99 lines
3.3 KiB
JavaScript
99 lines
3.3 KiB
JavaScript
var io = {
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openPath : function() {
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const
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nsIFilePicker = Components.interfaces.nsIFilePicker;
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var fp = Components.classes["@mozilla.org/filepicker;1"]
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.createInstance(nsIFilePicker);
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fp.init(window, "Dialog Title", nsIFilePicker.modeOpen);
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fp.appendFilters(nsIFilePicker.filterAll | nsIFilePicker.filterText);
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var rv = fp.show();
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if (rv == nsIFilePicker.returnOK || rv == nsIFilePicker.returnReplace) {
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var file = fp.file;
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// Get the path as string. Note that you usually won't
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// need to work with the string paths.
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var path = fp.file.path;
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// work with returned nsILocalFile...
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}
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return path;
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},
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appendPath : function(path, contents) {
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alert("appended File");
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var file1 = Components.classes["@mozilla.org/file/local;1"]
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.createInstance(Components.interfaces.nsILocalFile);
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file1.initWithPath(path);
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// alert("append file nullcheck: "+file1.toString());
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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(file1, 0x02 | 0x10, 438, 0);
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var converter = Components.classes["@mozilla.org/intl/converter-output-stream;1"]
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.createInstance(Components.interfaces.nsIConverterOutputStream);
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converter.init(foStream, "UTF-8", 0, 0);
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converter.writeString(contents);
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converter.close();
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},
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newPath : function(path) {
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const
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nsIFilePicker = Components.interfaces.nsIFilePicker;
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var fp = Components.classes["@mozilla.org/filepicker;1"]
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.createInstance(nsIFilePicker);
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fp.init(window, "Dialog Title", nsIFilePicker.modeSave);
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fp.appendFilters(nsIFilePicker.filterAll | nsIFilePicker.filterText);
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var rv = fp.show();
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if (rv == nsIFilePicker.returnOK || rv == nsIFilePicker.returnReplace) {
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var file = fp.file;
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// Get the path as string. Note that you usually won't
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// need to work with the string paths.
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var path = fp.file.path;
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// work with returned nsILocalFile...
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}
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return path;
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},
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createFile : function(path) {
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alert("created File");
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var file1 = Components.classes["@mozilla.org/file/local;1"]
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.createInstance(Components.interfaces.nsILocalFile);
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file1.initWithPath(path);
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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(file1, 0x02 | 0x08 | 0x20, 438, 0);
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var converter = Components.classes["@mozilla.org/intl/converter-output-stream;1"]
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.createInstance(Components.interfaces.nsIConverterOutputStream);
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converter.init(foStream, "UTF-8", 0, 0);
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converter.close(); // this closes foStream
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},
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getLine : function(path) {
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// open an input stream from file
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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(path);
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var istream = Components.classes["@mozilla.org/network/file-input-stream;1"]
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.createInstance(Components.interfaces.nsIFileInputStream);
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istream.init(file, 0x01, 0444, 0);
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istream.QueryInterface(Components.interfaces.nsILineInputStream);
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// read lines into array
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var line = {}, lines = [], hasmore;
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do {
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hasmore = istream.readLine(line);
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lines.push(line.value);
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} while (hasmore);
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istream.close();
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// do something with read data
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return lines;
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}
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}
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