bin/buck - buck - Git at Google

 #!/bin/bash

 # Exit on error.
 set -e


 # Set TMPDIR to a reasonable default if it isn't already set, so that mktmp(1) can be
 # succinctly and portably used.
 if [ "x${TMPDIR}" = "x" ] ; then
   TMPDIR="/tmp"
 fi

 # Record the directory from which this script was run in case
 # we need to re-run it as part of the autoupdate.
 ORIGINAL_WORKING_DIRECTORY="$PWD"

 # $BUCK_BIN_DIRECTORY is the directory that hosts this script. Solution taken from:
 # http://stackoverflow.com/questions/59895/can-a-bash-script-tell-what-directory-its-stored-in
 SOURCE="${BASH_SOURCE[0]}"
 DIR="$( dirname "$SOURCE" )"
 while [ -h "$SOURCE" ]
 do
   SOURCE="$(readlink "$SOURCE")"
   [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"
   DIR="$( cd -P "$( dirname "$SOURCE"  )" && pwd )"
 done
 DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
 BUCK_BIN_DIRECTORY=$DIR

 # Keep track of the project root directory.
 PROJECT_ROOT="$PWD"

 # Navigate to the root of the Buck project.
 pushd $BUCK_BIN_DIRECTORY > /dev/null
 pushd .. > /dev/null
 BUCK_DIRECTORY="$PWD"

 # If there is a .buckversion file in the project root, then make sure that Buck is at that version.
 # The only way to override this is to include a .nobuckcheck file in the project root.
 if [ -e "${PROJECT_ROOT}/.buckversion" ] && [ ! -e "${PROJECT_ROOT}/.nobuckcheck" ]; then
   BUCK_REQUIRED_VERSION=`cat ${PROJECT_ROOT}/.buckversion`

   # If the hash is in not in the user's repository, do a `git fetch`.
   if ! git cat-file -e "$BUCK_REQUIRED_VERSION"; then
     git fetch
   fi


   BUCK_CURRENT_VERSION=`git rev-parse HEAD`

   # Note that this test succeeds if you have local changes in your Buck repository that have not
   # been committed.
   if [ "$BUCK_REQUIRED_VERSION" != "$BUCK_CURRENT_VERSION" ]; then
     echo "Buck is at ${BUCK_CURRENT_VERSION},"
     echo "but should be ${BUCK_REQUIRED_VERSION}."
     echo "Buck is updating itself."
     echo "To disable this, add a '.nobuckcheck' file to your project root."
     echo "In general, you should only disable this if you are developing Buck."

     # Now that the version is guaranteed to be in the user's repository,
     # checkout that hash.
     git checkout $BUCK_REQUIRED_VERSION

     # Now that we have updated the repository, we should rebuild Buck.
     ant clean
   fi
 fi

 # Make sure that Buck has been built.
 if [ ! -e "build/buck.jar" ]; then
   echo "No sign of buck.jar -- building Buck!"
   # Note the jar file will not be used,
   # but serves to represent whether everything has been built.
   ant clean jar
   cd $ORIGINAL_WORKING_DIRECTORY
   # Although ${BASH_SOURCE[0]} may be a relative path, it should
   # be relative to $ORIGINAL_WORKING_DIRECTORY, which is now the
   # current directory.
   "${BASH_SOURCE[0]}" "$@"
   exit $?
 fi

 # if the output of git status -s is non-empty (-n test), it means there are changed files.
 BUCK_REPOSITORY_DIRTY=0
 if [ -d ".git" ]; then
   # Make sure buck gets passed the right version.
   BUCK_CURRENT_VERSION=`git rev-parse HEAD`

   if [ -n "`git status -s`" ]; then
     BUCK_REPOSITORY_DIRTY=1
   fi
 else
   BUCK_CURRENT_VERSION="N/A"
 fi

 # Compute a version string that uniquely incorporates the current git revision
 # and local modifications (if any) to managed files that are relevant to
 # building/running the buck application.
 if [ "x${BUCK_REPOSITORY_DIRTY}" = "x0" ] ; then
   BUCK_VERSION_UID="${BUCK_CURRENT_VERSION}"
 else
   if [ -d ".git" ] ; then
     # Get git tree for current revision.
     git_tree_in=`git log -n1 --pretty=format:%T HEAD`

     # Generate git tree as it would exist if current local changes were
     # committed.
     git_tree_out=$(
       git_index_file=`mktemp ${TMPDIR}/buck-git-index.XXXXXX` || exit 1
       export GIT_INDEX_FILE="${git_index_file}"
       git read-tree ${git_tree_in} || exit 1
       git update-index --add --remove `git diff --name-only HEAD` || exit 1
       git write-tree || exit 1
       rm -f "${git_index_file}"
     )

