626 lines
18 KiB
Bash
Executable File
626 lines
18 KiB
Bash
Executable File
#!/bin/bash
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# -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
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# See notice of copyright and license at end.
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# If you use this program for a #! script, please include the following
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# as the second line of the script:
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# See http://Yost.com/computers/compileAndGo
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# Bug: doesn't recompile if invoked file is a symlink. Fixed?
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# Needs a call to realpath.
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## Bug: The following fails for the cg command after fixing it to work for compileAndGo
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# Something about evaluation order of the variables in the source header.
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# compiler = gcc
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# compilerArgs = -O2 -o $cacheDir/$executableFilename $cacheDir/$sourceFilename
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if [ $# == 1 -a "$1" == --help ]; then
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echo "compileAndGo: see http://Yost.com/computers/compileAndGo"
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exit 0
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fi
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# The #! compileAndGo script that invoked us.
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# If $0 is a symlink, this is the invoked name, not the symlink referent name
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typeset -r commandFile="$1"
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pathOfDirPartOfExecPath() {
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if [[ -h "$1" ]] ; then
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local lsout="$(ls -l "$1")"
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local referent="${lsout#* -> }"
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pathOfDirPartOfExecPath "$referent"
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elif [[ -d "${1%/*}" ]] ; then
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echo "${1%/*}"
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else
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echo .
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fi
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}
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typeset -r commandDir="$(pathOfDirPartOfExecPath "$0")/"
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# If $0 is a symlink, this is the invoked name, not the symlink referent name
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ourName=${0##*/}
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#-------------------------------------------------------------------------------
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extensionToLanguage() {
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case "$1" in
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js)
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echo javascript
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;;
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java)
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echo java
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;;
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c)
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echo c
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;;
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cp | cpp | C | cxx | cc)
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echo c++
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;;
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*)
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;;
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esac
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}
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languageToCompiler() {
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case "$1" in
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javascript)
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echo jsc
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;;
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java)
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echo javac
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;;
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c)
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if [[ -x /usr/bin/gcc ]] ; then
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echo /usr/bin/gcc
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else
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echo /usr/bin/cc
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fi
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;;
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c++)
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echo /usr/bin/g++
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;;
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*)
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;;
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esac
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}
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echo2() {
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# This works for sh, ksh, and bash, but not zsh.
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echo "$@"
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}
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echoVariables() {
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echo 1>&2 $1
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if [[ ! $ourName == cg ]] ; then
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# Echo all but the builtins.
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echo 1>&2 "$(
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eval "$(
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echo "$cmdSetters" \
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| grep -v 'commandBasename
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commandDir
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sourceFilename
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language
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mainClass
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executableFilename
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compilerDir
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classPath
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compilerArgs
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linkerArgs
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execute
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firstArgIsCommandName
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verbose' \
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| sed "
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s,^eval,echo,
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s,=, = ,
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s,',,g
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"
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)" \
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| sed "
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s,= ,= ',
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s,$,',
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"
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)"
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else
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echo 1>&2 commandName = "$commandName"
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echo 1>&2 compiler = "$compiler"
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fi
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# Echo the builtins.
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echo 1>&2 commandBasename = "$commandBasename"
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echo 1>&2 commandDir = "$commandDir"
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echo 1>&2 sourceFilename = "$sourceFilename"
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echo 1>&2 language = "$language"
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echo 1>&2 mainClass = "$mainClass"
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echo 1>&2 executableFilename = "$executableFilename"
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echo 1>&2 compilerDir = "$compilerDir"
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echo 1>&2 classPath = "$classPath"
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echo 1>&2 compilerArgs = "$compilerArgs"
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echo 1>&2 linkerArgs = "$linkerArgs"
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echo 1>&2 execute = "$execute"
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echo 1>&2 firstArgIsCommandName = "$firstArgIsCommandName"
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echo 1>&2 verbose = "$verbose"
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}
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#-------------------------------------------------------------------------------
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# If we use zsh, we could do this:
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# zmodload zsh/stat
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# stat -F "%Y-%m-%d_%H-%M-%S" +mtime .
