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#!/bin/sh |
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# Copyright © 2015-2021 the original authors. |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# https://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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# |
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# SPDX-License-Identifier: Apache-2.0 |
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# |
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############################################################################## |
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# Gradle start up script for POSIX generated by Gradle. |
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# |
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# Important for running: |
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# |
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# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is |
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# noncompliant, but you have some other compliant shell such as ksh or |
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# bash, then to run this script, type that shell name before the whole |
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# command line, like: |
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# |
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# ksh Gradle |
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# |
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# Busybox and similar reduced shells will NOT work, because this script |
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# requires all of these POSIX shell features: |
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# * functions; |
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# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», |
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# «${var#prefix}», «${var%suffix}», and «$( cmd )»; |
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# * compound commands having a testable exit status, especially «case»; |
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# * various built-in commands including «command», «set», and «ulimit». |
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# |
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# Important for patching: |
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# |
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# (2) This script targets any POSIX shell, so it avoids extensions provided |
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# by Bash, Ksh, etc; in particular arrays are avoided. |
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# |
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# The "traditional" practice of packing multiple parameters into a |
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# space-separated string is a well documented source of bugs and security |
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# problems, so this is (mostly) avoided, by progressively accumulating |
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# options in "$@", and eventually passing that to Java. |
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# |
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# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, |
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# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; |
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# see the in-line comments for details. |
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# |
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# There are tweaks for specific operating systems such as AIX, CygWin, |
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# Darwin, MinGW, and NonStop. |
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# |
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# (3) This script is generated from the Groovy template |
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# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt |
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# within the Gradle project. |
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# |
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# You can find Gradle at https://github.com/gradle/gradle/. |
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# |
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############################################################################## |
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# Attempt to set APP_HOME |
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# Resolve links: $0 may be a link |
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app_path=$0 |
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# Need this for daisy-chained symlinks. |
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while |
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APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path |
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[ -h "$app_path" ] |
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do |
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ls=$( ls -ld "$app_path" ) |
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link=${ls#*' -> '} |
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case $link in #( |
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/*) app_path=$link ;; #( |
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*) app_path=$APP_HOME$link ;; |
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esac |
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done |
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# This is normally unused |
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# shellcheck disable=SC2034 |
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APP_BASE_NAME=${0##*/} |
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# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036) |
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APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s |
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' "$PWD" ) || exit |
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# Use the maximum available, or set MAX_FD != -1 to use that value. |
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MAX_FD=maximum |
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warn () { |
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echo "$*" |
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} >&2 |
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die () { |
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echo |
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echo "$*" |
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echo |
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exit 1 |
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} >&2 |
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# OS specific support (must be 'true' or 'false'). |
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cygwin=false |
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msys=false |
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darwin=false |
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nonstop=false |
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case "$( uname )" in #( |
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CYGWIN* ) cygwin=true ;; #( |
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Darwin* ) darwin=true ;; #( |
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MSYS* | MINGW* ) msys=true ;; #( |
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NONSTOP* ) nonstop=true ;; |
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esac |
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CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar |
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# Determine the Java command to use to start the JVM. |
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if [ -n "$JAVA_HOME" ] ; then |
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if [ -x "$JAVA_HOME/jre/sh/java" ] ; then |
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# IBM's JDK on AIX uses strange locations for the executables |
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JAVACMD=$JAVA_HOME/jre/sh/java |
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else |
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JAVACMD=$JAVA_HOME/bin/java |
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fi |
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if [ ! -x "$JAVACMD" ] ; then |
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die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME |
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Please set the JAVA_HOME variable in your environment to match the |
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location of your Java installation." |
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fi |
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else |
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JAVACMD=java |
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if ! command -v java >/dev/null 2>&1 |
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then |
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die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. |
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Please set the JAVA_HOME variable in your environment to match the |
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location of your Java installation." |
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fi |
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fi |
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# Increase the maximum file descriptors if we can. |
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if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then |
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case $MAX_FD in #( |
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max*) |
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# In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. |
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# shellcheck disable=SC2039,SC3045 |
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MAX_FD=$( ulimit -H -n ) || |
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warn "Could not query maximum file descriptor limit" |
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esac |
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case $MAX_FD in #( |
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'' | soft) :;; #( |
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*) |
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# In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. |
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# shellcheck disable=SC2039,SC3045 |
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ulimit -n "$MAX_FD" || |
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warn "Could not set maximum file descriptor limit to $MAX_FD" |
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esac |
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fi |
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# Collect all arguments for the java command, stacking in reverse order: |
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# * args from the command line |
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# * the main class name |
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# * -classpath |
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# * -D...appname settings |
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# * --module-path (only if needed) |
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# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. |
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# For Cygwin or MSYS, switch paths to Windows format before running java |
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if "$cygwin" || "$msys" ; then |
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APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) |
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CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) |
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JAVACMD=$( cygpath --unix "$JAVACMD" ) |
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# Now convert the arguments - kludge to limit ourselves to /bin/sh |
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for arg do |
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if |
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case $arg in #( |
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-*) false ;; # don't mess with options #( |
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/?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath |
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[ -e "$t" ] ;; #( |
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*) false ;; |
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esac |
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then |
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arg=$( cygpath --path --ignore --mixed "$arg" ) |
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fi |
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# Roll the args list around exactly as many times as the number of |
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# args, so each arg winds up back in the position where it started, but |
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# possibly modified. |
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# |
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# NB: a `for` loop captures its iteration list before it begins, so |
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# changing the positional parameters here affects neither the number of |
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# iterations, nor the values presented in `arg`. |
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shift # remove old arg |
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set -- "$@" "$arg" # push replacement arg |
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done |
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fi |
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# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. |
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DEFAULT_JVM_OPTS='-Dfile.encoding=UTF-8 "-Xmx64m" "-Xms64m"' |
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# Collect all arguments for the java command: |
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# * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments, |
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# and any embedded shellness will be escaped. |
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# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be |
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# treated as '${Hostname}' itself on the command line. |
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set -- \ |
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"-Dorg.gradle.appname=$APP_BASE_NAME" \ |
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-classpath "$CLASSPATH" \ |
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org.gradle.wrapper.GradleWrapperMain \ |
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"$@" |
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# Stop when "xargs" is not available. |
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if ! command -v xargs >/dev/null 2>&1 |
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then |
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die "xargs is not available" |
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fi |
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# Use "xargs" to parse quoted args. |
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# |
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# With -n1 it outputs one arg per line, with the quotes and backslashes removed. |
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# |
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# In Bash we could simply go: |
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# |
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# readarray ARGS < <( xargs -n1 <<<"$var" ) && |
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# set -- "${ARGS[@]}" "$@" |
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# |
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# but POSIX shell has neither arrays nor command substitution, so instead we |
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# post-process each arg (as a line of input to sed) to backslash-escape any |
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# character that might be a shell metacharacter, then use eval to reverse |
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# that process (while maintaining the separation between arguments), and wrap |
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# the whole thing up as a single "set" statement. |
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# |
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# This will of course break if any of these variables contains a newline or |
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# an unmatched quote. |
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# |
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eval "set -- $( |
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printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | |
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xargs -n1 | |
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sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | |
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tr '\n' ' ' |
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)" '"$@"' |
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exec "$JAVACMD" "$@" |