# Copyright 2010-2011 Free Software Foundation, Inc.

# 

# This file is part of GNU Radio

# 

# GNU Radio is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 3, or (at your option)

# any later version.

# 

# GNU Radio is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

# 

# You should have received a copy of the GNU General Public License

# along with GNU Radio; see the file COPYING.  If not, write to

# the Free Software Foundation, Inc., 51 Franklin Street,

# Boston, MA 02110-1301, USA.

IF(DEFINED __INCLUDED_GR_SWIG_CMAKE)

    RETURN()

ENDIF()

SET(__INCLUDED_GR_SWIG_CMAKE TRUE)

INCLUDE(GrPython)

########################################################################

# Build a swig target for the common gnuradio use case. Usage:

# GR_SWIG_MAKE(target ifile ifile ifile...)

#

# Set the following variables before calling:

#   - GR_SWIG_FLAGS

#   - GR_SWIG_INCLUDE_DIRS

#   - GR_SWIG_LIBRARIES

#   - GR_SWIG_SOURCE_DEPS

#   - GR_SWIG_TARGET_DEPS

########################################################################

MACRO(GR_SWIG_MAKE name)

    SET(ifiles ${ARGN})

    #determine include dependencies for swig file

    EXECUTE_PROCESS(

        COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_BINARY_DIR}/get_swig_deps.py

        "${ifiles}" "${GR_SWIG_INCLUDE_DIRS}"

        OUTPUT_STRIP_TRAILING_WHITESPACE

        OUTPUT_VARIABLE SWIG_MODULE_${name}_EXTRA_DEPS

        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}

    )

    #append the specified include directories

    INCLUDE_DIRECTORIES(${GR_SWIG_INCLUDE_DIRS})

    LIST(APPEND SWIG_MODULE_${name}_EXTRA_DEPS ${GR_SWIG_SOURCE_DEPS})

    FIND_PACKAGE(PythonLibs)

    INCLUDE_DIRECTORIES(${PYTHON_INCLUDE_DIRS})

    #setup the swig flags with flags and include directories

    SET(CMAKE_SWIG_FLAGS -fvirtual -modern -keyword -w511 -module ${name} ${GR_SWIG_FLAGS})

    FOREACH(dir ${GR_SWIG_INCLUDE_DIRS})

        LIST(APPEND CMAKE_SWIG_FLAGS "-I${dir}")

    ENDFOREACH(dir)

    #set the C++ property on the swig .i file so it builds

    SET_SOURCE_FILES_PROPERTIES(${ifiles} PROPERTIES CPLUSPLUS ON)

    #setup the actual swig library target to be built

    INCLUDE(UseSWIG)

    SWIG_ADD_MODULE(${name} python ${ifiles})

    SWIG_LINK_LIBRARIES(${name} ${PYTHON_LIBRARIES} ${GR_SWIG_LIBRARIES})

    IF(GR_SWIG_TARGET_DEPS)

        ADD_DEPENDENCIES(${SWIG_MODULE_${name}_REAL_NAME} ${GR_SWIG_TARGET_DEPS})

    ENDIF(GR_SWIG_TARGET_DEPS)

ENDMACRO(GR_SWIG_MAKE)

########################################################################

# Install swig targets generated by GR_SWIG_MAKE. Usage:

# GR_SWIG_INSTALL(

#   TARGETS target target target...

#   [DESTINATION destination]

#   [COMPONENT component]

# )

########################################################################

MACRO(GR_SWIG_INSTALL)

    INCLUDE(CMakeParseArgumentsCopy)

    CMAKE_PARSE_ARGUMENTS(GR_SWIG_INSTALL "" "DESTINATION;COMPONENT" "TARGETS" ${ARGN})

    FOREACH(name ${GR_SWIG_INSTALL_TARGETS})

        INSTALL(TARGETS ${SWIG_MODULE_${name}_REAL_NAME}

            DESTINATION ${GR_SWIG_INSTALL_DESTINATION}

            COMPONENT ${GR_SWIG_INSTALL_COMPONENT}

        )

        INCLUDE(GrPython)

        GR_PYTHON_INSTALL(FILES ${CMAKE_CURRENT_BINARY_DIR}/${name}.py

            DESTINATION ${GR_SWIG_INSTALL_DESTINATION}

            COMPONENT ${GR_SWIG_INSTALL_COMPONENT}

        )

    ENDFOREACH(name)

ENDMACRO(GR_SWIG_INSTALL)

########################################################################

# Generate a python file that can determine swig dependencies.

# Used by the make macro above to determine extra dependencies.

# When you build C++, CMake figures out the header dependencies.

# This code essentially performs that logic for swig includes.

########################################################################

FILE(WRITE ${CMAKE_BINARY_DIR}/get_swig_deps.py "

import os, sys, re

include_matcher = re.compile('[#|%]include\\s*[<|\"](.*)[>|\"]')

include_dirs = sys.argv[2].split(';')

def get_swig_incs(file_path):

    file_contents = open(file_path, 'r').read()

    return include_matcher.findall(file_contents, re.MULTILINE)

def get_swig_deps(file_path, level):

    deps = [file_path]

    if level == 0: return deps

    for inc_file in get_swig_incs(file_path):

        for inc_dir in include_dirs:

            inc_path = os.path.join(inc_dir, inc_file)

            if not os.path.exists(inc_path): continue

            deps.extend(get_swig_deps(inc_path, level-1))

    return deps

if __name__ == '__main__':

    ifiles = sys.argv[1].split(';')

    deps = sum([get_swig_deps(ifile, 3) for ifile in ifiles], [])

    #sys.stderr.write(';'.join(set(deps)) + '\\n\\n')

    print(';'.join(set(deps)))

")