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ls-linux() {
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# 11742 2005-07-28 11:54:01.000000000
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(
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ls -dl --full-time --time-style=full-iso "$1" \
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| sed 's,.*[0-9] \([12][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]\) \([0-9][0-9]\):\([0-9][0-9]\):\([0-9][0-9]\).[0-9]* .*,\1.\2-\3-\4,'
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) 2> /dev/null
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}
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ls-oldlinux() {
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# 11742 Tue Mar 01 17:22:50 2005
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(
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ls -dl --full-time "$1" \
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| sed 's,.*[0-9] ... \(...\) \([0-9][0-9]\) \([0-9][0-9]\):\([0-9][0-9]\):\([0-9][0-9]\) \([12][0-9][0-9][0-9]\) .*,\4-\1-\2.\3-\5-\6,'
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) 2> /dev/null
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}
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ls-bsd() {
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# 11742 Jul 28 12:38:31 2005
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(
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ls -dlT "$1" \
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| awk '
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BEGIN {
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months["Jan"] = "01" ; months["Feb"] = "02" ; months["Mar"] = "03"
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months["Apr"] = "04" ; months["May"] = "05" ; months["Jun"] = "06"
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months["Jul"] = "07" ; months["Aug"] = "08" ; months["Sep"] = "09"
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months["Oct"] = "10" ; months["Nov"] = "11" ; months["Dec"] = "12"
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}
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{
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month = sprintf(months[$6]) ; day = $7 ; time = $8 ; year = $9 # What about Europe?
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gsub(":", "-", time)
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date = year "-" month "-" day "_" time
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print date
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}
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'
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) 2> /dev/null
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}
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#-------------------------------------------------------------------------------
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set -e
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sourceInput=
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case $ourName in
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cg)
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# Invoked as cg
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if [[ $# == 0 ]] ; then
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echo 1>&2 "Usage: cg sourcefile.<extension> [ args ... ]"
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exit 2
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fi
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sourceInput="$1"
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export commandName=${commandFile##*/}
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commandBasename="${commandName%.*}"
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commandExtension="${commandFile##*.}"
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sourceFilename=$commandName
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language=$(extensionToLanguage $commandExtension)
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compiler=$(languageToCompiler $language)
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;;
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cgs)
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sourceInput=/dev/stdin
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export commandName=$ourName
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commandBasename=$commandName
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compilerOpt="$1"
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case "$compilerOpt" in
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-jsc)
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sourceFileName=$commandName.js
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;;
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-javac | -gcj | -jikes)
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shift
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export commandName=$1
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commandBasename=$commandName
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sourceFileName=$commandName.java
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;;
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-gcc | -c99 | -c89 | -cc)
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sourceFileName=$commandName.c
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;;
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-g++)
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sourceFileName=$commandName.cp
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;;
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"")
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echo 1>&2 cgs: missing compiler option
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exit 2
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;;
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*)
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echo 1>&2 cgs: unknown compiler option: "$compilerOpt"
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exit 2
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;;
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esac
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compiler=${compilerOpt/-/}
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;;
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*)
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sourceInput=
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# Invoked as compileAndGo
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# Collect the variable declarations at the top of $commmandFile.
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declarations="$(
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sed -n '
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s,^[ ]*,,
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/^!#$/q
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/^compileAndGo/q
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/^[ ]*#/d
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s,^commandName,export commandName,
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/^echo[ ]/{
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s/$/ ;/p
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d
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}
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s,\$\({*commandBasename\),\\$\1,g
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s,\$\({*commandDir\),\\$\1,g
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s,\$\({*sourceFilename\),\\$\1,g
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s,\$\({*language\),\\$\1,g
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s,\$\({*mainClass\),\\$\1,g
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s,\$\({*executableFilename\),\\$\1,g
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s,\$\({*compilerDir\),\\$\1,g
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s,\$\({*classPath\),\\$\1,g
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s,\$\({*compilerArgs\),\\$\1,g
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s,\$\({*linkerArgs\),\\$\1,g
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s,\$\({*execute\),\\$\1,g
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s,\$\({*cacheDir\),\\$\1,g
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s,\$\({*firstArgIsCommandName\),\\$\1,g
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s,[ ]*=[ ]*,=",
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s,$," ;,
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p
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' "$commandFile"
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)"
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eval $declarations
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[[ ! -z ${commandName:="${1##*/}"} ]]
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commandBasename="${commandName%.*}"
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if (( 0$verbose >= 5 )) ; then
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echo 1>&2 \=== Declarations
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echo 1>&2 "$declarations"
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fi
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if [[ -z "$compiler" ]] ; then
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if [[ -z "$language" ]] ; then
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echo 1>&2 compileAndGo: compiler or language must be set
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trouble=true
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fi
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compiler=$(languageToCompiler $language)
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fi
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if [[ ! -z "$trouble" ]] ; then
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exit 2
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fi
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;;
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esac
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#-------------------------------------------------------------------------------
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# Collect the source code
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newsed() {
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local arg
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if sed --regex-extended < /dev/null >& /dev/null ; then
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arg=--regex-extended
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else
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arg=-E
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fi
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sed $arg "$@"
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}
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case "$sourceInput" in
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/dev/stdin)
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# from stdin
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sourceCode=$(cat)
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;;
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'')
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# from the end of $commandFile
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sourceCode=$(
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newsed '
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1,/^(!#|[ ]*compileAndGo)/s,.*,,
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' "$commandFile"
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)
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if [[ -z "$sourceCode" ]] ; then
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echo 1>&2 "$commandName: Missing '#!compileAndGo' line before source code starts."
