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/master/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
83APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
84
85APP_NAME="Gradle"
86APP_BASE_NAME=${0##*/}
87
88# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
89DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
90
91# Use the maximum available, or set MAX_FD != -1 to use that value.
92MAX_FD=maximum
93
94warn () {
95 echo "$*"
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: $JAVA_HOME
130
131Please set the JAVA_HOME variable in your environment to match the
132location of your Java installation."
133 fi
134else
135 JAVACMD=java
136 which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
137
138Please set the JAVA_HOME variable in your environment to match the
139location of your Java installation."
140fi
141
142# Increase the maximum file descriptors if we can.
143if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
144 case $MAX_FD in #(
145 max*)
146 MAX_FD=$( ulimit -H -n ) ||
147 warn "Could not query maximum file descriptor limit"
148 esac
149 case $MAX_FD in #(
150 '' | soft) :;; #(
151 *)
152 ulimit -n "$MAX_FD" ||
153 warn "Could not set maximum file descriptor limit to $MAX_FD"
154 esac
155fi
156
157# Collect all arguments for the java command, stacking in reverse order:
158# * args from the command line
159# * the main class name
160# * -classpath
161# * -D...appname settings
162# * --module-path (only if needed)
163# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
164
165# For Cygwin or MSYS, switch paths to Windows format before running java
166if "$cygwin" || "$msys" ; then
167 APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
168 CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
169
170 JAVACMD=$( cygpath --unix "$JAVACMD" )
171
172 # Now convert the arguments - kludge to limit ourselves to /bin/sh
173 for arg do
174 if
175 case $arg in #(
176 -*) false ;; # don't mess with options #(
177 /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
178 [ -e "$t" ] ;; #(
179 *) false ;;
180 esac
181 then
182 arg=$( cygpath --path --ignore --mixed "$arg" )
183 fi
184 # Roll the args list around exactly as many times as the number of
185 # args, so each arg winds up back in the position where it started, but
186 # possibly modified.
187 #
188 # NB: a `for` loop captures its iteration list before it begins, so
189 # changing the positional parameters here affects neither the number of
190 # iterations, nor the values presented in `arg`.
191 shift # remove old arg
192 set -- "$@" "$arg" # push replacement arg
193 done
194fi
195
196# Collect all arguments for the java command;
197# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
198# shell script including quotes and variable substitutions, so put them in
199# double quotes to make sure that they get re-expanded; and
200# * put everything else in single quotes, so that it's not re-expanded.
201
202set -- \
203 "-Dorg.gradle.appname=$APP_BASE_NAME" \
204 -classpath "$CLASSPATH" \
205 org.gradle.wrapper.GradleWrapperMain \
206 "$@"
207
208# Use "xargs" to parse quoted args.
209#
210# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
211#
212# In Bash we could simply go:
213#
214# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
215# set -- "${ARGS[@]}" "$@"
216#
217# but POSIX shell has neither arrays nor command substitution, so instead we
218# post-process each arg (as a line of input to sed) to backslash-escape any
219# character that might be a shell metacharacter, then use eval to reverse
220# that process (while maintaining the separation between arguments), and wrap
221# the whole thing up as a single "set" statement.
222#
223# This will of course break if any of these variables contains a newline or
224# an unmatched quote.
225#
226
227eval "set -- $(
228 printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
229 xargs -n1 |
230 sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
231 tr '\n' ' '
232 )" '"$@"'
233
234exec "$JAVACMD" "$@"
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