mirror of
https://github.com/gryf/pentadactyl-pm.git
synced 2025-12-22 14:18:00 +01:00
new vimperator.io. object
This commit is contained in:
Martin Stubenschrott
353
content/io.js
353
content/io.js
@@ -27,153 +27,226 @@ the provisions above, a recipient may use your version of this file under
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the terms of any one of the MPL, the GPL or the LGPL.
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}}} ***** END LICENSE BLOCK *****/
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vimperator.io = {};
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vimperator.io.fopen = function(path, mode, perms, tmp)
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vimperator.io = (function()
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{
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return new vimperator.io.LocalFile(path, mode, perms, tmp);
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}
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var environment_service = Components.classes["@mozilla.org/process/environment;1"]
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.getService(Components.interfaces.nsIEnvironment);
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vimperator.io.LocalFile = function(file, mode, perms, tmp) // {{{
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{
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const PERM_IWOTH = 00002; /* write permission, others */
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const PERM_IWGRP = 00020; /* write permission, group */
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vimperator.log("Loading vimperator.io");
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const MODE_RDONLY = 0x01;
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const MODE_WRONLY = 0x02;
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const MODE_RDWR = 0x04;
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const MODE_CREATE = 0x08;
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const MODE_APPEND = 0x10;
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const MODE_TRUNCATE = 0x20;
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const MODE_SYNC = 0x40;
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const MODE_EXCL = 0x80;
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return {
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const classes = Components.classes;
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const interfaces = Components.interfaces;
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MODE_RDONLY: 0x01,
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MODE_WRONLY: 0x02,
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MODE_RDWR: 0x04,
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MODE_CREATE: 0x08,
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MODE_APPEND: 0x10,
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MODE_TRUNCATE: 0x20,
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MODE_SYNC: 0x40,
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MODE_EXCL: 0x80,
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const LOCALFILE_CTRID = "@mozilla.org/file/local;1";
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const FILEIN_CTRID = "@mozilla.org/network/file-input-stream;1";
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const FILEOUT_CTRID = "@mozilla.org/network/file-output-stream;1";
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const SCRIPTSTREAM_CTRID = "@mozilla.org/scriptableinputstream;1";
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const nsIFile = interfaces.nsIFile;
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const nsILocalFile = interfaces.nsILocalFile;
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const nsIFileOutputStream = interfaces.nsIFileOutputStream;
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const nsIFileInputStream = interfaces.nsIFileInputStream;
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const nsIScriptableInputStream = interfaces.nsIScriptableInputStream;
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if (typeof perms == "undefined")
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perms = 0666 & ~(PERM_IWOTH | PERM_IWGRP);
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if (typeof mode == "string")
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{
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switch (mode)
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expandPath: function(path)
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{
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case ">":
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mode = MODE_WRONLY | MODE_CREATE | MODE_TRUNCATE;
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break;
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case ">>":
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mode = MODE_WRONLY | MODE_CREATE | MODE_APPEND;
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break;
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case "<":
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mode = MODE_RDONLY;
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break;
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default:
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throw "Invalid mode ``" + mode + "''";
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const WINDOWS = navigator.platform == "Win32";
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// TODO: proper pathname separator translation like Vim
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if (WINDOWS)
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path = path.replace('/', '\\', 'g');
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// expand "~" to VIMPERATOR_HOME or HOME (USERPROFILE or HOMEDRIVE\HOMEPATH on Windows if HOME is not set)
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if (/^~/.test(path))
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{
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var home = environment_service.get("VIMPERATOR_HOME");
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if (!home)
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home = environment_service.get("HOME");
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if (WINDOWS && !home)
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home = environment_service.get("USERPROFILE") ||
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environment_service.get("HOMEDRIVE") + environment_service.get("HOMEPATH");
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path = path.replace("~", home);
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}
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// expand any $ENV vars
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var env_vars = path.match(/\$\w+\b/g); // this is naive but so is Vim and we like to be compatible
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if (env_vars)
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{
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var expansion;
