#=============================================================================
# CMake - Cross Platform Makefile Generator
# Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
subdirs(Doxygen KWStyle)

make_directory(${CMake_BINARY_DIR}/Docs)

# Add a documentation target.
set(DOC_FILES "")

set(MAN_FILES
  ${CMake_BINARY_DIR}/Docs/cmake.1
  ${CMake_BINARY_DIR}/Docs/cmakecommands.1
  ${CMake_BINARY_DIR}/Docs/cmakecompat.1
  ${CMake_BINARY_DIR}/Docs/cmakeprops.1
  ${CMake_BINARY_DIR}/Docs/cmakepolicies.1
  ${CMake_BINARY_DIR}/Docs/cmakevars.1
  ${CMake_BINARY_DIR}/Docs/cmakemodules.1
  )
set(TEXT_FILES
  ${CMake_BINARY_DIR}/Docs/cmake.txt
  ${CMake_BINARY_DIR}/Docs/cmake-policies.txt
  ${CMake_BINARY_DIR}/Docs/cmake-properties.txt
  ${CMake_BINARY_DIR}/Docs/cmake-variables.txt
  ${CMake_BINARY_DIR}/Docs/cmake-modules.txt
  ${CMake_BINARY_DIR}/Docs/cmake-commands.txt
  ${CMake_BINARY_DIR}/Docs/cmake-compatcommands.txt
  )
set(HTML_FILES
  ${CMake_BINARY_DIR}/Docs/cmake.html
  ${CMake_BINARY_DIR}/Docs/cmake-policies.html
  ${CMake_BINARY_DIR}/Docs/cmake-properties.html
  ${CMake_BINARY_DIR}/Docs/cmake-variables.html
  ${CMake_BINARY_DIR}/Docs/cmake-modules.html
  ${CMake_BINARY_DIR}/Docs/cmake-commands.html
  ${CMake_BINARY_DIR}/Docs/cmake-compatcommands.html
  )
set(DOCBOOK_FILES
  ${CMake_BINARY_DIR}/Docs/cmake.docbook
  )

macro(ADD_DOCS target dependency)
  # only generate the documentation if the target is actually built
  if(${target})
    add_custom_command(
      OUTPUT ${CMake_BINARY_DIR}/Docs/${target}.txt
      ${${target}-PATH} # Possibly set PATH, see below.
      COMMAND $<TARGET_FILE:${target}>
      ARGS --help-full ${CMake_BINARY_DIR}/Docs/${target}.txt
           --help-full ${CMake_BINARY_DIR}/Docs/${target}.html
           --help-full ${CMake_BINARY_DIR}/Docs/${target}.1
           --help-full ${CMake_BINARY_DIR}/Docs/${target}.docbook
      DEPENDS ${target}
      MAIN_DEPENDENCY ${dependency}
      )
    set(DOC_FILES ${DOC_FILES} ${CMake_BINARY_DIR}/Docs/${target}.txt)
    list(APPEND MAN_FILES ${CMake_BINARY_DIR}/Docs/${target}.1)
    list(APPEND TEXT_FILES ${CMake_BINARY_DIR}/Docs/${target}.txt)
    list(APPEND HTML_FILES ${CMake_BINARY_DIR}/Docs/${target}.html)
    list(APPEND DOCBOOK_FILES ${CMake_BINARY_DIR}/Docs/${target}.docbook)
  endif()
endmacro()

# Help cmake-gui find the Qt DLLs on Windows.
if(TARGET cmake-gui)
  get_property(Qt_BIN_DIR TARGET cmake-gui PROPERTY Qt_BIN_DIR)
  set(WIN_SHELL_GENS "Visual Studio|NMake|MinGW|Watcom|Borland")
  if(Qt_BIN_DIR AND "${CMAKE_GENERATOR}" MATCHES "${WIN_SHELL_GENS}"
      AND NOT CMAKE_NO_AUTO_QT_ENV)
    # Tell the macro to set the path before running cmake-gui.
    string(REPLACE ";" "\\;" _PATH "PATH=${Qt_BIN_DIR};%PATH%")
    set(cmake-gui-PATH COMMAND set "${_PATH}")
  endif()
endif()

# add the docs for the executables
ADD_DOCS(ctest      ${CMake_SOURCE_DIR}/Utilities/Doxygen/authors.txt)
ADD_DOCS(cpack      ${CMake_SOURCE_DIR}/Utilities/Doxygen/authors.txt)
ADD_DOCS(ccmake     ${CMake_SOURCE_DIR}/Utilities/Doxygen/authors.txt)
ADD_DOCS(CMakeSetup ${CMake_SOURCE_DIR}/Utilities/Doxygen/doxyfile.in)
ADD_DOCS(cmake-gui ${CMake_SOURCE_DIR}/Utilities/Doxygen/doxyfile.in)

