From 9ab3b89c53aa0153111398b08f880f68bb7e497d Mon Sep 17 00:00:00 2001
From: Alexander Mordvintsev <zzznah@gmail.com>
Date: Sun, 27 Jul 2014 16:35:35 +0400
Subject: [PATCH] pass header list to gen2.py by a text file (avoid command
 line length limit on windows)

---
 modules/python/CMakeLists.txt | 36 +++++++++++++----------------------
 modules/python/src2/gen2.py   |  3 +--
 2 files changed, 14 insertions(+), 25 deletions(-)

diff --git a/modules/python/CMakeLists.txt b/modules/python/CMakeLists.txt
index cccf0c3915..57a8ed7b4f 100644
--- a/modules/python/CMakeLists.txt
+++ b/modules/python/CMakeLists.txt
@@ -12,18 +12,17 @@ endif()
 
 set(the_description "The python bindings")
 
-set(candidate_deps)
+set(candidate_deps "")
 foreach(mp ${OPENCV_MODULES_PATH} ${OPENCV_EXTRA_MODULES_PATH})
     file(GLOB names "${mp}/*")
     foreach(m IN LISTS names)
         if(IS_DIRECTORY ${m})
             get_filename_component(m ${m} NAME)
-            if (NOT ${m} MATCHES "^cud(a|ev)")
-                list(APPEND candidate_deps "opencv_${m}")
-            endif()
+            list(APPEND candidate_deps "opencv_${m}")
         endif()
     endforeach(m)
 endforeach(mp)
+ocv_list_filterout(candidate_deps "^opencv_cud(a|ev)")
 
 ocv_add_module(python BINDINGS OPTIONAL ${candidate_deps})
 
@@ -34,27 +33,16 @@ ocv_module_include_directories(
     )
 
 
-set(opencv_hdrs_blacklist
-    ".h$"
-    "opencv2/core/cuda"
-    "opencv2/objdetect/detection_based_tracker.hpp"
-    "opencv2/optim.hpp")
-
-set(opencv_hdrs)
+set(opencv_hdrs "")
 foreach(m IN LISTS OPENCV_MODULE_opencv_python_DEPS)
-    foreach(hdr IN LISTS OPENCV_MODULE_${m}_HEADERS)
-        set(good TRUE)
-        foreach(s IN LISTS opencv_hdrs_blacklist)
-            if (${hdr} MATCHES ${s})
-                set(good FALSE)
-            endif()
-        endforeach(s)
-        if(${good})
-            list(APPEND opencv_hdrs ${hdr})
-        endif()
-    endforeach(hdr)
+    list(APPEND opencv_hdrs ${OPENCV_MODULE_${m}_HEADERS})
 endforeach(m)
 
+ocv_list_filterout(opencv_hdrs ".h$")
+ocv_list_filterout(opencv_hdrs "opencv2/core/cuda")
+ocv_list_filterout(opencv_hdrs "opencv2/objdetect/detection_based_tracker.hpp")
+ocv_list_filterout(opencv_hdrs "opencv2/optim.hpp")
+
 set(cv2_generated_hdrs
     "${CMAKE_CURRENT_BINARY_DIR}/pyopencv_generated_include.h"
     "${CMAKE_CURRENT_BINARY_DIR}/pyopencv_generated_funcs.h"
@@ -63,11 +51,13 @@ set(cv2_generated_hdrs
     "${CMAKE_CURRENT_BINARY_DIR}/pyopencv_generated_type_reg.h"
     "${CMAKE_CURRENT_BINARY_DIR}/pyopencv_generated_const_reg.h")
 
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/headers.txt" "${opencv_hdrs}")
 add_custom_command(
    OUTPUT ${cv2_generated_hdrs}
-   COMMAND ${PYTHON_EXECUTABLE} "${CMAKE_CURRENT_SOURCE_DIR}/src2/gen2.py" ${CMAKE_CURRENT_BINARY_DIR} ${opencv_hdrs}
+   COMMAND ${PYTHON_EXECUTABLE} "${CMAKE_CURRENT_SOURCE_DIR}/src2/gen2.py" ${CMAKE_CURRENT_BINARY_DIR} "${CMAKE_CURRENT_BINARY_DIR}/headers.txt"
    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/src2/gen2.py
    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/src2/hdr_parser.py
+   DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/headers.txt
    DEPENDS ${opencv_hdrs})
 
 add_library(${the_module} SHARED src2/cv2.cpp ${cv2_generated_hdrs})
diff --git a/modules/python/src2/gen2.py b/modules/python/src2/gen2.py
index 9488107715..684b80f4e8 100755
--- a/modules/python/src2/gen2.py
+++ b/modules/python/src2/gen2.py
@@ -831,7 +831,6 @@ class PythonWrapperGenerator(object):
 
         # step 1: scan the headers and build more descriptive maps of classes, consts, functions
         for hdr in srcfiles:
-            print(hdr)
             decls = parser.parse(hdr)
             if len(decls) == 0:
                 continue
@@ -904,6 +903,6 @@ if __name__ == "__main__":
     if len(sys.argv) > 1:
         dstdir = sys.argv[1]
     if len(sys.argv) > 2:
-        srcfiles = sys.argv[2:]
+        srcfiles = open(sys.argv[2], 'r').read().split(';')
     generator = PythonWrapperGenerator()
     generator.gen(srcfiles, dstdir)