gradlew

   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 # 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 "${APP_HOME:-./}" > /dev/null && printf '%s
  90 ' "$PWD" ) || exit
  91
  92 # Use the maximum available, or set MAX_FD != -1 to use that value.
  93 MAX_FD=maximum
  94
  95 warn () {
  96     echo "$*"
  97 } >&2
  98
  99 die () {
 100     echo
 101     echo "$*"
 102     echo
 103     exit 1
 104 } >&2
 105
 106 # OS specific support (must be 'true' or 'false').
 107 cygwin=false
 108 msys=false
 109 darwin=false
 110 nonstop=false
 111 case "$( uname )" in                #(
 112   CYGWIN* )         cygwin=true  ;; #(
 113   Darwin* )         darwin=true  ;; #(
 114   MSYS* | MINGW* )  msys=true    ;; #(
 115   NONSTOP* )        nonstop=true ;;
 116 esac
 117
 118 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 119
 120
 121 # Determine the Java command to use to start the JVM.
 122 if [ -n "$JAVA_HOME" ] ; then
 123     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
 124         # IBM's JDK on AIX uses strange locations for the executables
 125         JAVACMD=$JAVA_HOME/jre/sh/java
 126     else
 127         JAVACMD=$JAVA_HOME/bin/java
 128     fi
 129     if [ ! -x "$JAVACMD" ] ; then
 130         die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
 131
 132 Please set the JAVA_HOME variable in your environment to match the
 133 location of your Java installation."
 134     fi
 135 else
 136     JAVACMD=java
 137     if ! command -v java >/dev/null 2>&1
 138     then
 139         die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 140
 141 Please set the JAVA_HOME variable in your environment to match the
 142 location of your Java installation."
 143     fi
 144 fi
 145
 146 # Increase the maximum file descriptors if we can.
 147 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
 148     case $MAX_FD in #(
 149       max*)
 150         # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
 151         # shellcheck disable=SC2039,SC3045
 152         MAX_FD=$( ulimit -H -n ) ||
 153             warn "Could not query maximum file descriptor limit"
 154     esac
 155     case $MAX_FD in  #(
 156       '' | soft) :;; #(
 157       *)
 158         # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
 159         # shellcheck disable=SC2039,SC3045
 160         ulimit -n "$MAX_FD" ||
 161             warn "Could not set maximum file descriptor limit to $MAX_FD"
 162     esac
 163 fi
 164
 165 # Collect all arguments for the java command, stacking in reverse order:
 166 #   * args from the command line
 167 #   * the main class name
 168 #   * -classpath
 169 #   * -D...appname settings
 170 #   * --module-path (only if needed)
 171 #   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
 172
 173 # For Cygwin or MSYS, switch paths to Windows format before running java
 174 if "$cygwin" || "$msys" ; then
 175     APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
 176     CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
 177
 178     JAVACMD=$( cygpath --unix "$JAVACMD" )
 179
 180     # Now convert the arguments - kludge to limit ourselves to /bin/sh
 181     for arg do
 182         if
 183             case $arg in                                #(
 184               -*)   false ;;                            # don't mess with options #(
 185               /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
 186                     [ -e "$t" ] ;;                      #(
 187               *)    false ;;
 188             esac
 189         then
 190             arg=$( cygpath --path --ignore --mixed "$arg" )
 191         fi
 192         # Roll the args list around exactly as many times as the number of
 193         # args, so each arg winds up back in the position where it started, but
 194         # possibly modified.
 195         #
 196         # NB: a `for` loop captures its iteration list before it begins, so
 197         # changing the positional parameters here affects neither the number of
 198         # iterations, nor the values presented in `arg`.
 199         shift                   # remove old arg
 200         set -- "$@" "$arg"      # push replacement arg
 201     done
 202 fi
 203
 204
 205 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 206 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 207
 208 # Collect all arguments for the java command:
 209 #   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
 210 #     and any embedded shellness will be escaped.
 211 #   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
 212 #     treated as '${Hostname}' itself on the command line.
 213
 214 set -- \
 215         "-Dorg.gradle.appname=$APP_BASE_NAME" \
 216         -classpath "$CLASSPATH" \
 217         org.gradle.wrapper.GradleWrapperMain \
 218         "$@"
 219
 220 # Stop when "xargs" is not available.
 221 if ! command -v xargs >/dev/null 2>&1
 222 then
 223     die "xargs is not available"
 224 fi
 225
 226 # Use "xargs" to parse quoted args.
 227 #
 228 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.
 229 #
 230 # In Bash we could simply go:
 231 #
 232 #   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
 233 #   set -- "${ARGS[@]}" "$@"
 234 #
 235 # but POSIX shell has neither arrays nor command substitution, so instead we
 236 # post-process each arg (as a line of input to sed) to backslash-escape any
 237 # character that might be a shell metacharacter, then use eval to reverse
 238 # that process (while maintaining the separation between arguments), and wrap
 239 # the whole thing up as a single "set" statement.
 240 #
 241 # This will of course break if any of these variables contains a newline or
 242 # an unmatched quote.
 243 #
 244
 245 eval "set -- $(
 246         printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
 247         xargs -n1 |
 248         sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
 249         tr '\n' ' '
 250     )" '"$@"'
 251
 252 exec "$JAVACMD" "$@"