feat: allow position offset as option
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a082c71382
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@ -40,6 +40,11 @@ describe('chardet', () => {
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const res = await chardet.detectFile(path, { sampleSize: 32 });
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expect(res).toBe('UTF-8');
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});
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it('should detect encoding with smaller sample size and position offset', async () => {
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const res = await chardet.detectFile(path, { sampleSize: 32, position: 64 });
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expect(res).toBe('UTF-8');
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});
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});
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describe('#detectFileSync', () => {
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@ -50,6 +55,10 @@ describe('chardet', () => {
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it('should detect encoding with smaller sample size', () => {
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expect(chardet.detectFileSync(path, { sampleSize: 32 })).toBe('UTF-8');
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});
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it('should detect encoding with smaller sample size and position offset', () => {
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expect(chardet.detectFileSync(path, { sampleSize: 32, position: 64 })).toBe('UTF-8');
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});
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});
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describe('#analyse', () => {
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@ -10,7 +10,8 @@ import * as sbcs from './encoding/sbcs';
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import * as iso2022 from './encoding/iso2022';
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interface FullOptions {
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sampleSize: number
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sampleSize: number,
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position: number
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}
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type Options = Partial<FullOptions>
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@ -107,7 +108,7 @@ export const detectFile = (filepath: string, opts: Options = {}): Promise<Detect
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fd = fs.openSync(filepath, 'r');
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const sample: Buffer = Buffer.allocUnsafe(opts.sampleSize);
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fs.read(fd, sample, 0, opts.sampleSize, null, (err?: Error) => {
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fs.read(fd, sample, 0, opts.sampleSize, opts.position, (err?: Error) => {
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handler(err, sample);
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});
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return;
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@ -123,7 +124,7 @@ export const detectFileSync = (filepath: string, opts: Options = {}): DetectResu
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const fd = fs.openSync(filepath, 'r');
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const sample = Buffer.allocUnsafe(opts.sampleSize);
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fs.readSync(fd, sample, 0, opts.sampleSize);
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fs.readSync(fd, sample, 0, opts.sampleSize, opts.position);
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fs.closeSync(fd);
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return detect(sample);
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}
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