103 lines
4.8 KiB
JavaScript
103 lines
4.8 KiB
JavaScript
/*
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@author David Westgate, Rylan Doherty
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@fileOverview The Input/Output functions of firerecord. Setting Path, creating files, and reading files
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*/
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var io = {
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/*
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@description sets the paths of the script
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@return path of script selected
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@see <a href="https://developer.mozilla.org/en-US/docs/XPCOM_Interface_Reference/nsIFilePicker"> Mozilla Developer Network Example </a>
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*/
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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"].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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/*
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@description appends script by contents of event click
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@see <a href="https://developer.mozilla.org/en-US/docs/Code_snippets/File_I_O"> Mozilla Developer Network Example </a>
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*/
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appendPath: function (path, contents) {
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alert("appended File");
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var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
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file.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"].createInstance(Components.interfaces.nsIFileOutputStream);
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// use 0x02 | 0x10 to open file for appending.
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foStream.init(file, 0x02 | 0x10, 438, 0);
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var converter = Components.classes["@mozilla.org/intl/converter-output-stream;1"].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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/*
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@description sets path to address of a new file
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@return path of new file
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@see <a href="https://developer.mozilla.org/en-US/docs/XPCOM_Interface_Reference/nsIFilePicker"> Mozilla Developer Network Example </a>
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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"].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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/*
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@description creates new file from path of newPath
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@see <a href="https://developer.mozilla.org/en-US/docs/Code_snippets/File_I_O"> Mozilla Developer Network Example </a>
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*/
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createFile: function (path) {
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alert("created File");
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var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
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file.initWithPath(path);
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var foStream = Components.classes["@mozilla.org/network/file-output-stream;1"].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, 438, 0);
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var converter = Components.classes["@mozilla.org/intl/converter-output-stream;1"].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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/*
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@description gets an entire script into an array, seperated by lines
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@return array of lines
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@see <a href="https://developer.mozilla.org/en-US/docs/Code_snippets/File_I_O"> Mozilla Developer Network Example </a>
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*/
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getScript: 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"].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"].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 = [],
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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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return lines;
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}
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}
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