Array.from(attributes.entries())\n          .map(([attributeName, attributeValue]) => {\n            return `${attributeName}=\"${attributeValue}\"`\n          })\n          .join(' ')\n          console.log(attribs)\n        return `<pre ${attribs}><code>${this.escapeHtml(code)}</code></pre>`\n      }\n      return renderer\n    })\n  }\n\n  private colorizeCodes(transformer: NgeMarkdownTransformer) {\n    if (!this.options?.highligtht) {\n      return\n    }\n    const highlight = this.options.highligtht\n    transformer.addHtmlTransformer(async (element) => {\n      const preElements = Array.from(element.querySelectorAll(`pre[${DATA_LANGUAGE}]`))\n      for (const pre of preElements) {\n        highlight(this.injector, {\n          lines: pre.getAttribute(DATA_LINES) || '',\n          element: pre.querySelector('code') as HTMLElement,\n          language: pre.getAttribute(DATA_LANGUAGE) || 'plaintext',\n          highlights: pre.getAttribute(DATA_HIGHLIGHTS) || '',\n          filename: pre.getAttribute(DATA_FILENAME) || '',\n        })\n      }\n    })\n  }\n\n  private escapeHtml(input: string) {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    const map: any = {\n      '<': '&lt;',\n      '>': '&gt;',\n    }\n    return input.replace(/[<>]/g, (tag) => map[tag] || tag)\n  }\n}\n\n/**\n * Injection token to register `NgeMarkdownHighlighter` contribution.\n */\nexport const NgeMarkdownHighlighterProvider: Provider = {\n  provide: NGE_MARKDOWN_CONTRIBUTION,\n  multi: true,\n  useClass: NgeMarkdownHighlighter,\n}\n\n/**\n * Provider to register `NgeMonacoColorizerService` as the syntax highlighter.\n * @param type A reference to NgeMonacoColorizerService type.\n */\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nexport function NgeMarkdownHighlighterMonacoProvider(type: Type<any>) {\n  return {\n    provide: NGE_MARKDOWN_HIGHLIGHTER_SERVICE,\n    useValue: {\n      highligtht: (injector, options) => {\n        const colorizer = injector.get(type, null)\n        const code = options.element\n        const pre = code.parentElement as HTMLElement\n        pre.style.margin = '0.5em 0'\n        pre.style.overflow = 'auto'\n        pre.style.border = '1px solid #F2F2F2'\n        colorizer?.colorizeElement({\n          element: code,\n          language: options.language,\n          code: code.textContent,\n          lines: options.lines,\n          filename: options.filename,\n          highlights: options.highlights,\n        })\n      },\n    } as NgeMarkdownHighlighterService,\n  }\n}\n"]}