     # Compute UID based on relevant portions of the output git tree.
     buck_version_uid_input=`mktemp ${TMPDIR}/buck-version-uid-input.XXXXXX` || exit 1
     git ls-tree --full-tree ${git_tree_out} bin build.xml config lib third-party \
       > ${buck_version_uid_input} || exit 1
     BUCK_VERSION_UID=`git hash-object ${buck_version_uid_input}` || exit 1
     rm -f "${buck_version_uid_input}"
   else
     BUCK_VERSION_UID="N/A"
   fi
 fi

 # Pop back to the original directory.
 popd > /dev/null
 popd > /dev/null

 EXTRA_FLAGS=''

 # To debug BUCK, add the following argument to the command below.  This will wait on port 8888 to
 # for Eclipse.
 #
 # EXTRA_FLAGS="${EXTRA_FLAGS} -agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=8888"


 # Note that if $RELATIVE_PATH_TO_BUCK_PY changes, then the default value of
 # com.facebook.buck.json.BuildFileToJsonParser#PATH_TO_BUCK_PY also needs to be updated.
 RELATIVE_PATH_TO_BUCK_PY=src/com/facebook/buck/parser/buck.py
 PATH_TO_BUCK_PY="${BUCK_DIRECTORY}/$RELATIVE_PATH_TO_BUCK_PY"

 # Run Buck "unpacked," i.e., from specifying its individual classpath elements rather than from a
 # single monolithic JAR file that includes all of its dependencies. This speeds up Buck development
 # because `ant compile` takes much less time to rebuild Buck than `ant jar` does.
 #
 java \
 -XX:MaxPermSize=256m \
 -Xmx1000m \
 $EXTRA_FLAGS \
 -Djava.awt.headless=true \
 -Dbuck.testrunner_classes=${BUCK_DIRECTORY}/build/testrunner/classes \
 -Dbuck.path_to_emma_jar=${BUCK_DIRECTORY}/third-party/java/emma-2.0.5312/out/emma-2.0.5312.jar \
 -Dbuck.test_util_no_tests_dir=true \
 -Dbuck.path_to_buck_py=${PATH_TO_BUCK_PY} \
 -Dbuck.path_to_intellij_py=${BUCK_DIRECTORY}/src/com/facebook/buck/command/intellij.py \
 -Dbuck.git_commit=${BUCK_CURRENT_VERSION} \
 -Dbuck.git_dirty=${BUCK_REPOSITORY_DIRTY} \
 -Dbuck.version_uid=${BUCK_VERSION_UID} \
 -Dlog4j.configuration=file:${BUCK_DIRECTORY}/config/log4j.properties \
 -classpath \
 ${BUCK_DIRECTORY}/src:\
 ${BUCK_DIRECTORY}/build/classes:\
 ${BUCK_DIRECTORY}/lib/args4j.jar:\
 ${BUCK_DIRECTORY}/lib/ddmlib-r21.jar:\
 ${BUCK_DIRECTORY}/lib/guava-14.0.1.jar:\
 ${BUCK_DIRECTORY}/lib/ini4j-0.5.2.jar:\
 ${BUCK_DIRECTORY}/lib/jackson-annotations-2.0.5.jar:\
 ${BUCK_DIRECTORY}/lib/jackson-core-2.0.5.jar:\
 ${BUCK_DIRECTORY}/lib/jackson-databind-2.0.5.jar:\
 ${BUCK_DIRECTORY}/lib/jsr305.jar:\
 ${BUCK_DIRECTORY}/lib/jyson-1.0.2.jar:\
 ${BUCK_DIRECTORY}/lib/jython-standalone-2.5.3.jar:\
 ${BUCK_DIRECTORY}/lib/sdklib.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/astyanax-cassandra-1.56.38.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/astyanax-core-1.56.38.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/astyanax-thrift-1.56.38.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/cassandra-1.2.3.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/cassandra-thrift-1.2.3.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/commons-cli-1.1.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/commons-codec-1.2.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/commons-lang-2.6.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/high-scale-lib-1.1.2.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/joda-time-2.2.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/libthrift-0.7.0.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/log4j-1.2.16.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/slf4j-api-1.7.2.jar:\
 ${BUCK_DIRECTORY}/third-party/java/astyanax/slf4j-log4j12-1.7.2.jar \
 com.facebook.buck.cli.Main "$@"
	#!/bin/bash

