goddonebianu
72c6791d93
Some checks reported errors
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75 lines
1.7 KiB
TypeScript
75 lines
1.7 KiB
TypeScript
export function parseSrt(data: string) {
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const lines = data.split(/\r?\n/);
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const result = [];
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const re = new RegExp(
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"(\\d{2}:\\d{2}:\\d{2},\\d{3})\\s*-->\\s*(\\d{2}:\\d{2}:\\d{2},\\d{3})",
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);
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let i = 0;
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while (i < lines.length) {
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if (!lines[i].trim()) {
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i++;
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continue;
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}
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i++;
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if (i >= lines.length) break;
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const timeMatch = lines[i].match(re);
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if (!timeMatch) {
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i++;
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continue;
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}
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const start = toSeconds(timeMatch[1]);
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const end = toSeconds(timeMatch[2]);
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i++;
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let text = "";
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while (i < lines.length && lines[i].trim()) {
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text += lines[i] + "\n";
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i++;
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}
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result.push({ start, end, text: text.trim() });
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i++;
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}
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return result;
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}
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export function getNearistIndex(
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srt: { start: number; end: number; text: string }[],
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ct: number,
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) {
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for (let i = 0; i < srt.length; i++) {
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const s = srt[i];
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const l = ct - s.start >= 0;
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const r = ct - s.end >= 0;
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if (!(l || r)) return i - 1;
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if (l && !r) return i;
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}
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}
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export function getIndex(
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srt: { start: number; end: number; text: string }[],
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ct: number,
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) {
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for (let i = 0; i < srt.length; i++) {
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if (ct >= srt[i].start && ct <= srt[i].end) {
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return i;
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}
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}
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return null;
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}
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export function getSubtitle(
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srt: { start: number; end: number; text: string }[],
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currentTime: number,
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) {
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return (
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srt.find((sub) => currentTime >= sub.start && currentTime <= sub.end) ||
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null
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);
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}
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function toSeconds(timeStr: string): number {
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const [h, m, s] = timeStr.replace(",", ".").split(":");
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return parseFloat(
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(parseInt(h) * 3600 + parseInt(m) * 60 + parseFloat(s)).toFixed(3),
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);
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}
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