#!/usr/bin/env bash

. "$(git rev-parse --show-toplevel)/gitTools/functions"

ASTYLE=`gitTool astyle`
GAWK=`gitTool gawk`

if [ ${isWindows} == true ]; then
  DOS2UNIX=`gitTool dos2unix`
  function ConvertToUnix () {
    $DOS2UNIX -u2d $1 1>/dev/null 2>&1
  }
else
  DOS2UNIX=ignored
  function ConvertToUnix () {
    echo -n
  }
fi

if [ x"$ASTYLE" == x -o x"$GAWK" == x -o x"DOS2UNIX" == x ]; then
  if [ x$1 == x ]; then
    cat
  fi
  
  exit 0
fi

if [ x$1 == x ]; then
  fileName=$$
  cat > $fileName
else
  fileName=$1
fi

$ASTYLE --break-blocks \
        --convert-tabs \
        --indent-preprocessor \
        --indent-switches \
        --indent=spaces=2 \
        --keep-one-line-blocks \
        --keep-one-line-statements \
        --min-conditional-indent=0 \
        --mode=c \
        --pad-header \
        --pad-oper \
        --quiet \
        --style=gnu \
        --suffix=none \
        --unpad-paren \
        $fileName

$GAWK -- '
BEGIN {
  lastEmpty = 0
  lastOpenBracket = 0
  lastClosingBracket = 0
}

END {
  if (lastClosingBracket == 1) {
    printf "\n"
  }
}

$0 ~ "^ *$" {
  lastEmpty = 1
}

$0 !~ "^ *$" {
  if (lastEmpty == 1) {
    if ($0 !~ "^ *}.*$") printf "\n"
    lastEmpty = 0
  }

  if (lastClosingBracket == 1) {
    if ($0 !~ "^ *;")  printf "\n"
    lastClosingBracket = 0
  }

  gsub(/ +$/, "")
  gsub(/\( +/, "(")
  gsub(/\{ +/, "{")
  gsub(/^\*/, " *")
  gsub(/^ +#/, "#")
  
  $0 = gensub(/([^ ]) +\)$/, "\\1)", "g")
  $0 = gensub(/([^ ]) +;$/, "\\1;", "g")
  $0 = gensub(/([^ ]) +}$/, "\\1}", "g")
  
  if ($0 ~ ".*}$") {
    lastClosingBracket = 1
    printf "%s", $0
  }
  else {
    lastClosingBracket = 0
    printf "%s\n", $0
  }

  if ($0 ~ "{$") {
    lastOpenBracket = 1
  } else {
    lastOpenBracket = 0
  }
}
' $fileName > $fileName.tmp && \
ConvertToUnix $fileName.tmp && \
mv -f $fileName.tmp $fileName 

if [ x$1 == x ]; then
  cat $fileName
  rm $fileName
fi