#!/bin/sh
#------------------------------------------------------------------------------
# cb2Bib configuration script:
# - Checks for QTDIR
#   -- If set, checks for qmake at QTDIR
#   -- If not set, checks for qmake at PATH and other usual locations
# - Manages Installation directory data
# - Runs qmake
#
# Modifications for the cb2Bib Gentoo build descriptions
# by Hugo Mildenberger and Andreas K. Huettel
# Copyright 2009 Hugo Mildenberger and Andreas K. Huettel
# - December 2009: do not use temporary files, fix sed regular
#   expression, set both enable/disable for options, and add 
#   call to qmake option.
#
# Modifications for the cb2Bib Debian distribution package
# by Filippo Rusconi
# Copyright 2009 Filippo Rusconi
# - June 2009: replace ' ' with ':' along with use of IFS=: as
#   word-splitting delimiter for PATH-related tasks (Thanks Lionel
#   Mamane).
# - September 2009: protect all shell variables against spaces.
#
#------------------------------------------------------------------------------
# ( originally based upon 'shell script to configure doxygen',
#   http://www.stack.nl/~dimitri/doxygen/
#   Copyright (C) 1997-2001 by Dimitri van Heesch )
#
# Permission to use, copy, modify, and distribute this software and its
# documentation under the terms of the GNU General Public License is hereby
# granted. No representations are made about the suitability of this software
# for any purpose. It is provided "as is" without express or implied warranty
# See the GNU General Public License for more details
#------------------------------------------------------------------------------

platform=`uname -s`

echo
echo "Configuration script for cb2Bib (Unix/Linux/MacOSX)"
echo
f_prefix=/usr
f_bindir=/usr/bin
f_datadir=/usr/share/cb2bib
f_desktopdatadir=/usr/share/applications
f_icondir=/usr/share/pixmaps

f_qmake=NO
f_make=NO
f_enable_cbpoll=NO
f_enable_lz4=y
f_enable_lzo=NO
f_enable_lzsse=NO
f_enable_qt_zlib=NO
f_enable_avx2=NO
f_disable_qmake_call=NO

while test -n "$1";  do
  case $1 in
    --prefix | -prefix)
       shift; f_prefix="$1" ; f_bindir="$1/bin" ; f_datadir="$1/share/cb2bib" ; f_desktopdatadir="$1/share/applications" ; f_icondir="$1/share/pixmaps"
       ;;
    --bindir | -bindir)
       shift; unset f_prefix ; f_bindir="$1"
       ;;
    --datadir | -datadir)
       shift; unset f_prefix ; f_datadir="$1/cb2bib"
       ;;
    --desktopdatadir | -desktopdatadir)
       shift; unset f_prefix ; f_desktopdatadir="$1"
       ;;
    --icondir | -icondir)
       shift; unset f_prefix ; f_icondir="$1"
       ;;
    --qmakepath | -qmakepath)
       shift; unset f_qmake ; f_qmake="$1"
       ;;
    -h | --help | -help)
       f_help=y
       ;;
    --enable-cbpoll | -enable-cbpoll)
       f_enable_cbpoll=y
       ;;
    --disable-cbpoll | -disable-cbpoll)
       f_enable_cbpoll=NO
       ;;
    --enable-lzo | -enable-lzo)
       f_enable_lz4=NO ; f_enable_lzo=y ; f_enable_lzsse=NO ; f_enable_qt_zlib=NO
       ;;
    --enable-lzsse | -enable-lzsse)
       f_enable_lz4=NO ; f_enable_lzO=NO ; f_enable_lzsse=y ; f_enable_qt_zlib=NO
       ;;
    --enable-qt-zlib | -enable-qt-zlib)
       f_enable_lz4=NO ; f_enable_lzO=NO ; f_enable_lzsse=NO ; f_enable_qt_zlib=y
       ;;
    --enable-lz4 | -enable-lz4)
       f_enable_lz4=y ; f_enable_lzO=NO ; f_enable_lzsse=NO ; f_enable_qt_zlib=NO
       ;;
    --enable-avx2 | -enable-avx2)
       f_enable_avx2=y
       ;;
    --enable-qmake-call | -enable-qmake-call)
       f_disable_qmake_call=NO
       ;;
    --disable-qmake-call | -disable-qmake-call)
       f_disable_qmake_call=y
       ;;
    *)
       echo "-----------------------------------------------------------------------"
       echo Error: Unknown argument $1
       echo "-----------------------------------------------------------------------"
       echo ""
       f_help=y
       f_error=y
       ;;
  esac
  shift
done

if test "$f_help" = y; then
  cat <<EOF
Usage: $0 [--help] [--prefix dir] [--bindir dir] [--datadir dir] ...

