46 lines
1.1 KiB
JavaScript
46 lines
1.1 KiB
JavaScript
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var fs = require('fs');
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var self = require('./index');
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module.exports.detectFile = function(filepath, opts, cb) {
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if (typeof opts === 'function') {
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cb = opts;
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opts = undefined;
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}
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var fd;
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var handler = function(err, buffer) {
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if (fd) {
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fs.closeSync(fd);
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}
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if (err) return cb(err, null);
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cb(null, self.detect(buffer, opts));
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};
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if (opts && opts.sampleSize) {
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fd = fs.openSync(filepath, 'r'),
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sample = Buffer.allocUnsafe(opts.sampleSize);
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fs.read(fd, sample, 0, opts.sampleSize, null, function(err) {
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handler(err, sample);
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});
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return;
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}
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fs.readFile(filepath, handler);
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};
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module.exports.detectFileSync = function(filepath, opts) {
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if (opts && opts.sampleSize) {
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var fd = fs.openSync(filepath, 'r'),
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sample = Buffer.allocUnsafe(opts.sampleSize);
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fs.readSync(fd, sample, 0, opts.sampleSize);
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fs.closeSync(fd);
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return self.detect(sample, opts);
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}
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return self.detect(fs.readFileSync(filepath), opts);
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};
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