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284 lines
10 KiB
284 lines
10 KiB
'use strict';
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require('../common');
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var assert = require('assert');
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var Buffer = require('buffer').Buffer;
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var b = Buffer.from('abcdef');
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var buf_a = Buffer.from('a');
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var buf_bc = Buffer.from('bc');
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var buf_f = Buffer.from('f');
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var buf_z = Buffer.from('z');
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var buf_empty = Buffer.from('');
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assert.equal(b.indexOf('a'), 0);
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assert.equal(b.indexOf('a', 1), -1);
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assert.equal(b.indexOf('a', -1), -1);
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assert.equal(b.indexOf('a', -4), -1);
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assert.equal(b.indexOf('a', -b.length), 0);
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assert.equal(b.indexOf('a', NaN), 0);
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assert.equal(b.indexOf('a', -Infinity), 0);
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assert.equal(b.indexOf('a', Infinity), -1);
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assert.equal(b.indexOf('bc'), 1);
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assert.equal(b.indexOf('bc', 2), -1);
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assert.equal(b.indexOf('bc', -1), -1);
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assert.equal(b.indexOf('bc', -3), -1);
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assert.equal(b.indexOf('bc', -5), 1);
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assert.equal(b.indexOf('bc', NaN), 1);
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assert.equal(b.indexOf('bc', -Infinity), 1);
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assert.equal(b.indexOf('bc', Infinity), -1);
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assert.equal(b.indexOf('f'), b.length - 1);
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assert.equal(b.indexOf('z'), -1);
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assert.equal(b.indexOf(''), -1);
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assert.equal(b.indexOf('', 1), -1);
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assert.equal(b.indexOf('', b.length + 1), -1);
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assert.equal(b.indexOf('', Infinity), -1);
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assert.equal(b.indexOf(buf_a), 0);
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assert.equal(b.indexOf(buf_a, 1), -1);
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assert.equal(b.indexOf(buf_a, -1), -1);
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assert.equal(b.indexOf(buf_a, -4), -1);
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assert.equal(b.indexOf(buf_a, -b.length), 0);
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assert.equal(b.indexOf(buf_a, NaN), 0);
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assert.equal(b.indexOf(buf_a, -Infinity), 0);
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assert.equal(b.indexOf(buf_a, Infinity), -1);
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assert.equal(b.indexOf(buf_bc), 1);
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assert.equal(b.indexOf(buf_bc, 2), -1);
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assert.equal(b.indexOf(buf_bc, -1), -1);
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assert.equal(b.indexOf(buf_bc, -3), -1);
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assert.equal(b.indexOf(buf_bc, -5), 1);
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assert.equal(b.indexOf(buf_bc, NaN), 1);
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assert.equal(b.indexOf(buf_bc, -Infinity), 1);
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assert.equal(b.indexOf(buf_bc, Infinity), -1);
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assert.equal(b.indexOf(buf_f), b.length - 1);
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assert.equal(b.indexOf(buf_z), -1);
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assert.equal(b.indexOf(buf_empty), -1);
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assert.equal(b.indexOf(buf_empty, 1), -1);
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assert.equal(b.indexOf(buf_empty, b.length + 1), -1);
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assert.equal(b.indexOf(buf_empty, Infinity), -1);
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assert.equal(b.indexOf(0x61), 0);
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assert.equal(b.indexOf(0x61, 1), -1);
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assert.equal(b.indexOf(0x61, -1), -1);
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assert.equal(b.indexOf(0x61, -4), -1);
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assert.equal(b.indexOf(0x61, -b.length), 0);
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assert.equal(b.indexOf(0x61, NaN), 0);
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assert.equal(b.indexOf(0x61, -Infinity), 0);
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assert.equal(b.indexOf(0x61, Infinity), -1);
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assert.equal(b.indexOf(0x0), -1);
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// test offsets
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assert.equal(b.indexOf('d', 2), 3);
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assert.equal(b.indexOf('f', 5), 5);
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assert.equal(b.indexOf('f', -1), 5);
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assert.equal(b.indexOf('f', 6), -1);
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assert.equal(b.indexOf(Buffer.from('d'), 2), 3);
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assert.equal(b.indexOf(Buffer.from('f'), 5), 5);
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assert.equal(b.indexOf(Buffer.from('f'), -1), 5);
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assert.equal(b.indexOf(Buffer.from('f'), 6), -1);
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assert.equal(Buffer.from('ff').indexOf(Buffer.from('f'), 1, 'ucs2'), -1);
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// test hex encoding
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assert.equal(
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Buffer.from(b.toString('hex'), 'hex')
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.indexOf('64', 0, 'hex'), 3);
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assert.equal(
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Buffer.from(b.toString('hex'), 'hex')
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.indexOf(Buffer.from('64', 'hex'), 0, 'hex'), 3);
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// test base64 encoding
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assert.equal(
