RetroZilla/extensions/venkman/resources/content/file-utils.js

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2015-10-21 05:03:22 +02:00
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is The JavaScript Debugger.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Robert Ginda, <rginda@netscape.com>, original author
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* notice that these valuse are octal. */
const PERM_IRWXU = 00700; /* read, write, execute/search by owner */
const PERM_IRUSR = 00400; /* read permission, owner */
const PERM_IWUSR = 00200; /* write permission, owner */
const PERM_IXUSR = 00100; /* execute/search permission, owner */
const PERM_IRWXG = 00070; /* read, write, execute/search by group */
const PERM_IRGRP = 00040; /* read permission, group */
const PERM_IWGRP = 00020; /* write permission, group */
const PERM_IXGRP = 00010; /* execute/search permission, group */
const PERM_IRWXO = 00007; /* read, write, execute/search by others */
const PERM_IROTH = 00004; /* read permission, others */
const PERM_IWOTH = 00002; /* write permission, others */
const PERM_IXOTH = 00001; /* execute/search permission, others */
const MODE_RDONLY = 0x01;
const MODE_WRONLY = 0x02;
const MODE_RDWR = 0x04;
const MODE_CREATE = 0x08;
const MODE_APPEND = 0x10;
const MODE_TRUNCATE = 0x20;
const MODE_SYNC = 0x40;
const MODE_EXCL = 0x80;
const PICK_OK = Components.interfaces.nsIFilePicker.returnOK;
const PICK_CANCEL = Components.interfaces.nsIFilePicker.returnCancel;
const PICK_REPLACE = Components.interfaces.nsIFilePicker.returnReplace;
const FILTER_ALL = Components.interfaces.nsIFilePicker.filterAll;
const FILTER_HTML = Components.interfaces.nsIFilePicker.filterHTML;
const FILTER_TEXT = Components.interfaces.nsIFilePicker.filterText;
const FILTER_IMAGES = Components.interfaces.nsIFilePicker.filterImages;
const FILTER_XML = Components.interfaces.nsIFilePicker.filterXML;
const FILTER_XUL = Components.interfaces.nsIFilePicker.filterXUL;
// evald f = fopen("/home/rginda/foo.txt", MODE_WRONLY | MODE_CREATE)
// evald f = fopen("/home/rginda/vnk.txt", MODE_RDONLY)
var futils = new Object();
futils.umask = PERM_IWOTH | PERM_IWGRP;
futils.MSG_SAVE_AS = "Save As";
futils.MSG_OPEN = "Open";
futils.getPicker =
function futils_nosepicker(initialPath, typeList, attribs)
{
const classes = Components.classes;
const interfaces = Components.interfaces;
const PICKER_CTRID = "@mozilla.org/filepicker;1";
const LOCALFILE_CTRID = "@mozilla.org/file/local;1";
const nsIFilePicker = interfaces.nsIFilePicker;
const nsILocalFile = interfaces.nsILocalFile;
var picker = classes[PICKER_CTRID].createInstance(nsIFilePicker);
if (typeof attribs == "object")
{
for (var a in attribs)
picker[a] = attribs[a];
}
else
throw "bad type for param |attribs|";
if (initialPath)
{
var localFile;
if (typeof initialPath == "string")
{
localFile =
classes[LOCALFILE_CTRID].createInstance(nsILocalFile);
localFile.initWithPath(initialPath);
}
else
{
if (!(initialPath instanceof nsILocalFile))
throw "bad type for argument |initialPath|";
localFile = initialPath;
}
picker.displayDirectory = localFile
}
if (typeof typeList == "string")
typeList = typeList.split(" ");
if (typeList instanceof Array)
{
for (var i in typeList)
{
switch (typeList[i])
{
case "$all":
picker.appendFilters(FILTER_ALL);
break;
case "$html":
picker.appendFilters(FILTER_HTML);
break;
case "$text":
picker.appendFilters(FILTER_TEXT);
break;
case "$images":
picker.appendFilters(FILTER_IMAGES);
break;
case "$xml":
picker.appendFilters(FILTER_XML);
break;
case "$xul":
picker.appendFilters(FILTER_XUL);
break;
default:
picker.appendFilter(typeList[i], typeList[i]);
break;
}
}
}
return picker;
}
