prepare

#!/bin/bash
# WF 2016-08-23
# EDSK4J preparation script
# 
# This script 
#   checks that the Canon EDSK is available
#   optionally generates new JNA wrapper

# This should point to your EDSDK directory
export EDSDK_HOME=EDSDK
edsdklibpath="unknown"

# Script Version
version="0.0.1"

#ansi colors
#http://www.csc.uvic.ca/~sae/seng265/fall04/tips/s265s047-tips/bash-using-colors.html
blue='\033[0;34m'
red='\033[0;31m'
green='\033[0;32m' # '\e[1;32m' is too bright for white bg.
endColor='\033[0m'

#
# a colored message 
#   params:
#     1: l_color - the color of the message
#     2: l_msg - the message to display
#
color_msg() {
  local l_color="$1"
  local l_msg="$2"
  echo -e "${l_color}$l_msg${endColor}"
}

#
# show the given error message on stderr and exit
#   params:
#     1: l_msg - the error message to display
#
error() {
  local l_msg="$1"
  color_msg $red "error:" 1>&2
  color_msg $red "\t$l_msg" 1>&2
  exit 1
}

#
# show usage
#
usage() {
 echo "usage: $0" 1>&2
 echo "  -h|--help      : help" 1>&2
 echo "  -g|--genwrapper: genwrapper" 1>&2 
 
 exit 1
}

#
# display an error and exit
#
error() {
 echo "error: $1" 1>&2
 exit 1
}

#
# check operating system
#
checkos() {
	os=`uname`
	case $os in 
  	Darwin) 
    	edsdklibpath=$HOME/Library/Frameworks/EdSdk
  	;;
  	*)
   		echo "supported operating system $os" 1>&2
   		exit 1
	esac
}

#
# check 
#
check() {
  checkos
  if [ ! -f $edsklibpath ]
  then
    error "EDSDK Library $edsklibpath missing - you might want to copy it to this location"
  else
    
    otool -L $edsdklibpath
  fi
  echo $edsdklibpath
}

#
# generate the edsk JNA wrapper classes 
#
genwrapper() {
  # check the header files for Unicode Byte Order Mark which need to be removed
  # see  https://github.com/kritzikratzi/edsdk4j/issues/7
	for f in $EDSDK_HOME/Header/*.h 
	do
  	file $f
  	grep $'\xEF\xBB\xBF' $f
  	if  [ $? -eq 0 ]
  	then
     	perl -i -pe 's{\xEF\xBB\xBF}{}' $f
 	  fi
	done
	types=$EDSDK_HOME/Header/EDSDKTypes.h
	grep "struct tag" $types
 	if  [ $? -eq 0 ]
  then
   	perl -i -pe 's{struct tag}{struct }' $types
  fi	 
	#mvn com.nativelibs4java:maven-jnaerator-plugin:generate
	java -jar lib/jnaerator-0.12-shaded.jar src/main/jnaerator/config.jnaerator
}

if [ $# -lt 1 ]
then
  check
else
	while test $# -gt 0
	do
	  case $1 in
	    # help
	    -h|--help) 
	      usage;;
	    -g|--genwrapper) genwrapper;;
	  esac
	  shift
	done
fi