#!/usr/bin/env bash

# smeka setup script for installing

# smeka in a project.

# Implementation by:

# Nick R. Papior, 2016

# Print out the help information for

# this file.

function print_help() {

echo "Usage: $0 [options]"

echo ""

echo "Required options:"

echo " --project (if performed on fresh project)"

echo ""

echo "Options:"

echo " -D|--directory <path>"

echo " the project directory for the main Makefile"

echo " -P|--project <name>"

echo " project name (hard coded in the makefiles)"

echo " -v|--version <version>"

echo " project version"

echo " --smeka-dir <relative path>"

echo " the name of the path for the sub-makefiles"

echo " created by smeka [$_smeka_dir]"

echo " --project-dir-smeka"

echo " install the Makefile.project in the smeka directory"

echo " (instead of in the same folder as the Makefile)"

echo " -h|--help"

echo " this help message"

}

# Convert a path to a full path with prefixed

# /

# Hence

# ../this/dir

# would be converted to (roughly)

# $(dirname $(pwd)/../this/dir)/dir

function full_path() {

local path=$1

shift

# Convert path to a full path (/.../) path

printf "%s" "$(cd $(dirname $path) && pwd -P)/$(basename $path)"

}

# Common error exit codes

_ERR_DIR=1

_ERR_MAKEFILE=2

_ERR_UNSET_PROJECT=3

# This script directory

# This may not work in all OS's.

# For now this is fine.

_cur_dir=$(full_path $(dirname $0))

# Create a temporary directory ($$ == PID of current shell)

_tmp_dir=$(mktemp -dt "$(basename $0).$$.XXXXXXXX")

# Default clean-up utility

function clean_up() {

rm -rf $_tmp_dir

}

# Create default trap function

function def_trap() {

clean_up

echo "Exiting $0 before completion!!!"

}

# This is a no-op function

function no_op() {

echo no-op > /dev/null

}

# Default options

_smeka_dir=smeka

_version=DONOTUSE

_project_dir_smeka=0 # 0 = false, 1 = true

# Options that are REQUIRED to be

# set by the user.

_project=

_directory=.

while [ $# -gt 0 ]

do

# get the current option

opt=$1

shift

case $opt in

# Specify the installation directory

# This should be the root of the project

# files (where the Makefile should reside)

-D|--directory)

_directory=$1

shift

;;

# The name of the project.

# This will be hard-coded into the Makefiles

# as the project name.

-P|--project)

_project=$1

shift

;;

# Denote the version of the project

-v|--version)

_version=$1

shift

;;

# Change the (relative) directory of the smeka files

--smeka-dir)

_smeka_dir=$1

shift

;;

# Decide the placement of the Makefile.project

# file (default to same folder as Makefile)

--project-dir-smeka)

_project_dir_smeka=1

;;

-h|--help)

print_help

exit 0

;;

esac

done

# Begin actual installation of smeka

err=0

# 1. Check parameters

if [ -z "$_directory" ]; then

echo "ERROR"

echo "Installing smeka REQUIRES the directory of the"

echo "parent project directory."

echo "Please add -D|--directory flag"

err=$_ERR_DIR

fi

if [ ! -d "$_directory" ]; then

echo "ERROR"

echo "Project directory:"

echo " $_directory"

echo "does not exist."

echo "Please correct your input."

err=$_ERR_DIR

fi

# If there is an error the directory is erroneous

[ $err -ne 0 ] && exit $err

# Convert to full path

_directory=$(full_path $_directory)

# 2. Check whether the project directory

# has an old installation of smeka.

pushd $_directory > /dev/null

trap "def_trap ; popd" SIGINT SIGTERM

# Check if there is a Makefile

previous_smeka=0

if [ -e Makefile ]; then

previous_smeka=1

fi

if [ $previous_smeka -eq 1 ]; then

# Check that it is a smeka Makefile

# If it isn't we do not allow installing

# smeka.

# The project should be:

# 1) a clean (no Makefile) directory

# 2) Having a previous installed smeka installation

grep "SMEKASETTINGS" Makefile > /dev/null

rval=$?

if [ $rval -ne 0 ]; then

echo "ERROR!"

echo "An existing Makefile exists which is not a"

echo "smeka Makefile."

echo "Please rename your original Makefile and re-run."

err=$_ERR_MAKEFILE

fi

fi

popd > /dev/null

[ $err -ne 0 ] && exit $err

######################

## Proceed with the ##

## installation! ##

######################

# Move to head of this CMD

# Also assign a trap to popd

pushd $_directory > /dev/null

trap "def_trap ; popd" SIGINT SIGTERM

if [ $previous_smeka -eq 1 ]; then

# Re-create the makefile with content of smeka

tmp_make=$_tmp_dir/Makefile

in_smeka=0

while IFS='' read -r line

do

case $line in

# If detecting SMEKASETTINGS

# We overwrite the content with the

# smeka Makefile and continue reading

*SMEKASETTINGS*)

sed -e "s:%%SMEKA_DIR%%:$_smeka_dir:" \

$_cur_dir/make/Makefile >> $tmp_make

in_smeka=1

;;

# We are done with reading the

# smeka files

*SMEKAENDSETTINGS*)

in_smeka=0

;;

# Lines not part of smeka,

# or if in smeka, we skip them.

*)

if [ $in_smeka -eq 0 ]; then

echo "$line" >> $tmp_make

fi

;;

esac

done < "Makefile"

# Remove the old Makefile and re-install the

# currently created makefile

# Now the makefile has been created

# and we wish to move it

mv -f $tmp_make Makefile

elif [ -z "_project" ]; then

# Error, the project name hasn't been set.

echo "ERROR"

echo "For a fresh smeka installation the project name"

echo "is REQUIRED information."

echo "Please see:"

echo " $0 --help"

echo "on how to set the project name."

exit $_ERR_UNSET_PROJECT

else

# The Makefile does not exist, copy it

sed -e "s:%%SMEKA_DIR%%:$_smeka_dir:" \

$_cur_dir/make/Makefile >> Makefile

fi

# Ensure the smeka Makefile directory exists...

# This command will create both the smeka-directory

# AND the vendor folder... :)

mkdir -p $_smeka_dir/vendor

# Copy the files (except Makefile.project)

# to the smeka directory

for f in $_cur_dir/make/smeka/*.*

do

# Skip the Makefile.project

# It needs special attention

[ "$f" == Makefile.project ] && continue

# Make sure we overwrite old files

cp -f $f $_smeka_dir/

done

# Copy the vendor files

# WE ALWAYS DO THIS

# We issue a warning if a file is overwritten!

for f in $_cur_dir/make/smeka/vendor/*

do

bf=$(basename $f)

# Issue warning if already existing

if [ -e $_smeka_dir/vendor/$bf ]; then

echo "Vendor file '$bf' is being overwritten (this may be neglected when updating smeka)"

fi

# Make sure we overwrite old files

cp -f $f $_smeka_dir/vendor/

done

# If the project file does not exists, perform sed and create

if [ -e Makefile.project ]; then

# We need not do anything.

# Everything has been set previously by the user

# ASSUMEDLY

no_op

else

# The Makefile.project file does not exist.

# Here the file is created.

sed "s:%%VERSION%%:$_version:;s:%%PROJECT%%:$_project:" \

$_cur_dir/make/Makefile.project > Makefile.project

fi

popd > /dev/null

# Clean-up script

clean_up

exit 0

# Local Variables:

# mode: bash

# End: