Convert cl2cpp.py script to cmake

New version removes inner comments and empty lines

modules/ocl/CMakeLists.txt

@@ -10,20 +10,12 @@ ocv_module_include_directories()
 
 file(GLOB CL_FILES "${CMAKE_CURRENT_SOURCE_DIR}/src/kernels/*.cl")
 set(kernels_cpp "${CMAKE_CURRENT_BINARY_DIR}/kernels.cpp")
-set(cl2cpp_script "${CMAKE_CURRENT_SOURCE_DIR}/cl2cpp.py")
-set(cl2cpp_script_W32 "${CMAKE_CURRENT_SOURCE_DIR}/cl2cpp.js")
+set(cl2cpp_script "${CMAKE_CURRENT_SOURCE_DIR}/cl2cpp.cmake")
 
-IF(0)
-   add_custom_command(
-   OUTPUT ${kernels_cpp}
-   COMMAND wscript.exe ${cl2cpp_script_W32} "${CMAKE_CURRENT_SOURCE_DIR}/src/kernels" ${kernels_cpp}
-   DEPENDS ${CL_FILES} ${cl2cpp_script_W32})
-else()
-   add_custom_command(
-   OUTPUT ${kernels_cpp}
-   COMMAND ${PYTHON_EXECUTABLE} ${cl2cpp_script} "${CMAKE_CURRENT_SOURCE_DIR}/src/kernels" ${kernels_cpp}
-   DEPENDS ${CL_FILES} ${cl2cpp_script})
-ENDIF()
+add_custom_command(
+  OUTPUT ${kernels_cpp}
+  COMMAND ${CMAKE_COMMAND} -DCL_DIR="${CMAKE_CURRENT_SOURCE_DIR}/src/kernels" -DOUTPUT="${kernels_cpp}" -P ${cl2cpp_script}
+  DEPENDS ${CL_FILES} ${cl2cpp_script})
 
 file(GLOB lib_hdrs     "include/opencv2/${name}/*.hpp" "include/opencv2/${name}/*.h")
 file(GLOB lib_srcs     "src/*.cpp")

modules/ocl/cl2cpp.cmake

+file(GLOB cl_list "${CL_DIR}/*.cl" )
+
+file(WRITE ${OUTPUT} "// This file is auto-generated. Do not edit!
+
+namespace cv
+{
+namespace ocl
+{
+")
+
+foreach(cl ${cl_list})
+  get_filename_component(cl_filename "${cl}" NAME_WE)
+  #message("${cl_filename}")
+
+  file(READ "${cl}" lines)
+
+  string(REPLACE "\r" "" lines "${lines}\n")
+  string(REPLACE "\t" "  " lines "${lines}")
+
+  string(REGEX REPLACE "/\\*([^*]/|\\*[^/]|[^*/])*\\*/" ""   lines "${lines}") # multiline comments
+  string(REGEX REPLACE "[ ]*//[^\n]*\n"                 "\n" lines "${lines}") # single-line comments
+  string(REGEX REPLACE "\n[ ]*(\n[ ]*)*"                "\n" lines "${lines}") # empty lines & leading whitespace
+  string(REGEX REPLACE "^\n"                            ""   lines "${lines}") # leading new line
+
+  string(REPLACE "\\" "\\\\" lines "${lines}")
+  string(REPLACE "\"" "\\\"" lines "${lines}")
+  string(REPLACE "\n" "\\n\"\n\"" lines "${lines}")
+
+  string(REGEX REPLACE "\"$" "" lines "${lines}") # unneeded " at the eof
+
+  file(APPEND ${OUTPUT} "const char* ${cl_filename}=\"${lines};\n")
+endforeach()
+
+file(APPEND ${OUTPUT} "}\n}\n")
\ No newline at end of file

