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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 | 10x 1x | /**
* TOML Format Provider
*
* Handles parsing and serialization of TOML frontmatter in content files.
*/
import tomlify from 'tomlify-j0.4';
import toml from 'toml';
import type { FormatProvider, ParsedContent } from './types.js';
export class TomlFormatProvider implements FormatProvider {
defaultExt(): string {
return 'toml';
}
matchContentFirstLine(line: string): boolean {
return line.startsWith('+++');
}
parse(str: string): unknown {
return toml.parse(str);
}
dump(obj: unknown): string {
return tomlify.toToml(obj, { space: 2 });
}
dumpContent(obj: ParsedContent): string {
let content = '';
if (obj.mainContent) {
content = obj.mainContent;
delete obj.mainContent;
}
const header = this.dump(obj);
return `+++
${header}+++
${content}`;
}
parseFromMdFileString(str: string): ParsedContent {
const data = str;
const reg = /^[+]{3} *(\r?\n|\r|^)/gm;
let tomlEnd = -1;
for (let i = 0; i < 2; i++) {
const execResult = reg.exec(data);
if (execResult === null) break;
if (i === 1) tomlEnd = execResult.index;
}
let tomlStr: string, md: string;
if (tomlEnd === -1) {
tomlStr = '';
md = data;
} else {
tomlStr = data.substr(3, tomlEnd - 3);
md = data.substr(tomlEnd + 3);
}
const parsedData = this.parse(tomlStr) as ParsedContent;
if (parsedData === undefined) {
return {};
}
if (/\S/.test(md)) {
// if have non whitespaces
// remove the two first line breaks
md = md.replace(/(\r?\n|\r)/, '').replace(/(\r?\n|\r)/, '');
parsedData.mainContent = md;
}
return parsedData;
}
}
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