#!/usr/bin/env python3

# This is in its own file rather than inside meson.build

# because a) mixing the two is ugly and b) trying to

# make special characters such as \n go through all

# backends is a fool's errand.

import sys, os, shutil, subprocess

h_array = ['--fhead',

           "#ifndef __GST_VIDEO_ENUM_TYPES_H__\n#define __GST_VIDEO_ENUM_TYPES_H__\n\n#include <gst/gst.h>\n#include <gst/video/video-prelude.h>\nG_BEGIN_DECLS\n",

           '--fprod',

           "\n/* enumerations from \"@filename@\" */\n",

           '--vhead',

           "GST_VIDEO_API GType @enum_name@_get_type (void);\n#define GST_TYPE_@ENUMSHORT@ (@enum_name@_get_type())\n",

           '--ftail',

           "G_END_DECLS\n\n#endif /* __GST_VIDEO_ENUM_TYPES_H__ */"

]

c_array = ['--fhead',

           "#include \"video-enumtypes.h\"\n\n#include \"video.h\" \n#include \"video-format.h\" \n#include \"video-color.h\" \n#include \"video-info.h\" \n#include \"colorbalance.h\" \n#include \"navigation.h\" \n#include \"video-chroma.h\" \n#include \"video-tile.h\"",

           '--fprod',

           "\n/* enumerations from \"@filename@\" */",

           '--vhead',

           "GType\n@enum_name@_get_type (void)\n{\n  static volatile gsize g_define_type_id__volatile = 0;\n  if (g_once_init_enter (&g_define_type_id__volatile)) {\n    static const G@Type@Value values[] = {",

           '--vprod',

           "      { @VALUENAME@, \"@VALUENAME@\", \"@valuenick@\" },",

           '--vtail',

           "      { 0, NULL, NULL }\n    };\n    GType g_define_type_id = g_@type@_register_static (\"@EnumName@\", values);\n    g_once_init_leave (&g_define_type_id__volatile, g_define_type_id);\n  }\n  return g_define_type_id__volatile;\n}\n"

]

cmd = []

argn = 1

# Find the full command needed to run glib-mkenums

# On UNIX-like, this is just the full path to glib-mkenums

# On Windows, this is the full path to interpreter + full path to glib-mkenums

for arg in sys.argv[1:]:

    cmd.append(arg)

    argn += 1

    if arg.endswith('glib-mkenums'):

        break

ofilename = sys.argv[argn]

headers = sys.argv[argn + 1:]

if ofilename.endswith('.h'):

    arg_array = h_array

else:

    arg_array = c_array

cmd_array = cmd + arg_array + headers

pc = subprocess.Popen(cmd_array, stdout=subprocess.PIPE)

(stdo, _) = pc.communicate()

if pc.returncode != 0:

    sys.exit(pc.returncode)

open(ofilename, 'wb').write(stdo)