560 lines
18 KiB
Python
560 lines
18 KiB
Python
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#!/usr/bin/env python3
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# Simple DirectMedia Layer
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# Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
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#
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# This software is provided 'as-is', without any express or implied
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# warranty. In no event will the authors be held liable for any damages
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# arising from the use of this software.
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#
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# Permission is granted to anyone to use this software for any purpose,
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# including commercial applications, and to alter it and redistribute it
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# freely, subject to the following restrictions:
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#
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# 1. The origin of this software must not be misrepresented; you must not
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# claim that you wrote the original software. If you use this software
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# in a product, an acknowledgment in the product documentation would be
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# appreciated but is not required.
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# 2. Altered source versions must be plainly marked as such, and must not be
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# misrepresented as being the original software.
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# 3. This notice may not be removed or altered from any source distribution.
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# WHAT IS THIS?
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# When you add a public API to SDL, please run this script, make sure the
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# output looks sane (git diff, it adds to existing files), and commit it.
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# It keeps the dynamic API jump table operating correctly.
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#
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# OS-specific API:
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# After running the script, you have to manually add #ifdef __WIN32__
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# or similar around the function in 'SDL_dynapi_procs.h'
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#
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import argparse
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import json
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import os
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import pathlib
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import pprint
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import re
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SDL_ROOT = pathlib.Path(__file__).resolve().parents[2]
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SDL_INCLUDE_DIR = SDL_ROOT / "include/SDL3"
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SDL_DYNAPI_PROCS_H = SDL_ROOT / "src/dynapi/SDL_dynapi_procs.h"
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SDL_DYNAPI_OVERRIDES_H = SDL_ROOT / "src/dynapi/SDL_dynapi_overrides.h"
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SDL_DYNAPI_SYM = SDL_ROOT / "src/dynapi/SDL_dynapi.sym"
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full_API = []
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def main():
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# Parse 'sdl_dynapi_procs_h' file to find existing functions
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existing_procs = find_existing_procs()
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# Get list of SDL headers
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sdl_list_includes = get_header_list()
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reg_externC = re.compile('.*extern[ "]*C[ "].*')
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reg_comment_remove_content = re.compile('\/\*.*\*/')
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reg_parsing_function = re.compile('(.*SDLCALL[^\(\)]*) ([a-zA-Z0-9_]+) *\((.*)\) *;.*')
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#eg:
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# void (SDLCALL *callback)(void*, int)
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# \1(\2)\3
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reg_parsing_callback = re.compile('([^\(\)]*)\(([^\(\)]+)\)(.*)')
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for filename in sdl_list_includes:
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if args.debug:
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print("Parse header: %s" % filename)
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input = open(filename)
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parsing_function = False
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current_func = ""
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parsing_comment = False
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current_comment = ""
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for line in input:
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# Discard pre-processor directives ^#.*
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if line.startswith("#"):
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continue
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# Discard "extern C" line
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match = reg_externC.match(line)
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if match:
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continue
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# Remove one line comment /* ... */
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# eg: extern DECLSPEC SDL_hid_device * SDLCALL SDL_hid_open_path(const char *path, int bExclusive /* = false */);
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line = reg_comment_remove_content.sub('', line)
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# Get the comment block /* ... */ across several lines
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match_start = "/*" in line
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match_end = "*/" in line
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if match_start and match_end:
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continue
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if match_start:
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parsing_comment = True
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current_comment = line
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continue
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if match_end:
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parsing_comment = False
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current_comment += line
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continue
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if parsing_comment:
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current_comment += line
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continue
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# Get the function prototype across several lines
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if parsing_function:
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# Append to the current function
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current_func += " "
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current_func += line.strip()
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else:
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# if is contains "extern", start grabbing
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if "extern" not in line:
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continue
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# Start grabbing the new function
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current_func = line.strip()
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parsing_function = True;
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# If it contains ';', then the function is complete
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if ";" not in current_func:
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continue
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# Got function/comment, reset vars
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parsing_function = False;
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func = current_func
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comment = current_comment
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current_func = ""
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current_comment = ""
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# Discard if it doesn't contain 'SDLCALL'
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if "SDLCALL" not in func:
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if args.debug:
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print(" Discard: " + func)
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continue
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if args.debug:
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print(" Raw data: " + func);
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# Replace unusual stuff...
