QGIS/scripts/sipdiff

#!/usr/bin/env bash

# ARGUMENTS
REMOVE_COMMENTS=YES
while getopts ":c" opt; do
  case $opt in
    c)
      # keep comments
      REMOVE_COMMENTS=NO
      ;;
    \?)
      echo "Invalid option: -$OPTARG" >&2
      exit 1
      ;;
  esac
done
shift $(expr $OPTIND - 1)

# GNU prefix command for mac os support (gsed, gsplit)
GP=
if [[ "$OSTYPE" =~ darwin* ]]; then
  GP=g
fi

for file in $*; do
  d=${file#*/}
  d=${d%/*}
  f=${file##*/}
  f=${f%.*}

  tempfile=$(${GP}mktemp ${f}XXXX --suffix=.h)

  # Remove comments
  if [[ "$REMOVE_COMMENTS" =~ YES ]]; then
    ${GP}sed 's/a/aA/g;s/__/aB/g;s/#/aC/g' "src/$d/$f.h" | cpp -E $arg - | ${GP}sed 's/aC/#/g;s/aB/__/g;s/aA/a/g' > $tempfile
  else
    cp "src/$d/$f.h" $tempfile
  fi

  # Remove override keyword
  ${GP}sed -i 's/ override;/;/g' $tempfile

  # Remove preprocessor directives
  ${GP}sed -i '/^#/d' $tempfile

  # Remove CORE_EXPORT etc
  ${GP}sed -i 's/ [A-Z]*_EXPORT//g' $tempfile

  # Remove public keyword from inherited classes
  ${GP}sed -i 's/\(class.*:\) public\(.*\)/\1\2/g' $tempfile

  # Remove Q_OBJECT,ENUMS,PROPERTY
  ${GP}sed -i -r '/^\s*Q_(OBJECT|ENUMS|PROPERTY).*?$/d' $tempfile

  # Remove function definition in header
  ${GP}sed -i -r 's/^(\s*)?(virtual |static )?(inline )?(void|bool|int|double|Q\w+)(\*?)(\s+[^ ]*?\(.*?\)( const)?)\s*\{.*?\}$/\1\2\4\5\6;/g' $tempfile

  # Remove nullptr
  ${GP}sed -i 's/nullptr/0/g' $tempfile

  # Remove forward declarations
  ${GP}sed -i -r '/^\s*class Q\w+;$/d' $tempfile

  # Remove Q_INVOKABLE
  ${GP}sed -i 's/Q_INVOKABLE //g' $tempfile

  vimdiff $tempfile python/$d/$f.sip

  rm $tempfile
done