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401 lines
11 KiB
401 lines
11 KiB
4 years ago
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'use strict';
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var test = require('tape')
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var bindexOf = require('../')
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var b = new Buffer('abcdef');
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var buf_a = new Buffer('a');
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var buf_bc = new Buffer('bc');
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var buf_f = new Buffer('f');
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var buf_z = new Buffer('z');
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var buf_empty = new Buffer('');
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test('node 6 buffer indexOf tests', function(t) {
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t.equal(bindexOf(b, 'a'), 0);
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t.equal(bindexOf(b, 'a', 1), -1);
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t.equal(bindexOf(b, 'a', -1), -1);
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t.equal(bindexOf(b, 'a', -4), -1);
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t.equal(bindexOf(b, 'a', -b.length), 0);
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t.equal(bindexOf(b, 'a', NaN), 0);
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t.equal(bindexOf(b, 'a', -Infinity), 0);
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t.equal(bindexOf(b, 'a', Infinity), -1);
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t.equal(bindexOf(b, 'bc'), 1);
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t.equal(bindexOf(b, 'bc', 2), -1);
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t.equal(bindexOf(b, 'bc', -1), -1);
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t.equal(bindexOf(b, 'bc', -3), -1);
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t.equal(bindexOf(b, 'bc', -5), 1);
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t.equal(bindexOf(b, 'bc', NaN), 1);
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t.equal(bindexOf(b, 'bc', -Infinity), 1);
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t.equal(bindexOf(b, 'bc', Infinity), -1);
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t.equal(bindexOf(b, 'f'), b.length - 1);
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t.equal(bindexOf(b, 'z'), -1);
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t.equal(bindexOf(b, ''), -1);
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t.equal(bindexOf(b, '', 1), -1);
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t.equal(bindexOf(b, '', b.length + 1), -1);
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t.equal(bindexOf(b, '', Infinity), -1);
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t.equal(bindexOf(b, buf_a), 0);
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t.equal(bindexOf(b, buf_a, 1), -1);
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t.equal(bindexOf(b, buf_a, -1), -1);
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t.equal(bindexOf(b, buf_a, -4), -1);
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t.equal(bindexOf(b, buf_a, -b.length), 0);
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t.equal(bindexOf(b, buf_a, NaN), 0);
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t.equal(bindexOf(b, buf_a, -Infinity), 0);
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t.equal(bindexOf(b, buf_a, Infinity), -1);
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t.equal(bindexOf(b, buf_bc), 1);
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t.equal(bindexOf(b, buf_bc, 2), -1);
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t.equal(bindexOf(b, buf_bc, -1), -1);
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t.equal(bindexOf(b, buf_bc, -3), -1);
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t.equal(bindexOf(b, buf_bc, -5), 1);
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t.equal(bindexOf(b, buf_bc, NaN), 1);
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t.equal(bindexOf(b, buf_bc, -Infinity), 1);
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t.equal(bindexOf(b, buf_bc, Infinity), -1);
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t.equal(bindexOf(b, buf_f), b.length - 1);
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t.equal(bindexOf(b, buf_z), -1);
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t.equal(bindexOf(b, buf_empty), -1);
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t.equal(bindexOf(b, buf_empty, 1), -1);
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t.equal(bindexOf(b, buf_empty, b.length + 1), -1);
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t.equal(bindexOf(b, buf_empty, Infinity), -1);
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t.equal(bindexOf(b, 0x61), 0);
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t.equal(bindexOf(b, 0x61, 1), -1);
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t.equal(bindexOf(b, 0x61, -1), -1);
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t.equal(bindexOf(b, 0x61, -4), -1);
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t.equal(bindexOf(b, 0x61, -b.length), 0);
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t.equal(bindexOf(b, 0x61, NaN), 0);
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t.equal(bindexOf(b, 0x61, -Infinity), 0);
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t.equal(bindexOf(b, 0x61, Infinity), -1);
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t.equal(bindexOf(b, 0x0), -1);
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// test offsets
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t.equal(bindexOf(b, 'd', 2), 3);
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t.equal(bindexOf(b, 'f', 5), 5);
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t.equal(bindexOf(b, 'f', -1), 5);
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t.equal(bindexOf(b, 'f', 6), -1);
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t.equal(bindexOf(b, new Buffer('d'), 2), 3);
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t.equal(bindexOf(b, new Buffer('f'), 5), 5);
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t.equal(bindexOf(b, new Buffer('f'), -1), 5);
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t.equal(bindexOf(b, new Buffer('f'), 6), -1);
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// This one doesn't make any sense
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// t.equal(bindexOf(new Buffer('ff'), new Buffer('f'), 1, 'ucs2'), -1);
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// test hex encoding
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t.equal(
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bindexOf(
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new Buffer(b.toString('hex'), 'hex'),
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'64',
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0,
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'hex'
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),
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3
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);
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t.equal(
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bindexOf(
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new Buffer(b.toString('hex'), 'hex'),
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new Buffer('64', 'hex'), 0, 'hex'
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),
