deep-c-rsc/JCGO/miscsrc/winmain/winmain.c

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2021-07-16 18:12:20 -04:00
/*
* @(#) winmain.c - Windows "WinMain" wrapper for C "main" entry.
* Copyright (C) 2007-2009 Ivan Maidanski <ivmai@mail.ru> All rights reserved.
**
* Version: 1.4
* Required: any ANSI C compiler for Windows (Win32, Win64, WinCE).
*/
/*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
**
* This software is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License (GPL) for more details.
**
* Linking this library statically or dynamically with other modules is
* making a combined work based on this library. Thus, the terms and
* conditions of the GNU General Public License cover the whole
* combination.
**
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent
* modules, and to copy and distribute the resulting executable under
* terms of your choice, provided that you also meet, for each linked
* independent module, the terms and conditions of the license of that
* module. An independent module is a module which is not derived from
* or based on this library. If you modify this library, you may extend
* this exception to your version of the library, but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
/*
* Tested with:
* Borland BCC32 (-w-par -tW),
* MsDev CL (/link /subsystem:windows),
* MsDev CL with MSVCRT (-MD -DWINMAIN_MSVCRT /link /subsystem:windows),
* MsDev WinCE CL (-DWINMAIN_PARSECMDLINE -DWINMAIN_EMPTYENV -DUNDER_CE),
* mingw32ce (-DWINMAIN_PARSECMDLINE -DWINMAIN_EMPTYENV -DWINMAIN_NOSTOREARGV).
*/
/*
* Control macros:
* UNDER_CE, WINMAIN_CALLEXIT, WINMAIN_EMPTYENV, WINMAIN_MSVCRT,
* WINMAIN_NOGLOB, WINMAIN_NOSTOREARGV, WINMAIN_PARSECMDLINE,
* WINMAIN_SETLOCALE, WINMAIN_TWOARGS, WINMAIN_USECRTGLOB, WINMAIN_WCHAR;
* WINMAIN_CLIBDECL, WINMAIN_CONST, WINMAIN_FREE, WINMAIN_INIT,
* WINMAIN_MALLOC, WINMAIN_STATIC.
*/
#ifndef _STDLIB_H
#include <stdlib.h>
/* void exit(int); */
/* void free(void *); */
/* void *malloc(size_t); */
/* int __argc; */
/* char **__argv; */
/* wchar_t **__wargv; */
/* char **_environ; */
/* wchar_t **_wenviron; */
#endif
#ifndef WINMAIN_NOGLOB
#ifndef _STRING_H
#include <string.h>
/* void *memcpy(void *, const void *, size_t); */
#endif
#endif
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif
#ifndef _WINDOWS_H
#include <windows.h>
/* BOOL FindClose(HANDLE); */
/* HANDLE FindFirstFileA(LPCSTR, WIN32_FIND_DATAA *); */
/* HANDLE FindFirstFileW(LPCWSTR, WIN32_FIND_DATAW *); */
/* BOOL FindNextFileA(HANDLE, WIN32_FIND_DATAA *); */
/* BOOL FindNextFileW(HANDLE, WIN32_FIND_DATAW *); */
/* DWORD GetModuleFileNameA(HMODULE, LPSTR, DWORD); */
