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vttlint.js
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vttlint.js
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'use strict';
const webvtt = require('node-webvtt');
const checks = {
mindur: require('./lib/mindur'),
maxdur: require('./lib/maxdur')
};
module.exports = function (file, opts) {
opts = opts || {};
const path = require('path');
const fs = require('fs');
file = file.trim();
file = path.resolve(process.cwd(), file);
let contents = '';
try {
contents = fs.readFileSync(file, 'utf8');
} catch (e) {
throw 'Error opening file ' + file + '.';
}
let parsed;
let errors = [];
// Parse VTT
try {
parsed = webvtt.parse(contents);
} catch (parseErr) {
return [{reason: parseErr.message}];
}
// Loop through VTT and do checks
parsed.cues.forEach(function cueLoop (cue, i) {
cue.index = i;
Object.keys(checks).forEach(function getSuggestions (checkName) {
if (opts[checkName] !== false) {
errors = errors.concat(
checks[checkName](cue, opts[checkName])
);
}
});
});
// Done
return errors; // TODO: Dedup/Sort?
};