#!/usr/bin/env sh

# Store the start directory for later reference

STARTDIR="$PWD"

# Set this to the number of processor cores you would like to use

NUM_CORES=${NUM_CORES:=1}

# A function to choose the branch to build against

ChooseBranch () {

echo "Choose the branch you wish to build against:"

echo ""

# Store a base counting variable

num=0

# Navigate to the makefiles/branch directory

cd makefiles/branch

# Loop through all branches supported by the plugin

for filepath in $(find . -maxdepth 1 -type f -print0 | xargs -0)

do

# Increment the counter

num=$(( $num + 1))

# Get the name of the file

filename=${filepath##*/}

file=${filename%.*}

# Store the option by its number

eval option_${num}=${file}

# Print the current option

echo -e "\t($num) $file"

done

echo ""

# Request a choice of branch

read choice

# Was the choice invalid?

if ! echo $choice | egrep -q '^[0-9]+$'; then

ChooseBranch

elif [ $choice -le 0 ] ; then

ChooseBranch

elif [ $choice -gt $num ] ; then

ChooseBranch

# The choice was valid

else

# Get the branch chosen

branch=option_$choice

BRANCH=${!branch}

# Show the build-type options

CloneRepo

fi

}

# A function to create the clone and checkout the selected branch

CloneRepo () {

# Set the branch's repository directory

BRANCHDIR="$STARTDIR/hl2sdk/$BRANCH"

# If the hl2sdk directory does not exist, create the clone

if [ ! -d "$BRANCHDIR" ]; then

mkdir -p "$BRANCHDIR"

cd "$BRANCHDIR"

git clone https://github.com/alliedmodders/hl2sdk.git .

else

cd "$BRANCHDIR"

fi

# Try to checkout the selected branch and revert all changes

if git checkout -f $BRANCH; then

PullChanges

else

echo "Unknown branch to checkout"

fi

}

# A function to pull repo changes

PullChanges () {

# Pull the newest changeset from github/alliedmods/hl2sdk

if git pull; then

# Move the patched files

MovePatches

else

# Print a message that an error was encountered

echo "git pull encountered an error."

fi

}

# A function to move patched files

MovePatches () {

# Set the branch's patch directory

PATCHDIR="$STARTDIR/patches/$BRANCH"

# Copy any patched files over if any exist for the specific branch

if [ -d "$PATCHDIR" ]; then

cd "$PATCHDIR"

cp -r * "$BRANCHDIR"

fi

# Create the build files for the branch

CreateBuild

}

# A function to create build files

CreateBuild () {

# Navigate back to the starting directory

cd "$STARTDIR"

# Set the branch's build directory

BUILDDIR="$STARTDIR/Builds/Linux/$BRANCH"

# Does the build directory exist (make it if not)?

if [ ! -d "$BUILDDIR" ]; then

mkdir -p "$BUILDDIR"

fi

cmake . -B"$BUILDDIR" -DBRANCH=$BRANCH

# Navigate to the ../Builds/<Branch> directory

cd "$BUILDDIR"

# Build the binaries

make clean

make -j$NUM_CORES 2>&1 | tee build.log

# Set the exit code to the exit code of the make command. Otherwise it

# would be the exit code of the pipe command

test ${PIPESTATUS[0]} -eq 0

}

if [ "$#" -eq "1" ]; then

BRANCH=$1

CloneRepo

else

ChooseBranch

fi