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exit 2
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fi
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;;
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*)
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# from the filename as first argument
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sourceCode=$(cat $1)
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;;
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esac
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#-------------------------------------------------------------------------------
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# Construct the cacheDir variable.
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abi=$(uname -sm)
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abi=${abi// /-}
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# Why must I use `` instead of $() here?
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id=`
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case "$sourceInput" in
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/dev/stdin)
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local tmp=($(echo "$sourceCode" | cksum))
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echo ${tmp[0]}${tmp[1]}
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;;
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*)
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case "$abi" in
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Linux* | CYGWIN*)
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ls-linux "$1" \
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|| ls-oldlinux "$1"
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;;
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*)
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ls-bsd "$1" \
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|| ls-linux "$1" \
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|| ls-oldlinux "$1"
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;;
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esac \
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|| (
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local tmp=($(echo "$sourceCode" | cksum))
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echo ${tmp[0]}${tmp[1]}
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)
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;;
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esac
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`
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compilerPath=$(type -p "$compiler" 2> /dev/null) || compilerPath=$compiler
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realHOME=$(eval 'echo ~'$(whoami))
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if [[ -x $realHOME/Library/Caches ]] ; then
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# Mac OS X
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cacheDirRoot=$realHOME/Library/Caches/CompileAndGo
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else
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cacheDirRoot=$realHOME/.compileAndGo
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fi
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cacheDirParent=$cacheDirRoot/${commandName}
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cacheDir=$cacheDirParent/$abi/${id}_${compilerPath//\//-}
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#-------------------------------------------------------------------------------
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# Apply defaults and then set the variables again.
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compilerName=${compiler##*/}
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# Some settings common among different compiler groups:
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case $compilerName in
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javac* | jikes*)
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[[ ! -z ${mainClass:="$commandBasename"} ]]
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[[ ! -z ${sourceFilename:="${mainClass}.java"} ]]
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;;
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gcj*)
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[[ ! -z ${mainClass:="$commandBasename"} ]]
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[[ ! -z ${sourceFilename:="${mainClass}.java"} ]]
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[[ ! -z ${executableFilename:="$commandBasename"} ]]
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[[ ! -z ${execute:="PATH=$cacheDir:$PATH $executableFilename"} ]]
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;;
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gcc* | g++* | c89* | c99*)
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[[ ! -z ${executableFilename:="$commandBasename"} ]]
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[[ ! -z ${execute:="PATH=$cacheDir:$PATH $executableFilename"} ]]
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;;
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esac
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case $compilerName in
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jsc*)
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[[ ! -z ${mainClass:="$commandBasename"} ]]
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[[ ! -z ${sourceFilename:="${mainClass}.js"} ]]
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[[ ! -z ${executableFilename:="${mainClass}.class"} ]]
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[[ ! -z "${execute:="${javaBinDir}java -cp $cacheDir${classPath:+:$classPath} $mainClass"}" ]]
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[[ ! -z "${compilerArgs:="-o $executableFilename $cacheDir/$sourceFilename"}" ]]
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compileCmd="java -cp $cacheDir${classPath:+:$classPath} org.mozilla.javascript.tools.jsc.Main $compilerArgs"
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;;
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javac* | jikes*)
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[[ ! -z ${executableFilename:="${mainClass}.class"} ]]
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sourceVersion=
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case $compilerName in
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javac*)
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if [[ $compilerName == $compiler ]] ; then
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compilerDir=
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else
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compilerDir=${compiler%/*}/
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fi
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[[ ! -z "${execute:="${compilerDir}java -cp $cacheDir${classPath:+:$classPath} $mainClass"}" ]]
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# Prepare to tell javac to compile for the latest language version it supports
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sourceVersion="-source $(${compilerDir}java -version 2>&1 | sed -n '1s,[^"]*"\([1-9][1-9]*\.[1-9][1-9]*\).*,\1,p')"
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;;
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jikes*)
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if [[ -z "$classPath" && -z "$compilerArgs" && -z "$CLASSPATH" ]] ; then
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# Mac: export CLASSPATH=/System/Library/Frameworks/JavaVM.framework/Classes/classes.jar
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echo 1>&2 compileAndGo: for jikes, if neither classPath nor CLASSPATH are set, compilerArgs must be set.
