Fix package generation script

Author: shana

Diff for: generate-package.sh

@@ -1,42 +1,91 @@
 #!/bin/sh -eu
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-if [ $# -lt 3 ]; then
-	echo "Usage: generate-package.sh [git|lfs|ghu] [windows|mac|linux] [version] [path to file] [host url (optional)] [release notes file (optional)] [message file (optional)]"
-	exit 1
-fi
 
 URL="http://ghfvs-installer.github.com"
-if [ $# -ge 5 ]; then
-	URL=$5
-fi
-
-if [ "$1" == "git" ]; then
-	URL="$URL/unity/git/$2"
-fi
-if [ "$1" == "lfs" ]; then
-	URL="$URL/unity/git/$2"
-fi
-if [ "$1" == "ghu" ]; then
-	URL="$URL/unity/releases"
-fi
-
+GIT=0
+LFS=0
+GHU=0
+FILE=""
+VERSION=""
 RN=""
 MSG=""
-if [ $# -ge 6 ]; then
-	RN="$6"
+OS=""
+
+while [[ $# -gt 0 ]]
+do
+key="$1"
+
+case $key in
+    -h)
+    URL="$2"
+    shift
+    shift
+    ;;
+    -p)
+    FILE="--path $2"
+    shift
+    shift
+    ;;
+    -v)
+    VERSION="--version $2"
+    shift
+    shift
+    ;;
+    -r)
+    RN="--rn $2"
+    shift
+    shift
+    ;;
+    -m)
+    MSG="--msg $2"
+    shift
+    shift
+    ;;
+    -git)
+    GIT=1
+    shift # past value
+    ;;
+    -lfs)
+    LFS=1
+    shift # past value
+    ;;
+    -ghu)
+    GHU=1
+    shift # past value
+    ;;
+    -windows)
+    OS="windows"
+    shift # past value
+    ;;
+    -mac)
+    OS="mac"
+    shift # past value
+    ;;
+    -linux)
+    OS="linux"
+    shift # past value
+    ;;
+esac
+done
+
+if [ x"$GIT" = "x0" -a x"$LFS" = "x0" -a x"$GHU" = "x0" ]; then
+    echo "Usage: generate-package.sh [-git|-lfs|-ghu] [-windows|-mac|-linux only if -git or -lfs] [-v version] [-p path to file] [-h host url (optional)] [-r release notes file (optional)] [-m message file (optional)]"
+    exit 1
 fi
 
-if [ $# -ge 7 ]; then
-	MSG="$7"
+if [ x"$GHU" = x"1" ]; then
+    URL="--url $URL/unity/releases"
+else
+    URL="--url $URL/unity/git/$OS"
 fi
 
-EXEC="mono "
-if [ -e "/c/" ]; then
-	EXEC=""
+EXEC=
+if [ ! -e "/c/" ]; then
+    EXEC=mono
 fi
 
 if [ ! -e "build/CommandLine/CommandLine.exe" ]; then
-	>&2 xbuild /target:CommandLine "$DIR/GitHub.Unity.sln" /verbosity:minimal
+    >&2 xbuild /target:CommandLine "$DIR/GitHub.Unity.sln" /verbosity:minimal
 fi
 
-$EXEC build/CommandLine/CommandLine.exe --gen-package --version "$3" --path "$4" --url "$URL" --rn "$RN" --msg "$MSG"
+$EXEC build/CommandLine/CommandLine.exe --gen-package $VERSION $FILE $URL $RN $MSG