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for (var i = 0; i < env_vars.length; i++)
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{
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expansion = environment_service.get(env_vars[i].replace("$", ""));
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if (expansion)
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path = path.replace(env_vars[i], expansion);
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}
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}
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return path;
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},
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// path can also be a filename, not limited to directories
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pathExists: function(path)
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{
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var p = Components.classes["@mozilla.org/file/local;1"]
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.createInstance(Components.interfaces.nsILocalFile);
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p.initWithPath(this.expandPath(path));
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return p.exists();
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},
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getPluginDir: function()
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{
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var plugin_dir;
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if (navigator.platform == "Win32")
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plugin_dir = "~/vimperator/plugin";
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else
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plugin_dir = "~/.vimperator/plugin";
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plugin_dir = this.expandPath(plugin_dir);
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return this.pathExists(plugin_dir) ? plugin_dir : null;
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},
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getRCFile: function()
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{
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var rc_file1 = this.expandPath("~/.vimperatorrc");
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var rc_file2 = this.expandPath("~/_vimperatorrc");
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if (navigator.platform == "Win32")
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[rc_file1, rc_file2] = [rc_file2, rc_file1]
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if (this.pathExists(rc_file1))
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return rc_file1;
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else if (this.pathExists(rc_file2))
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return rc_file2;
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else
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return null;
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},
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// return a nsILocalFile for path where you can call isDirectory(), etc. on
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// caller must check with .exists() if the returned file really exists
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getFile: function(path)
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{
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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(this.expandPath(path));
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return file;
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},
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// TODO: make secure
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// returns a nsILocalFile or null if it could not be created
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createTempFile: function()
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{
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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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if (navigator.platform == "Win32")
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{
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var dir = environment_service.get("TMP") || environment_service.get("TEMP") || "C:\\";
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file.initWithPath(dir + "\\vimperator.tmp");
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}
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else
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{
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var dir = environment_service.get("TMP") || environment_service.get("TEMP") || "/tmp/";
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file.initWithPath(dir + "/vimperator.tmp");
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}
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file.createUnique(Components.interfaces.nsIFile.NORMAL_FILE_TYPE, 0600);
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if (!file.exists())
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return null;
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return file;
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},
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// file is either a full pathname or an instance of file instanceof nsILocalFile
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readDirectory: function(file)
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{
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if (typeof file == "string")
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file = this.getFile(file);
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else if (!(file instanceof Components.interfaces.nsILocalFile))
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throw Components.results.NS_ERROR_INVALID_ARG; // FIXME: does not work as expected, just shows undefined: undefined
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if (file.isDirectory())
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{
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var entries = file.directoryEntries;
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var array = [];
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while (entries.hasMoreElements())
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{
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var entry = entries.getNext();
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entry.QueryInterface(Components.interfaces.nsIFile);
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array.push(entry);
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}
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return array;
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}
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else
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return []; // XXX: or should it throw an error, probably yes?
