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 "${APP_HOME:-./}" > /dev/null && printf '%s 90' "$PWD" ) || exit 91 92# Use the maximum available, or set MAX_FD != -1 to use that value. 93MAX_FD=maximum 94 95warn () { 96 echo "$*" 97} >&2 98 99die () { 100 echo 101 echo "$*" 102 echo 103 exit 1 104} >&2 105 106# OS specific support (must be 'true' or 'false'). 107cygwin=false 108msys=false 109darwin=false 110nonstop=false 111case "$( uname )" in #( 112 CYGWIN* ) cygwin=true ;; #( 113 Darwin* ) darwin=true ;; #( 114 MSYS* | MINGW* ) msys=true ;; #( 115 NONSTOP* ) nonstop=true ;; 116esac 117 118CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 119 120 121# Determine the Java command to use to start the JVM. 122if [ -n "$JAVA_HOME" ] ; then 123 if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 124 # IBM's JDK on AIX uses strange locations for the executables 125 JAVACMD=$JAVA_HOME/jre/sh/java 126 else 127 JAVACMD=$JAVA_HOME/bin/java 128 fi 129 if [ ! -x "$JAVACMD" ] ; then 130 die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 131 132Please set the JAVA_HOME variable in your environment to match the 133location of your Java installation." 134 fi 135else 136 JAVACMD=java 137 if ! command -v java >/dev/null 2>&1 138 then 139 die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 140 141Please set the JAVA_HOME variable in your environment to match the 142location of your Java installation." 143 fi 144fi 145 146# Increase the maximum file descriptors if we can. 147if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then 148 case $MAX_FD in #( 149 max*) 150 # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. 151 # shellcheck disable=SC2039,SC3045 152 MAX_FD=$( ulimit -H -n ) || 153 warn "Could not query maximum file descriptor limit" 154 esac 155 case $MAX_FD in #( 156 '' | soft) :;; #( 157 *) 158 # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. 159 # shellcheck disable=SC2039,SC3045 160 ulimit -n "$MAX_FD" || 161 warn "Could not set maximum file descriptor limit to $MAX_FD" 162 esac 163fi 164 165# Collect all arguments for the java command, stacking in reverse order: 166# * args from the command line 167# * the main class name 168# * -classpath 169# * -D...appname settings 170# * --module-path (only if needed) 171# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. 172 173# For Cygwin or MSYS, switch paths to Windows format before running java 174if "$cygwin" || "$msys" ; then 175 APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) 176 CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) 177 178 JAVACMD=$( cygpath --unix "$JAVACMD" ) 179 180 # Now convert the arguments - kludge to limit ourselves to /bin/sh 181 for arg do 182 if 183 case $arg in #( 184 -*) false ;; # don't mess with options #( 185 /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath 186 [ -e "$t" ] ;; #( 187 *) false ;; 188 esac 189 then 190 arg=$( cygpath --path --ignore --mixed "$arg" ) 191 fi 192 # Roll the args list around exactly as many times as the number of 193 # args, so each arg winds up back in the position where it started, but 194 # possibly modified. 195 # 196 # NB: a `for` loop captures its iteration list before it begins, so 197 # changing the positional parameters here affects neither the number of 198 # iterations, nor the values presented in `arg`. 199 shift # remove old arg 200 set -- "$@" "$arg" # push replacement arg 201 done 202fi 203 204 205# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 206DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' 207 208# Collect all arguments for the java command: 209# * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments, 210# and any embedded shellness will be escaped. 211# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be 212# treated as '${Hostname}' itself on the command line. 213 214set -- \ 215 "-Dorg.gradle.appname=$APP_BASE_NAME" \ 216 -classpath "$CLASSPATH" \ 217 org.gradle.wrapper.GradleWrapperMain \ 218 "$@" 219 220# Stop when "xargs" is not available. 221if ! command -v xargs >/dev/null 2>&1 222then 223 die "xargs is not available" 224fi 225 226# Use "xargs" to parse quoted args. 227# 228# With -n1 it outputs one arg per line, with the quotes and backslashes removed. 229# 230# In Bash we could simply go: 231# 232# readarray ARGS < <( xargs -n1 <<<"$var" ) && 233# set -- "${ARGS[@]}" "$@" 234# 235# but POSIX shell has neither arrays nor command substitution, so instead we 236# post-process each arg (as a line of input to sed) to backslash-escape any 237# character that might be a shell metacharacter, then use eval to reverse 238# that process (while maintaining the separation between arguments), and wrap 239# the whole thing up as a single "set" statement. 240# 241# This will of course break if any of these variables contains a newline or 242# an unmatched quote. 243# 244 245eval "set -- $( 246 printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | 247 xargs -n1 | 248 sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | 249 tr '\n' ' ' 250 )" '"$@"' 251 252exec "$JAVACMD" "$@" 253