75 lines
2.3 KiB
JavaScript
75 lines
2.3 KiB
JavaScript
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function makeTempFile(prefix)
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{
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var file = Components.classes["@mozilla.org/file/directory_service;1"]
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.getService(Components.interfaces.nsIProperties)
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.get("TmpD", Components.interfaces.nsIFile);
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file.append(prefix || "xulrunner");
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file.createUnique(Components.interfaces.nsIFile.NORMAL_FILE_TYPE, 0664);
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return file;
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}
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function writeToFile(file, data)
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{
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// file is nsIFile, data is a string
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var foStream = Components.classes["@mozilla.org/network/file-output-stream;1"]
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.createInstance(Components.interfaces.nsIFileOutputStream);
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// use 0x02 | 0x10 to open file for appending.
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foStream.init(file, 0x02 | 0x08 | 0x20, 0664, 0); // write, create, truncate
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foStream.write(data, data.length);
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foStream.close();
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}
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function readFromFile(file)
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{
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// |file| is nsIFile
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var data = "";
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var fstream = Components.classes["@mozilla.org/network/file-input-stream;1"]
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.createInstance(Components.interfaces.nsIFileInputStream);
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var sstream = Components.classes["@mozilla.org/scriptableinputstream;1"]
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.createInstance(Components.interfaces.nsIScriptableInputStream);
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fstream.init(file, -1, 0, 0);
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sstream.init(fstream);
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var str = sstream.read(4096);
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while (str.length > 0) {
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data += str;
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str = sstream.read(4096);
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}
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sstream.close();
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fstream.close();
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return data;
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}
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function runProgram(commandLine)
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{
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// create an nsILocalFile for the executable
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var file = Components.classes["@mozilla.org/file/local;1"]
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.createInstance(Components.interfaces.nsILocalFile);
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file.initWithPath("/bin/sh");
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// create an nsIProcess
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var process = Components.classes["@mozilla.org/process/util;1"]
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.createInstance(Components.interfaces.nsIProcess);
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process.init(file);
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// Run the process.
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// If first param is true, calling thread will be blocked until
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// called process terminates.
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// Second and third params are used to pass command-line arguments
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// to the process.
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var args = ["-c", commandLine];
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process.run(true, args, args.length);
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}
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// only for testing...
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function testIO()
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{
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var f = makeTempFile();
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writeToFile(f, "essai\ntest");
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alert(readFromFile(f));
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runProgram("zenity --info");
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}
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