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func = func.replace(" SDL_PRINTF_VARARG_FUNC(1)", "");
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func = func.replace(" SDL_PRINTF_VARARG_FUNC(2)", "");
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func = func.replace(" SDL_PRINTF_VARARG_FUNC(3)", "");
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func = func.replace(" SDL_WPRINTF_VARARG_FUNC(3)", "");
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func = func.replace(" SDL_SCANF_VARARG_FUNC(2)", "");
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func = func.replace(" __attribute__((analyzer_noreturn))", "");
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func = func.replace(" SDL_MALLOC", "");
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func = func.replace(" SDL_ALLOC_SIZE2(1, 2)", "");
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func = func.replace(" SDL_ALLOC_SIZE(2)", "");
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func = re.sub(" SDL_ACQUIRE\(.*\)", "", func);
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func = re.sub(" SDL_ACQUIRE_SHARED\(.*\)", "", func);
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func = re.sub(" SDL_TRY_ACQUIRE\(.*\)", "", func);
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func = re.sub(" SDL_TRY_ACQUIRE_SHARED\(.*\)", "", func);
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func = re.sub(" SDL_RELEASE\(.*\)", "", func);
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func = re.sub(" SDL_RELEASE_SHARED\(.*\)", "", func);
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# Should be a valid function here
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match = reg_parsing_function.match(func)
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if not match:
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print("Cannot parse: "+ func)
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exit(-1)
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func_ret = match.group(1)
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func_name = match.group(2)
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func_params = match.group(3)
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#
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# Parse return value
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#
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func_ret = func_ret.replace('extern', ' ')
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func_ret = func_ret.replace('SDLCALL', ' ')
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func_ret = func_ret.replace('DECLSPEC', ' ')
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# Remove trailing spaces in front of '*'
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tmp = ""
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while func_ret != tmp:
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tmp = func_ret
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func_ret = func_ret.replace(' ', ' ')
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func_ret = func_ret.replace(' *', '*')
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func_ret = func_ret.strip()
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#
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# Parse parameters
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#
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func_params = func_params.strip()
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if func_params == "":
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func_params = "void"
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# Identify each function parameters with type and name
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# (eventually there are callbacks of several parameters)
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tmp = func_params.split(',')
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tmp2 = []
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param = ""
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for t in tmp:
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if param == "":
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param = t
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else:
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param = param + "," + t
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# Identify a callback or parameter when there is same count of '(' and ')'
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if param.count('(') == param.count(')'):
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tmp2.append(param.strip())
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param = ""
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# Process each parameters, separation name and type
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func_param_type = []
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func_param_name = []
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for t in tmp2:
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if t == "void":
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func_param_type.append(t)
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func_param_name.append("")
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continue
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if t == "...":
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func_param_type.append(t)
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func_param_name.append("")
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continue
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param_name = ""
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# parameter is a callback
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if '(' in t:
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match = reg_parsing_callback.match(t)
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if not match:
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print("cannot parse callback: " + t);
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exit(-1)
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a = match.group(1).strip()
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b = match.group(2).strip()
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c = match.group(3).strip()
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try:
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(param_type, param_name) = b.rsplit('*', 1)
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except:
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param_type = t;
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param_name = "param_name_not_specified"
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# bug rsplit ??
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if param_name == "":
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param_name = "param_name_not_specified"
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# reconstruct a callback name for future parsing
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func_param_type.append(a + " (" + param_type.strip() + " *REWRITE_NAME)" + c)
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func_param_name.append(param_name.strip())
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continue
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# array like "char *buf[]"
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has_array = False
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if t.endswith("[]"):
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t = t.replace("[]", "")
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has_array = True
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# pointer
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if '*' in t:
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try:
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(param_type, param_name) = t.rsplit('*', 1)
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except:
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param_type = t;
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param_name = "param_name_not_specified"
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# bug rsplit ??