	# Exit on error.
	set -e


	# Set TMPDIR to a reasonable default if it isn't already set, so that mktmp(1) can be
	# succinctly and portably used.
	if [ "x${TMPDIR}" = "x" ] ; then
	TMPDIR="/tmp"
	fi

	# Record the directory from which this script was run in case
	# we need to re-run it as part of the autoupdate.
	ORIGINAL_WORKING_DIRECTORY="$PWD"

	# $BUCK_BIN_DIRECTORY is the directory that hosts this script. Solution taken from:
	# http://stackoverflow.com/questions/59895/can-a-bash-script-tell-what-directory-its-stored-in
	SOURCE="${BASH_SOURCE[0]}"
	DIR="$( dirname "$SOURCE" )"
	while [ -h "$SOURCE" ]
	do
	SOURCE="$(readlink "$SOURCE")"
	[[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"
	DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
	done
	DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
	BUCK_BIN_DIRECTORY=$DIR

	# Keep track of the project root directory.
	PROJECT_ROOT="$PWD"

	# Navigate to the root of the Buck project.
	pushd $BUCK_BIN_DIRECTORY > /dev/null
	pushd .. > /dev/null
	BUCK_DIRECTORY="$PWD"

	# If there is a .buckversion file in the project root, then make sure that Buck is at that version.
	# The only way to override this is to include a .nobuckcheck file in the project root.
	if [ -e "${PROJECT_ROOT}/.buckversion" ] && [ ! -e "${PROJECT_ROOT}/.nobuckcheck" ]; then
	BUCK_REQUIRED_VERSION=`cat ${PROJECT_ROOT}/.buckversion`

	# If the hash is in not in the user's repository, do a `git fetch`.
	if ! git cat-file -e "$BUCK_REQUIRED_VERSION"; then
	git fetch
	fi


	BUCK_CURRENT_VERSION=`git rev-parse HEAD`

	# Note that this test succeeds if you have local changes in your Buck repository that have not
	# been committed.
	if [ "$BUCK_REQUIRED_VERSION" != "$BUCK_CURRENT_VERSION" ]; then
	echo "Buck is at ${BUCK_CURRENT_VERSION},"
	echo "but should be ${BUCK_REQUIRED_VERSION}."
	echo "Buck is updating itself."
	echo "To disable this, add a '.nobuckcheck' file to your project root."
	echo "In general, you should only disable this if you are developing Buck."

	# Now that the version is guaranteed to be in the user's repository,
	# checkout that hash.
	git checkout $BUCK_REQUIRED_VERSION

	# Now that we have updated the repository, we should rebuild Buck.
	ant clean
	fi
	fi

	# Make sure that Buck has been built.
	if [ ! -e "build/buck.jar" ]; then
	echo "No sign of buck.jar -- building Buck!"
	# Note the jar file will not be used,
	# but serves to represent whether everything has been built.
	ant clean jar
	cd $ORIGINAL_WORKING_DIRECTORY
	# Although ${BASH_SOURCE[0]} may be a relative path, it should
	# be relative to $ORIGINAL_WORKING_DIRECTORY, which is now the
	# current directory.
	"${BASH_SOURCE[0]}" "$@"
	exit $?
	fi

	# if the output of git status -s is non-empty (-n test), it means there are changed files.
	BUCK_REPOSITORY_DIRTY=0
	if [ -d ".git" ]; then
	# Make sure buck gets passed the right version.
	BUCK_CURRENT_VERSION=`git rev-parse HEAD`

	if [ -n "`git status -s`" ]; then
	BUCK_REPOSITORY_DIRTY=1
	fi
	else
	BUCK_CURRENT_VERSION="N/A"
	fi

	# Compute a version string that uniquely incorporates the current git revision
	# and local modifications (if any) to managed files that are relevant to
	# building/running the buck application.
	if [ "x${BUCK_REPOSITORY_DIRTY}" = "x0" ] ; then
	BUCK_VERSION_UID="${BUCK_CURRENT_VERSION}"
	else
	if [ -d ".git" ] ; then
	# Get git tree for current revision.
	git_tree_in=`git log -n1 --pretty=format:%T HEAD`

	# Generate git tree as it would exist if current local changes were
	# committed.
	git_tree_out=$(
	git_index_file=`mktemp ${TMPDIR}/buck-git-index.XXXXXX` \|\| exit 1
	export GIT_INDEX_FILE="${git_index_file}"
	git read-tree ${git_tree_in} \|\| exit 1
	git update-index --add --remove `git diff --name-only HEAD` \|\| exit 1
	git write-tree \|\| exit 1
	rm -f "${git_index_file}"
	)