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Buffer.from(b.toString('base64'), 'base64')
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.indexOf('ZA==', 0, 'base64'), 3);
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assert.equal(
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Buffer.from(b.toString('base64'), 'base64')
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.indexOf(Buffer.from('ZA==', 'base64'), 0, 'base64'), 3);
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// test ascii encoding
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assert.equal(
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Buffer.from(b.toString('ascii'), 'ascii')
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.indexOf('d', 0, 'ascii'), 3);
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assert.equal(
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Buffer.from(b.toString('ascii'), 'ascii')
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.indexOf(Buffer.from('d', 'ascii'), 0, 'ascii'), 3);
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// test binary encoding
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assert.equal(
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Buffer.from(b.toString('binary'), 'binary')
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.indexOf('d', 0, 'binary'), 3);
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assert.equal(
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Buffer.from(b.toString('binary'), 'binary')
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.indexOf(Buffer.from('d', 'binary'), 0, 'binary'), 3);
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assert.equal(
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Buffer.from('aa\u00e8aa', 'binary')
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.indexOf('\u00e8', 'binary'), 2);
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assert.equal(
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Buffer.from('\u00e8', 'binary')
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.indexOf('\u00e8', 'binary'), 0);
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assert.equal(
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Buffer.from('\u00e8', 'binary')
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.indexOf(Buffer.from('\u00e8', 'binary'), 'binary'), 0);
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// test optional offset with passed encoding
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assert.equal(Buffer.from('aaaa0').indexOf('30', 'hex'), 4);
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assert.equal(Buffer.from('aaaa00a').indexOf('3030', 'hex'), 4);
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{
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// test usc2 encoding
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const twoByteString = Buffer.from('\u039a\u0391\u03a3\u03a3\u0395', 'ucs2');
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assert.equal(8, twoByteString.indexOf('\u0395', 4, 'ucs2'));
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assert.equal(6, twoByteString.indexOf('\u03a3', -4, 'ucs2'));
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assert.equal(4, twoByteString.indexOf('\u03a3', -6, 'ucs2'));
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assert.equal(4, twoByteString.indexOf(
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Buffer.from('\u03a3', 'ucs2'), -6, 'ucs2'));
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assert.equal(-1, twoByteString.indexOf('\u03a3', -2, 'ucs2'));
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}
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var mixedByteStringUcs2 =
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Buffer.from('\u039a\u0391abc\u03a3\u03a3\u0395', 'ucs2');
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assert.equal(6, mixedByteStringUcs2.indexOf('bc', 0, 'ucs2'));
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assert.equal(10, mixedByteStringUcs2.indexOf('\u03a3', 0, 'ucs2'));
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assert.equal(-1, mixedByteStringUcs2.indexOf('\u0396', 0, 'ucs2'));
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assert.equal(
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6, mixedByteStringUcs2.indexOf(Buffer.from('bc', 'ucs2'), 0, 'ucs2'));
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assert.equal(
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10, mixedByteStringUcs2.indexOf(Buffer.from('\u03a3', 'ucs2'), 0, 'ucs2'));
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assert.equal(
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-1, mixedByteStringUcs2.indexOf(Buffer.from('\u0396', 'ucs2'), 0, 'ucs2'));
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{
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const twoByteString = Buffer.from('\u039a\u0391\u03a3\u03a3\u0395', 'ucs2');
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// Test single char pattern
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assert.equal(0, twoByteString.indexOf('\u039a', 0, 'ucs2'));
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assert.equal(2, twoByteString.indexOf('\u0391', 0, 'ucs2'), 'Alpha');
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assert.equal(4, twoByteString.indexOf('\u03a3', 0, 'ucs2'), 'First Sigma');
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assert.equal(6, twoByteString.indexOf('\u03a3', 6, 'ucs2'), 'Second Sigma');
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assert.equal(8, twoByteString.indexOf('\u0395', 0, 'ucs2'), 'Epsilon');
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assert.equal(-1, twoByteString.indexOf('\u0392', 0, 'ucs2'), 'Not beta');
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// Test multi-char pattern
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assert.equal(
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0, twoByteString.indexOf('\u039a\u0391', 0, 'ucs2'), 'Lambda Alpha');
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assert.equal(
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2, twoByteString.indexOf('\u0391\u03a3', 0, 'ucs2'), 'Alpha Sigma');
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assert.equal(
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4, twoByteString.indexOf('\u03a3\u03a3', 0, 'ucs2'), 'Sigma Sigma');
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assert.equal(
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6, twoByteString.indexOf('\u03a3\u0395', 0, 'ucs2'), 'Sigma Epsilon');
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}
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var mixedByteStringUtf8 = Buffer.from('\u039a\u0391abc\u03a3\u03a3\u0395');
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assert.equal(5, mixedByteStringUtf8.indexOf('bc'));
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assert.equal(5, mixedByteStringUtf8.indexOf('bc', 5));
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assert.equal(5, mixedByteStringUtf8.indexOf('bc', -8));
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assert.equal(7, mixedByteStringUtf8.indexOf('\u03a3'));
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assert.equal(-1, mixedByteStringUtf8.indexOf('\u0396'));
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// Test complex string indexOf algorithms. Only trigger for long strings.
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// Long string that isn't a simple repeat of a shorter string.
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var longString = 'A';
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for (let i = 66; i < 76; i++) { // from 'B' to 'K'
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longString = longString + String.fromCharCode(i) + longString;
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}
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var longBufferString = Buffer.from(longString);
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// pattern of 15 chars, repeated every 16 chars in long
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var pattern = 'ABACABADABACABA';
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for (let i = 0; i < longBufferString.length - pattern.length; i += 7) {
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const index = longBufferString.indexOf(pattern, i);
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assert.equal((i + 15) & ~0xf, index, 'Long ABACABA...-string at index ' + i);
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}
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assert.equal(510, longBufferString.indexOf('AJABACA'), 'Long AJABACA, First J');
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assert.equal(
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1534, longBufferString.indexOf('AJABACA', 511), 'Long AJABACA, Second J');
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pattern = 'JABACABADABACABA';
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assert.equal(
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511, longBufferString.indexOf(pattern), 'Long JABACABA..., First J');
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assert.equal(
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1535, longBufferString.indexOf(pattern, 512), 'Long JABACABA..., Second J');
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// Search for a non-ASCII string in a pure ASCII string.
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var asciiString = Buffer.from(
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'arglebargleglopglyfarglebargleglopglyfarglebargleglopglyf');
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assert.equal(-1, asciiString.indexOf('\x2061'));
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assert.equal(3, asciiString.indexOf('leb', 0));
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// Search in string containing many non-ASCII chars.
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var allCodePoints = [];
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for (let i = 0; i < 65536; i++) allCodePoints[i] = i;
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var allCharsString = String.fromCharCode.apply(String, allCodePoints);
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var allCharsBufferUtf8 = Buffer.from(allCharsString);
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var allCharsBufferUcs2 = Buffer.from(allCharsString, 'ucs2');
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// Search for string long enough to trigger complex search with ASCII pattern
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// and UC16 subject.
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assert.equal(-1, allCharsBufferUtf8.indexOf('notfound'));
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assert.equal(-1, allCharsBufferUcs2.indexOf('notfound'));
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{
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// Find substrings in Utf8.
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const lengths = [1, 3, 15]; // Single char, simple and complex.
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const indices = [0x5, 0x60, 0x400, 0x680, 0x7ee, 0xFF02, 0x16610, 0x2f77b];
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for (let lengthIndex = 0; lengthIndex < lengths.length; lengthIndex++) {
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for (let i = 0; i < indices.length; i++) {
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const index = indices[i];
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let length = lengths[lengthIndex];
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if (index + length > 0x7F) {
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length = 2 * length;
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}
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if (index + length > 0x7FF) {
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length = 3 * length;
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}
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if (index + length > 0xFFFF) {
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length = 4 * length;
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}
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var patternBufferUtf8 = allCharsBufferUtf8.slice(index, index + length);
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assert.equal(index, allCharsBufferUtf8.indexOf(patternBufferUtf8));
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var patternStringUtf8 = patternBufferUtf8.toString();
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assert.equal(index, allCharsBufferUtf8.indexOf(patternStringUtf8));
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}
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}
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}
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{
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// Find substrings in Usc2.
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const lengths = [2, 4, 16]; // Single char, simple and complex.
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const indices = [0x5, 0x65, 0x105, 0x205, 0x285, 0x2005, 0x2085, 0xfff0];
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for (let lengthIndex = 0; lengthIndex < lengths.length; lengthIndex++) {
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for (let i = 0; i < indices.length; i++) {
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const index = indices[i] * 2;
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const length = lengths[lengthIndex];
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var patternBufferUcs2 =
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allCharsBufferUcs2.slice(index, index + length);
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assert.equal(
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index, allCharsBufferUcs2.indexOf(patternBufferUcs2, 0, 'ucs2'));
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var patternStringUcs2 = patternBufferUcs2.toString('ucs2');
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assert.equal(
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index, allCharsBufferUcs2.indexOf(patternStringUcs2, 0, 'ucs2'));
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}
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}
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}
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assert.throws(function() {
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b.indexOf(function() { });
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});
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assert.throws(function() {
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b.indexOf({});
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});
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assert.throws(function() {
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b.indexOf([]);
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});
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