Update build.bat

build.bat

@@ -1,5 +1,25 @@
 @echo off
 
+SET DEFAULT_INSTALL_DIR=%USERPROFILE%\apps\nvim
+SET INSTALL_DIR=%DEFAULT_INSTALL_DIR%
+
+:PARSE_ARGS
+
+IF "%~1" == "" (
+	goto END_PARSE
+)
+
+IF "%~1" == "--help" (
+	ECHO Parameters:
+	ECHO 	--clean: Deletes an existing neovim directory forcing a new one to be pulled from Github
+	ECHO 	--install_dir "<directory>" Specifies that the neovim binary data will be copied to "<directory>" after its built
+	ECHO:
+	ECHO	If "<directory>" is empty of --install_dir isn't passed at all then the data will be copied to
+	ECHO	the default dir %USERPROFILE%\apps\nvim		
+
+	GOTO EXIT
+)
+
 IF "%~1" == "--clean" (
 	PUSHD ..
 	IF EXIST "neovim" (
@@ -9,6 +29,18 @@ IF "%~1" == "--clean" (
 	POPD
 )
 
+IF "%~1" == "--install_dir" (
+	IF "%~2" == "" (
+		ECHO A directory to install neovim into is required. Using Default Path %DEFAULT_INSTALL_DIR%
+		SET INSTALL_DIR=%DEFAULT_INSTALL_DIR%
+	) ELSE (
+		SET INSTALL_DIR="%~2"
+	)
+)
+SHIFT
+GOTO PARSE_ARGS
+:END_PARSE
+
 PUSHD ..
 IF NOT EXIST "neovim" (
 	git clone https://github.com/neovim/neovim.git
@@ -16,11 +48,15 @@ IF NOT EXIST "neovim" (
 
 PUSHD neovim
 
-cmake -S cmake.deps -B .deps -D CMAKE_BUILD_TYPE=Release
+cmake -S cmake.deps -B .deps
 cmake --build .deps --config Release
-cmake -S . -B build -D CMAKE_BUILD_TYPE=Release
+cmake -S . -B build
 cmake --build build --config Release
-cmake --install build --config Release --prefix "C:\Program Files\nvim"
+
+ECHO installing into %INSTALL_DIR%
+cmake --install build --config Release --prefix %INSTALL_DIR%
 
 POPD
 PUSHD get-and-build-nvim-windows
+
+:EXIT