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
  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
  68 app_path=$0
  69
  70 # Need this for daisy-chained symlinks.
  71 while
  72     APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
  73     [ -h "$app_path" ]
  74 do
  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
  81 done
  82
  83 # This is normally unused
  84 # shellcheck disable=SC2034
  85 APP_BASE_NAME=${0##*/}
  86 # Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
  87 APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
  88
  89 # Use the maximum available, or set MAX_FD != -1 to use that value.
  90 MAX_FD=maximum
  91
  92 warn () {
  93     echo "$*"
  94 } >&2
  95
  96 die () {
  97     echo
  98     echo "$*"
  99     echo
 100     exit 1
 101 } >&2
 102
 103 # OS specific support (must be 'true' or 'false').
 104 cygwin=false
 105 msys=false
 106 darwin=false
 107 nonstop=false
 108 case "$( uname )" in                #(
 109   CYGWIN* )         cygwin=true  ;; #(
 110   Darwin* )         darwin=true  ;; #(
 111   MSYS* | MINGW* )  msys=true    ;; #(
 112   NONSTOP* )        nonstop=true ;;
 113 esac
 114
 115 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 116
 117
 118 # Determine the Java command to use to start the JVM.
 119 if [ -n "$JAVA_HOME" ] ; then
 120     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
 121         # IBM's JDK on AIX uses strange locations for the executables
 122         JAVACMD=$JAVA_HOME/jre/sh/java
 123     else
 124         JAVACMD=$JAVA_HOME/bin/java
 125     fi
 126     if [ ! -x "$JAVACMD" ] ; then
 127         die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
 128
 129 Please set the JAVA_HOME variable in your environment to match the
 130 location of your Java installation."
 131     fi
 132 else
 133     JAVACMD=java
 134     if ! command -v java >/dev/null 2>&1
 135     then
 136         die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 137
 138 Please set the JAVA_HOME variable in your environment to match the
 139 location of your Java installation."
 140     fi
 141 fi
 142
 143 # Increase the maximum file descriptors if we can.
 144 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
 145     case $MAX_FD in #(
 146       max*)
 147         # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
 148         # shellcheck disable=SC2039,SC3045
 149         MAX_FD=$( ulimit -H -n ) ||
 150             warn "Could not query maximum file descriptor limit"
 151     esac
 152     case $MAX_FD in  #(
 153       '' | soft) :;; #(
 154       *)
 155         # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
 156         # shellcheck disable=SC2039,SC3045
 157         ulimit -n "$MAX_FD" ||
 158             warn "Could not set maximum file descriptor limit to $MAX_FD"
 159     esac
 160 fi
 161
 162 # Collect all arguments for the java command, stacking in reverse order:
 163 #   * args from the command line
 164 #   * the main class name
 165 #   * -classpath
 166 #   * -D...appname settings
 167 #   * --module-path (only if needed)
 168 #   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
 169
 170 # For Cygwin or MSYS, switch paths to Windows format before running java
 171 if "$cygwin" || "$msys" ; then
 172     APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
 173     CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
 174
 175     JAVACMD=$( 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, 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=$APP_BASE_NAME" \
 213         -classpath "$CLASSPATH" \
 214         org.gradle.wrapper.GradleWrapperMain \
 215         "$@"
 216
 217 # Stop when "xargs" is not available.
 218 if ! command -v xargs >/dev/null 2>&1
 219 then
 220     die "xargs is not available"
 221 fi
 222
 223 # Use "xargs" to parse quoted args.
 224 #
 225 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.
 226 #
 227 # In Bash we could simply go:
 228 #
 229 #   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
 230 #   set -- "${ARGS[@]}" "$@"
 231 #
 232 # but POSIX shell has neither arrays nor command substitution, so instead we
 233 # post-process each arg (as a line of input to sed) to backslash-escape any
 234 # character that might be a shell metacharacter, then use eval to reverse
 235 # that process (while maintaining the separation between arguments), and wrap
 236 # the whole thing up as a single "set" statement.
 237 #
 238 # This will of course break if any of these variables contains a newline or
 239 # an unmatched quote.
 240 #
 241
 242 eval "set -- $(
 243         printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
 244         xargs -n1 |
 245         sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
 246         tr '\n' ' '
 247     )" '"$@"'
 248
 249 exec "$JAVACMD" "$@"