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exit 2
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fi
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[[ ! -z "${execute:="java -cp $cacheDir${classPath:+:$classPath} $mainClass"}" ]]
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;;
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esac
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[[ ! -z "${compilerArgs:="$sourceVersion -d $cacheDir -sourcepath . ${classPath:+-classpath $classPath} $cacheDir/$sourceFilename"}" ]]
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compileCmd="$compiler $compilerArgs"
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;;
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gcj*)
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[[ ! -z ${compilerArgs:="--main=$mainClass -o $cacheDir/$commandBasename $cacheDir/$sourceFilename"} ]]
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compileCmd="$compiler $compilerArgs $linkerArgs"
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;;
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gcc* | g++* | c89* | c99* | clang | clang++)
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case $compilerName in
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cc* | gcc* | c89* | c99* | clang)
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[[ ! -z ${sourceFilename:="${commandName}.c"} ]]
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;;
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g++* | clang++)
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[[ ! -z ${sourceFilename:="${commandName}.cp"} ]]
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;;
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esac
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[[ ! -z ${compilerArgs:="-O2 -o $cacheDir/$executableFilename $cacheDir/$sourceFilename"} ]]
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compileCmd="$compiler $compilerArgs $linkerArgs"
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;;
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esac
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#-------------------------------------------------------------------------------
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# Set the variables
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if [[ ! $ourName == cg ]] ; then
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vars=$(
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echo "$declarations" \
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| sed -n 's,\([^=]*\)=.*,\1,p'
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)
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cmdSetters=$(
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for x in $vars
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do
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echo eval "'"${x}='"'$(eval echo \$$x)'"'"'"
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done
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)
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eval "$cmdSetters"
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fi
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if (( 0$verbose >= 3 )) ; then
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echoVariables "=== the variables before defaults"
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fi
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if [[ $ourName == cg ]] ; then
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if (( 0$verbose >= 4 )) ; then
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echo 1>&2 \=== eval command to set variables
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echo2 1>&2 eval "$cmdSetters"
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fi
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fi
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#-------------------------------------------------------------------------------
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# Check that all the required variables are set.
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for x in sourceFilename executableFilename compilerArgs execute
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do
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eval 'if [ -z "'\$$x'" ] ; then trouble=true ; fi'
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done
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if [[ ! -z "$trouble" ]] ; then echo 1>&2 compileAndGo: unknown compiler setting "$compiler" ; exit 2 ; fi
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for x in sourceFilename executableFilename compilerArgs execute
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do
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eval 'if [ -z "'\$$x'" ] ; then echo 1>&2 compileAndGo: $x must be set ; fi'
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done
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if [[ ! -z "$trouble" ]] ; then exit 2 ; fi
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[[ ! -z ${firstArgIsCommandName:=false} ]]
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[[ ! -z ${verbose:=0} ]]
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eval "$cmdSetters"
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if (( 0$verbose >= 3 )) ; then
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echoVariables "=== the variables after defaults"
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fi
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#set -x
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#-------------------------------------------------------------------------------
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# Compile if necessary
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# shorthand
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cachedExecutable=$cacheDir/$executableFilename
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# The security precautions go like this:
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# The executable and the folder in which it resides are
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# * owned by user
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# * 700 permissions (rwx------)
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# The important facts are:
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# * Only the user or root can chmod a file or folder owned by him.
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# * Only the user or root can write into a file or folder that is 700.
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# * Only root can chown a file or folder to the user.
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# so only the user or root can construct a suitable file in the suitable
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# folder. No one else can. That's about as good as it can get on unix.
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# The attack would be limited to finding some existing folder containing
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# an executable of the correct name, both owned by the user and 700,
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# then moving the folder into the appropriate path.
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# The implementation should be expanded to require that all folders from
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# $cacheDir through $cacheDirParent must be owned by user and be 700.
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if [[ ! -O $cachedExecutable ]] ; then
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if [[ -e $cachedExecutable ]] ; then
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echo 1>&2 "$commandName: Aborting because $cachedExecutable exists,"
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echo 1>&2 "$commandName: and you don't own it."
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echo 1>&2 "$commandName: This is a possible security violation."
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exit 2
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fi
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# Try to make it harder for others to tamper with our cache.
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umask 077
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# Insist that $cacheDirParent is a directory and is owned by the user.
