gradlew raw
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 # 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
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='-Dfile.encoding=UTF-8 "-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 "$JAVACMD" "$@"
249