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versionswitcher.sh
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versionswitcher.sh
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###
### $Release: 0.0.0 $
### $Copyright: copyright(c) 2011-2012 kuwata-lab.com all rights reserved $
### $License: Public Domain $
###
###
### versionswitcher.sh -- switch version of language or application
###
### setup:
### $ VS_HOME=$HOME/lang
### $ . /some/where/to/versionswitcher.sh'
### $ vs --help
###
__vs_version=`echo '$Release: 0.0.0 $' | awk '{print $2}'`
###
[ -z "$VS_HOME" -a -d $HOME/lang ] && VS_HOME=$HOME/lang
###
__vs_help_message() {
cat <<END
versionswitcher - change version of language or application
Release: $release
Usage: vs [options] [lang] [version]
-h : help
-v : version
-i : install
-U : self upgrade
-q : quiet
Examples:
$ VS_HOME=\$HOME/lang
$ vs -h # show help
$ vs # list language names installed
$ vs python # list python vesrions installed
$ vs python 2.6.6 # use \$HOME/lang/python/2.6.6
$ vs python 2 # use \$HOME/lang/python/2.x.x (ex. 2.7.2)
$ vs python latest # use latest version under \$HOME/lang/python
$ vs python - # use system-installed one (ex. /usr/bin/python)
$ vs -i # list language names installable
$ vs -i python # list python versions installable
$ vs -i python 3.2.2 # install python 3.2.2 ('latest' is not available!)
Tips:
* Short name 'vs' is an alias to 'versionswitcher'.
* \$HOME/.vs/hooks/<language>.sh is imported if exists.
* 'vs (py|rb|pl|gosh)' are available instead of
'vs (python|ruby|perl|gauche)'.
For example:
$ vs py latest # same as vs python latest
END
# * It is allowed to set VS_HOME=path1:path2:path3:...
}
###
versionswitcher() {
local lang
local command
local version
local release=`echo '$Release: 0.0.0 $' | awk '{print $2}'`
__vs_option_quiet=''
case "$1" in
-q)
__vs_option_quiet='true'
shift;;
esac
case "$1" in
-h|--help)
__vs_help_message
;;
-v|--version)
echo $release
;;
-i|--install)
lang=$2; version=$3
__vs_install "$lang" "$version"
;;
-U|--upgrade)
__vs_upgrade
;;
-*)
echo "versionswitcher: $1: unknown option." 1>&2
;;
*)
lang=$1
version=$2
case $lang in
rb) lang="ruby" ;;
py) lang="python" ;;
pl) lang="perl" ;;
rbx) lang="rubinius";;
gosh) lang="gauche" ;;
esac
__vs_switch "$lang" "$version"
;;
esac
unset __vs_option_quiet
}
###
__vs_glob() {
local pattern=$1
local filenames
if [ -n "$BASH_VERSION" ]; then # for bash
(shopt -s nullglob; echo $pattern)
elif [ -n "$ZSH_VERSION" ]; then # for zsh
(setopt nonomatch; setopt nullglob; eval echo $pattern)
else # other
filenames=`echo $pattern`
[ "$filenames" = "$pattern" ] || echo $filenames
fi
}
###
__vs_echo() {
if [ -z "$__vs_option_quiet" ]; then
echo "$1"
fi
}
###
__vs_downloader() {
local curlopt=$1
local wgetopt=$2
local curl=`which curl`
local wget=`which wget`
local down
if [ -n "$curl" ]; then
echo "curl $curlopt"
elif [ -n "$wget" ]; then
echo "wget $wgetopt"
else
echo "$prompt ERROR: 'wget' or 'curl' required." 1>&2
return 1
fi
}
###
__vs_versions() {
local basedir=$1
local version=$2
local len
__vs_glob "$basedir/$version*/bin" | awk '{
for (i=1; i<=NF; i++) {
binpath = $i;
len = split(binpath, arr, "/");
version = arr[len-1];
len = split(version, nums, /[^0-9]+/);
key = "";
for (j=1; j<=len; j++) {
if (length(nums[j]) > 0) {
key = key sprintf("%010d", nums[j]) "_";
}
}
if (len == 0) { key = version }
print key, version;
}
}' | sort | awk '{print $2}'
}
##
__vs_error() {
local msg=$1
echo "versionswitcher: $msg" 1>&2
return 1