/* DWORD GetModuleFileNameW(HMODULE, LPWSTR, DWORD); */
/* LCID GetSystemDefaultLCID(void); */
/* BOOL SetThreadLocale(LCID); */
#endif
#ifndef NULL
#define NULL ((void *)0)
#endif
#ifndef WINMAIN_CLIBDECL
#define WINMAIN_CLIBDECL __cdecl
#endif
#ifndef WINMAIN_CONST
#define WINMAIN_CONST const
#endif
#ifndef WINMAIN_STATIC
#define WINMAIN_STATIC static
#endif
#ifndef WINMAIN_INIT
#define WINMAIN_INIT /* empty */
#endif
#ifdef WINMAIN_PARSECMDLINE
#ifndef WINMAIN_WCHAR
#ifdef UNDER_CE
#define WINMAIN_WCHAR
#endif
#endif
#endif
#ifdef WINMAIN_WCHAR
#define WINMAIN_TCHAR_OF(a, w) w
#else
#define WINMAIN_TCHAR_OF(a, w) a
#endif
#define WINMAIN_CHAR_T WINMAIN_TCHAR_OF(char, wchar_t)
#ifdef WINMAIN_TWOARGS
#define WINMAIN_MAIN_F(ac, av, env) WINMAIN_TCHAR_OF(main, wmain)(ac, av)
#else
#define WINMAIN_MAIN_F(ac, av, env) WINMAIN_TCHAR_OF(main, wmain)(ac, av, env)
#endif
#ifdef WINMAIN_EMPTYENV
#ifndef WINMAIN_TWOARGS
WINMAIN_STATIC WINMAIN_CHAR_T *WINMAIN_CONST winmain_empty_environ = NULL;
#endif
#define WINMAIN_MAIN_ENVARG ((WINMAIN_CHAR_T **)&winmain_empty_environ)
#else
#define WINMAIN_MAIN_ENVARG WINMAIN_TCHAR_OF(_environ, _wenviron)
#endif
#ifdef WINMAIN_MSVCRT
__declspec(dllimport) char **__initenv;
#ifdef WINMAIN_WCHAR
__declspec(dllimport) wchar_t **__winitenv;
#endif
#endif
extern int WINMAIN_CLIBDECL WINMAIN_MAIN_F(int argc, WINMAIN_CHAR_T **targv,
WINMAIN_CHAR_T **tenv);
#ifdef WINMAIN_PARSECMDLINE
#ifndef WINMAIN_PROGPATH_BUFSIZE
#define WINMAIN_PROGPATH_BUFSIZE 512
#endif
#ifndef WINMAIN_MALLOC
#define WINMAIN_MALLOC malloc
#endif
#ifndef WINMAIN_FREE
#define WINMAIN_FREE free
#endif
#ifndef WINMAIN_NOMEM_ABORT
#define WINMAIN_NOMEM_ABORT exit(-1)
#endif
#ifdef WINMAIN_USECRTGLOB
#ifndef WINMAIN_NOGLOB
extern int _CRT_glob;
#endif
#endif
WINMAIN_STATIC WINMAIN_CHAR_T *winmain_get_progname(void)
{
WINMAIN_CHAR_T *tpath = NULL;
int len;
WINMAIN_CHAR_T tbuf[WINMAIN_PROGPATH_BUFSIZE];
len = (int)WINMAIN_TCHAR_OF(GetModuleFileNameA, GetModuleFileNameW)(NULL,
tbuf, WINMAIN_PROGPATH_BUFSIZE);
if (len > 0 && (tpath = WINMAIN_MALLOC((len + 1) *
sizeof(WINMAIN_CHAR_T))) != NULL)
{
tpath[len] = (WINMAIN_CHAR_T)0;
#ifdef WINMAIN_NOGLOB
while (len-- > 0)
tpath[len] = tbuf[len];
#else
(void)memcpy(tpath, tbuf, len * sizeof(WINMAIN_CHAR_T));
#endif
}
return tpath;
}
WINMAIN_STATIC int winmain_scan_token(int *plen, int pos,
WINMAIN_CONST WINMAIN_CHAR_T *tcmdline)
{
int isquote = 0;
if (tcmdline[pos] == '"')
{
isquote = 1;
pos++;
}
for(;;)
{
if (tcmdline[pos] == '"')
{
pos++;
isquote = 1 - isquote;
}
else
{
if (!tcmdline[pos] ||
(!isquote && (tcmdline[pos] == ' ' || tcmdline[pos] == '\t')))
