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#!/usr/bin/env bash
#
# A more capable sbt runner, coincidentally also called sbt.
# Author: Paul Phillips <paulp@typesafe.com>
# todo - make this dynamic
declare -r sbt_release_version=0.13.1
declare -r sbt_unreleased_version=0.13.2-SNAPSHOT # -sbt-dev doesn't work at present
declare -r buildProps=project/build.properties
declare sbt_jar sbt_dir sbt_create sbt_launch_dir
declare scala_version java_home sbt_explicit_version
declare verbose debug quiet noshare batch trace_level log_level
declare sbt_saved_stty
echoerr () { [[ -z $quiet ]] && echo "$@" >&2; }
vlog () { [[ -n "$verbose$debug" ]] && echoerr "$@"; }
dlog () { [[ -n $debug ]] && echoerr "$@"; }
# we'd like these set before we get around to properly processing arguments
for arg in "$@"; do
case $arg in
-q|-quiet) quiet=true ;;
-d|-debug) debug=true ;;
-v|-verbose) verbose=true ;;
*) ;;
esac
done
# spaces are possible, e.g. sbt.version = 0.13.0
build_props_sbt () {
[[ -r $buildProps ]] && \
grep ^sbt\.version $buildProps | tr '=' ' ' | awk '{ print $2; }'
}
update_build_props_sbt () {
local ver="$1"
local old="$(build_props_sbt)"
[[ -r $buildProps ]] && [[ $ver != "$old" ]] && {
perl -pi -e "s/^sbt\.version\b.*\$/sbt.version=${ver}/" $buildProps
grep -q '^sbt.version[ =]' $buildProps || printf "\nsbt.version=%s\n" "$ver" >> $buildProps
echoerr !!!
echoerr !!! Updated file $buildProps setting sbt.version to: "$ver"
echoerr !!! Previous value was: "$old"
echoerr !!!
}
}
sbt_version () {
if [[ -n $sbt_explicit_version ]]; then
echo $sbt_explicit_version
else
local v=$(build_props_sbt)
if [[ -n $v ]]; then
echo "$v"
else
echo "$sbt_release_version"
fi
fi
}
# restore stty settings (echo in particular)
onSbtRunnerExit() {
[[ -n $sbt_saved_stty ]] || return
dlog ""
dlog "restoring stty: $sbt_saved_stty"
stty $sbt_saved_stty
unset sbt_saved_stty
}
# save stty and trap exit, to ensure echo is reenabled if we are interrupted.
trap onSbtRunnerExit EXIT
sbt_saved_stty=$(stty -g 2>/dev/null)
dlog "Saved stty: $sbt_saved_stty"
# this seems to cover the bases on OSX, and someone will
# have to tell me about the others.
get_script_path () {
local path="$1"
[[ -L "$path" ]] || { echo "$path" ; return; }
local target=$(readlink "$path")
if [[ "${target:0:1}" == "/" ]]; then
echo "$target"
else
echo "${path%/*}/$target"
fi
}
die() {
echo "Aborting: $@"
exit 1
}
make_url () {
version="$1"
echo "$sbt_launch_repo/org.scala-sbt/sbt-launch/$version/sbt-launch.jar"
}
readarr () {
while read ; do
eval "$1+=(\"$REPLY\")"
done
}
init_default_option_file () {
local overriding_var=${!1}
local default_file=$2
if [[ ! -r "$default_file" && $overriding_var =~ ^@(.*)$ ]]; then
local envvar_file=${BASH_REMATCH[1]}
if [[ -r $envvar_file ]]; then
default_file=$envvar_file
fi
fi
echo $default_file
}
declare -r cms_opts="-XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC"
declare -r jit_opts="-XX:ReservedCodeCacheSize=256m -XX:+TieredCompilation"
declare -r default_jvm_opts="-Dfile.encoding=UTF8 -XX:MaxPermSize=384m -Xms512m -Xmx1536m -Xss2m $jit_opts $cms_opts"
declare -r noshare_opts="-Dsbt.global.base=project/.sbtboot -Dsbt.boot.directory=project/.boot -Dsbt.ivy.home=project/.ivy"
declare -r latest_28="2.8.2"
declare -r latest_29="2.9.3"
declare -r latest_210="2.10.3"
declare -r latest_211="2.11.0-M5"
declare -r script_path=$(get_script_path "$BASH_SOURCE")
declare -r script_name="${script_path##*/}"
# some non-read-onlies set with defaults
declare java_cmd=java
declare sbt_opts_file=$(init_default_option_file SBT_OPTS .sbtopts)
declare jvm_opts_file=$(init_default_option_file JVM_OPTS .jvmopts)
declare sbt_launch_repo="http://typesafe.artifactoryonline.com/typesafe/ivy-releases"