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3
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);
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// test base64 encoding
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t.equal(
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bindexOf(
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new Buffer(b.toString('base64'), 'base64'),
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'ZA==', 0, 'base64'
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),
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3
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);
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t.equal(
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bindexOf(
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new Buffer(b.toString('base64'), 'base64'),
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new Buffer('ZA==', 'base64'), 0, 'base64'
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),
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3
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);
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// test ascii encoding
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t.equal(
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bindexOf(
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new Buffer(b.toString('ascii'), 'ascii'),
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'd', 0, 'ascii'
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),
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3
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);
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t.equal(
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bindexOf(
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new Buffer(b.toString('ascii'), 'ascii'),
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new Buffer('d', 'ascii'), 0, 'ascii'
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),
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3
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);
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// test latin1 encoding
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// does not work in LTS
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/*
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t.equal(
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bindexOf(
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new Buffer(b.toString('latin1'), 'latin1'),
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'd',
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0,
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'latin1'
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),
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3
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);
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t.equal(
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bindexOf(
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new Buffer(b.toString('latin1'), 'latin1'),
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new Buffer('d', 'latin1'),
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0,
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'latin1'
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),
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3
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);
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t.equal(
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bindexOf(
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new Buffer('aa\u00e8aa', 'latin1'),
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'\u00e8',
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'latin1'
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),
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2
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);
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t.equal(
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bindexOf(
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new Buffer('\u00e8', 'latin1'),
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'\u00e8',
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'latin1'
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),
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0
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);
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t.equal(
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bindexOf(
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new Buffer('\u00e8', 'latin1'),
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new Buffer('\u00e8', 'latin1'),
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0,
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'latin1'
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),
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0
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);
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*/
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// test binary encoding
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t.equal(
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bindexOf(
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new Buffer(b.toString('binary'), 'binary'),
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'd',
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0,
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'binary'
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),
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3
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);
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t.equal(
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bindexOf(
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new Buffer(b.toString('binary'), 'binary'),
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new Buffer('d', 'binary'),
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0,
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'binary'
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),
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3
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);
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t.equal(
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bindexOf(
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new Buffer('aa\u00e8aa', 'binary'),
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'\u00e8',
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0,
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'binary'
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),
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2
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);
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t.equal(
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bindexOf(
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new Buffer('\u00e8', 'binary'),
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'\u00e8',
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0,
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'binary'
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),
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0
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);
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t.equal(
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bindexOf(
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new Buffer('\u00e8', 'binary'),