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if param_name == "":
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param_name = "param_name_not_specified"
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val = param_type.strip() + "*REWRITE_NAME"
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# Remove trailing spaces in front of '*'
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tmp = ""
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while val != tmp:
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tmp = val
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val = val.replace(' ', ' ')
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val = val.replace(' *', '*')
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# first occurrence
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val = val.replace('*', ' *', 1)
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val = val.strip()
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else: # non pointer
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# cut-off last word on
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try:
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(param_type, param_name) = t.rsplit(' ', 1)
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except:
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param_type = t;
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param_name = "param_name_not_specified"
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val = param_type.strip() + " REWRITE_NAME"
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# set back array
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if has_array:
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val += "[]"
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func_param_type.append(val)
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func_param_name.append(param_name.strip())
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new_proc = {}
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# Return value type
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new_proc['retval'] = func_ret
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# List of parameters (type + anonymized param name 'REWRITE_NAME')
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new_proc['parameter'] = func_param_type
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# Real parameter name, or 'param_name_not_specified'
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new_proc['parameter_name'] = func_param_name
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# Function name
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new_proc['name'] = func_name
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# Header file
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new_proc['header'] = os.path.basename(filename)
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# Function comment
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new_proc['comment'] = comment
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full_API.append(new_proc)
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if args.debug:
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pprint.pprint(new_proc);
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print("\n")
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if func_name not in existing_procs:
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print("NEW " + func)
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add_dyn_api(new_proc)
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# For-End line in input
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input.close()
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# For-End parsing all files of sdl_list_includes
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# Dump API into a json file
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full_API_json()
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# Check comment formatting
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check_comment();
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# Dump API into a json file
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def full_API_json():
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if args.dump:
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filename = 'sdl.json'
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with open(filename, 'w') as f:
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json.dump(full_API, f, indent=4, sort_keys=True)
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print("dump API to '%s'" % filename);
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# Check public function comments are correct
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def check_comment_header():
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if not check_comment_header.done:
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check_comment_header.done = True
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print("")
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print("Please fix following warning(s):")
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print("-------------------------------")
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def check_comment():
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check_comment_header.done = False
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# Check \param
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for i in full_API:
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comment = i['comment']
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name = i['name']
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retval = i['retval']
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header = i['header']
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expected = len(i['parameter'])
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if expected == 1:
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if i['parameter'][0] == 'void':
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expected = 0;
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count = comment.count("\\param")
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if count != expected:
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# skip SDL_stdinc.h
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if header != 'SDL_stdinc.h':
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# Warning mismatch \param and function prototype
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check_comment_header()
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print(" In file %s: function %s() has %d '\\param' but expected %d" % (header, name, count, expected));
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# Warning check \param uses the correct parameter name
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# skip SDL_stdinc.h
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if header != 'SDL_stdinc.h':
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parameter_name = i['parameter_name']
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for n in parameter_name:
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if n != "" and "\\param " + n not in comment:
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check_comment_header()
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print(" In file %s: function %s() missing '\\param %s'" % (header, name, n));
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# Check \returns
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for i in full_API:
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comment = i['comment']
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name = i['name']
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retval = i['retval']
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header = i['header']
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expected = 1
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if retval == 'void':
|
||
|
|
expected = 0;
|
||
|
|
|
||
|
|
count = comment.count("\\returns")
|
||
|
|
if count != expected:
|
||
|
|
# skip SDL_stdinc.h
|
||
|
|
if header != 'SDL_stdinc.h':
|
||
|
|
# Warning mismatch \param and function prototype
|
||
|
|
check_comment_header()
|
||
|
|
print(" In file %s: function %s() has %d '\\returns' but expected %d" % (header, name, count, expected));
|
||
|
|
|
||
|
|
# Check \since
|
||
|
|
for i in full_API:
|
||
|
|
comment = i['comment']
|
||
|
|
name = i['name']
|
||
|
|
retval = i['retval']
|
||
|
|
header = i['header']
|
||
|
|
|
||
|
|
expected = 1
|
||
|
|
count = comment.count("\\since")
|
||
|
|
if count != expected:
|
||
|
|
# skip SDL_stdinc.h
|
||
|
|
if header != 'SDL_stdinc.h':
|
||
|
|
# Warning mismatch \param and function prototype
|
||
|
|
check_comment_header()
|
||
|
|
print(" In file %s: function %s() has %d '\\since' but expected %d" % (header, name, count, expected));
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
# Parse 'sdl_dynapi_procs_h' file to find existing functions
|
||
|
|
def find_existing_procs():
|
||
|
|
reg = re.compile('SDL_DYNAPI_PROC\([^,]*,([^,]*),.*\)')
|
||
|
|
ret = []
|
||
|
|
input = open(SDL_DYNAPI_PROCS_H)
|
||
|
|
|
||
|
|
for line in input:
|
||
|
|
match = reg.match(line)
|
||
|
|
if not match:
|
||
|
|
continue
|
||
|
|
existing_func = match.group(1)
|
||
|
|
ret.append(existing_func);
|
||
|
|
# print(existing_func)
|
||
|
|
input.close()
|
||
|
|
|
||
|
|
return ret
|
||
|
|
|
||
|
|
# Get list of SDL headers
|
||
|
|
def get_header_list():
|
||
|
|
reg = re.compile('^.*\.h$')
|
||
|
|
ret = []
|
||
|
|
tmp = os.listdir(SDL_INCLUDE_DIR)
|
||
|
|
|
||
|
|
for f in tmp:
|
||
|
|
# Only *.h files
|
||
|
|
match = reg.match(f)
|
||
|
|
if not match:
|
||
|
|
if args.debug:
|
||
|
|
print("Skip %s" % f)
|
||
|
|
continue
|
||
|
|
ret.append(SDL_INCLUDE_DIR / f)
|
||
|
|
|
||
|
|
return ret
|
||
|
|
|
||
|
|
# Write the new API in files: _procs.h _overrivides.h and .sym
|
||
|
|
def add_dyn_api(proc):
|
||
|
|
func_name = proc['name']
|
||
|
|
func_ret = proc['retval']
|
||
|
|
func_argtype = proc['parameter']
|
||
|
|
|
||
|
|
|
||
|
|
# File: SDL_dynapi_procs.h
|
||
|
|
#
|
||
|
|
# Add at last
|
||
|
|
# SDL_DYNAPI_PROC(SDL_EGLConfig,SDL_EGL_GetCurrentEGLConfig,(void),(),return)
|
||
|
|
f = open(SDL_DYNAPI_PROCS_H, "a")
|
||
|
|
dyn_proc = "SDL_DYNAPI_PROC(" + func_ret + "," + func_name + ",("
|
||
|
|
|
||
|
|
i = ord('a')
|
||
|
|
remove_last = False
|
||
|
|
for argtype in func_argtype:
|
||
|
|
|
||
|
|
# Special case, void has no parameter name
|
||
|
|
if argtype == "void":
|
||
|
|
dyn_proc += "void"