# pull -J and -D options to give to java.
declare -a residual_args
declare -a java_args
declare -a scalac_args
declare -a sbt_commands
# args to jvm/sbt via files or environment variables
declare -a extra_jvm_opts extra_sbt_opts
# if set, use JAVA_HOME over java found in path
[[ -e "$JAVA_HOME/bin/java" ]] && java_cmd="$JAVA_HOME/bin/java"
# directory to store sbt launchers
declare sbt_launch_dir="$HOME/.sbt/launchers"
[[ -d "$sbt_launch_dir" ]] || mkdir -p "$sbt_launch_dir"
[[ -w "$sbt_launch_dir" ]] || sbt_launch_dir="$(mktemp -d -t sbt_extras_launchers.XXXXXX)"
build_props_scala () {
if [[ -r $buildProps ]]; then
versionLine=$(grep ^build.scala.versions $buildProps)
versionString=${versionLine##build.scala.versions=}
echo "${versionString%% .*}"
fi
}
execRunner () {
# print the arguments one to a line, quoting any containing spaces
[[ $verbose || $debug ]] && echo "# Executing command line:" && {
for arg; do
if [[ -n "$arg" ]]; then
if printf "%s\n" "$arg" | grep -q ' '; then
printf "\"%s\"\n" "$arg"
else
printf "%s\n" "$arg"
fi
fi
done
echo ""
}
if [[ -n $batch ]]; then
exec </dev/null
fi
exec "$@"
}
jar_url () {
case $1 in
0.13.*) make_url "$1" ;;
*) make_url "$sbt_release_version" ;;
esac
}
jar_file () {
case $1 in
0.13.*) echo "$sbt_launch_dir/$1/sbt-launch.jar" ;;
*) echo "$sbt_launch_dir/$sbt_release_version/sbt-launch.jar" ;;
esac
}
download_url () {
local url="$1"
local jar="$2"
echo "Downloading sbt launcher for $(sbt_version):"
echo " From $url"
echo " To $jar"
mkdir -p "${jar%/*}" && {
if which curl >/dev/null; then
curl --fail --silent "$url" --output "$jar"
elif which wget >/dev/null; then
wget --quiet -O "$jar" "$url"
fi
} && [[ -r "$jar" ]]
}
acquire_sbt_jar () {
for_sbt_version="$(sbt_version)"
sbt_url="$(jar_url "$for_sbt_version")"
sbt_jar="$(jar_file "$for_sbt_version")"
[[ -r "$sbt_jar" ]] || download_url "$sbt_url" "$sbt_jar"
}
usage () {
cat <<EOM
Usage: $script_name [options]
-h | -help print this message
-v | -verbose this runner is chattier
-d | -debug set sbt log level to Debug
-q | -quiet set sbt log level to Error
-trace <level> display stack traces with a max of <level> frames (default: -1, traces suppressed)
-no-colors disable ANSI color codes
-sbt-create start sbt even if current directory contains no sbt project
-sbt-dir <path> path to global settings/plugins directory (default: ~/.sbt/<version>)
-sbt-boot <path> path to shared boot directory (default: ~/.sbt/boot in 0.11+)
-ivy <path> path to local Ivy repository (default: ~/.ivy2)
-no-share use all local caches; no sharing
-offline put sbt in offline mode
-jvm-debug <port> Turn on JVM debugging, open at the given port.
-batch Disable interactive mode
-prompt <expr> Set the sbt prompt; in expr, 's' is the State and 'e' is Extracted
# sbt version (default: from $buildProps if present, else latest release)
!!! The only way to accomplish this pre-0.12.0 if there is a build.properties file which
!!! contains an sbt.version property is to update the file on disk. That's what this does.
-sbt-version <version> use the specified version of sbt (default: $sbt_release_version)
-sbt-jar <path> use the specified jar as the sbt launcher
-sbt-launch-dir <path> directory to hold sbt launchers (default: $sbt_launch_dir)
-sbt-launch-repo <url> repo url for downloading sbt launcher jar (default: $sbt_launch_repo)
# scala version (default: as chosen by sbt)
-28 use $latest_28
-29 use $latest_29
-210 use $latest_210
-211 use $latest_211
-scala-home <path> use the scala build at the specified directory
-scala-version <version> use the specified version of scala
-binary-version <version> use the specified scala version when searching for dependencies
# java version (default: java from PATH, currently $(java -version 2>&1 | grep version))
-java-home <path> alternate JAVA_HOME
# passing options to the jvm - note it does NOT use JAVA_OPTS due to pollution
# The default set is used if JVM_OPTS is unset and no -jvm-opts file is found
<default> $default_jvm_opts
JVM_OPTS environment variable holding either the jvm args directly, or
the reference to a file containing jvm args if given path is prepended by '@' (e.g. '@/etc/jvmopts')
Note: "@"-file is overridden by local '.jvmopts' or '-jvm-opts' argument.
