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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
19##############################################################################
20#
21# Gradle start up script for POSIX generated by Gradle.
22#
23# Important for running:
24#
25# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
26# noncompliant, but you have some other compliant shell such as ksh or
27# bash, then to run this script, type that shell name before the whole
28# command line, like:
29#
30# ksh Gradle
31#
32# Busybox and similar reduced shells will NOT work, because this script
33# requires all of these POSIX shell features:
34# * functions;
35# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
36# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
37# * compound commands having a testable exit status, especially «case»;
38# * various built-in commands including «command», «set», and «ulimit».
39#
40# Important for patching:
41#
42# (2) This script targets any POSIX shell, so it avoids extensions provided
43# by Bash, Ksh, etc; in particular arrays are avoided.
44#
45# The "traditional" practice of packing multiple parameters into a
46# space-separated string is a well documented source of bugs and security
47# problems, so this is (mostly) avoided, by progressively accumulating
48# options in "$@", and eventually passing that to Java.
49#
50# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
51# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
52# see the in-line comments for details.
53#
54# There are tweaks for specific operating systems such as AIX, CygWin,
55# Darwin, MinGW, and NonStop.
56#
57# (3) This script is generated from the Groovy template
58# https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
59# within the Gradle project.
60#
61# You can find Gradle at https://github.com/gradle/gradle/.
62#
63##############################################################################
64
65# Attempt to set APP_HOME
66
67# Resolve links: $0 may be a link
68app_path=$0
69
70# Need this for daisy-chained symlinks.
71while
72 APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
73 [ -h "$app_path" ]
74do
75 ls=$( ls -ld "$app_path" )
76 link=${ls#*' -> '}
77 case $link in #(
78 /*) app_path=$link ;; #(
79 *) app_path=$APP_HOME$link ;;
80 esac
81done
82
83# This is normally unused
84# shellcheck disable=SC2034
85APP_BASE_NAME=${0##*/}
86# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
87APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
88
89# Use the maximum available, or set MAX_FD != -1 to use that value.
90MAX_FD=maximum
91
92warn () {
93 echo "$*"
94} >&2
95
96die () {
97 echo
98 echo "$*"
99 echo
100 exit 1
101} >&2
102
103# OS specific support (must be 'true' or 'false').
104cygwin=false
105msys=false
106darwin=false
107nonstop=false
108case "$( uname )" in #(
109 CYGWIN* ) cygwin=true ;; #(
110 Darwin* ) darwin=true ;; #(
111 MSYS* | MINGW* ) msys=true ;; #(
112 NONSTOP* ) nonstop=true ;;
113esac
114
115CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
116
117
118# Determine the Java command to use to start the JVM.
119if [ -n "$JAVA_HOME" ] ; then
120 if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
121 # IBM's JDK on AIX uses strange locations for the executables
122 JAVACMD=$JAVA_HOME/jre/sh/java
123 else
124 JAVACMD=$JAVA_HOME/bin/java
125 fi
126 if [ ! -x "$JAVACMD" ] ; then
127 die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
128
129Please set the JAVA_HOME variable in your environment to match the
130location of your Java installation."
131 fi
132else
133 JAVACMD=java
134 if ! command -v java >/dev/null 2>&1
135 then
136 die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
137
138Please set the JAVA_HOME variable in your environment to match the
139location of your Java installation."
140 fi
141fi
142
143# Increase the maximum file descriptors if we can.
144if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
145 case $MAX_FD in #(
146 max*)
147 # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
148 # shellcheck disable=SC3045
149 MAX_FD=$( ulimit -H -n ) ||
150 warn "Could not query maximum file descriptor limit"
151 esac
152 case $MAX_FD in #(
153 '' | soft) :;; #(
154 *)
155 # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
156 # shellcheck disable=SC3045
157 ulimit -n "$MAX_FD" ||
158 warn "Could not set maximum file descriptor limit to $MAX_FD"
159 esac
160fi
161
162# Collect all arguments for the java command, stacking in reverse order:
163# * args from the command line
164# * the main class name
165# * -classpath
166# * -D...appname settings
167# * --module-path (only if needed)
168# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
169
170# For Cygwin or MSYS, switch paths to Windows format before running java
171if "$cygwin" || "$msys" ; then
172 APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
173 CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
174
175 JAVACMD=$( cygpath --unix "$JAVACMD" )
176
177 # Now convert the arguments - kludge to limit ourselves to /bin/sh
178 for arg do
179 if
180 case $arg in #(
181 -*) false ;; # don't mess with options #(
182 /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
183 [ -e "$t" ] ;; #(
184 *) false ;;
185 esac
186 then
187 arg=$( cygpath --path --ignore --mixed "$arg" )
188 fi
189 # Roll the args list around exactly as many times as the number of
190 # args, so each arg winds up back in the position where it started, but
191 # possibly modified.
192 #
193 # NB: a `for` loop captures its iteration list before it begins, so
194 # changing the positional parameters here affects neither the number of
195 # iterations, nor the values presented in `arg`.
196 shift # remove old arg
197 set -- "$@" "$arg" # push replacement arg
198 done
199fi
200
201
202# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
203DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
204
205# Collect all arguments for the java command;
206# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
207# shell script including quotes and variable substitutions, so put them in
208# double quotes to make sure that they get re-expanded; and
209# * put everything else in single quotes, so that it's not re-expanded.
210
211set -- \
212 "-Dorg.gradle.appname=$APP_BASE_NAME" \
213 -classpath "$CLASSPATH" \
214 org.gradle.wrapper.GradleWrapperMain \
215 "$@"
216
217# Stop when "xargs" is not available.
218if ! command -v xargs >/dev/null 2>&1
219then
220 die "xargs is not available"
221fi
222
223# Use "xargs" to parse quoted args.
224#
225# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
226#
227# In Bash we could simply go:
228#
229# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
230# set -- "${ARGS[@]}" "$@"
231#
232# but POSIX shell has neither arrays nor command substitution, so instead we
233# post-process each arg (as a line of input to sed) to backslash-escape any
234# character that might be a shell metacharacter, then use eval to reverse
235# that process (while maintaining the separation between arguments), and wrap
236# the whole thing up as a single "set" statement.
237#
238# This will of course break if any of these variables contains a newline or
239# an unmatched quote.
240#
241
242eval "set -- $(
243 printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
244 xargs -n1 |
245 sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
246 tr '\n' ' '
247 )" '"$@"'
248
249exec "$JAVACMD" "$@"