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e92f4879eb
StringBytes::Write now uses new v8 API and also does preliminary check if the string is external, then will use external memory instead.
75 lines
2.8 KiB
JavaScript
75 lines
2.8 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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var common = require('../common');
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var assert = require('assert');
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// minimum string size to overflow into external string space
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var EXTERN_APEX = 0xFBEE9;
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// manually controlled string for checking binary output
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var ucs2_control = 'a\u0000';
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var write_str = 'a';
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// first do basic checks
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var b = new Buffer(write_str, 'ucs2');
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var c = b.toString('binary');
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assert.equal(b[0], 0x61);
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assert.equal(b[1], 0);
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assert.equal(ucs2_control, c);
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// grow the strings to proper length
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while (write_str.length <= EXTERN_APEX) {
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write_str += write_str;
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ucs2_control += ucs2_control;
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}
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write_str += write_str.substr(0, EXTERN_APEX - write_str.length);
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ucs2_control += ucs2_control.substr(0, EXTERN_APEX * 2 - ucs2_control.length);
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// check resultant buffer and output string
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var b = new Buffer(write_str, 'ucs2');
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// check fist Buffer created from write string
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for (var i = 0; i < b.length; i += 2) {
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assert.equal(b[i], 0x61);
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assert.equal(b[i + 1], 0);
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}
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// create another string to create an external string
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var b_bin = b.toString('binary');
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var b_ucs = b.toString('ucs2');
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// check control against external binary string
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assert.equal(ucs2_control, b_bin);
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// create buffer copy from external
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var c_bin = new Buffer(b_bin, 'binary');
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var c_ucs = new Buffer(b_ucs, 'ucs2');
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// make sure they're the same length
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assert.equal(c_bin.length, c_ucs.length);
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// make sure Buffers from externals are the same
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for (var i = 0; i < c_bin.length; i++) {
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assert.equal(c_bin[i], c_ucs[i], c_bin[i] + ' == ' + c_ucs[i] +
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' : index ' + i);
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}
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// check resultant strings
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assert.equal(c_bin.toString('ucs2'), c_ucs.toString('ucs2'));
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assert.equal(c_bin.toString('binary'), ucs2_control);
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assert.equal(c_ucs.toString('binary'), ucs2_control);
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