#!/bin/sh
# mkvers.sh - Make version information for cygwin DLL
#
# This file is part of Cygwin.
#
# This software is a copyrighted work licensed under the terms of the
# Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
# details.

exec 9> version.cc

#
# Arg 1 is the name of the version include file
#
incfile="$1"; shift
rcfile="$1"; shift
windres="$1"; shift
iflags=
# Find header file locations
while [ -n "$*" ]; do
  case "$1" in
  -I*)
    iflags="$iflags $1"
    ;;
  -idirafter)
    shift
    iflags="$iflags -I$1"
      ;;
  esac
  shift
done

[ -r $incfile ] || {
  echo "**** Couldn't open file '$incfile'.  Aborting."
}

parse_preproc_flags() {
  # Since we're manually specifying the preprocessor, pass the default flags
  # normally defined.
  ccflags="--preprocessor=$1 --preprocessor-arg=-E \
	   --preprocessor-arg=-xc-header --define=RC_INVOKED "
  shift
  while [ -n "$*" ]; do
    case "$1" in
    # We need to be able to find the just-built cc1 binary.
    -B*)
      ccflags="$ccflags --preprocessor-arg=$1"
      ;;
    esac
    shift
  done
}

parse_preproc_flags $CC



#
# Load the current date (or SOURCE_DATE_EPOCH) so we can work on individual fields
#
set -$- $(date ${SOURCE_DATE_EPOCH:+-d @}${SOURCE_DATE_EPOCH} -u +"%m %d %Y %H:%M")
m=$1 d=$2 y=$3 hhmm=$4
#
# Set date into YYYY-MM-DD HH:MM:SS format
#
builddate="$y-$m-$d $hhmm"
echo "$builddate"

set -$- ''

#
# Output the initial part of version.cc
#
cat <<EOF 1>&9
#include "config.h"
#include "cygwin_version.h"

#define strval(x) #x
#define str(x) strval(x)
#define shared_data_version str(CYGWIN_VERSION_SHARED_DATA)

const char *cygwin_version_strings =
  "BEGIN_CYGWIN_VERSION_INFO\n"
EOF

#
# Split version file into dir and filename components
#
dir=$(dirname $incfile)
fn=$(basename $incfile)

#
# Look in the include file CVS directory for a CVS Tag file.  This file,
# if it exists, will contain the name of the sticky tag associated with
# the current build.  Save that for output later.
#
cvs_tag="$(sed -e '/dontuse/d' -e 's%^.\(.*\)%\1%' $dir/CVS/Tag 2>/dev/null)"

wv_cvs_tag="$cvs_tag"
[ -n "$cvs_tag" ] && cvs_tag=" CVS tag"'
'"$cvs_tag"

#
# Look in the source directory containing the include/cygwin/version.h
# and set dir accordingly.
dir=$(echo $dir | sed -e 's%/include/cygwin.*$%%' -e 's%include/cygwin.*$%.%')

#
# Scan the version.h file for strings that begin with CYGWIN_INFO or
# CYGWIN_VERSION.  Perform crude parsing on the lines to get the values
# associated with these values and then pipe it into a while loop which
# outputs these values in C palatable format for inclusion in the DLL
# with a '%% ' identifier that will introduce "interesting" strings.
# These strings are strictly for use by a user to scan the DLL for
# interesting information.
#
(
  sed -n -e 's%#define CYGWIN_INFO_\([A-Z_]*\)[ 	][ 	]*\([a-zA-Z0-9"][^/]*\).*%_\1\
\2%p' -e 's%#define CYGWIN_VERSION_\([A-Z_]*\)[ 	][ 	]*\([a-zA-Z0-9"][^/]*\).*%_\1\
\2%p' $incfile | sed -e 's/["\\]//g'  -e '/^_/y/ABCDEFGHIJKLMNOPQRSTUVWXYZ_/abcdefghijklmnopqrstuvwxyz /';
  echo ' build date'; echo $build_date;
  [ -n "$cvs_tag" ] && echo "$cvs_tag";
) | while read var; do
    read val
cat <<EOF
  "%%% Cygwin $var: $val\n"
EOF
done | tee /tmp/mkvers.$$ 1>&9

trap "rm -f /tmp/mkvers.$$" 0 1 2 15

#
# Finally, output the shared ID and set up the cygwin_version structure
# for use by Cygwin itself.
#
cat <<EOF 1>&9
#ifdef DEBUGGING
  "%%% Cygwin shared id: " CYGWIN_VERSION_DLL_IDENTIFIER "S" shared_data_version "-$builddate\n"
#else
  "%%% Cygwin shared id: " CYGWIN_VERSION_DLL_IDENTIFIER "S" shared_data_version "\n"
#endif
  "END_CYGWIN_VERSION_INFO\n\0";
cygwin_version_info cygwin_version =
{
  CYGWIN_VERSION_API_MAJOR, CYGWIN_VERSION_API_MINOR,
  CYGWIN_VERSION_DLL_MAJOR, CYGWIN_VERSION_DLL_MINOR,
  CYGWIN_VERSION_SHARED_DATA,
  CYGWIN_VERSION_MOUNT_REGISTRY,
  "$builddate",
#ifdef DEBUGGING
  CYGWIN_VERSION_DLL_IDENTIFIER "S" shared_data_version "-$builddate"
#else
  CYGWIN_VERSION_DLL_IDENTIFIER "S" shared_data_version
#endif
};
EOF

#
# Generate winver.o using cygwin/version.h information.
# Turn the cygwin major number from some large number to something like 1.1.0.
#
eval $(sed -n 's/^.*dll \(m[ai][jn]or\): \([0-9]*\)[^0-9]*$/\1=\2/p' /tmp/mkvers.$$)
cygverhigh=$(expr $major / 1000)
cygverlow=$(expr $major % 1000)
cygwin_ver="$cygverhigh.$cygverlow.$minor"
if [ -n "$cvs_tag" ]
then
  cvs_tag="$(echo $wv_cvs_tag | sed -e 's/-branch.*//')"
  cygwin_ver="$cygwin_ver-$cvs_tag"
fi

echo "Version $cygwin_ver"
set -$- $builddate
$windres $iflags $ccflags \
	 --define CYGWIN_BUILD_DATE="$1" \
	 --define CYGWIN_BUILD_TIME="$2" \
	 --define CYGWIN_BUILD_YEAR=$y \
	 --define CYGWIN_VERSION='"'"$cygwin_ver"'"' \
	 $rcfile winver.o
