Add tools/link.bat, unlink.bat, and copydir.bat

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5419 42af7a65-404d-4744-a932-0658087f49c3

tools/unlink.bat

@@ -0,0 +1,71 @@
+@echo off
+
+rem tools/unlink.bat
+rem
+rem   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+rem   Author: Gregory Nutt <gnutt@nuttx.org>
+rem
+rem Redistribution and use in source and binary forms, with or without
+rem modification, are permitted provided that the following conditions
+rem are met:
+rem
+rem 1. Redistributions of source code must retain the above copyright
+rem    notice, this list of conditions and the following disclaimer.
+rem 2. Redistributions in binary form must reproduce the above copyright
+rem    notice, this list of conditions and the following disclaimer in
+rem    the documentation and/or other materials provided with the
+rem    distribution.
+rem 3. Neither the name NuttX nor the names of its contributors may be
+rem    used to endorse or promote products derived from this software
+rem    without specific prior written permission.
+rem
+rem THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+rem "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+rem LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+rem FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+rem COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+rem INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+rem BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+rem OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+rem AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+rem LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+rem ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+rem POSSIBILITY OF SUCH DAMAGE.
+rem
+
+rem Verify that arguments were provided
+
+set link=%1
+if "%link%"=="" goto :MissingArgument
+
+rem Check if something already exists at the link path
+
+if exist "%link%" goto :LinkExists
+
+echo %link% does not exist
+goto :ShowUsage
+
+rem %link% make be a symbolic link or it may be a copied director (with
+rem a .fakelnk file in it).  It really does not matter which:  We do the
+rem same thing in either case
+
+:LinkExists
+
+rmdir /q /s %link%
+if errorlevel 1 (
+  echo Failed to remove existing object at %link%
+  goto :ShowUsage
+)
+
+goto :End
+
+:MissingArgument
+
+echo Missing Argument
+
+:ShowUsage
+echo USAGE: %0 ^<link^>
+echo Where:
+echo   ^<link^> is the linked (or copied) directory to be removed
+
+:End