break;
if (tcmdline[pos] != '\\' || tcmdline[pos + 1] != '"' ||
++pos == 1 || tcmdline[pos - 2] != '\\')
{
(*plen)++;
pos++;
}
}
}
return pos;
}
WINMAIN_STATIC int winmain_copy_token(WINMAIN_CHAR_T *tstr,
WINMAIN_CONST WINMAIN_CHAR_T *tcmdline, int pos)
{
int len = 0;
int isquote = 0;
int wildcard = 0;
if (tcmdline[pos] == '"')
{
isquote = 1;
pos++;
}
for(;;)
{
if (tcmdline[pos] == '"')
{
pos++;
isquote = 1 - isquote;
}
else
{
if (!tcmdline[pos] ||
(!isquote && (tcmdline[pos] == ' ' || tcmdline[pos] == '\t')))
break;
if (tcmdline[pos] != '\\')
{
#ifndef WINMAIN_NOGLOB
if ((tcmdline[pos] == '*' || tcmdline[pos] == '?') && !isquote)
wildcard = 1;
#endif
tstr[len++] = tcmdline[pos++];
}
else if (tcmdline[pos + 1] != '"' || ++pos == 1 ||
tcmdline[pos - 2] != '\\')
tstr[len++] = tcmdline[pos++];
}
}
tstr[len] = (WINMAIN_CHAR_T)0;
return wildcard;
}
#ifndef WINMAIN_NOGLOB
WINMAIN_STATIC WINMAIN_CHAR_T **winmain_grow_argv(WINMAIN_CHAR_T **targv,
int *pcapacity)
{
int newsize = *pcapacity / 3 + *pcapacity + 3;
WINMAIN_CHAR_T **tnewargv = WINMAIN_MALLOC((newsize + 1) * sizeof(void *));
if (tnewargv != NULL)
{
(void)memcpy(tnewargv, targv, *pcapacity * sizeof(void *));
*pcapacity = newsize;
WINMAIN_FREE(targv);
}
return tnewargv;
}
WINMAIN_STATIC WINMAIN_CHAR_T **winmain_argv_adjsize(WINMAIN_CHAR_T **targv,
int argc)
{
WINMAIN_CHAR_T **tnewargv;
if ((tnewargv = WINMAIN_MALLOC((argc + 1) * sizeof(void *))) != NULL)
{
(void)memcpy(tnewargv, targv, argc * sizeof(void *));
WINMAIN_FREE(targv);
targv = tnewargv;
}
return targv;
}
WINMAIN_STATIC WINMAIN_CHAR_T **winmain_process_wildcards(
WINMAIN_CHAR_T **targv, int *pindex, int *pargc, int *pcapacity)
{
HANDLE handle;
WINMAIN_CHAR_T *tstr = targv[*pindex];
WINMAIN_CHAR_T *tpath;
int pos;
int len;
int found;
WINMAIN_TCHAR_OF(WIN32_FIND_DATAA, WIN32_FIND_DATAW) finddata;
if ((handle = WINMAIN_TCHAR_OF(FindFirstFileA, FindFirstFileW)(tstr,
&finddata)) != INVALID_HANDLE_VALUE)
{
pos = 0;
while (tstr[pos])
pos++;
while (pos-- > 0)
if (tstr[pos] == '\\' || tstr[pos] == '/')
break;
if (++pos == 0 && tstr[1] == ':' && ((tstr[0] >= 'A' && tstr[0] <= 'Z') ||
(tstr[0] >= 'a' && tstr[0] <= 'z')))
pos = 2;
found = 0;
do
{
if (finddata.cFileName[0] != '.' || (finddata.cFileName[1] &&
(finddata.cFileName[1] != '.' || finddata.cFileName[2])))
{
if (*pargc > *pcapacity &&
(targv = winmain_grow_argv(targv, pcapacity)) == NULL)
break;
len = 0;
while (finddata.cFileName[len])
len++;
if ((tpath = WINMAIN_MALLOC((pos + len + 1) *
sizeof(WINMAIN_CHAR_T))) == NULL)
{
targv = NULL;
break;
}
if (pos > 0)
(void)memcpy(tpath, tstr, pos * sizeof(WINMAIN_CHAR_T));
