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=${0##*/}
86APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
87
88# Use the maximum available, or set MAX_FD != -1 to use that value.
89MAX_FD=maximum
90
91warn () {
92    echo "$*"
93} >&2
94
95die () {
96    echo
97    echo "$*"
98    echo
99    exit 1
100} >&2
101
102# OS specific support (must be 'true' or 'false').
103cygwin=false
104msys=false
105darwin=false
106nonstop=false
107case "$( uname )" in                #(
108  CYGWIN* )         cygwin=true  ;; #(
109  Darwin* )         darwin=true  ;; #(
110  MSYS* | MINGW* )  msys=true    ;; #(
111  NONSTOP* )        nonstop=true ;;
112esac
113
114CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
115
116
117# Determine the Java command to use to start the JVM.
118if [ -n "$JAVA_HOME" ] ; then
119    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
120        # IBM's JDK on AIX uses strange locations for the executables
121        JAVACMD=$JAVA_HOME/jre/sh/java
122    else
123        JAVACMD=$JAVA_HOME/bin/java
124    fi
125    if [ ! -x "$JAVACMD" ] ; then
126        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
127
128Please set the JAVA_HOME variable in your environment to match the
129location of your Java installation."
130    fi
131else
132    JAVACMD=java
133    if ! command -v java >/dev/null 2>&1
134    then
135        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
136
137Please set the JAVA_HOME variable in your environment to match the
138location of your Java installation."
139    fi
140fi
141
142# Increase the maximum file descriptors if we can.
143if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
144    case $MAX_FD in #(
145      max*)
146        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
147        # shellcheck disable=SC3045
148        MAX_FD=$( ulimit -H -n ) ||
149            warn "Could not query maximum file descriptor limit"
150    esac
151    case $MAX_FD in  #(
152      '' | soft) :;; #(
153      *)
154        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
155        # shellcheck disable=SC3045
156        ulimit -n "$MAX_FD" ||
157            warn "Could not set maximum file descriptor limit to $MAX_FD"
158    esac
159fi
160
161# Collect all arguments for the java command, stacking in reverse order:
162#   * args from the command line
163#   * the main class name
164#   * -classpath
165#   * -D...appname settings
166#   * --module-path (only if needed)
167#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
168
169# For Cygwin or MSYS, switch paths to Windows format before running java
170if "$cygwin" || "$msys" ; then
171    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
172    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
173
174    JAVACMD=$( cygpath --unix "$JAVACMD" )
175
176    # Now convert the arguments - kludge to limit ourselves to /bin/sh
177    for arg do
178        if
179            case $arg in                                #(
180              -*)   false ;;                            # don't mess with options #(
181              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
182                    [ -e "$t" ] ;;                      #(
183              *)    false ;;
184            esac
185        then
186            arg=$( cygpath --path --ignore --mixed "$arg" )
187        fi
188        # Roll the args list around exactly as many times as the number of
189        # args, so each arg winds up back in the position where it started, but
190        # possibly modified.
191        #
192        # NB: a `for` loop captures its iteration list before it begins, so
193        # changing the positional parameters here affects neither the number of
194        # iterations, nor the values presented in `arg`.
195        shift                   # remove old arg
196        set -- "$@" "$arg"      # push replacement arg
197    done
198fi
199
200
201# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
202DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
203
204# Collect all arguments for the java command;
205#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
206#     shell script including quotes and variable substitutions, so put them in
207#     double quotes to make sure that they get re-expanded; and
208#   * put everything else in single quotes, so that it's not re-expanded.
209
210set -- \
211        "-Dorg.gradle.appname=$APP_BASE_NAME" \
212        -classpath "$CLASSPATH" \
213        org.gradle.wrapper.GradleWrapperMain \
214        "$@"
215
216# Stop when "xargs" is not available.
217if ! command -v xargs >/dev/null 2>&1
218then
219    die "xargs is not available"
220fi
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
241eval "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
248exec "$JAVACMD" "$@"
249