#! /bin/sh

# Copyright (C) 2017 André Klitzing
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#
# This is a small script to copy the required files from a LIBJPEG tarball
# into 3rdparty/libjpeg/.

if [ $# -ne 2 ]; then
    echo "Usage: $0 LIBJPEG_tarball_dir/ \$QTDIR/src/3rdparty/libjpeg/"
    exit 1
fi

LIBJPEG_DIR=$1
TARGET_DIR=$2

if [ ! -d "$LIBJPEG_DIR" -o ! -r "$LIBJPEG_DIR" -o ! -d "$TARGET_DIR" -o ! -w "$TARGET_DIR" ]; then
    echo "Either the LIBJPEG source dir or the target dir do not exist,"
    echo "are not directories or have the wrong permissions."
    exit 2
fi

# with 1 argument, copies LIBJPEG_DIR/$1 to TARGET_DIR/$1
# with 2 arguments, copies LIBJPEG_DIR/$1 to TARGET_DIR/$2
copy_file() {
    if [ $# -lt 1 -o $# -gt 2  ]; then
        echo "Wrong number of arguments to copy_file"
        exit 3
    fi

    SOURCE_FILE=$1
    if [ -n "$2" ]; then
        DEST_FILE=$2
    else
        DEST_FILE=$1
    fi

    mkdir -p "$TARGET_DIR/$(dirname "$SOURCE_FILE")"
    cp "$LIBJPEG_DIR/$SOURCE_FILE" "$TARGET_DIR/$DEST_FILE"
}

copy_file "LICENSE.md" "LICENSE"
copy_file "ChangeLog.md" "ChangeLog.md"
copy_file "README.md" "README.md"
copy_file "README.ijg" "README.ijg"

FILES="
   jconfig.h.in
   jconfigint.h.in

   jaricom.c
   jcapimin.c
   jcapistd.c
   jcarith.c
   jccoefct.c
   jccolext.c
   jccolor.c
   jcdctmgr.c
   jcdiffct.c
   jchuff.c
   jchuff.h
   jcicc.c
   jcinit.c
   jclhuff.c
   jclossls.c
   jcmainct.c
   jcmarker.c
   jcmaster.c
   jcmaster.h
   jcomapi.c
   jcparam.c
   jcphuff.c
   jcprepct.c
   jcsample.c
   jctrans.c
   jdapimin.c
   jdapistd.c
   jdarith.c
   jdatadst.c
   jdatasrc.c
   jdcoefct.c
   jdcoefct.h
   jdcolext.c
   jdcol565.c
   jdcolor.c
   jdct.h
   jddctmgr.c
   jddiffct.c
   jdhuff.c
   jdhuff.h
   jdicc.c
   jdphuff.c
   jdinput.c
   jdlhuff.c
   jdlossls.c
   jlossls.h
   jdmainct.c
   jdmainct.h
   jdmarker.c
   jdmaster.c
   jdmaster.h
   jdmerge.c
   jdmerge.h
   jdmrgext.c
   jdmrg565.c
   jdpostct.c
   jdsample.c
   jdsample.h
   jdtrans.c
   jerror.c
   jerror.h
   jfdctflt.c
   jfdctfst.c
   jfdctint.c
   jidctred.c
   jidctflt.c
   jidctfst.c
   jidctint.c
   jinclude.h
   jpegapicomp.h
   jpegint.h
   jpeglib.h
   jmemmgr.c
   jmemnobs.c
   jmemsys.h
   jmorecfg.h
   jpeg_nbits.h
   jquant1.c
   jquant2.c
   jsamplecomp.h
   jsimd.h
   jsimddct.h
   jstdhuff.c
   jutils.c
"

for i in $FILES; do
    copy_file "src/$i" "src/$i"
done
copy_file "src/jversion.h.in" "src/jversion.h"

cyear=$(grep COPYRIGHT_YEAR $LIBJPEG_DIR/CMakeLists.txt | sed -e 's/.*"\(.*\)".*/\1/')
sed -i -e "s/@COPYRIGHT_YEAR@/$cyear/" $TARGET_DIR/src/jversion.h

sed -n -e 's/^[ ]*"//
           s/\(\\n\)*"[ ]*\\*$//
           /JCOPYRIGHT.\ /,/^[ ]*$/ {
               /Copyright/p
           }
          ' $TARGET_DIR/src/jversion.h > $TARGET_DIR/COPYRIGHT.txt


echo Done. $TARGET_DIR/src/jconfig.h and jconfigint.h may need manual updating.