#!/bin/bash
# $Id$

# Acknowledgment:
#  The following code is a modified version of an original work written by
#  Greg Schafer for the "DIY Linux" project and is included here with his
#  permission.
#  ref: http://www.diy-linux.org
#

set -e

  local CMP_DIR=$1
  local F L BN
  local ALL_FILES=/tmp/allfiles.$$
  local UNIQUE_FILES=/tmp/uniquefiles.$$

  # Run ica_prep if it hasn't been done already
  if [ ! -f "$CMP_DIR/icaprep" ]; then

    echo -n "Removing symbolic links in ${CMP_DIR}... "
    find $CMP_DIR -type l | xargs rm -f
    echo "done."

    echo -n "Gunzipping \".gz\" files in ${CMP_DIR}... "
    find $CMP_DIR -name '*.gz' | xargs gunzip
    echo "done."

    #echo -n "Bunzipping \".bz2\" files in ${CMP_DIR}... "
    #find $CMP_DIR -name '*.bz2' | xargs bunzip2
    #echo "done."

    # ar archives contain date & time stamp info that causes us
    # grief when trying to find differences. Here we perform some
    # hackery to allow easy diffing. Essentially, replace each
    # archive with a dir of the same name and extract the object
    # files from the archive into this dir. Despite their names,
    # libieee.a & libmcheck.a are not actual ar archives.
    echo -n "Extracting object files from \".a\" files in ${CMP_DIR}... "
    L=$(find $CMP_DIR -name '*.a' ! -name 'libieee.a' ! -name 'libmcheck.a')
    for F in $L; do
      mv $F ${F}.XX
      mkdir $F
      cd $F
      BN=${F##*/}
      ar x ../${BN}.XX || {
      echo -e "\nError: ar archive extraction failed!\n" >&2
      exit 1
      }
      rm -f ../${BN}.XX
    done
    echo "done."

    echo -n "Stripping (debug) symbols from \".o\" files in ${CMP_DIR}... "
    find $CMP_DIR -name '*.o' | xargs strip -p -g 2>/dev/null
    echo "done."

    echo -n "Stripping (all) symbols from files OTHER THAN \".o\" files in ${CMP_DIR}... "
    find $CMP_DIR ! -name '*.o' | xargs strip -p 2>/dev/null || :
    echo "done."

    # We're all done
    echo -en "\nSuccess: ICA preparation for "
    echo -e "${CMP_DIR} complete.\n"
    touch $CMP_DIR/icaprep
  else
   echo -e "\n$CMP_DIR was already processed\n"
  fi