Clean up the style in the ninja shell wrapper.
Use case rather than inconsistently using [ and [[.
Review URL: https://chromiumcodereview.appspot.com/11522008
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@172343 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/ninja b/ninja
index e4e710e..b9cd0d1 100755
--- a/ninja
+++ b/ninja
@@ -7,24 +7,18 @@
OS="$(uname -s)"
THIS_DIR="$(dirname "${0}")"
-if [ "${OS}" = "Linux" ]; then
- machine=$(getconf LONG_BIT)
- if [[ "$machine" = "64" ]]; then
- exec "${THIS_DIR}/ninja-linux64" "$@"
- elif [[ "$machine" = "32" ]]; then
- exec "${THIS_DIR}/ninja-linux32" "$@"
- else
- echo Unknown architecture \($machine\) -- unable to run ninja.
- exit 1
- fi
-elif [ "${OS}" = "Darwin" ]; then
- exec "${THIS_DIR}/ninja-mac" "$@"
-elif [[ ${OS} == CYGWIN* ]]; then
- exec cmd.exe /c `cygpath -t windows $0`.exe "$@"
-elif [[ ${OS} == MINGW32* ]]; then
- cmd.exe //c $0.exe "$@"
-else
- echo "Unsupported OS ${OS}"
- exit 1
-fi
-
+case "$OS" in
+ Linux)
+ MACHINE=$(getconf LONG_BIT)
+ case "$MACHINE" in
+ 32|64) exec "${THIS_DIR}/ninja-linux${MACHINE}" "$@";;
+ *) echo Unknown architecture \($MACHINE\) -- unable to run ninja.
+ exit 1;;
+ esac
+ ;;
+ Darwin) exec "${THIS_DIR}/ninja-mac" "$@";;
+ CYGWIN*) exec cmd.exe /c $(cygpath -t windows $0).exe "$@";;
+ MINGW32*) cmd.exe //c $0.exe "$@";;
+ *) echo "Unsupported OS ${OS}"
+ exit 1;;
+esac