-jvm-opts <path> file containing jvm args (if not given, .jvmopts in project root is used if present)
-Dkey=val pass -Dkey=val directly to the jvm
-J-X pass option -X directly to the jvm (-J is stripped)
# passing options to sbt, OR to this runner
SBT_OPTS environment variable holding either the sbt args directly, or
the reference to a file containing sbt args if given path is prepended by '@' (e.g. '@/etc/sbtopts')
Note: "@"-file is overridden by local '.sbtopts' or '-sbt-opts' argument.
-sbt-opts <path> file containing sbt args (if not given, .sbtopts in project root is used if present)
-S-X add -X to sbt's scalacOptions (-S is stripped)
EOM
}
addJava () {
dlog "[addJava] arg = '$1'"
java_args=( "${java_args[@]}" "$1" )
}
addSbt () {
dlog "[addSbt] arg = '$1'"
sbt_commands=( "${sbt_commands[@]}" "$1" )
}
addScalac () {
dlog "[addScalac] arg = '$1'"
scalac_args=( "${scalac_args[@]}" "$1" )
}
addResidual () {
dlog "[residual] arg = '$1'"
residual_args=( "${residual_args[@]}" "$1" )
}
addResolver () {
addSbt "set resolvers += $1"
}
addDebugger () {
addJava "-Xdebug"
addJava "-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=$1"
}
setScalaVersion () {
[[ "$1" == *-SNAPSHOT ]] && addResolver 'Resolver.sonatypeRepo("snapshots")'
addSbt "++ $1"
}
process_args ()
{
require_arg () {
local type="$1"
local opt="$2"
local arg="$3"
if [[ -z "$arg" ]] || [[ "${arg:0:1}" == "-" ]]; then
die "$opt requires <$type> argument"
fi
}
while [[ $# -gt 0 ]]; do
case "$1" in
-h|-help) usage; exit 1 ;;
-v|-verbose) verbose=true && log_level=Info && shift ;;
-d|-debug) debug=true && log_level=Debug && shift ;;
-q|-quiet) quiet=true && log_level=Error && shift ;;
-trace) require_arg integer "$1" "$2" && trace_level=$2 && shift 2 ;;
-ivy) require_arg path "$1" "$2" && addJava "-Dsbt.ivy.home=$2" && shift 2 ;;
-no-colors) addJava "-Dsbt.log.noformat=true" && shift ;;
-no-share) noshare=true && shift ;;
-sbt-boot) require_arg path "$1" "$2" && addJava "-Dsbt.boot.directory=$2" && shift 2 ;;
-sbt-dir) require_arg path "$1" "$2" && sbt_dir="$2" && shift 2 ;;
-debug-inc) addJava "-Dxsbt.inc.debug=true" && shift ;;
-offline) addSbt "set offline := true" && shift ;;
-jvm-debug) require_arg port "$1" "$2" && addDebugger "$2" && shift 2 ;;
-batch) batch=true && shift ;;
-prompt) require_arg "expr" "$1" "$2" && addSbt "set shellPrompt in ThisBuild := (s => { val e = Project.extract(s) ; $2 })" && shift 2 ;;
-sbt-create) sbt_create=true && shift ;;
-sbt-jar) require_arg path "$1" "$2" && sbt_jar="$2" && shift 2 ;;
-sbt-version) require_arg version "$1" "$2" && sbt_explicit_version="$2" && shift 2 ;;
-sbt-dev) sbt_explicit_version="$sbt_unreleased_version" && shift ;;
-sbt-launch-dir) require_arg path "$1" "$2" && sbt_launch_dir="$2" && shift 2 ;;
-sbt-launch-repo) require_arg path "$1" "$2" && sbt_launch_repo="$2" && shift 2 ;;
-scala-version) require_arg version "$1" "$2" && setScalaVersion "$2" && shift 2 ;;
-binary-version) require_arg version "$1" "$2" && addSbt "set scalaBinaryVersion in ThisBuild := \"$2\"" && shift 2 ;;
-scala-home) require_arg path "$1" "$2" && addSbt "set every scalaHome := Some(file(\"$2\"))" && shift 2 ;;
-java-home) require_arg path "$1" "$2" && java_cmd="$2/bin/java" && shift 2 ;;
-sbt-opts) require_arg path "$1" "$2" && sbt_opts_file="$2" && shift 2 ;;
-jvm-opts) require_arg path "$1" "$2" && jvm_opts_file="$2" && shift 2 ;;
