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- #!/bin/sh
- #
- # Copyright © 2015-2021 the original 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.
- #
- # SPDX-License-Identifier: Apache-2.0
- #
- ##############################################################################
- #
- # Gradle start up script for POSIX generated by Gradle.
- #
- # Important for running:
- #
- # (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
- # noncompliant, but you have some other compliant shell such as ksh or
- # bash, then to run this script, type that shell name before the whole
- # command line, like:
- #
- # ksh Gradle
- #
- # Busybox and similar reduced shells will NOT work, because this script
- # requires all of these POSIX shell features:
- # * functions;
- # * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
- # «${var#prefix}», «${var%suffix}», and «$( cmd )»;
- # * compound commands having a testable exit status, especially «case»;
- # * various built-in commands including «command», «set», and «ulimit».
- #
- # Important for patching:
- #
- # (2) This script targets any POSIX shell, so it avoids extensions provided
- # by Bash, Ksh, etc; in particular arrays are avoided.
- #
- # The "traditional" practice of packing multiple parameters into a
- # space-separated string is a well documented source of bugs and security
- # problems, so this is (mostly) avoided, by progressively accumulating
- # options in "$@", and eventually passing that to Java.
- #
- # Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
- # and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
- # see the in-line comments for details.
- #
- # There are tweaks for specific operating systems such as AIX, CygWin,
- # Darwin, MinGW, and NonStop.
- #
- # (3) This script is generated from the Groovy template
- # https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
- # within the Gradle project.
- #
- # You can find Gradle at https://github.com/gradle/gradle/.
- #
- ##############################################################################
- # Attempt to set APP_HOME
- # Resolve links: $0 may be a link
- app_path=$0
- # Need this for daisy-chained symlinks.
- while
- APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
- [ -h "$app_path" ]
- do
- ls=$( ls -ld "$app_path" )
- link=${ls#*' -> '}
- case $link in #(
- /*) app_path=$link ;; #(
- *) app_path=$APP_HOME$link ;;
- esac
- done
- # This is normally unused
- # shellcheck disable=SC2034
- APP_BASE_NAME=${0##*/}
- # Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
- APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s
- ' "$PWD" ) || exit
- # Use the maximum available, or set MAX_FD != -1 to use that value.
- MAX_FD=maximum
- warn () {
- echo "$*"
- } >&2
- die () {
- echo
- echo "$*"
- echo
- exit 1
- } >&2
- # OS specific support (must be 'true' or 'false').
- cygwin=false
- msys=false
- darwin=false
- nonstop=false
- case "$( uname )" in #(
- CYGWIN* ) cygwin=true ;; #(
- Darwin* ) darwin=true ;; #(
- MSYS* | MINGW* ) msys=true ;; #(
- NONSTOP* ) nonstop=true ;;
- esac
- CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
- # Determine the Java command to use to start the JVM.
- 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
- if [ ! -x "$JAVACMD" ] ; then
- die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
- Please set the JAVA_HOME variable in your environment to match the
- location of your Java installation."
- fi
- else
- JAVACMD=java
- if ! command -v java >/dev/null 2>&1
- then
- die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
- Please set the JAVA_HOME variable in your environment to match the
- location of your Java installation."
- fi
- fi
- # Increase the maximum file descriptors if we can.
- if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
- case $MAX_FD in #(
- max*)
- # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
- # shellcheck disable=SC2039,SC3045
- MAX_FD=$( ulimit -H -n ) ||
- warn "Could not query maximum file descriptor limit"
- esac
- case $MAX_FD in #(
- '' | soft) :;; #(
- *)
- # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
- # shellcheck disable=SC2039,SC3045
- ulimit -n "$MAX_FD" ||
- warn "Could not set maximum file descriptor limit to $MAX_FD"
- esac
- fi
- # Collect all arguments for the java command, stacking in reverse order:
- # * args from the command line
- # * the main class name
- # * -classpath
- # * -D...appname settings
- # * --module-path (only if needed)
- # * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
- # For Cygwin or MSYS, switch paths to Windows format before running java
- if "$cygwin" || "$msys" ; then
- APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
- CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
- JAVACMD=$( cygpath --unix "$JAVACMD" )
- # Now convert the arguments - kludge to limit ourselves to /bin/sh
- for arg do
- if
- case $arg in #(
- -*) false ;; # don't mess with options #(
- /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
- [ -e "$t" ] ;; #(
- *) false ;;
- esac
- then
- arg=$( cygpath --path --ignore --mixed "$arg" )
- fi
- # Roll the args list around exactly as many times as the number of
- # args, so each arg winds up back in the position where it started, but
- # possibly modified.
- #
- # NB: a `for` loop captures its iteration list before it begins, so
- # changing the positional parameters here affects neither the number of
- # iterations, nor the values presented in `arg`.
- shift # remove old arg
- set -- "$@" "$arg" # push replacement arg
- done
- fi
- # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
- DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
- # Collect all arguments for the java command:
- # * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
- # and any embedded shellness will be escaped.
- # * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
- # treated as '${Hostname}' itself on the command line.
- set -- \
- "-Dorg.gradle.appname=$APP_BASE_NAME" \
- -classpath "$CLASSPATH" \
- org.gradle.wrapper.GradleWrapperMain \
- "$@"
- # Stop when "xargs" is not available.
- if ! command -v xargs >/dev/null 2>&1
- then
- die "xargs is not available"
- fi
- # Use "xargs" to parse quoted args.
- #
- # With -n1 it outputs one arg per line, with the quotes and backslashes removed.
- #
- # In Bash we could simply go:
- #
- # readarray ARGS < <( xargs -n1 <<<"$var" ) &&
- # set -- "${ARGS[@]}" "$@"
- #
- # but POSIX shell has neither arrays nor command substitution, so instead we
- # post-process each arg (as a line of input to sed) to backslash-escape any
- # character that might be a shell metacharacter, then use eval to reverse
- # that process (while maintaining the separation between arguments), and wrap
- # the whole thing up as a single "set" statement.
- #
- # This will of course break if any of these variables contains a newline or
- # an unmatched quote.
- #
- eval "set -- $(
- printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
- xargs -n1 |
- sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
- tr '\n' ' '
- )" '"$@"'
- exec "$JAVACMD" "$@"
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