# add the documentation for cmake itself

add_custom_command(
  OUTPUT ${CMake_BINARY_DIR}/Docs/cmake.txt
  COMMAND $<TARGET_FILE:cmake>
  ARGS --copyright ${CMake_BINARY_DIR}/Docs/Copyright.txt
       --help-full ${CMake_BINARY_DIR}/Docs/cmake.txt
       --help-full ${CMake_BINARY_DIR}/Docs/cmake.html
       --help-full ${CMake_BINARY_DIR}/Docs/cmake.1
       --help-full ${CMake_BINARY_DIR}/Docs/cmake.docbook
       --help-policies ${CMake_BINARY_DIR}/Docs/cmake-policies.txt
       --help-policies ${CMake_BINARY_DIR}/Docs/cmake-policies.html
       --help-policies ${CMake_BINARY_DIR}/Docs/cmakepolicies.1
       --help-properties ${CMake_BINARY_DIR}/Docs/cmake-properties.txt
       --help-properties ${CMake_BINARY_DIR}/Docs/cmake-properties.html
       --help-properties ${CMake_BINARY_DIR}/Docs/cmakeprops.1
       --help-variables ${CMake_BINARY_DIR}/Docs/cmake-variables.txt
       --help-variables ${CMake_BINARY_DIR}/Docs/cmake-variables.html
       --help-variables ${CMake_BINARY_DIR}/Docs/cmakevars.1
       --help-modules ${CMake_BINARY_DIR}/Docs/cmake-modules.txt
       --help-modules ${CMake_BINARY_DIR}/Docs/cmake-modules.html
       --help-modules ${CMake_BINARY_DIR}/Docs/cmakemodules.1
       --help-commands ${CMake_BINARY_DIR}/Docs/cmake-commands.txt
       --help-commands ${CMake_BINARY_DIR}/Docs/cmake-commands.html
       --help-commands ${CMake_BINARY_DIR}/Docs/cmakecommands.1
       --help-compatcommands ${CMake_BINARY_DIR}/Docs/cmake-compatcommands.txt
       --help-compatcommands ${CMake_BINARY_DIR}/Docs/cmake-compatcommands.html
       --help-compatcommands ${CMake_BINARY_DIR}/Docs/cmakecompat.1
  DEPENDS cmake
  MAIN_DEPENDENCY ${CMake_SOURCE_DIR}/Utilities/Doxygen/authors.txt
  )

install(FILES ${MAN_FILES} DESTINATION ${CMAKE_MAN_DIR}/man1)
install(FILES
  ${TEXT_FILES}
  ${HTML_FILES}
  ${DOCBOOK_FILES}
  DESTINATION ${CMAKE_DOC_DIR}
  )
install(FILES cmake.m4 DESTINATION share/aclocal)

# Drive documentation generation.
add_custom_target(documentation ALL DEPENDS ${DOC_FILES} ${CMake_BINARY_DIR}/Docs/cmake.txt )

# Documentation testing.
if(BUILD_TESTING)
  find_package(LibXml2 QUIET)
  if(NOT DEFINED LIBXML2_XMLLINT_EXECUTABLE)
    find_program(LIBXML2_XMLLINT_EXECUTABLE xmllint)
  endif()
  mark_as_advanced(LIBXML2_XMLLINT_EXECUTABLE)
  if(LIBXML2_XMLLINT_EXECUTABLE)
    execute_process(COMMAND ${LIBXML2_XMLLINT_EXECUTABLE} --help
      OUTPUT_VARIABLE _help ERROR_VARIABLE _err)
    if("${_help}" MATCHES "--path" AND "${_help}" MATCHES "--nonet")
      # We provide DTDs in the 'xml' directory so that xmllint can run without
      # network access.  Note that xmllints's --path option accepts a
      # space-separated list of url-encoded paths.
      set(_dtd_dir "${CMAKE_CURRENT_SOURCE_DIR}/xml")
      string(REPLACE " " "%20" _dtd_dir "${_dtd_dir}")
      string(REPLACE ":" "%3A" _dtd_dir "${_dtd_dir}")
      add_test(CMake.HTML
        ${LIBXML2_XMLLINT_EXECUTABLE} --valid --noout --nonet
        --path ${_dtd_dir}/xhtml1
        ${HTML_FILES}
        )
      add_test(CMake.DocBook
        ${LIBXML2_XMLLINT_EXECUTABLE} --valid --noout --nonet
        --path ${_dtd_dir}/docbook-4.5
        ${DOCBOOK_FILES}
        )
    endif()
  endif()
endif()
