Reduce the number of copypaste in FindSphinx.cmake

cmake/FindSphinx.cmake

@@ -2,44 +2,36 @@
 # Find the Sphinx documentation generator
 #
 # This modules defines
-#  SPHINX_EXECUTABLE
-#  SPHINX_FOUND
-
-find_program(SPHINX_EXECUTABLE
-  NAMES sphinx-build
-  PATHS
-    /usr/bin
-    /usr/local/bin
-    /opt/local/bin
-  DOC "Sphinx documentation generator"
-)
+#  Sphinx_EXECUTABLE
+#  Sphinx_FOUND
+#  function Sphinx_add_target
+#  function Sphinx_add_targets
+#
 
-if( NOT SPHINX_EXECUTABLE )
-  set(_Python_VERSIONS
-    2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.6 1.5
-  )
+include(FindPackageHandleStandardArgs)
+include(CMakeParseArguments)
 
-  foreach( _version ${_Python_VERSIONS} )
-    set( _sphinx_NAMES sphinx-build-${_version} )
+set(_sphinx_names sphinx-build)
+foreach(_version 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.6 1.5)
+    list(APPEND _sphinx_names sphinx-build-${_version})
+endforeach()
 
-    find_program( SPHINX_EXECUTABLE
-      NAMES ${_sphinx_NAMES}
-      PATHS
+find_program(Sphinx_EXECUTABLE
+    NAMES ${_sphinx_names}
+    PATHS
         /usr/bin
         /usr/local/bin
-        /opt/loca/bin
-      DOC "Sphinx documentation generator"
-    )
-  endforeach()
-endif()
+        /opt/local/bin
+    DOC "Sphinx documentation generator"
+)
+mark_as_advanced(Sphinx_EXECUTABLE)
 
-include(FindPackageHandleStandardArgs)
 
-find_package_handle_standard_args(Sphinx DEFAULT_MSG
-  SPHINX_EXECUTABLE
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(Sphinx
+    FOUND_VAR Sphinx_FOUND
+    REQUIRED_VARS Sphinx_EXECUTABLE
 )
 
-
 option( SPHINX_HTML_OUTPUT "Build a single HTML with the whole content." ON )
 option( SPHINX_DIRHTML_OUTPUT "Build HTML pages, but with a single directory per document." OFF )
 option( SPHINX_HTMLHELP_OUTPUT "Build HTML pages with additional information for building a documentation collection in htmlhelp." OFF )
@@ -50,96 +42,43 @@ option( SPHINX_LATEX_OUTPUT "Build LaTeX sources that can be compiled to a PDF d
 option( SPHINX_MAN_OUTPUT "Build manual pages in groff format for UNIX systems." OFF )
 option( SPHINX_TEXT_OUTPUT "Build plain text files." OFF )
 
-
-mark_as_advanced(
-  SPHINX_EXECUTABLE
-  SPHINX_HTML_OUTPUT
-  SPHINX_DIRHTML_OUTPUT
-  SPHINX_HTMLHELP_OUTPUT
-  SPHINX_QTHELP_OUTPUT
-  SPHINX_DEVHELP_OUTPUT
-  SPHINX_EPUB_OUTPUT
-  SPHINX_LATEX_OUTPUT
-  SPHINX_MAN_OUTPUT
-  SPHINX_TEXT_OUTPUT
-)
-
-function( Sphinx_add_target target_name builder conf source destination )
-  add_custom_target( ${target_name} ALL
-    COMMAND ${SPHINX_EXECUTABLE} -b ${builder}
-    -c ${conf}
-    ${source}
-    ${destination}
-    COMMENT "Generating sphinx documentation: ${builder}"
+function(Sphinx_add_target target_name builder conf source destination)
+    add_custom_target( ${target_name} ALL
+        COMMAND ${Sphinx_EXECUTABLE} -b ${builder} -c ${conf} ${source} ${destination}
+        DEPENDS ${conf}/conf.py
+        COMMENT "Generating sphinx documentation: ${builder}"
     )
 
-  set_property(
-    DIRECTORY APPEND PROPERTY
-    ADDITIONAL_MAKE_CLEAN_FILES
-    ${destination}
+    set_property(DIRECTORY APPEND PROPERTY
+        ADDITIONAL_MAKE_CLEAN_FILES ${destination}
     )
 endfunction()
 
