1 | #!/bin/sh
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2 |
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3 | #
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4 | # Copyright © 2015-2021 the original authors.
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5 | #
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6 | # Licensed under the Apache License, Version 2.0 (the "License");
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7 | # you may not use this file except in compliance with the License.
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8 | # You may obtain a copy of the License at
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9 | #
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10 | # https://www.apache.org/licenses/LICENSE-2.0
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11 | #
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12 | # Unless required by applicable law or agreed to in writing, software
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13 | # distributed under the License is distributed on an "AS IS" BASIS,
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14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 | # See the License for the specific language governing permissions and
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16 | # limitations under the License.
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17 | #
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18 |
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19 | ##############################################################################
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20 | #
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21 | # Gradle start up script for POSIX generated by Gradle.
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22 | #
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23 | # Important for running:
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24 | #
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25 | # (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
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26 | # noncompliant, but you have some other compliant shell such as ksh or
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27 | # bash, then to run this script, type that shell name before the whole
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28 | # command line, like:
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29 | #
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30 | # ksh Gradle
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31 | #
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32 | # Busybox and similar reduced shells will NOT work, because this script
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33 | # requires all of these POSIX shell features:
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34 | # * functions;
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35 | # * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
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36 | # «${var#prefix}», «${var%suffix}», and «$( cmd )»;
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37 | # * compound commands having a testable exit status, especially «case»;
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38 | # * various built-in commands including «command», «set», and «ulimit».
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39 | #
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40 | # Important for patching:
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41 | #
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42 | # (2) This script targets any POSIX shell, so it avoids extensions provided
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43 | # by Bash, Ksh, etc; in particular arrays are avoided.
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44 | #
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45 | # The "traditional" practice of packing multiple parameters into a
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46 | # space-separated string is a well documented source of bugs and security
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47 | # problems, so this is (mostly) avoided, by progressively accumulating
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48 | # options in "$@", and eventually passing that to Java.
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49 | #
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50 | # Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
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51 | # and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
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52 | # see the in-line comments for details.
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53 | #
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54 | # There are tweaks for specific operating systems such as AIX, CygWin,
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55 | # Darwin, MinGW, and NonStop.
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56 | #
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57 | # (3) This script is generated from the Groovy template
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58 | # https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
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59 | # within the Gradle project.
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60 | #
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61 | # You can find Gradle at https://github.com/gradle/gradle/.
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62 | #
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63 | ##############################################################################
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64 |
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65 | # Attempt to set APP_HOME
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66 |
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67 | # Resolve links: $0 may be a link
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68 | app_path=$0
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69 |
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70 | # Need this for daisy-chained symlinks.
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71 | while
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72 | APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
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73 | [ -h "$app_path" ]
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74 | do
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75 | ls=$( ls -ld "$app_path" )
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76 | link=${ls#*' -> '}
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77 | case $link in #(
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78 | /*) app_path=$link ;; #(
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79 | *) app_path=$APP_HOME$link ;;
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80 | esac
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81 | done
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82 |
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83 | APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
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84 |
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85 | APP_NAME="Gradle"
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86 | APP_BASE_NAME=${0##*/}
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87 |
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88 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
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89 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
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90 |
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91 | # Use the maximum available, or set MAX_FD != -1 to use that value.
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92 | MAX_FD=maximum
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93 |
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94 | warn () {
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95 | echo "$*"
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96 | } >&2
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97 |
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98 | die () {
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99 | echo
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100 | echo "$*"
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101 | echo
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102 | exit 1
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103 | } >&2
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104 |
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105 | # OS specific support (must be 'true' or 'false').
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106 | cygwin=false
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107 | msys=false
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108 | darwin=false
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109 | nonstop=false
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110 | case "$( uname )" in #(
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111 | CYGWIN* ) cygwin=true ;; #(
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112 | Darwin* ) darwin=true ;; #(
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113 | MSYS* | MINGW* ) msys=true ;; #(
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114 | NONSTOP* ) nonstop=true ;;
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115 | esac
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116 |
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117 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
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118 |
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119 |
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120 | # Determine the Java command to use to start the JVM.
