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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
import { Eta } from "../deps/eta.ts";import { posix } from "../deps/path.ts";import loader from "../core/loaders/text.ts";import { merge } from "../core/utils/object.ts";
import type Site from "../core/site.ts";import type { Engine, Helper, HelperOptions } from "../core/renderer.ts";import type { EtaConfig } from "../deps/eta.ts";
export interface Options {  /** The list of extensions this plugin applies to */  extensions?: string[];
  /** Optional sub-extension for page files */  pageSubExtension?: string;
  /**   * Custom includes path   * @default `site.options.includes`   */  includes?: string;
  /** Configuration to pass to Eta */  options?: Partial<EtaConfig>;}
// Default optionsexport const defaults: Options = {  extensions: [".eta"],  includes: "",  options: {    useWith: true,  },};
/** Template engine to render Eta files */export class EtaEngine implements Engine {  engine: Eta;  filters: Record<string, Helper> = {};  basePath: string;  includes: string;
  constructor(engine: Eta, basePath: string, includes: string) {    this.engine = engine;    this.basePath = basePath;    this.includes = includes;  }
  deleteCache(file: string): void {    const path = posix.join(this.basePath, file);    this.engine.templatesSync.remove(path);    this.engine.templatesAsync.remove(path);  }
  render(content: string, data: Record<string, unknown>, filename: string) {    const template = this.getTemplate(content, filename, true);
    data.filters = this.filters;    return this.engine.renderAsync(template, data, { filepath: filename });  }
  renderComponent(    content: string,    data: Record<string, unknown>,    filename: string,  ): string {    const template = this.getTemplate(content, filename, false);
    data.filters = this.filters;    return this.engine.render(template, data, { filepath: filename });  }
  getTemplate(content: string, filename: string, async?: boolean) {    filename = posix.join(this.basePath, filename);
    const templates = async      ? this.engine.templatesAsync      : this.engine.templatesSync;    if (!templates.get(filename)) {      templates.define(        filename,        this.engine.compile(          content,          { async },        ),      );    }    return templates.get(filename)!;  }
  addHelper(name: string, fn: Helper, options: HelperOptions) {    switch (options.type) {      case "filter":        this.filters[name] = fn;        return;    }  }}
/** Register the plugin to use Eta as a template engine */export default function (userOptions?: Options) {  return (site: Site) => {    const options = merge(      { ...defaults, includes: site.options.includes },      userOptions,    );
    // Configure Eta    const eta = new Eta({      ...options.options,      views: site.src(options.includes),    });
    const engine = new EtaEngine(eta, site.src(), options.includes);
    // Ignore includes folder    if (options.includes) {      site.ignore(options.includes);    }
    // Load the pages and register the engine    site.loadPages(options.extensions, {      loader,      engine,      pageSubExtension: options.pageSubExtension,    });  };}