}
###
__vs_switch() {
local lang=$1
local version=$2
## exit if $VS_HOME is not set
[ -n "$VS_HOME" ] || __vs_error '$VS_HOME is not set.' || return 1
## show all language names if lang is not specified
local dir
local basedir
local list
if [ -z "$lang" ]; then
#echo "## language # basedir"
__vs_echo "## installed"
for dir in `echo $VS_HOME | tr ':' ' '`; do
for basedir in `__vs_glob "$dir/*"`; do
list=`__vs_glob "$basedir/*/bin"`
if [ -n "$list" ]; then
lang=`basename $basedir`
printf "%-20s # %s\n" $lang $basedir
fi
done
done | awk '{if(++D[$1]==1)print}' | sort
return 0
fi
## check whether installed or not
local basedir=''
for dir in `echo $VS_HOME | tr ':' ' '`; do
if [ -n "$dir" -a -d "$dir/$lang" ]; then
basedir="$dir/$lang"
break
fi
done
[ -n "$basedir" ] || __vs_error "$lang is not installed." || return 1
## list available versions if version is not specified
if [ -z "$version" ]; then
__vs_echo "## basedir: $basedir"
__vs_echo "## versions:"
__vs_versions "$basedir"
return 0
fi
## find 'bin' directory
local bindir
local ver
if [ "$version" = "-" ]; then
bindir=""
elif [ "$version" = "latest" ]; then
ver=`__vs_versions "$basedir" | tail -1`
bindir=""
[ -n "$ver" ] && bindir="$basedir/$ver/bin"
else
bindir="$basedir/$version/bin"
if ! [ -d "$bindir" ]; then
ver=`__vs_versions "$basedir" "$version" | tail -1`
bindir=""
[ -n "$ver" ] && bindir="$basedir/$ver/bin"
fi
fi
[ -n "$bindir" -o "$version" = "-" ] || __vs_error "$lang version $version is not installed." || return 1
## remove current bindir from $PATH
#local newpath=`ruby -e "print ENV['PATH'].split(':').delete_if{|x|x=~%r'^$basedir/.*/bin'}.join(':')"`
local newpath=$bindir
for dir in `echo $PATH | tr ':' ' '`; do
case $dir in
$basedir/*/bin*)
;;
*)
if [ -z "$newpath" ]; then
newpath=$dir
else
newpath=$newpath:$dir
fi
;;
esac
done
## set $PATH
local prompt='$' # or '[versionswitcher]$'
__vs_echo "$prompt export PATH=$newpath" ; export PATH=$newpath
hash -r
## set or clear ${lang}root
local rootvar="${lang}root"
#local vervar=`awk 'BEGIN{print toupper("VERSIONSWITCHER_'$lang'_VERSION")}'`
local vervar="${lang}version"
if [ -n "$bindir" ]; then
rootdir=`dirname $bindir`
version=`basename $rootdir`
__vs_echo "$prompt $rootvar='$rootdir'" ; eval "$rootvar=$rootdir"
__vs_echo "$prompt $vervar='$version'" ; eval "$vervar='$version'"
else
__vs_echo "$prompt unset $rootvar" ; unset $rootvar
__vs_echo "$prompt unset $vervar" ; unset $vervar
fi
## import hook script if exists
local script="$HOME/.vs/hooks/$lang.sh"
[ -f "$script" ] && . $script
}
###
__vs_download() {
local filename=$1
local url="http://versionswitcher.appspot.com/$filename"
[ -n "$VS_DEBUG" ] && url="http://localhost:8080/$filename"
[ -n "$VS_URL" ] && url="$VS_URL/$filename"
local vs_home="$HOME/.vs"
local dir=`dirname $filename`
[ "$dir" = "." ] && dir=""
if [ -n "$dir" -a ! -d "$vs_home/$dir" ]; then
mkdir -p $vs_home/$dir || __vs_error "Failed: mkdir -p $vs_home/$dir" || return 1
fi
local down
downn=`__vs_downloader '-sORL' '-qN'` || return 1
(cd $vs_home/$dir; eval $down $url) || __vs_error "Failed: $down $url" || return 1
echo $vs_home/$filename
}
##
__vs_installable_langs() {
local filepath="$HOME/.vs/data/INDEX.txt"
[ -f "$filepath" ] || __vs_error "$filepath: not found." || return 1
__vs_echo "## try 'vs -i LANG' where LANG is one of:"
cat $filepath
}
##
__vs_installable_versions() {
local lang=$1
local printmsg=$2 # 'y' or 'n'
local condense=$3 # 'y' or 'n'
local url=''
local url2=''
local rexp=''
local sep='.'
