📄 gradlew

jabjab / gradlew

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1	#!/bin/sh
2
3	#
4	# Copyright © 2015 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	# gradlew 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 gradlew
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/3d91ce3b8caaf77ad09f381f43615b715b53f72c/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
70	app_path=$0
71
72	# Need this for daisy-chained symlinks.
73	while
74	APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
75	[ -h "$app_path" ]
76	do
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
83	done
84
85	# This is normally unused
86	# shellcheck disable=SC2034
87	APP_BASE_NAME=${0##*/}
88	# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
89	APP_HOME=$( 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.
92	MAX_FD=maximum
93
94	warn () {
95	echo "$*"
96	} >&2
97
98	die () {
99	echo
100	echo "$*"
101	echo
102	exit 1
103	} >&2
104
105	# OS specific support (must be 'true' or 'false').
106	cygwin=false
107	msys=false
108	darwin=false
109	nonstop=false
110	case "$( uname )" in #(
111	CYGWIN* ) cygwin=true ;; #(
112	Darwin* ) darwin=true ;; #(
113	MSYS* \| MINGW* ) msys=true ;; #(
114	NONSTOP* ) nonstop=true ;;
115	esac
116
117
118
119	# Determine the Java command to use to start the JVM.
120	if [ -n "$JAVA_HOME" ] ; then
121	if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
122	# IBM's JDK on AIX uses strange locations for the executables
123	JAVACMD=$JAVA_HOME/jre/sh/java
124	else
125	JAVACMD=$JAVA_HOME/bin/java
126	fi
127	if [ ! -x "$JAVACMD" ] ; then
128	die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
129
130	Please set the JAVA_HOME variable in your environment to match the
131	location of your Java installation."
132	fi
133	else
134	JAVACMD=java
135	if ! command -v java >/dev/null 2>&1
136	then
137	die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
138
139	Please set the JAVA_HOME variable in your environment to match the
140	location of your Java installation."
141	fi
142	fi
143
144	# Increase the maximum file descriptors if we can.
145	if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
146	case $MAX_FD in #(
147	max*)
148	# In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
149	# shellcheck disable=SC2039,SC3045
150	MAX_FD=$( ulimit -H -n ) \|\|
151	warn "Could not query maximum file descriptor limit"
152	esac
153	case $MAX_FD in #(
154	'' \| soft) :;; #(
155	*)
156	# In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
157	# shellcheck disable=SC2039,SC3045
158	ulimit -n "$MAX_FD" \|\|
159	warn "Could not set maximum file descriptor limit to $MAX_FD"
160	esac
161	fi
162
163	# Collect all arguments for the java command, stacking in reverse order:
164	# * args from the command line
165	# * the main class name
166	# * -classpath
167	# * -D...appname settings
168	# * --module-path (only if needed)
169	# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
170
171	# For Cygwin or MSYS, switch paths to Windows format before running java
172	if "$cygwin" \|\| "$msys" ; then
173	APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
174
175	JAVACMD=$( 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
199	fi
200
201
202	# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
203	DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
204
205	# Collect all arguments for the java command:
206	# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
207	# and any embedded shellness will be escaped.
208	# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
209	# treated as '${Hostname}' itself on the command line.
210
211	set -- \
212	"-Dorg.gradle.appname=$APP_BASE_NAME" \
213	-jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
214	"$@"
215
216	# Stop when "xargs" is not available.
217	if ! command -v xargs >/dev/null 2>&1
218	then
219	die "xargs is not available"
220	fi
221
222	# Use "xargs" to parse quoted args.
223	#
224	# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
225	#
226	# In Bash we could simply go:
227	#
228	# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
229	# set -- "${ARGS[@]}" "$@"
230	#
231	# but POSIX shell has neither arrays nor command substitution, so instead we
232	# post-process each arg (as a line of input to sed) to backslash-escape any
233	# character that might be a shell metacharacter, then use eval to reverse
234	# that process (while maintaining the separation between arguments), and wrap
235	# the whole thing up as a single "set" statement.
236	#
237	# This will of course break if any of these variables contains a newline or
238	# an unmatched quote.
239	#
240
241	eval "set -- $(
242	printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" \|
243	xargs -n1 \|
244	sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' \|
245	tr '\n' ' '
246	)" '"$@"'
247
248	exec "$JAVACMD" "$@"