Options:

  General:
  --help                Print this help
  --qmakepath dir       qmake fullpath name
                        [example: --qmakepath /usr/bin/qmake]
  --prefix dir          Installation prefix directory
                        [default: /usr]
  --bindir dir          Executable installation directory
                        [default: /usr/bin]
  --datadir dir         Data installation directory
                        [default: /usr/share/cb2bib]
  --enable-lz4          Enable linking with LZ4 library [default]
  --enable-lzo          Enable linking with LZO library
  --enable-qt-zlib      Enable linking with Qt's ZLIB library
  --enable-lzsse        Enable linking with LZSSE library
                        [see ./src/c2b/lzsse4/README.txt]
  --enable-avx2         Enable using AVX2 instructions
  --enable-qmake-call   Enable configure to call qmake [default]
  --disable-qmake-call  Disable configure to call qmake


  Unix/Linux only:
  --desktopdatadir dir  Desktop data installation directory
                        [default: /usr/share/applications]
  --icondir dir         Icon installation directory
                        [default: /usr/share/pixmaps]
  --enable-cbpoll       Enable clipboard poll
  --disable-cbpoll      Disable clipboard poll [default]

EOF
  test "$f_error" = y && exit 1
  exit 0;
fi

echo "-----------------------------------------------------------------------"
echo "Platform: $platform"
echo "-----------------------------------------------------------------------"
echo "Setting installation directories..."
if test "$f_prefix"; then
  echo "Setting installation relative to dir: $f_prefix"
fi
if test "$f_bindir"; then
  echo "Setting installation executable to dir: $f_bindir"
fi
if test "$f_datadir"; then
  echo "Setting installation cb2Bib data files relative to dir: $f_datadir"
fi
if test "$f_desktopdatadir"; then
  echo "Setting installation desktop data files to dir: $f_desktopdatadir"
fi
if test "$f_icondir"; then
  echo "Setting installation icon file to dir: $f_icondir"
fi
echo "-----------------------------------------------------------------------"

echo
echo "-----------------------------------------------------------------------"
echo "cb2Bib Info:"
echo "-----------------------------------------------------------------------"
echo "- This version requires Qt 5.7.0 or later."
echo " "
echo "- Set the environment variable QTDIR if this script cannot determine"
echo "  the right Qt qmake."
echo "- QTDIR will only be used during configuration; it can later be reset"
echo "  to its original value."
echo " "
echo "- Alternatively, set Qt5 qmake's fullpath name with"
echo "  --qmakepath flag."
echo "-----------------------------------------------------------------------"

#- check for qt ---------------------------------------------------------------

echo
echo "Checking for Qt/qmake:"
  if test "$f_qmake" != NO; then
    echo -n "Checking for qmake tool... "
    if test ! -x "$f_qmake"; then
      echo "Specified $f_qmake could not be found."
      exit 2
    else
      echo "using $f_qmake."
    fi
  elif test -z "$QTDIR"; then
    echo "Environment variable QTDIR not set, checking elsewhere for qmake..."
    echo -n "Checking for qmake tool... "
    if test "$f_qmake" = NO; then
      qmake_name="qmake-qt5"
      qmake_dirs="/usr/bin:/usr/lib64/qt5/bin:/usr/lib/qt5/bin:/usr/bin:/usr/lib/qt/bin:/usr/share/qt/bin:/Developer/Tools/Qt:$PATH"
      qmake_prog=NO
      IFS=:
      for j in $qmake_dirs; do
        if test -x "$j/$qmake_name"; then
          qmake_prog="$j/$qmake_name"
          break 1
        fi
      done
      unset IFS
      f_qmake="$qmake_prog" 
    fi
    if test "$f_qmake" = NO; then
      qmake_name="qmake"
      qmake_dirs="/usr/lib/x86_64-linux-gnu/qt5/bin:/usr/lib/i386-linux-gnu/qt5/bin:/usr/lib/arm-linux-gnueabi/qt5/bin:/usr/lib/mips-linux-gnu/qt5/bin:/usr/lib/powerpc-linux-gnu/qt5/bin:/usr/lib/powerpc64le-linux-gnu/qt5/bin:/usr/lib64/qt5/bin:/usr/lib/qt5/bin:/Developer/Tools/Qt:$PATH"
      qmake_prog=NO
      IFS=:
      for j in $qmake_dirs; do
        if test -x "$j/$qmake_name"; then
          qmake_prog="$j/$qmake_name"
          break 1
        fi
      done
      unset IFS
      f_qmake="$qmake_prog" 
    fi
    if test "$f_qmake" = NO; then
      echo "not found!"
      echo
      echo "Please, check if required Qt/qmake is properly installed."
      echo "If so, set QTDIR environment variable to your Qt root directory."
      exit 2
    fi
    echo "using $f_qmake."
  else
    echo "Using QTDIR environment variable for Qt directory location."
    echo "Checking for Qt tools at $QTDIR..."
    echo -n "Checking for qmake tool... "
    if test ! -x "$QTDIR/bin/qmake"; then
      echo "QTDIR is set, but the qmake could not be found in $QTDIR/bin."
      exit 2
    else
      f_qmake="$QTDIR/bin/qmake"
      echo "using $QTDIR/bin/qmake."
    fi
  fi
  "$f_qmake" -v


