mirror of https://github.com/hrfee/jfa-go.git
41 lines
1.1 KiB
TypeScript
41 lines
1.1 KiB
TypeScript
const removeMd = require("remove-markdown");
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function stripAltText(md: string): string {
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let altStart = -1; // Start of alt text (between '[' & ']')
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let urlStart = -1; // Start of url (between '(' & ')')
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let urlEnd = -1;
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let prevURLEnd = -2;
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let out = "";
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for (let i = 0; i < md.length; i++) {
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if (altStart != -1 && urlStart != -1 && md.charAt(i) == ')') {
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urlEnd = i - 1;
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out += md.substring(prevURLEnd+2, altStart-1) + md.substring(urlStart, urlEnd+1);
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prevURLEnd = urlEnd;
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altStart = -1;
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urlStart = -1;
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urlEnd = -1;
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continue;
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}
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if (md.charAt(i) == '[' && altStart == -1) {
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altStart = i + 1
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if (i > 0 && md.charAt(i-1) == '!') {
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altStart--
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}
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}
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if (i > 0 && md.charAt(i-1) == ']' && md.charAt(i) == '(' && urlStart == -1) {
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urlStart = i + 1
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}
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}
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if (prevURLEnd + 1 != md.length - 1) {
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out += md.substring(prevURLEnd+2)
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}
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if (out == "") {
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return md
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}
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return out
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}
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export function stripMarkdown(md: string): string {
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return removeMd(stripAltText(md));
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}
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