mvnw

#!/bin/sh
#
# Copyright 2012-2019 the original author or authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

# ----------------------------------------------------------------------------
# Maven Start Up Batch script
#
# Required ENV vars:
# ------------------
#   JAVA_HOME - location of a JDK home dir
#
# Optional ENV vars
# -----------------
#   M2_HOME - location of maven2's installed home dir
#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
#     e.g. to debug Maven itself, use
#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
# ----------------------------------------------------------------------------

if [ -z "$MAVEN_SKIP_RC" ]; then

	if [ -f /etc/mavenrc ]; then
		. /etc/mavenrc
	fi

	if [ -f "$HOME/.mavenrc" ]; then
		. "$HOME/.mavenrc"
	fi

fi

# OS specific support.  $var _must_ be set to either true or false.
cygwin=false
darwin=false
mingw=false
case "$(uname)" in
CYGWIN*) cygwin=true ;;
MINGW*) mingw=true ;;
Darwin*)
	darwin=true
	# Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
	# See https://developer.apple.com/library/mac/qa/qa1170/_index.html
	if [ -z "$JAVA_HOME" ]; then
		if [ -x "/usr/libexec/java_home" ]; then
			export JAVA_HOME="$(/usr/libexec/java_home)"
		else
			export JAVA_HOME="/Library/Java/Home"
		fi
	fi
	;;
esac

if [ -z "$JAVA_HOME" ]; then
	if [ -r /etc/gentoo-release ]; then
		JAVA_HOME=$(java-config --jre-home)
	fi
fi

if [ -z "$M2_HOME" ]; then
	## resolve links - $0 may be a link to maven's home
	PRG="$0"

	# need this for relative symlinks
	while [ -h "$PRG" ]; do
		ls=$(ls -ld "$PRG")
		link=$(expr "$ls" : '.*-> \(.*\)$')
		if expr "$link" : '/.*' >/dev/null; then
			PRG="$link"
		else
			PRG="$(dirname "$PRG")/$link"
		fi
	done

	saveddir=$(pwd)

	M2_HOME=$(dirname "$PRG")/..

	# make it fully qualified
	M2_HOME=$(cd "$M2_HOME" && pwd)

	cd "$saveddir"
	# echo Using m2 at $M2_HOME
fi

# For Cygwin, ensure paths are in UNIX format before anything is touched
if $cygwin; then
	[ -n "$M2_HOME" ] &&
		M2_HOME=$(cygpath --unix "$M2_HOME")
	[ -n "$JAVA_HOME" ] &&
		JAVA_HOME=$(cygpath --unix "$JAVA_HOME")
	[ -n "$CLASSPATH" ] &&
		CLASSPATH=$(cygpath --path --unix "$CLASSPATH")
fi

# For Mingw, ensure paths are in UNIX format before anything is touched
if $mingw; then
	[ -n "$M2_HOME" ] &&
		M2_HOME="$( (
			cd "$M2_HOME"
			pwd
		))"
	[ -n "$JAVA_HOME" ] &&
		JAVA_HOME="$( (
			cd "$JAVA_HOME"
			pwd
		))"
fi

if [ -z "$JAVA_HOME" ]; then
	javaExecutable="$(which javac)"
	if [ -n "$javaExecutable" ] && ! [ "$(expr \"$javaExecutable\" : '\([^ ]*\)')" = "no" ]; then
		# readlink(1) is not available as standard on Solaris 10.
		readLink=$(which readlink)
		if [ ! $(expr "$readLink" : '\([^ ]*\)') = "no" ]; then
			if $darwin; then
				javaHome="$(dirname \"$javaExecutable\")"
				javaExecutable="$(cd \"$javaHome\" && pwd -P)/javac"
			else
				javaExecutable="$(readlink -f \"$javaExecutable\")"
			fi
			javaHome="$(dirname \"$javaExecutable\")"
			javaHome=$(expr "$javaHome" : '\(.*\)/bin')
			JAVA_HOME="$javaHome"
			export JAVA_HOME
		fi
	fi
fi

if [ -z "$JAVACMD" ]; then
	if [ -n "$JAVA_HOME" ]; then
		if [ -x "$JAVA_HOME/jre/sh/java" ]; then
			# IBM's JDK on AIX uses strange locations for the executables
			JAVACMD="$JAVA_HOME/jre/sh/java"
		else
			JAVACMD="$JAVA_HOME/bin/java"
		fi
	else
		JAVACMD="$(which java)"
	fi
fi

if [ ! -x "$JAVACMD" ]; then
	echo "Error: JAVA_HOME is not defined correctly." >&2
	echo "  We cannot execute $JAVACMD" >&2
	exit 1
fi

if [ -z "$JAVA_HOME" ]; then
	echo "Warning: JAVA_HOME environment variable is not set."
fi

CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher

# traverses directory structure from process work directory to filesystem root
# first directory with .mvn subdirectory is considered project base directory
find_maven_basedir() {

	if [ -z "$1" ]; then
		echo "Path not specified to find_maven_basedir"
		return 1
	fi

	basedir="$1"
	wdir="$1"
	while [ "$wdir" != '/' ]; do
		if [ -d "$wdir"/.mvn ]; then
			basedir=$wdir
			break
		fi
		# workaround for JBEAP-8937 (on Solaris 10/Sparc)
		if [ -d "${wdir}" ]; then
			wdir=$(
				cd "$wdir/.."
				pwd
			)
		fi
		# end of workaround
	done
	echo "${basedir}"
}

# concatenates all lines of a file
concat_lines() {
	if [ -f "$1" ]; then
		echo "$(tr -s '\n' ' ' <"$1")"
	fi
}

BASE_DIR=$(find_maven_basedir "$(pwd)")
if [ -z "$BASE_DIR" ]; then
	exit 1
fi

##########################################################################################
# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
# This allows using the maven wrapper in projects that prohibit checking in binary data.
##########################################################################################
if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
	if [ "$MVNW_VERBOSE" = true ]; then
		echo "Found .mvn/wrapper/maven-wrapper.jar"
	fi
else
	if [ "$MVNW_VERBOSE" = true ]; then
		echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
	fi
	if [ -n "$MVNW_REPOURL" ]; then
		jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
	else
		jarUrl="https://repo1.maven.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
	fi
	while IFS="=" read key value; do
		case "$key" in wrapperUrl)
			jarUrl="$value"
			break
			;;
		esac
	done <"$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
	if [ "$MVNW_VERBOSE" = true ]; then
		echo "Downloading from: $jarUrl"
	fi
	wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
	if $cygwin; then
		wrapperJarPath=$(cygpath --path --windows "$wrapperJarPath")
	fi

	if command -v wget >/dev/null; then
		if [ "$MVNW_VERBOSE" = true ]; then
			echo "Found wget ... using wget"
		fi
		if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
			wget "$jarUrl" -O "$wrapperJarPath"
		else
			wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath"
		fi
	elif command -v curl >/dev/null; then
		if [ "$MVNW_VERBOSE" = true ]; then
			echo "Found curl ... using curl"
		fi
		if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
			curl -o "$wrapperJarPath" "$jarUrl" -f
		else
			curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
		fi

	else
		if [ "$MVNW_VERBOSE" = true ]; then
			echo "Falling back to using Java to download"
		fi
		javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
		# For Cygwin, switch paths to Windows format before running javac
		if $cygwin; then
			javaClass=$(cygpath --path --windows "$javaClass")
		fi
		if [ -e "$javaClass" ]; then
			if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
				if [ "$MVNW_VERBOSE" = true ]; then
					echo " - Compiling MavenWrapperDownloader.java ..."
				fi
				# Compiling the Java class
				("$JAVA_HOME/bin/javac" "$javaClass")
			fi
			if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
				# Running the downloader
				if [ "$MVNW_VERBOSE" = true ]; then
					echo " - Running MavenWrapperDownloader.java ..."
				fi
				("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
			fi
		fi
	fi
fi
##########################################################################################
# End of extension
##########################################################################################

export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
if [ "$MVNW_VERBOSE" = true ]; then
	echo $MAVEN_PROJECTBASEDIR
fi
MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"

# For Cygwin, switch paths to Windows format before running java
if $cygwin; then
	[ -n "$M2_HOME" ] &&
		M2_HOME=$(cygpath --path --windows "$M2_HOME")
	[ -n "$JAVA_HOME" ] &&
		JAVA_HOME=$(cygpath --path --windows "$JAVA_HOME")
	[ -n "$CLASSPATH" ] &&
		CLASSPATH=$(cygpath --path --windows "$CLASSPATH")
	[ -n "$MAVEN_PROJECTBASEDIR" ] &&
		MAVEN_PROJECTBASEDIR=$(cygpath --path --windows "$MAVEN_PROJECTBASEDIR")
fi

# Provide a "standardized" way to retrieve the CLI args that will
# work with both Windows and non-Windows executions.
MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
export MAVEN_CMD_LINE_ARGS

WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain

exec "$JAVACMD" \
	$MAVEN_OPTS \
	-classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
	"-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
	${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"