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if [[ -d $cacheDirParent ]] ; then
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|
if [[ ! -O $cacheDirParent ]] ; then
|
|
echo 1>&2 "$commandName: Aborting because $cacheDirParent/ exists, and you don't own it."
|
|
echo 1>&2 "$commandName: This is a security risk."
|
|
exit 2
|
|
fi
|
|
chmod 700 $cacheDirParent
|
|
else
|
|
mkdir -p $cacheDirParent
|
|
echo > $cacheDirParent/../README "See http://Yost.com/computers/compileAndGo"
|
|
fi
|
|
|
|
mkdir -p $cacheDir
|
|
|
|
# Compile the source.
|
|
if (( 0$verbose == 1 )) ; then
|
|
echo 1>&2 "[ $commandName: compiling. ]"
|
|
elif (( 0$verbose >= 2 )) ; then
|
|
echo -n 1>&2 "[ "
|
|
echo2 -n 1>&2 "$compileCmd"
|
|
echo 1>&2 " ]"
|
|
fi
|
|
echo "$sourceCode" > $cacheDir/$sourceFilename
|
|
eval $compileCmd
|
|
|
|
# Make a canonical name we can look at to determine access time.
|
|
ln -f $cachedExecutable $cacheDir/.executable
|
|
fi
|
|
|
|
#-------------------------------------------------------------------------------
|
|
# Execute the built program.
|
|
|
|
if [[ "$firstArgIsCommandName" != true ]] ; then
|
|
shift
|
|
fi
|
|
|
|
if (( 0$verbose >= 2 )) ; then
|
|
echo -n 1>&2 "[ "
|
|
echo2 -n 1>&2 $execute "$@"
|
|
echo 1>&2 " ]"
|
|
fi
|
|
eval "$execute"' "$@"'
|
|
status=$?
|
|
|
|
if [[ true ]] ; then
|
|
# Run a background task to clean the cache occasionally.
|
|
(
|
|
# Check every this-many days.
|
|
checkInterval="-mtime -7"
|
|
# Max number of days a version cam be unused and not be removed.
|
|
maxAge="-atime +14"
|
|
# Every $checkInterval days, remove stuff not used in $maxAge days.
|
|
stamp=$(nice -n 20 find $cacheDirRoot -maxdepth 1 -name .timestamp $checkInterval)
|
|
if [[ ! -z "$stamp" ]] ; then
|
|
# Too soon
|
|
exit
|
|
fi
|
|
nice -n 20 touch $cacheDirRoot/.timestamp
|
|
# Remove dirs of executable versions not accessed in the last $maxAge days.
|
|
candidates=$(nice -n 20 find $cacheDirRoot -mindepth 3 -name .executable $maxAge)
|
|
if [[ ! -z "$candidates" ]] ; then
|
|
#echo "$candidates"
|
|
echo "$candidates" \
|
|
| nice -n 20 sed 's,/.executable,,' \
|
|
| nice -n 20 xargs rm -rf
|
|
fi
|
|
) \
|
|
> /dev/null 2>&1 \
|
|
&
|
|
fi
|
|
|
|
exit $status
|
|
|
|
# Copyright 2005-2010 Dave Yost <Dave@Yost.com>
|
|
# All rights reserved.
|
|
# This version is
|
|
# compileAndGo 5.0 2010-11-06
|
|
# which at time of this publication can be found at:
|
|
# http://Yost.com/computers/compileAndGo
|
|
# Redistribution and use in the form of source code or derivative data built
|
|
# from the source code, with or without modification, are permitted provided
|
|
# that the following conditions are met:
|
|
# 1. THE USER AGREES THAT THERE IS NO WARRANTY.
|
|
# 2. If and only if appropriate, the above phrase "This version is" must be
|
|
# followed by the phrase "a modified form of" or "extracted from" or
|
|
# "extracted and modified from".
|
|
# 3. Redistributions of source code must retain this notice intact.
|
|
# 4. Redistributions in the form of derivative data built from the source
|
|
# code must reproduce this notice intact in the documentation and/or other
|
|
# materials provided with the distribution, and each file in the derivative
|
|
# data must reproduce any Yost.com URI included in the original distribution.
|
|
# 5. Neither the name of Dave Yost nor the names of its contributors may be
|
|
# used to endorse or promote products derived from this software without
|
|
# specific prior written permission.
|
|
# 6. Written permission by the author is required for redistribution as part
|
|
# of a commercial product.
|
|
# This notice comprises all text from "Copyright" above through the end of
|
|
# this sentence.
|