sf2_to_sfz.sh

#!/bin/sh
# this script's dir (and location of the other tools)
scriptpath=$0
scriptname=`basename "$0"`
scriptdir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
cwd=`pwd`

# options:
args=()
VERBOSE=false

################################
# scan command line args:
function usage
{
  echo "$scriptname   use polyphone to convert .sf2 files to _sfz directories"
  echo "              output result to current . directory."
  echo "Usage: "
  echo "  $scriptname <in1...inN>   (in files: e.g. ./drumkit.sf2)"
  echo "  $scriptname <in_dir>      (in dirs:  e.g. ./samples_sf2, recurse and find all sf2 files)"
  echo "  $scriptname --help        (this help)"
  echo "  $scriptname --verbose     (output verbose information)"
  echo ""
}
ARGC=$#
ARGV=("$@")
non_flag_args=0
non_flag_args_required=1
for ((i = 0; i < ARGC; i++)); do
  if [[ $ARGC -ge 1 && ${ARGV[$i]} == "--help" ]]; then
    usage
    exit -1
  fi
  if [[ $ARGC -ge 1 && ${ARGV[$i]} == "--verbose" ]]; then
    VERBOSE=true
    continue
  fi
  if [[ $ARGC -ge 1 && ${ARGV[$i]:0:2} == "--" ]]; then
    echo "Unknown option ${ARGV[$i]}"
    exit -1
  fi

  args+=("${ARGV[$i]}")
  $VERBOSE && echo "Parsing Args: \"${ARGV[$i]}\""
  ((non_flag_args+=1))
done

# output help if they're getting it wrong...
if [ $non_flag_args_required -ne 0 ] && [[ $ARGC -eq 0 || ! $ARGC -ge $non_flag_args_required ]]; then
  [ $ARGC -gt 0 ] && echo "Expected $non_flag_args_required args, but only got $ARGC"
  usage
  exit -1
fi
################################

function filepath_path { local file=$1; echo `dirname -- "${file}"`; }
function filepath_name { local file=$1; echo `basename -- "${file%.*}"`; }
function filepath_ext { local file=$1; echo "${file##*.}"; }

function do_conversion {
  local infile="$1"
  local base_dir="$2"
  local outfile="$base_dir/$(filepath_name "${infile}")_sfz"

  if [ ! -d "$outfile" ]; then
    echo "======================================================================"
    echo "Converting \"$infile\" to \"$outfile\" (thanks polyphone!)"
    mkdir -p "$(filepath_path "${outfile}")"
    /Applications/polyphone-2.2.app/Contents/MacOS/polyphone -3 -i "$infile" -d . -o "${outfile}"
  else
    echo "Skipping \"$infile\" to \"$outfile\" (exists)"
  fi
}

for arg in "${args[@]}"; do
  infile="$arg"
  if [ -d "$infile" ]; then
    echo "[$scriptname] recursing into directory: \"$infile\""
    find "$infile" -type f -name "*.sf2" | while read f; do
      do_conversion "$f" "$infile"
    done
  elif [ -f "$infile" ]; then
    do_conversion "$infile" "$(filepath_path "${infile}")"
  fi
done;