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121 | if [ -n "$JAVA_HOME" ] ; then
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122 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
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123 | # IBM's JDK on AIX uses strange locations for the executables
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124 | JAVACMD=$JAVA_HOME/jre/sh/java
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125 | else
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126 | JAVACMD=$JAVA_HOME/bin/java
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127 | fi
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128 | if [ ! -x "$JAVACMD" ] ; then
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129 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
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130 |
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131 | Please set the JAVA_HOME variable in your environment to match the
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132 | location of your Java installation."
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133 | fi
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134 | else
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135 | JAVACMD=java
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136 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
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137 |
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138 | Please set the JAVA_HOME variable in your environment to match the
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139 | location of your Java installation."
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140 | fi
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141 |
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142 | # Increase the maximum file descriptors if we can.
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143 | if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
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144 | case $MAX_FD in #(
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145 | max*)
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146 | MAX_FD=$( ulimit -H -n ) ||
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147 | warn "Could not query maximum file descriptor limit"
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148 | esac
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149 | case $MAX_FD in #(
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150 | '' | soft) :;; #(
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151 | *)
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152 | ulimit -n "$MAX_FD" ||
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153 | warn "Could not set maximum file descriptor limit to $MAX_FD"
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154 | esac
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155 | fi
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156 |
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157 | # Collect all arguments for the java command, stacking in reverse order:
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158 | # * args from the command line
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159 | # * the main class name
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160 | # * -classpath
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161 | # * -D...appname settings
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162 | # * --module-path (only if needed)
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163 | # * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
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164 |
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165 | # For Cygwin or MSYS, switch paths to Windows format before running java
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166 | if "$cygwin" || "$msys" ; then
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167 | APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
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168 | CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
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169 |
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170 | JAVACMD=$( cygpath --unix "$JAVACMD" )
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171 |
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172 | # Now convert the arguments - kludge to limit ourselves to /bin/sh
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173 | for arg do
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174 | if
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175 | case $arg in #(
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176 | -*) false ;; # don't mess with options #(
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177 | /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
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178 | [ -e "$t" ] ;; #(
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179 | *) false ;;
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180 | esac
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181 | then
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182 | arg=$( cygpath --path --ignore --mixed "$arg" )
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183 | fi
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184 | # Roll the args list around exactly as many times as the number of
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185 | # args, so each arg winds up back in the position where it started, but
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186 | # possibly modified.
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187 | #
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188 | # NB: a `for` loop captures its iteration list before it begins, so
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189 | # changing the positional parameters here affects neither the number of
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190 | # iterations, nor the values presented in `arg`.
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191 | shift # remove old arg
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192 | set -- "$@" "$arg" # push replacement arg
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193 | done
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194 | fi
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195 |
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196 | # Collect all arguments for the java command;
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197 | # * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
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198 | # shell script including quotes and variable substitutions, so put them in
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199 | # double quotes to make sure that they get re-expanded; and
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200 | # * put everything else in single quotes, so that it's not re-expanded.
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201 |
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202 | set -- \
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203 | "-Dorg.gradle.appname=$APP_BASE_NAME" \
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204 | -classpath "$CLASSPATH" \
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205 | org.gradle.wrapper.GradleWrapperMain \
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206 | "$@"
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207 |
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208 | # Use "xargs" to parse quoted args.
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209 | #
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210 | # With -n1 it outputs one arg per line, with the quotes and backslashes removed.
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211 | #
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212 | # In Bash we could simply go:
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213 | #
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214 | # readarray ARGS < <( xargs -n1 <<<"$var" ) &&
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215 | # set -- "${ARGS[@]}" "$@"
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216 | #
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217 | # but POSIX shell has neither arrays nor command substitution, so instead we
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218 | # post-process each arg (as a line of input to sed) to backslash-escape any
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219 | # character that might be a shell metacharacter, then use eval to reverse
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220 | # that process (while maintaining the separation between arguments), and wrap
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221 | # the whole thing up as a single "set" statement.
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222 | #
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223 | # This will of course break if any of these variables contains a newline or
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224 | # an unmatched quote.
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225 | #
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226 |
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227 | eval "set -- $(
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228 | printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
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229 | xargs -n1 |
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230 | sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
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231 | tr '\n' ' '
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232 | )" '"$@"'
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233 |
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234 | exec "$JAVACMD" "$@"
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