1#!/bin/sh 2 3# 4# Copyright © 2015-2021 the original authors. 5# 6# Licensed under the Apache License, Version 2.0 (the "License"); 7# you may not use this file except in compliance with the License. 8# You may obtain a copy of the License at 9# 10# https://www.apache.org/licenses/LICENSE-2.0 11# 12# Unless required by applicable law or agreed to in writing, software 13# distributed under the License is distributed on an "AS IS" BASIS, 14# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15# See the License for the specific language governing permissions and 16# limitations under the License. 17# 18# SPDX-License-Identifier: Apache-2.0 19# 20 21############################################################################## 22# 23# Gradle start up script for POSIX generated by Gradle. 24# 25# Important for running: 26# 27# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is 28# noncompliant, but you have some other compliant shell such as ksh or 29# bash, then to run this script, type that shell name before the whole 30# command line, like: 31# 32# ksh Gradle 33# 34# Busybox and similar reduced shells will NOT work, because this script 35# requires all of these POSIX shell features: 36# * functions; 37# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», 38# «${var#prefix}», «${var%suffix}», and «$( cmd )»; 39# * compound commands having a testable exit status, especially «case»; 40# * various built-in commands including «command», «set», and «ulimit». 41# 42# Important for patching: 43# 44# (2) This script targets any POSIX shell, so it avoids extensions provided 45# by Bash, Ksh, etc; in particular arrays are avoided. 46# 47# The "traditional" practice of packing multiple parameters into a 48# space-separated string is a well documented source of bugs and security 49# problems, so this is (mostly) avoided, by progressively accumulating 50# options in "$@", and eventually passing that to Java. 51# 52# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, 53# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; 54# see the in-line comments for details. 55# 56# There are tweaks for specific operating systems such as AIX, CygWin, 57# Darwin, MinGW, and NonStop. 58# 59# (3) This script is generated from the Groovy template 60# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt 61# within the Gradle project. 62# 63# You can find Gradle at https://github.com/gradle/gradle/. 64# 65############################################################################## 66 67# Attempt to set APP_HOME 68 69# Resolve links: $0 may be a link 70app_path=$0 71 72# Need this for daisy-chained symlinks. 73while 74 APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path 75 [ -h "$app_path" ] 76do 77 ls=$( ls -ld "$app_path" ) 78 link=${ls#*' -> '} 79 case $link in #( 80 /*) app_path=$link ;; #( 81 *) app_path=$APP_HOME$link ;; 82 esac 83done 84 85# This is normally unused 86# shellcheck disable=SC2034 87APP_BASE_NAME=${0##*/} 88# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036) 89APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit 90 91# Use the maximum available, or set MAX_FD != -1 to use that value. 92MAX_FD=maximum 93 94warn () { 95 echo "$*" 96} >&2 97 98die () { 99 echo 100 echo "$*" 101 echo 102 exit 1 103} >&2 104 105# OS specific support (must be 'true' or 'false'). 106cygwin=false 107msys=false 108darwin=false 109nonstop=false 110case "$( uname )" in #( 111 CYGWIN* ) cygwin=true ;; #( 112 Darwin* ) darwin=true ;; #( 113 MSYS* | MINGW* ) msys=true ;; #( 114 NONSTOP* ) nonstop=true ;; 115esac 116 117CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 118 119 120# Determine the Java command to use to start the JVM. 121if [ -n "$JAVA_HOME" ] ; then 122 if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 123 # IBM's JDK on AIX uses strange locations for the executables 124 JAVACMD=$JAVA_HOME/jre/sh/java 125 else 126 JAVACMD=$JAVA_HOME/bin/java 127 fi 128 if [ ! -x "$JAVACMD" ] ; then 129 die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 130 131Please set the JAVA_HOME variable in your environment to match the 132location of your Java installation." 133 fi 134else 135 JAVACMD=java 136 if ! command -v java >/dev/null 2>&1 137 then 138 die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 139 140Please set the JAVA_HOME variable in your environment to match the 141location of your Java installation." 142 fi 143fi 144 145# Increase the maximum file descriptors if we can. 146if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then 147 case $MAX_FD in #( 148 max*) 149 # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. 150 # shellcheck disable=SC2039,SC3045 151 MAX_FD=$( ulimit -H -n ) || 152 warn "Could not query maximum file descriptor limit" 153 esac 154 case $MAX_FD in #( 155 '' | soft) :;; #( 156 *) 157 # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. 158 # shellcheck disable=SC2039,SC3045 159 ulimit -n "$MAX_FD" || 160 warn "Could not set maximum file descriptor limit to $MAX_FD" 161 esac 162fi 163 164# Collect all arguments for the java command, stacking in reverse order: 165# * args from the command line 166# * the main class name 167# * -classpath 168# * -D...appname settings 169# * --module-path (only if needed) 170# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. 171 172# For Cygwin or MSYS, switch paths to Windows format before running java 173if "$cygwin" || "$msys" ; then 174 APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) 175 CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) 176 177 JAVACMD=$( cygpath --unix "$JAVACMD" ) 178 179 # Now convert the arguments - kludge to limit ourselves to /bin/sh 180 for arg do 181 if 182 case $arg in #( 183 -*) false ;; # don't mess with options #( 184 /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath 185 [ -e "$t" ] ;; #( 186 *) false ;; 187 esac 188 then 189 arg=$( cygpath --path --ignore --mixed "$arg" ) 190 fi 191 # Roll the args list around exactly as many times as the number of 192 # args, so each arg winds up back in the position where it started, but 193 # possibly modified. 194 # 195 # NB: a `for` loop captures its iteration list before it begins, so 196 # changing the positional parameters here affects neither the number of 197 # iterations, nor the values presented in `arg`. 198 shift # remove old arg 199 set -- "$@" "$arg" # push replacement arg 200 done 201fi 202 203 204# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 205DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' 206 207# Collect all arguments for the java command: 208# * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments, 209# and any embedded shellness will be escaped. 210# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be 211# treated as '${Hostname}' itself on the command line. 212 213set -- \ 214 "-Dorg.gradle.appname=$APP_BASE_NAME" \ 215 -classpath "$CLASSPATH" \ 216 org.gradle.wrapper.GradleWrapperMain \ 217 "$@" 218 219# Stop when "xargs" is not available. 220if ! command -v xargs >/dev/null 2>&1 221then 222 die "xargs is not available" 223fi 224 225# Use "xargs" to parse quoted args. 226# 227# With -n1 it outputs one arg per line, with the quotes and backslashes removed. 228# 229# In Bash we could simply go: 230# 231# readarray ARGS < <( xargs -n1 <<<"$var" ) && 232# set -- "${ARGS[@]}" "$@" 233# 234# but POSIX shell has neither arrays nor command substitution, so instead we 235# post-process each arg (as a line of input to sed) to backslash-escape any 236# character that might be a shell metacharacter, then use eval to reverse 237# that process (while maintaining the separation between arguments), and wrap 238# the whole thing up as a single "set" statement. 239# 240# This will of course break if any of these variables contains a newline or 241# an unmatched quote. 242# 243 244eval "set -- $( 245 printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | 246 xargs -n1 | 247 sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | 248 tr '\n' ' ' 249 )" '"$@"' 250 251exec "$JAVACMD" "$@" 252