(void)memcpy(&tpath[pos], finddata.cFileName,
len * sizeof(WINMAIN_CHAR_T));
tpath[pos + len] = (WINMAIN_CHAR_T)0;
targv[(*pindex)++] = tpath;
(*pargc)++;
found = 1;
}
} while (WINMAIN_TCHAR_OF(FindNextFileA, FindNextFileW)(handle, &finddata));
(void)FindClose(handle);
if (found)
{
(*pindex)--;
(*pargc)--;
WINMAIN_FREE(tstr);
}
}
return targv;
}
#endif /* ! WINMAIN_NOGLOB */
WINMAIN_STATIC WINMAIN_CHAR_T **winmain_parse_cmdline(int *pargc,
WINMAIN_CONST WINMAIN_CHAR_T *tcmdline)
{
WINMAIN_CHAR_T **targv;
int argc = 1;
int index;
int start;
int pos = 0;
int len = 0;
#ifndef WINMAIN_NOGLOB
int capacity;
#endif
do
{
while (tcmdline[pos] == ' ' || tcmdline[pos] == '\t')
pos++;
if (!tcmdline[pos])
break;
pos = winmain_scan_token(&len, pos, tcmdline);
argc++;
} while (tcmdline[pos++]);
if ((targv = WINMAIN_MALLOC((argc + 1) * sizeof(void *))) == NULL ||
(targv[0] = winmain_get_progname()) == NULL)
WINMAIN_NOMEM_ABORT;
pos = 0;
#ifndef WINMAIN_NOGLOB
capacity = argc;
#endif
for (index = 1; index < argc; index++)
{
while (tcmdline[pos] == ' ' || tcmdline[pos] == '\t')
pos++;
start = pos;
len = 0;
pos = winmain_scan_token(&len, pos, tcmdline) + 1;
if ((targv[index] = WINMAIN_MALLOC((len + 1) *
sizeof(WINMAIN_CHAR_T))) == NULL)
WINMAIN_NOMEM_ABORT;
#ifdef WINMAIN_NOGLOB
(void)winmain_copy_token(targv[index], tcmdline, start);
#else
if (winmain_copy_token(targv[index], tcmdline, start) &&
#ifdef WINMAIN_USECRTGLOB
_CRT_glob &&
#endif
(targv = winmain_process_wildcards(targv, &index, &argc,
&capacity)) == NULL)
WINMAIN_NOMEM_ABORT;
#endif
}
#ifndef WINMAIN_NOGLOB
if (argc < capacity)
targv = winmain_argv_adjsize(targv, argc);
#endif
targv[argc] = NULL;
*pargc = argc;
return targv;
}
#endif /* WINMAIN_PARSECMDLINE */
/*ARGSUSED*/
int WINAPI /* APIENTRY */
#ifdef UNDER_CE
WinMain(HINSTANCE inst, HINSTANCE previnst, LPWSTR cmdline, int cmdshow)
#else
WINMAIN_TCHAR_OF(WinMain, wWinMain)(HINSTANCE inst, HINSTANCE previnst,
WINMAIN_TCHAR_OF(LPSTR, LPWSTR) cmdline, int cmdshow)
#endif
{
int res;
#ifdef WINMAIN_PARSECMDLINE
WINMAIN_CHAR_T **targv;
#endif
WINMAIN_INIT;
#ifdef WINMAIN_SETLOCALE
SetThreadLocale(GetSystemDefaultLCID());
#endif
#ifdef WINMAIN_MSVCRT
__initenv = _environ;
#ifdef WINMAIN_WCHAR
__winitenv = _wenviron;
#endif
#endif
#ifdef WINMAIN_PARSECMDLINE
targv = winmain_parse_cmdline(&res, cmdline);
#ifndef WINMAIN_NOSTOREARGV
WINMAIN_TCHAR_OF(__argv, __wargv) = targv;
__argc = res;
#endif
res = WINMAIN_MAIN_F(res, targv, WINMAIN_MAIN_ENVARG);
#else
res = WINMAIN_MAIN_F(__argc, WINMAIN_TCHAR_OF(__argv, __wargv),
WINMAIN_MAIN_ENVARG);
#endif
#ifdef WINMAIN_CALLEXIT
if (inst)
exit(res);
#endif
return res;
}