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0803962860
These changes affect the following functions and their synchronous counterparts: * fs.readFile() * fs.writeFile() * fs.appendFile() If the first parameter is a uint32, it is treated as a file descriptor. In all other cases, the original implementation is used to ensure backwards compatibility. File descriptor ownership is never taken from the user. The documentation was adjusted to reflect these API changes. A note was added to make the user aware of file descriptor ownership and the conditions under which a file descriptor can be used by each of these functions. Tests were extended to test for file descriptor parameters under the conditions noted in the relevant documentation. PR-URL: https://github.com/nodejs/node/pull/3163 Reviewed-By: Trevor Norris <trev.norris@gmail.com>
91 lines
3.1 KiB
JavaScript
91 lines
3.1 KiB
JavaScript
'use strict';
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var common = require('../common');
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var assert = require('assert');
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var join = require('path').join;
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var fs = require('fs');
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var currentFileData = 'ABCD';
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var num = 220;
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var data = '南越国是前203年至前111年存在于岭南地区的一个国家，国都位于番禺，疆域包括今天中国的广东、' +
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'广西两省区的大部份地区，福建省、湖南、贵州、云南的一小部份地区和越南的北部。' +
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'南越国是秦朝灭亡后，由南海郡尉赵佗于前203年起兵兼并桂林郡和象郡后建立。' +
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'前196年和前179年，南越国曾先后两次名义上臣属于西汉，成为西汉的“外臣”。前112年，' +
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'南越国末代君主赵建德与西汉发生战争，被汉武帝于前111年所灭。南越国共存在93年，' +
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'历经五代君主。南越国是岭南地区的第一个有记载的政权国家，采用封建制和郡县制并存的制度，' +
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'它的建立保证了秦末乱世岭南地区社会秩序的稳定，有效的改善了岭南地区落后的政治、##济现状。\n';
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common.refreshTmpDir();
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// test that empty file will be created and have content added
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var filename = join(common.tmpDir, 'append-sync.txt');
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fs.appendFileSync(filename, data);
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var fileData = fs.readFileSync(filename);
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assert.equal(Buffer.byteLength(data), fileData.length);
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// test that appends data to a non empty file
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var filename2 = join(common.tmpDir, 'append-sync2.txt');
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fs.writeFileSync(filename2, currentFileData);
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fs.appendFileSync(filename2, data);
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var fileData2 = fs.readFileSync(filename2);
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assert.equal(Buffer.byteLength(data) + currentFileData.length,
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fileData2.length);
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// test that appendFileSync accepts buffers
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var filename3 = join(common.tmpDir, 'append-sync3.txt');
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fs.writeFileSync(filename3, currentFileData);
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var buf = new Buffer(data, 'utf8');
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fs.appendFileSync(filename3, buf);
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var fileData3 = fs.readFileSync(filename3);
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assert.equal(buf.length + currentFileData.length, fileData3.length);
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// test that appendFile accepts numbers.
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var filename4 = join(common.tmpDir, 'append-sync4.txt');
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fs.writeFileSync(filename4, currentFileData, { mode: m });
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var m = 0o600;
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fs.appendFileSync(filename4, num, { mode: m });
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// windows permissions aren't unix
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if (!common.isWindows) {
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var st = fs.statSync(filename4);
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assert.equal(st.mode & 0o700, m);
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}
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var fileData4 = fs.readFileSync(filename4);
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assert.equal(Buffer.byteLength('' + num) + currentFileData.length,
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fileData4.length);
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// test that appendFile accepts file descriptors
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var filename5 = join(common.tmpDir, 'append-sync5.txt');
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fs.writeFileSync(filename5, currentFileData);
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var filename5fd = fs.openSync(filename5, 'a+', 0o600);
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fs.appendFileSync(filename5fd, data);
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fs.closeSync(filename5fd);
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var fileData5 = fs.readFileSync(filename5);
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assert.equal(Buffer.byteLength(data) + currentFileData.length,
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fileData5.length);
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//exit logic for cleanup
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process.on('exit', function() {
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fs.unlinkSync(filename);
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fs.unlinkSync(filename2);
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fs.unlinkSync(filename3);
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fs.unlinkSync(filename4);
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fs.unlinkSync(filename5);
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});
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