local none='';
#
local fname="$HOME/.vs/data/$lang.txt"
[ -f $fname ] || __vs_error "$lang: not supported ($fname not found)." || return 1
. $fname
#
if [ "$printmsg" = 'y' ]; then
[ -n "$url" ] && echo "## checking $url"
[ -n "$url2" ] && echo "## checking $url2"
__vs_echo "## try 'vs -i $lang VERSION' where VERSION is one of:"
fi
#
perl='perl';
[ -f /usr/local/bin/perl ] && perl='/usr/local/bin/perl';
[ -f /usr/bin/perl ] && perl='/usr/bin/perl';
#
local down
down=`__vs_downloader "-sL" "-q -O - --no-check-certificate"` || return 1
if [ "$condense" = 'y' ]; then
eval $down $url $url2 | $perl -e '
$sep = "'$sep'";
$rexp = q`'$rexp'`;
$none = "'$none'";
$lang = "'$lang'";
my %verdict;
for my $dir (split(/:/, $ENV{"VS_HOME"})) {
$verdict{(split /[;\/]/, $_)[-2]} = 1 for (glob("$dir/$lang/*/bin"));
#for my $path (glob("$dir/$lang/*/bin")) {
# my $version = (split(/[;\/]/, $path))[-2];
# $verdict{$version} = 1;
#}
}
while (<>) {
#push @{$d{$1}}, length($2) ? $2 : $none if /$rexp/;
if (/$rexp/) {
my $ver = $1;
my $patch = length($2) ? $2 : $none;
my $v = length($patch) ? "$ver$sep$patch" : $ver;
push @{$d{$ver}}, (exists($verdict{$v}) ? "$patch*" : $patch);
}
}
#sub norm { join ".", map { sprintf("%03d", $_) } split(/\./, $_[0]) }
for (sort keys %d) {
@arr = sort {$a<=>$b} @{$d{$_}};
if ($#arr) { print $_, $sep, "{", join(",", @arr), "}\n"; }
elsif ($arr[0] eq "*") { print $_, "*\n"; }
elsif (length($arr[0])) { print $_, $sep, $arr[0], "\n"; }
else { print $_, "\n"; }
}
'
else
eval $down $url $url2 | $perl -e '
$sep = "'$sep'";
$rexp = q`'$rexp'`;
$none = "'$none'";
while (<>) {
#push @arr, (($v = $2 ne "" ? $2 : $none) ne "" ? "$1$sep$v" : $1) if /$rexp/;
if (/$rexp/) {
my $ver = $1;
my $patch = $2 ne "" ? $2 : $none;
push @arr, ($patch ne "" ? "$ver$sep$patch" : $ver);
}
}
print $_, "\n" for sort @arr;
'
fi
return 0
}
###
__vs_install() {
local lang=$1
local version=$2
local filepath
local prompt='**'
local ret
## list all languages when lang is not specified
if [ -z "$lang" ]; then
__vs_installable_langs
return 0
fi
## expand shorter name
case "$lang" in
py) lang='python';;
rb) lang='ruby';;
rbx) lang='rubinius';;
pl) lang='perl';;
gosh) lang='gauche';;
esac
## show installable versions when version is not specified
if [ -z "$version" ]; then
__vs_installable_versions "$lang" y y
return 0
fi
## verify version
local input
local found=""
local ver
for ver in `__vs_installable_versions $lang n n`; do
[ "$ver" = "$version" ] && found=true
done
if [ -z "$found" ]; then
echo -n "$prompt Are you really to install $lang $version? [y/N]: "
read input
[ -z "$input" ] && input="n"
case "$input" in
y*|Y*) ;;
*) return 1;;
esac
fi
## download installer script (except $VS_DOWNLOAD_INSTALLER is 0)
local script_file
if [ "$VS_DOWNLOAD_INSTALLER" -ne "0" ]; then
script_file=`__vs_download installers/vs_install_$lang.sh`
else
script_file="$HOME/.vs/installers/vs_install_$lang.sh"
fi
[ -f "$script_file" ] || __vs_error "$lang is not supported to install." || return 1
## confirm PREFIX directory
[ -n "$VS_HOME" ] || __vs_error "Set \$VS_HOME before installation." || return 1
local inst_dir=`echo $VS_HOME | awk -F: '{print $1}'`
local prefix="$inst_dir/$lang/$version"
echo -n "$prompt Install into '$prefix'. OK? [Y/n]: "
read input
[ -z "$input" ] && input="y"
case "$input" in
y*|Y*)
;;
*)
echo -n "$prompt Enter direcotry (full path): "
read prefix
[ -n "$prefix" ] || __vs_error "Install path is not entered." || return 1
;;
esac
## invoke installer script
local shell=$SHELL
[ -z "$shell" ] && shell="/bin/sh"
$shell "$script_file" "$version" "$prefix" || __vs_error "Failed to install." || return 1
## switch to it
echo
echo "$prompt vs $lang $version" ; versionswitcher "$lang" "$version"
}
###
__vs_upgrade() {
local site="http://versionswitcher.appspot.com"
[ -n "$VS_DEBUG" ] && site="http://localhost:8080"
[ -n "$VS_URL" ] && site="$VS_URL"
local down
down=`__vs_downloader '-sL' '-q -O -'` || return 1
local ver=`eval $down $site/version`
if [ "$ver" = "$__vs_version" -a -z "$VS_DEBUG" ]; then
__vs_echo "current version is newest. exist."
else
__vs_echo "upgrade to $ver (current: $__vs_version)"
local dir=$HOME/.vs/scripts
mkdir -p $dir
down=`__vs_downloader "-ORL" ""` || return 1
(cd $dir; rm -f install.sh; eval $down $site/install.sh)
if [ -n "$BASH_VERSION" ]; then # for bash
bash $dir/install.sh
elif [ -n "$ZSH_VERSION" ]; then # for zsh
zsh $dir/install.sh
fi
__vs_echo ". $dir/versionswitcher.sh"
. $dir/versionswitcher.sh
fi
}
###
#alias vs=versionswitcher
vs() {
versionswitcher $@
}