modules/ocl/cl2cpp.js

-var fso = new ActiveXObject("Scripting.FileSystemObject"), shell = new ActiveXObject("WScript.Shell"), args = WScript.Arguments, indir = args[0], outname = args[1], outDir, scriptFullPath = WScript.ScriptFullName;
-function getDir(a) {
-	return a.substring(0, a.lastIndexOf("\\") || a.lastIndexOf("/"))
-}
-if (!indir || !outname) {
-	var scriptPath = getDir(WScript.ScriptFullName.toString()),
-	indir = indir || scriptPath + "/src/kernels";
-	outname || (outname = scriptPath + "/kernels.cpp", outDir = scriptPath)
-} else {
-	outDir = getDir(outname);
-	try {
-		fso.CreateFolder(outDir)
-	} catch (err) {}
-	
-}
-var infldr = fso.GetFolder(indir), clrx = /([\w-]+)\.cl$/i, stripBeginningRx = /^(\s)+/i, stripSinglelineMstyle = /\/\*.*?\*\//ig, outStream = fso.OpenTextFile(outname, 2, !0, -2);
-outStream.write("// This file is auto-generated. Do not edit!\n\nnamespace cv{\n\tnamespace ocl{\n");
-for (var res, cl_file, l, state, countFiles = 0, codeRows = 0, removedRows = 0, filei = new Enumerator(infldr.Files); !filei.atEnd(); filei.moveNext())
-	if (cl_file = filei.item(), res = cl_file.Name.match(clrx)) {
-		var cl_filename = res[1],
-		inStream = cl_file.OpenAsTextStream(1);
-		outStream.writeLine("\t\tconst char* " + cl_filename + "=");
-		state = 0;
-		for (countFiles++; !inStream.AtEndOfStream; ) {
-			l = inStream.readLine();
-			stripSinglelineMstyle.lastIndex = 0;
-			l = l.replace(stripSinglelineMstyle, "");
-			var mline = l.indexOf("/*");
-			0 <= mline ? (l = l.substr(0, mline),
-				state = 1) : (mline = l.indexOf("*/"), 0 <= mline && (l = l.substr(mline + 2), state = 0));
-			var slineBegin = l.indexOf("//");
-			0 <= slineBegin && (l = l.substr(0, slineBegin));
-			1 == state || !l ? removedRows++ : (l = l.replace(stripBeginningRx, "$1"), l = l.replace("\\", "\\\\"), l = l.replace("\r", ""), l = l.replace('"', '\\"'), l = l.replace("\t", "  "), codeRows++, outStream.writeLine('\t\t\t"' + l + '\\n"'))
-		}
-		outStream.writeLine("\t\t;");
-		inStream.close()
-	}
-outStream.writeLine("\t\t}\n\t}");
-outStream.close();
-shell.Popup("Merging OpenCL Kernels into cpp file has been FINISHED!\nFiles : " + countFiles + "\nCode rows : " + codeRows + "\nRemoved rows : " + removedRows, 1, "OpenCL Kernels to cpp file", 64);

modules/ocl/cl2cpp.py

-import os, os.path, sys, glob
-
-indir = sys.argv[1]
-outname = sys.argv[2]
-#indir = "/Users/vp/work/ocv/opencv/modules/ocl/src/kernels"
-#outname = "/Users/vp/work/ocv.build/xcode/modules/ocl/kernels.cpp"
-
-try:
-    os.mkdir(os.path.dirname(outname))
-except OSError:
-    pass
-
-cl_list = glob.glob(os.path.join(indir, "*.cl"))
-kfile = open(outname, "wt")
-
-kfile.write("""// This file is auto-generated. Do not edit!
-
-namespace cv
-{
-namespace ocl
-{
-""")
-
-for cl in cl_list:
-    cl_file = open(cl, "rt")
-    cl_filename = os.path.basename(cl)
-    cl_filename = cl_filename[:cl_filename.rfind(".")]
-    kfile.write("const char* %s=" % cl_filename)
-    state = 0
-
-    for cl_line in cl_file.readlines():
-        l = cl_line.strip()
-        # skip the leading comments
-        if l.startswith("//") and l.find("*/") < 0:
-            if state == 0:
-                state = 1
-        else:
-            if state == 1 or l.find("*/") >= 0:
-                state = 2
-
-        if state == 1:
-            continue
-
-        l = l.replace("\\", "\\\\")
-        l = l.replace("\r", "")
-        l = l.replace("\"", "\\\"")
-        l = l.replace("\t", "  ")
-        kfile.write("\"%s\\n\"\n" % l)
-    kfile.write(";\n")
-    cl_file.close()
-
-kfile.write("""}
-}
-""")
-kfile.close()