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Diffstat (limited to 'infrastructure/framework-src/modules/fileutils.js')
-rw-r--r-- | infrastructure/framework-src/modules/fileutils.js | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/infrastructure/framework-src/modules/fileutils.js b/infrastructure/framework-src/modules/fileutils.js new file mode 100644 index 0000000..aaf12e2 --- /dev/null +++ b/infrastructure/framework-src/modules/fileutils.js @@ -0,0 +1,108 @@ +/** + * Copyright 2009 Google Inc. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS-IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/** @fileOverview misc file functions */ + +jimport("java.io.File", + "java.io.DataInputStream", + "java.io.FileInputStream", + "java.lang.reflect.Array", + "java.lang.Byte", + "java.io.FileReader", + "java.io.BufferedReader", + "net.appjet.oui.JarVirtualFile"); + +function readFileBytes(path) { + var jfile = new JarVirtualFile(path); + if (!jfile.exists() || jfile.isDirectory()) { + throw 'Not a file: '+path; + } + return net.appjet.common.util.BetterFile.getStreamBytes(jfile.openStream()); +} + +function readFile(path) { + var bytes = readFileBytes(path); + if (bytes !== null) { + return String(new java.lang.String(bytes)); + } else { + return null; + } +} + +function fileLastModified(path) { + var jfile = new JarVirtualFile(path); + if (!jfile.exists()) { + throw "Not a file: "+path; + } + return jfile.lastModified(); +} + +//---------------------------------------------------------------- +// real files +//---------------------------------------------------------------- + +function readRealFileBytes(path) { + var jfile = new File(path); + if (!jfile.exists() || jfile.isDirectory()) { + throw 'Not a real file: '+path; + } + var jdata = new DataInputStream(new FileInputStream(jfile)); + var size = jfile.length(); + var bytes = Array.newInstance(Byte.TYPE, size); + jdata.read(bytes, 0, size); + jdata.close(); + return bytes; +} + +function readRealFile(path) { + var bytes = readRealFileBytes(path); + if (bytes !== null) { + return String(new java.lang.String(bytes)); + } else { + return null; + } +} + +function writeRealFile(path, data) { + var jf = new Packages.java.io.File(path); + var fw = new Packages.java.io.FileWriter(jf); + fw.write(data); + fw.flush(); + fw.close(); +} + + +function eachFileLine(file, fn) { + var iter = fileLineIterator(file); + while (iter.hasNext) { + fn(iter.next); + } +} + +function fileLineIterator(file) { + var reader = new BufferedReader(new FileReader(file)); + var nextLine = reader.readLine(); + return { + get hasNext() { return nextLine !== null }, + get next() { + var curLine = nextLine; + if (this.hasNext) { + nextLine = reader.readLine(); + } + return curLine; + } + }; +} |