	# Compute UID based on relevant portions of the output git tree.
	buck_version_uid_input=`mktemp ${TMPDIR}/buck-version-uid-input.XXXXXX` \|\| exit 1
	git ls-tree --full-tree ${git_tree_out} bin build.xml config lib third-party \
	> ${buck_version_uid_input} \|\| exit 1
	BUCK_VERSION_UID=`git hash-object ${buck_version_uid_input}` \|\| exit 1
	rm -f "${buck_version_uid_input}"
	else
	BUCK_VERSION_UID="N/A"
	fi
	fi

	# Pop back to the original directory.
	popd > /dev/null
	popd > /dev/null

	EXTRA_FLAGS=''

	# To debug BUCK, add the following argument to the command below. This will wait on port 8888 to
	# for Eclipse.
	#
	# EXTRA_FLAGS="${EXTRA_FLAGS} -agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=8888"


	# Note that if $RELATIVE_PATH_TO_BUCK_PY changes, then the default value of
	# com.facebook.buck.json.BuildFileToJsonParser#PATH_TO_BUCK_PY also needs to be updated.
	RELATIVE_PATH_TO_BUCK_PY=src/com/facebook/buck/parser/buck.py
	PATH_TO_BUCK_PY="${BUCK_DIRECTORY}/$RELATIVE_PATH_TO_BUCK_PY"

	# Run Buck "unpacked," i.e., from specifying its individual classpath elements rather than from a
	# single monolithic JAR file that includes all of its dependencies. This speeds up Buck development
	# because `ant compile` takes much less time to rebuild Buck than `ant jar` does.
	#
	java \
	-XX:MaxPermSize=256m \
	-Xmx1000m \
	$EXTRA_FLAGS \
	-Djava.awt.headless=true \
	-Dbuck.testrunner_classes=${BUCK_DIRECTORY}/build/testrunner/classes \
	-Dbuck.path_to_emma_jar=${BUCK_DIRECTORY}/third-party/java/emma-2.0.5312/out/emma-2.0.5312.jar \
	-Dbuck.test_util_no_tests_dir=true \
	-Dbuck.path_to_buck_py=${PATH_TO_BUCK_PY} \
	-Dbuck.path_to_intellij_py=${BUCK_DIRECTORY}/src/com/facebook/buck/command/intellij.py \
	-Dbuck.git_commit=${BUCK_CURRENT_VERSION} \
	-Dbuck.git_dirty=${BUCK_REPOSITORY_DIRTY} \
	-Dbuck.version_uid=${BUCK_VERSION_UID} \
	-Dlog4j.configuration=file:${BUCK_DIRECTORY}/config/log4j.properties \
	-classpath \
	${BUCK_DIRECTORY}/src:\
	${BUCK_DIRECTORY}/build/classes:\
	${BUCK_DIRECTORY}/lib/args4j.jar:\
	${BUCK_DIRECTORY}/lib/ddmlib-r21.jar:\
	${BUCK_DIRECTORY}/lib/guava-14.0.1.jar:\
	${BUCK_DIRECTORY}/lib/ini4j-0.5.2.jar:\
	${BUCK_DIRECTORY}/lib/jackson-annotations-2.0.5.jar:\
	${BUCK_DIRECTORY}/lib/jackson-core-2.0.5.jar:\
	${BUCK_DIRECTORY}/lib/jackson-databind-2.0.5.jar:\
	${BUCK_DIRECTORY}/lib/jsr305.jar:\
	${BUCK_DIRECTORY}/lib/jyson-1.0.2.jar:\
	${BUCK_DIRECTORY}/lib/jython-standalone-2.5.3.jar:\
	${BUCK_DIRECTORY}/lib/sdklib.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/astyanax-cassandra-1.56.38.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/astyanax-core-1.56.38.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/astyanax-thrift-1.56.38.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/cassandra-1.2.3.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/cassandra-thrift-1.2.3.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/commons-cli-1.1.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/commons-codec-1.2.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/commons-lang-2.6.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/high-scale-lib-1.1.2.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/joda-time-2.2.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/libthrift-0.7.0.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/log4j-1.2.16.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/slf4j-api-1.7.2.jar:\
	${BUCK_DIRECTORY}/third-party/java/astyanax/slf4j-log4j12-1.7.2.jar \
	com.facebook.buck.cli.Main "$@"