|
||
|
|
continue
|
||
|
|
|
||
|
|
# Var name: a, b, c, ...
|
||
|
|
varname = chr(i)
|
||
|
|
i += 1
|
||
|
|
|
||
|
|
tmp = argtype.replace("REWRITE_NAME", varname)
|
||
|
|
dyn_proc += tmp + ", "
|
||
|
|
remove_last = True
|
||
|
|
|
||
|
|
# remove last 2 char ', '
|
||
|
|
if remove_last:
|
||
|
|
dyn_proc = dyn_proc[:-1]
|
||
|
|
dyn_proc = dyn_proc[:-1]
|
||
|
|
|
||
|
|
dyn_proc += "),("
|
||
|
|
|
||
|
|
i = ord('a')
|
||
|
|
remove_last = False
|
||
|
|
for argtype in func_argtype:
|
||
|
|
|
||
|
|
# Special case, void has no parameter name
|
||
|
|
if argtype == "void":
|
||
|
|
continue
|
||
|
|
|
||
|
|
# Special case, '...' has no parameter name
|
||
|
|
if argtype == "...":
|
||
|
|
continue
|
||
|
|
|
||
|
|
# Var name: a, b, c, ...
|
||
|
|
varname = chr(i)
|
||
|
|
i += 1
|
||
|
|
|
||
|
|
dyn_proc += varname + ","
|
||
|
|
remove_last = True
|
||
|
|
|
||
|
|
# remove last char ','
|
||
|
|
if remove_last:
|
||
|
|
dyn_proc = dyn_proc[:-1]
|
||
|
|
|
||
|
|
dyn_proc += "),"
|
||
|
|
|
||
|
|
if func_ret != "void":
|
||
|
|
dyn_proc += "return"
|
||
|
|
dyn_proc += ")"
|
||
|
|
f.write(dyn_proc + "\n")
|
||
|
|
f.close()
|
||
|
|
|
||
|
|
# File: SDL_dynapi_overrides.h
|
||
|
|
#
|
||
|
|
# Add at last
|
||
|
|
# "#define SDL_DelayNS SDL_DelayNS_REAL
|
||
|
|
f = open(SDL_DYNAPI_OVERRIDES_H, "a")
|
||
|
|
f.write("#define " + func_name + " " + func_name + "_REAL\n")
|
||
|
|
f.close()
|
||
|
|
|
||
|
|
# File: SDL_dynapi.sym
|
||
|
|
#
|
||
|
|
# Add before "extra symbols go here" line
|
||
|
|
input = open(SDL_DYNAPI_SYM)
|
||
|
|
new_input = []
|
||
|
|
for line in input:
|
||
|
|
if "extra symbols go here" in line:
|
||
|
|
new_input.append(" " + func_name + ";\n")
|
||
|
|
new_input.append(line)
|
||
|
|
input.close()
|
||
|
|
f = open(SDL_DYNAPI_SYM, 'w')
|
||
|
|
for line in new_input:
|
||
|
|
f.write(line)
|
||
|
|
f.close()
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
|
||
|
|
parser = argparse.ArgumentParser()
|
||
|
|
parser.add_argument('--dump', help='output all SDL API into a .json file', action='store_true')
|
||
|
|
parser.add_argument('--debug', help='add debug traces', action='store_true')
|
||
|
|
args = parser.parse_args()
|
||
|
|
|
||
|
|
try:
|
||
|
|
main()
|
||
|
|
except Exception as e:
|
||
|
|
print(e)
|
||
|
|
exit(-1)
|
||
|
|
|
||
|
|
print("done!")
|
||
|
|
exit(0)
|
||
|
|
|