-D*) addJava "$1" && shift ;;
-J*) addJava "${1:2}" && shift ;;
-S*) addScalac "${1:2}" && shift ;;
-28) setScalaVersion $latest_28 && shift ;;
-29) setScalaVersion $latest_29 && shift ;;
-210) setScalaVersion $latest_210 && shift ;;
-211) setScalaVersion $latest_211 && shift ;;
*) addResidual "$1" && shift ;;
esac
done
}
# process the direct command line arguments
process_args "$@"
# skip #-styled comments
readConfigFile() {
while read line; do echo "${line/\#.*/}"; done < "$1"
}
# if there are file/environment sbt_opts, process again so we
# can supply args to this runner
if [[ -r "$sbt_opts_file" ]]; then
vlog "Using sbt options defined in file $sbt_opts_file"
readarr extra_sbt_opts < <(readConfigFile "$sbt_opts_file")
elif [[ -n "$SBT_OPTS" && ! ($SBT_OPTS =~ ^@.*) ]]; then
vlog "Using sbt options defined in variable \$SBT_OPTS"
extra_sbt_opts=( $SBT_OPTS )
else
vlog "No extra sbt options have been defined"
fi
[[ -n $extra_sbt_opts ]] && process_args "${extra_sbt_opts[@]}"
# reset "$@" to the residual args
set -- "${residual_args[@]}"
argumentCount=$#
# only exists in 0.12+
setTraceLevel() {
case $(sbt_version) in
0.{7,10,11}.*) echoerr "Cannot set trace level in sbt version $(sbt_version)" ;;
*) addSbt "set every traceLevel := $trace_level" ;;
esac
}
# set scalacOptions if we were given any -S opts
[[ ${#scalac_args[@]} -eq 0 ]] || addSbt "set scalacOptions in ThisBuild += \"${scalac_args[@]}\""
# Update build.properties on disk to set explicit version - sbt gives us no choice
[[ -n "$sbt_explicit_version" ]] && update_build_props_sbt "$sbt_explicit_version"
vlog "Detected sbt version $(sbt_version)"
[[ -n "$scala_version" ]] && echoerr "Overriding scala version to $scala_version"
# no args - alert them there's stuff in here
(( argumentCount > 0 )) || {
vlog "Starting $script_name: invoke with -help for other options"
residual_args=( shell )
}
# verify this is an sbt dir or -create was given
[[ -r ./build.sbt || -d ./project || -n "$sbt_create" ]] || {
cat <<EOM
$(pwd) doesn't appear to be an sbt project.
If you want to start sbt anyway, run:
$0 -sbt-create
EOM
exit 1
}
# pick up completion if present; todo
[[ -r .sbt_completion.sh ]] && source .sbt_completion.sh
# no jar? download it.
[[ -r "$sbt_jar" ]] || acquire_sbt_jar || {
# still no jar? uh-oh.
echo "Download failed. Obtain the jar manually and place it at $sbt_jar"
exit 1
}
if [[ -n $noshare ]]; then
for opt in ${noshare_opts}; do
addJava "$opt"
done
else
[[ -n "$sbt_dir" ]] || {
sbt_dir=~/.sbt/$(sbt_version)
vlog "Using $sbt_dir as sbt dir, -sbt-dir to override."
}
# addJava "-Dsbt.global.base=$sbt_dir"
fi
if [[ -r "$jvm_opts_file" ]]; then
vlog "Using jvm options defined in file $jvm_opts_file"
readarr extra_jvm_opts < <(readConfigFile "$jvm_opts_file")
elif [[ -n "$JVM_OPTS" && ! ($JVM_OPTS =~ ^@.*) ]]; then
vlog "Using jvm options defined in \$JVM_OPTS variable"
extra_jvm_opts=( $JVM_OPTS )
else
vlog "Using default jvm options"
extra_jvm_opts=( $default_jvm_opts )
fi
# traceLevel is 0.12+
[[ -n $trace_level ]] && setTraceLevel
[[ -n $log_level ]] && [[ $log_level != Info ]] && logLevalArg="set logLevel in Global := Level.$log_level"
# run sbt
execRunner "$java_cmd" \
"${extra_jvm_opts[@]}" \
"${java_args[@]}" \
-jar "$sbt_jar" \
"$logLevalArg" \
"${sbt_commands[@]}" \
"${residual_args[@]}"
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