# file      : xsd/buildfile
# license   : GNU GPL v2 + exceptions; see accompanying LICENSE file

import libs  = libxsd-frontend%lib{xsd-frontend}
import libs += libcutl%lib{cutl}
import libs += libxerces-c%lib{xerces-c}

ops = options cxx/options cxx/parser/options cxx/tree/options

./: exe{xsd}: {hxx ixx txx cxx}{** -version -{$ops} -pregenerated/**} \
              {hxx}{version}                                          \
              $libs

# Target metadata, see also --build2-metadata in xsd.cxx.
#
# Note that xsd does not query any environment variables.
#
exe{xsd}:
{
  export.metadata = 1 xsd
  xsd.name = [string] xsd
  xsd.version  = [string] $version
  xsd.checksum = [string] $version
}

hxx{version}: in{version} $src_root/manifest

## Consumption build ($develop == false).
#

# Use pregenerated versions in the consumption build.
#
exe{xsd}: pregenerated/{hxx ixx cxx}{**}: include = (!$develop)

if! $develop
  cxx.poptions =+ "-I($src_base/pregenerated)" # Note: must come first.

# Distribute pregenerated versions only in the consumption build.
#
pregenerated/{hxx ixx cxx}{*}: dist = (!$develop)

#
##

## Development build ($develop == true).
#

exe{xsd}: {hxx ixx cxx}{$ops}: include = $develop

if $develop
  import! [metadata] cli = cli%exe{cli}

# In the development build distribute regenerated {hxx ixx cxx}{options},
# remapping their locations to the paths of the pregenerated versions (which
# are only distributed in the consumption build; see above). This way we make
# sure that the distributed files are always up-to-date.
#
for f: $ops
{
  d = $directory($f) # empty, cxx/, etc.

  <{hxx ixx cxx}{$f}>: cli{$f}
  {
    dist = ($develop ? $relative([dir_path] "pregenerated/xsd/$d", $d) : false)

    # Symlink the generated code in src for convenience of development.
    #
    backlink = true
  }
}

<hxx{~'/(.*)/'} ixx{~'/\1/'} cxx{~'/\1/'}>: cli{~'/\1/'} $cli
%
if $develop
{{
  t = $path($>[0]).t

  depdb dyndep --byproduct --file $t

  h = $path($>[0])
  i = $path($>[1])
  c = $path($>[2])

  d = $directory($h)
  p = $string($leaf($d, $out_root)) # xsd, xsd/cxx, etc

  options = --std c++11 -I $src_root --include-prefix $p              \
            --guard-prefix $regex.replace($ucase($p), '[/\\]', '_')   \
            --generate-specifier --generate-file-scanner              \
            --suppress-undocumented --ostream-type ::std::wostream    \
            --exclude-base --include-with-brackets --option-length 28 \
            --cxx-prologue '#include <xsd/options-parser.hxx>'

  $cli $options --generate-dep --dep-file $t -o $d $path($<[0])

  # If the result differs from the pregenerated version, copy it over.
  #
  d = [dir_path] $src_base/pregenerated/$p

  dh = $d/$leaf($h)
  di = $d/$leaf($i)
  dc = $d/$leaf($c)

  if diff $dh $h >- && \
     diff $di $i >- && \
     diff $dc $c >-
    exit
  end

  cp $h $dh
  cp $i $di
  cp $c $dc
}}

#
##

# Pass the copyright notice extracted from the LICENSE file.
#
obj{xsd cxx/parser/generator cxx/tree/generator}: \
  cxx.poptions += -DXSD_COPYRIGHT=\"$copyright\"