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new Buffer('\u00e8', 'binary'),
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0,
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'binary'
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),
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0
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);
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// test optional offset with passed encoding
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t.equal(new Buffer('aaaa0').indexOf('30', 'hex'), 4);
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t.equal(new Buffer('aaaa00a').indexOf('3030', 'hex'), 4);
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{
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// test usc2 encoding
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var twoByteString = new Buffer('\u039a\u0391\u03a3\u03a3\u0395', 'ucs2');
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t.equal(8, twoByteString.indexOf('\u0395', 4, 'ucs2'));
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t.equal(6, twoByteString.indexOf('\u03a3', -4, 'ucs2'));
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t.equal(4, twoByteString.indexOf('\u03a3', -6, 'ucs2'));
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t.equal(4, twoByteString.indexOf(
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new Buffer('\u03a3', 'ucs2'), -6, 'ucs2'));
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t.equal(-1, twoByteString.indexOf('\u03a3', -2, 'ucs2'));
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}
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var mixedByteStringUcs2 =
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new Buffer('\u039a\u0391abc\u03a3\u03a3\u0395', 'ucs2');
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t.equal(6, mixedByteStringUcs2.indexOf('bc', 0, 'ucs2'));
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t.equal(10, mixedByteStringUcs2.indexOf('\u03a3', 0, 'ucs2'));
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t.equal(-1, mixedByteStringUcs2.indexOf('\u0396', 0, 'ucs2'));
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t.equal(
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6, mixedByteStringUcs2.indexOf(new Buffer('bc', 'ucs2'), 0, 'ucs2'));
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t.equal(
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10, mixedByteStringUcs2.indexOf(new Buffer('\u03a3', 'ucs2'), 0, 'ucs2'));
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t.equal(
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-1, mixedByteStringUcs2.indexOf(new Buffer('\u0396', 'ucs2'), 0, 'ucs2'));
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{
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var twoByteString = new Buffer('\u039a\u0391\u03a3\u03a3\u0395', 'ucs2');
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// Test single char pattern
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t.equal(0, twoByteString.indexOf('\u039a', 0, 'ucs2'));
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t.equal(2, twoByteString.indexOf('\u0391', 0, 'ucs2'), 'Alpha');
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t.equal(4, twoByteString.indexOf('\u03a3', 0, 'ucs2'), 'First Sigma');
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t.equal(6, twoByteString.indexOf('\u03a3', 6, 'ucs2'), 'Second Sigma');
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t.equal(8, twoByteString.indexOf('\u0395', 0, 'ucs2'), 'Epsilon');
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t.equal(-1, twoByteString.indexOf('\u0392', 0, 'ucs2'), 'Not beta');
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// Test multi-char pattern
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t.equal(
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0, twoByteString.indexOf('\u039a\u0391', 0, 'ucs2'), 'Lambda Alpha');
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t.equal(
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2, twoByteString.indexOf('\u0391\u03a3', 0, 'ucs2'), 'Alpha Sigma');
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t.equal(
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4, twoByteString.indexOf('\u03a3\u03a3', 0, 'ucs2'), 'Sigma Sigma');
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t.equal(
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6, twoByteString.indexOf('\u03a3\u0395', 0, 'ucs2'), 'Sigma Epsilon');
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}
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var mixedByteStringUtf8 = new Buffer('\u039a\u0391abc\u03a3\u03a3\u0395');
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t.equal(5, mixedByteStringUtf8.indexOf('bc'));
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t.equal(5, mixedByteStringUtf8.indexOf('bc', 5));
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t.equal(5, mixedByteStringUtf8.indexOf('bc', -8));
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t.equal(7, mixedByteStringUtf8.indexOf('\u03a3'));
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t.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 (var 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 = new Buffer(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 (var i = 0; i < longBufferString.length - pattern.length; i += 7) {
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var index = longBufferString.indexOf(pattern, i);
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t.equal((i + 15) & ~0xf, index, 'Long ABACABA...-string at index ' + i);
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}
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t.equal(510, longBufferString.indexOf('AJABACA'), 'Long AJABACA, First J');
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t.equal(
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1534, longBufferString.indexOf('AJABACA', 511), 'Long AJABACA, Second J');
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pattern = 'JABACABADABACABA';
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t.equal(
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511, longBufferString.indexOf(pattern), 'Long JABACABA..., First J');
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t.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 = new Buffer(
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'arglebargleglopglyfarglebargleglopglyfarglebargleglopglyf');
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t.equal(-1, asciiString.indexOf('\x2061'));
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t.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 (var 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 = new Buffer(allCharsString);
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var allCharsBufferUcs2 = new Buffer(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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t.equal(-1, allCharsBufferUtf8.indexOf('notfound'));
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t.equal(-1, allCharsBufferUcs2.indexOf('notfound'));
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// Needle is longer than haystack, but only because it's encoded as UTF-16
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t.equal(new Buffer('aaaa').indexOf('a'.repeat(4), 'ucs2'), -1);
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t.equal(new Buffer('aaaa').indexOf('a'.repeat(4), 'utf8'), 0);
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t.equal(new Buffer('aaaa').indexOf('你好', 'ucs2'), -1);
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// Haystack has odd length, but the needle is UCS2.