function pickSaveAs (title, typeList, defaultFile, defaultDir)
{
if (!defaultDir && "lastSaveAsDir" in futils)
defaultDir = futils.lastSaveAsDir;
var picker = futils.getPicker (defaultDir, typeList,
{defaultString: defaultFile});
picker.init (window, title ? title : futils.MSG_SAVE_AS,
Components.interfaces.nsIFilePicker.modeSave);
var reason = PICK_CANCEL;
try
{
reason = picker.show();
}
catch (ex)
{
dd ("caught exception from file picker: " + ex);
}
var obj = new Object();
obj.reason = reason;
obj.picker = picker;
if (reason != PICK_CANCEL)
{
obj.file = picker.file;
futils.lastSaveAsDir = picker.file.parent;
}
else
{
obj.file = null;
}
return obj;
}
function pickOpen (title, typeList, defaultFile, defaultDir)
{
if (!defaultDir && "lastOpenDir" in futils)
defaultDir = futils.lastOpenDir;
var picker = futils.getPicker (defaultDir, typeList,
{defaultString: defaultFile});
picker.init (window, title ? title : futils.MSG_OPEN,
Components.interfaces.nsIFilePicker.modeOpen);
var rv = PICK_CANCEL;
try
{
rv = picker.show();
}
catch (ex)
{
dd ("caught exception from file picker: " + ex);
}
if (rv != PICK_CANCEL)
futils.lastOpenDir = picker.file.parent;
return {reason: rv, file: picker.file, picker: picker};
}
function fopen (path, mode, perms, tmp)
{
return new LocalFile(path, mode, perms, tmp);
}
function LocalFile(file, mode, perms, tmp)
{
const classes = Components.classes;
const interfaces = Components.interfaces;
const LOCALFILE_CTRID = "@mozilla.org/file/local;1";
const FILEIN_CTRID = "@mozilla.org/network/file-input-stream;1";
const FILEOUT_CTRID = "@mozilla.org/network/file-output-stream;1";
const SCRIPTSTREAM_CTRID = "@mozilla.org/scriptableinputstream;1";
const nsIFile = interfaces.nsIFile;
const nsILocalFile = interfaces.nsILocalFile;
const nsIFileOutputStream = interfaces.nsIFileOutputStream;
const nsIFileInputStream = interfaces.nsIFileInputStream;
const nsIScriptableInputStream = interfaces.nsIScriptableInputStream;
if (typeof perms == "undefined")
perms = 0666 & ~futils.umask;
if (typeof mode == "string")
{
switch (mode)
{
case ">":
mode = MODE_WRONLY | MODE_CREATE | MODE_TRUNCATE;
break;
case ">>":
mode = MODE_WRONLY | MODE_CREATE | MODE_APPEND;
break;
case "<":
mode = MODE_RDONLY;
break;
default:
throw "Invalid mode ``" + mode + "''";
}
}
if (typeof file == "string")
{
this.localFile = classes[LOCALFILE_CTRID].createInstance(nsILocalFile);
this.localFile.initWithPath(file);
}
else if (file instanceof nsILocalFile)
{
this.localFile = file;
}
else
{
throw "bad type for argument |file|.";
}
this.path = this.localFile.path;
if (mode & (MODE_WRONLY | MODE_RDWR))
{
this.outputStream =
classes[FILEOUT_CTRID].createInstance(nsIFileOutputStream);
this.outputStream.init(this.localFile, mode, perms, 0);
}
if (mode & (MODE_RDONLY | MODE_RDWR))
{
var is = classes[FILEIN_CTRID].createInstance(nsIFileInputStream);
is.init(this.localFile, mode, perms, tmp);
this.inputStream =
classes[SCRIPTSTREAM_CTRID].createInstance(nsIScriptableInputStream);
this.inputStream.init(is);
}
}
LocalFile.prototype.write =
function fo_write(buf)
{
if (!("outputStream" in this))
throw "file not open for writing.";
return this.outputStream.write(buf, buf.length);
}
LocalFile.prototype.read =
function fo_read(max)
{
if (!("inputStream" in this))
throw "file not open for reading.";
var av = this.inputStream.available();
if (typeof max == "undefined")
max = av;
if (!av)
return null;
var rv = this.inputStream.read(max);
return rv;
}
LocalFile.prototype.close =
function fo_close()
{
if ("outputStream" in this)
this.outputStream.close();
if ("inputStream" in this)
this.inputStream.close();
}
LocalFile.prototype.flush =
function fo_close()
{
return this.outputStream.flush();
}