#------------------------------------------------------------------------------
# Set directories for binaries search
#------------------------------------------------------------------------------
bin_dirs="/usr/bin:/usr/local/bin:/bin:/sbin:$PATH"
#------------------------------------------------------------------------------


# - check for make ------------------------------------------------------------

echo
echo "Checking for additional tools:"
echo -n "Checking for make..."
if test "$f_make" = NO; then
  make_names="gmake:make"
  make_prog=NO
  IFS=:
  for i in $make_names; do
    for j in $bin_dirs ; do
      if test -x "$j/$i"; then
        if test -n "`$j/$i --version 2>/dev/null | grep GNU`"; then
          make_prog="$j/$i"
          break 2
        fi
      fi
    done
  done
  unset IFS
  f_make="$make_prog" 
fi

if test "$f_make" != NO; then
  echo "using $f_make."
else
  echo "not found."
fi

#- Setting dirs and start qmake -----------------------------------------------

echo
sed -i -e 's%^.*cb2bibdata\.path .*$%cb2bibdata.path = '$f_datadir'%g' \
       -e 's%^.*cb2bibdoc\.path .*$%cb2bibdoc.path = '$f_datadir'/doc%g' \
       -e 's%^.*target\.path .*$%target.path = '$f_bindir'%g' \
       -e 's%^.*script\.path .*$%script.path = '$f_bindir'%g' \
       -e 's%^.*desktop\.path .*$%desktop.path = '$f_desktopdatadir'%g' \
       -e 's%^.*icons\.path .*$%icons.path = '$f_icondir'%g' src/src.pro
sed -i 's%^const QLatin1String C2B_DATA_DIR.*$%const QLatin1String C2B_DATA_DIR("'$f_datadir'/");%g' src/c2b/cb2bib_parameters.h

f_configs=
if test "$f_enable_cbpoll" = y; then
  echo "Setting clipboardPoll enabled"
  f_configs="$f_configs -config enable_cbpoll"
fi
if test "$f_enable_lz4" = y; then
  echo "Setting LZ4 enabled"
  f_configs="$f_configs -config use_lz4"
fi
if test "$f_enable_lzo" = y; then
  echo "Setting LZO enabled"
  f_configs="$f_configs -config use_lzo"
fi
if test "$f_enable_lzsse" = y; then
  echo "Setting LZSSE enabled"
  f_configs="$f_configs -config use_lzsse"
fi
if test "$f_enable_qt_zlib" = y; then
  echo "Setting Qt ZLIB enabled"
  f_configs="$f_configs -config use_qt_zlib"
fi
if test "$f_enable_avx2" = y; then
  echo "Setting AVX2 enabled"
  f_configs="$f_configs -config use_avx2"
fi

if test "$f_disable_qmake_call" = NO; then
  echo ""
  echo "Running $f_qmake $f_configs -o Makefile"
  "$f_qmake" $f_configs -o Makefile
else
  echo ""
  echo "Writing qmake flags to file 'qmake-additional-args'"
  echo $f_configs > qmake-additional-args
fi

echo " "
if test "$f_make" = NO; then
  echo "-----------------------------------------------------------------------"
  echo "Configuration ended. 'make' not found."
  echo "Build toolchain might not be completed."
  echo "-----------------------------------------------------------------------"
  exit 1
else
  echo "-----------------------------------------------------------------------"
  echo "- NOTE: Type 'make distclean' or, preferably, untar again to set other"
  echo "  configure flags."
  echo "-----------------------------------------------------------------------"
  echo " "
  echo "-----------------------------------------------------------------------"
  if test "$f_disable_qmake_call" = NO; then
    echo "Configuration ended. Type 'make' and 'make install'."
  else
    echo "Configuration ended. Run qmake, and type 'make' and 'make install'."
  fi
  echo "-----------------------------------------------------------------------"
  echo " "
fi