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t.equal(new Buffer('aaaaa').indexOf('b', 'ucs2'), -1);
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{
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// Find substrings in Utf8.
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var lengths = [1, 3, 15]; // Single char, simple and complex.
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var indices = [0x5, 0x60, 0x400, 0x680, 0x7ee, 0xFF02, 0x16610, 0x2f77b];
|
||
|
|
for (var lengthIndex = 0; lengthIndex < lengths.length; lengthIndex++) {
|
||
|
|
for (var i = 0; i < indices.length; i++) {
|
||
|
|
var index = indices[i];
|
||
|
|
var length = lengths[lengthIndex];
|
||
|
|
|
||
|
|
if (index + length > 0x7F) {
|
||
|
|
length = 2 * length;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (index + length > 0x7FF) {
|
||
|
|
length = 3 * length;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (index + length > 0xFFFF) {
|
||
|
|
length = 4 * length;
|
||
|
|
}
|
||
|
|
|
||
|
|
var patternBufferUtf8 = allCharsBufferUtf8.slice(index, index + length);
|
||
|
|
t.equal(index, allCharsBufferUtf8.indexOf(patternBufferUtf8));
|
||
|
|
|
||
|
|
var patternStringUtf8 = patternBufferUtf8.toString();
|
||
|
|
t.equal(index, allCharsBufferUtf8.indexOf(patternStringUtf8));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
// Find substrings in Usc2.
|
||
|
|
var lengths = [2, 4, 16]; // Single char, simple and complex.
|
||
|
|
var indices = [0x5, 0x65, 0x105, 0x205, 0x285, 0x2005, 0x2085, 0xfff0];
|
||
|
|
for (var lengthIndex = 0; lengthIndex < lengths.length; lengthIndex++) {
|
||
|
|
for (var i = 0; i < indices.length; i++) {
|
||
|
|
var index = indices[i] * 2;
|
||
|
|
var length = lengths[lengthIndex];
|
||
|
|
|
||
|
|
var patternBufferUcs2 =
|
||
|
|
allCharsBufferUcs2.slice(index, index + length);
|
||
|
|
t.equal(
|
||
|
|
index, allCharsBufferUcs2.indexOf(patternBufferUcs2, 0, 'ucs2'));
|
||
|
|
|
||
|
|
var patternStringUcs2 = patternBufferUcs2.toString('ucs2');
|
||
|
|
t.equal(
|
||
|
|
index, allCharsBufferUcs2.indexOf(patternStringUcs2, 0, 'ucs2'));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
t.throws(function() {
|
||
|
|
bindexOf(b, function() { });
|
||
|
|
});
|
||
|
|
t.throws(function() {
|
||
|
|
bindexOf(b, {});
|
||
|
|
});
|
||
|
|
t.throws(function() {
|
||
|
|
bindexOf(b, []);
|
||
|
|
});
|
||
|
|
|
||
|
|
|
||
|
|
t.end();
|
||
|
|
});
|