-# Target dependencies can be optionally listed at the end.
-function( Sphinx_add_targets target_base_name conf source base_destination )
-
-  set( _dependencies )
-
-  foreach( arg IN LISTS ARGN )
-    set( _dependencies ${_dependencies} ${arg} )
-  endforeach()
-
-  if( ${SPHINX_HTML_OUTPUT} )
-    Sphinx_add_target( ${target_base_name}_html html ${conf} ${source} ${base_destination}/html )
-
-    add_dependencies( ${target_base_name}_html ${_dependencies} )
-  endif()
-
-  if( ${SPHINX_DIRHTML_OUTPUT} )
-    Sphinx_add_target( ${target_base_name}_dirhtml dirhtml ${conf} ${source} ${base_destination}/dirhtml )
-
-    add_dependencies( ${target_base_name}_dirhtml ${_dependencies} )
-  endif()
-
-  if( ${SPHINX_QTHELP_OUTPUT} )
-    Sphinx_add_target( ${target_base_name}_qthelp qthelp ${conf} ${source} ${base_destination}/qthelp )
-
-    add_dependencies( ${target_base_name}_qthelp ${_dependencies} )
-  endif()
-
-  if( ${SPHINX_DEVHELP_OUTPUT} )
-    Sphinx_add_target( ${target_base_name}_devhelp devhelp ${conf} ${source} ${base_destination}/devhelp )
-
-    add_dependencies( ${target_base_name}_devhelp ${_dependencies} )
-  endif()
-
-  if( ${SPHINX_EPUB_OUTPUT} )
-    Sphinx_add_target( ${target_base_name}_epub epub ${conf} ${source} ${base_destination}/epub )
-
-    add_dependencies( ${target_base_name}_epub ${_dependencies} )
-  endif()
-
-  if( ${SPHINX_LATEX_OUTPUT} )
-    Sphinx_add_target( ${target_base_name}_latex latex ${conf} ${source} ${base_destination}/latex )
-
-    add_dependencies( ${target_base_name}_latex ${_dependencies} )
-  endif()
-
-  if( ${SPHINX_MAN_OUTPUT} )
-    Sphinx_add_target( ${target_base_name}_man man ${conf} ${source} ${base_destination}/man )
-
-    add_dependencies( ${target_base_name}_man ${_dependencies} )
-  endif()
-
-  if( ${SPHINX_TEXT_OUTPUT} )
-    Sphinx_add_target( ${target_base_name}_text text ${conf} ${source} ${base_destination}/text )
-
-    add_dependencies( ${target_base_name}_text ${_dependencies} )
-  endif()
-
-  if( ${BUILD_TESTING} )
-    sphinx_add_target( ${target_base_name}_linkcheck linkcheck ${conf} ${source} ${base_destination}/linkcheck )
-
-    add_dependencies( ${target_base_name}_linkcheck ${_dependencies} )
-  endif()
+# Usage:
+#
+# Sphinx_add_targets(NAME <base_targets_name>
+#   SRC_DIR <path_to_doc>/
+#   DST_DIR <path_to_output_result>/
+#   CONFIG_DIR <path_to_conf.py>/
+#   [DEPENDENCIES dep1 dep2 dep3 ...]
+# )
+function(Sphinx_add_targets)
+    set(options )
+    set(one_value_keywords NAME SRC_DIR DST_DIR CONFIG_DIR)
+    set(multi_value_keywords DEPENDENCIES)
+    CMAKE_PARSE_ARGUMENTS(OPT "${options}" "${one_value_keywords}" "${multi_value_keywords}" ${ARGN})
+
+    if (NOT OPT_NAME OR NOT OPT_SRC_DIR OR NOT OPT_DST_DIR OR NOT OPT_CONFIG_DIR)
+        message(FATAL_ERROR "Arguments NAME, SRC_DIR, DST_DIR, CONFIG_DIR are required!")
+    endif()
+
+    foreach(_generator html dirhtml qthelp devhelp epub latex man text linkcheck)
+        string(TOUPPER ${_generator} _generator_uc)
+        if (SPHINX_${_generator_uc}_OUTPUT)
+            Sphinx_add_target(${OPT_NAME}_${_generator} ${_generator} ${OPT_CONFIG_DIR} ${OPT_SRC_DIR} ${OPT_DST_DIR}/${_generator}/)
+            if (OPT_DEPENDENCIES)
+                add_dependencies(${OPT_NAME}_${_generator} ${OPT_DEPENDENCIES})
+            endif()
+        endif()
+    endforeach()
 endfunction()