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},
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// file is either a full pathname or an instance of file instanceof nsILocalFile
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// reads a file in "text" mode and returns the string
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readFile: function(file)
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{
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var ifstream = Components.classes["@mozilla.org/network/file-input-stream;1"]
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.createInstance(Components.interfaces.nsIFileInputStream);
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var icstream = Components.classes["@mozilla.org/intl/converter-input-stream;1"]
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.createInstance(Components.interfaces.nsIConverterInputStream);
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var charset = "UTF-8";
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if (typeof file == "string")
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file = this.getFile(file);
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else if (!(file instanceof Components.interfaces.nsILocalFile))
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throw Components.results.NS_ERROR_INVALID_ARG; // FIXME: does not work as expected, just shows undefined: undefined
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ifstream.init(file, -1, 0, 0);
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const replacementChar = Components.interfaces.nsIConverterInputStream.DEFAULT_REPLACEMENT_CHARACTER;
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icstream.init(ifstream, charset, 4096, replacementChar); // 4096 bytes buffering
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var buffer = "";
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var str = {};
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while (icstream.readString(4096, str) != 0)
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buffer += str.value;
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icstream.close();
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ifstream.close();
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return buffer;
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},
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// file is either a full pathname or an instance of file instanceof nsILocalFile
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// default permission = 0644, only used when creating a new file, does not change permissions if the file exists
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// mode can be ">" or ">>" in addition to the normal MODE_* flags
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writeFile: function(file, buf, mode, perms)
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{
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var ofstream = Components.classes["@mozilla.org/network/file-output-stream;1"]
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.createInstance(Components.interfaces.nsIFileOutputStream);
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var ocstream = Components.classes["@mozilla.org/intl/converter-output-stream;1"]
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.createInstance(Components.interfaces.nsIConverterOutputStream);
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var charset = "UTF-8"; // Can be any character encoding name that Mozilla supports
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if (typeof file == "string")
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file = this.getFile(file);
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else if (!(file instanceof Components.interfaces.nsILocalFile))
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throw Components.results.NS_ERROR_INVALID_ARG; // FIXME: does not work as expected, just shows undefined: undefined
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if (mode == ">>")
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mode = this.MODE_WRONLY | this.MODE_CREATE | this.MODE_APPEND;
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else if (!mode || mode == ">")
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mode = this.MODE_WRONLY | this.MODE_CREATE | this.MODE_TRUNCATE;
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if (!perms)
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perms = 0644;
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ofstream.init(file, mode, perms, 0);
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ocstream.init(ofstream, charset, 0, 0x0000);
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ocstream.writeString(buf);
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ocstream.close();
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ofstream.close();
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}
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}
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if (typeof file == "string")
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{
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this.localFile = classes[LOCALFILE_CTRID].createInstance(nsILocalFile);
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this.localFile.initWithPath(file);
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if (!this.localFile.exists())
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throw "No such file or directory";
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}
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else if (file instanceof nsILocalFile)
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{
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this.localFile = file;
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if (!this.localFile.exists())
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throw "No such file or directory";
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}
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else
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{
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throw "bad type for argument |file|.";
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}
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this.path = this.localFile.path;
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if (mode & (MODE_WRONLY | MODE_RDWR))
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{
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this.outputStream =
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classes[FILEOUT_CTRID].createInstance(nsIFileOutputStream);
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this.outputStream.init(this.localFile, mode, perms, 0);
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}
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if (mode & (MODE_RDONLY | MODE_RDWR))
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{
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var is = classes[FILEIN_CTRID].createInstance(nsIFileInputStream);
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is.init(this.localFile, mode, perms, tmp);
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this.inputStream =
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classes[SCRIPTSTREAM_CTRID].createInstance(nsIScriptableInputStream);
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this.inputStream.init(is);
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}
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}
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vimperator.io.LocalFile.prototype.write =
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function fo_write(buf)
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{
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if (!("outputStream" in this))
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throw "file not open for writing.";
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return this.outputStream.write(buf, buf.length);
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}
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vimperator.io.LocalFile.prototype.read =
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function fo_read(max)
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{
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if (this.localFile.isDirectory())
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{
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var entries = this.localFile.directoryEntries;
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var array = [];
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while (entries.hasMoreElements())
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{
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var entry = entries.getNext();
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entry.QueryInterface(Components.interfaces.nsIFile);
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array.push(entry);
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}
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return array;
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}
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if (!("inputStream" in this))
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throw "file not open for reading.";
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var av = this.inputStream.available();
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if (typeof max == "undefined")
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max = av;
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if (!av)
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return null;
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var rv = this.inputStream.read(max);
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return rv;
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}
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vimperator.io.LocalFile.prototype.close =
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function fo_close()
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{
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if ("outputStream" in this)
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this.outputStream.close();
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if ("inputStream" in this)
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this.inputStream.close();
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}
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vimperator.io.LocalFile.prototype.flush =
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function fo_close()
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{
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return this.outputStream.flush();
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}
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//}}}
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})();
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// vim: set fdm=marker sw=4 ts=4 et:
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Reference in New Issue
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