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/* $Id: startuphacks-win.c 2413 2010-09-11 17:43:04Z bird $ */
/** @file
* kBuild - Alternative argument parser for the windows startup code.
*
* @todo Update license when SED is updated.
*/
/*
* Copyright (c) 2006-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
*
* parse_args(): Copyright (c) 1992-1998 by Eberhard Mattes
*
*
* This file is part of kBuild.
*
* kBuild 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 of the License, or
* (at your option) any later version.
*
* kBuild 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with kBuild; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include <stdlib.h>
#include <malloc.h>
#include <Windows.h>
/*******************************************************************************
* Internal Functions *
*******************************************************************************/
static int parse_args(const char *pszSrc, char **argv, char *pchPool);
/*******************************************************************************
* Global Variables *
*******************************************************************************/
/** argument count found by parse_args(). */
static int g_cArgs = 0;
/** the argument vector, for __getmainargs(). */
static char **g_papszArgs = NULL;
int __cdecl _setargv(void)
{
static char s_szProgramName[MAX_PATH + 1];
const char *pszCmdLine;
char *pszCmdLineBuf;
int cb;
/*
* Set the program name.
*/
GetModuleFileName(NULL, s_szProgramName, MAX_PATH);
s_szProgramName[MAX_PATH] = '\0';
#if _MSC_VER >= 1400 && !defined(CRTDLL) && !defined(_DLL)
_set_pgmptr(s_szProgramName);
#endif
/*
* Get the commandline, use the program name if nothings available.
*/
pszCmdLine = (const char *)GetCommandLineA();
if (!pszCmdLine || !*pszCmdLine)
pszCmdLine = s_szProgramName;
/*
* Parse the argument commandline emitting the unix argument vector.
*/
cb = parse_args(pszCmdLine, NULL, NULL);
g_papszArgs = malloc(sizeof(*g_papszArgs) * (g_cArgs + 2));
if (!g_papszArgs)
return -1;
pszCmdLineBuf = malloc(cb);
if (!pszCmdLineBuf)
return -1;
parse_args(pszCmdLine, g_papszArgs, pszCmdLineBuf);
g_papszArgs[g_cArgs] = g_papszArgs[g_cArgs + 1] = NULL;
/* set return variables */
__argc = g_cArgs;
__argv = g_papszArgs;
return 0;
}
/* when linking with the crtexe.c, the __getmainargs() call will redo the _setargv job inside the msvc*.dll. */
int __cdecl __getmainargs(int *pargc, char ***pargv, char ***penvp, int dowildcard, /*_startupinfo*/ void *startinfo)
{
__argc = *pargc = g_cArgs;
__argv = *pargv = g_papszArgs;
*penvp = _environ;
return 0;
}
#if defined(_M_IX86)
int (__cdecl * _imp____getmainargs)(int *, char ***, char ***, int, /*_startupinfo*/ void *) = __getmainargs;
#else
int (__cdecl * __imp___getmainargs)(int *, char ***, char ***, int, /*_startupinfo*/ void *) = __getmainargs;
#endif
/**
* Parses the argument string passed in as pszSrc.
*
* @returns size of the processed arguments.
* @param pszSrc Pointer to the commandline that's to be parsed.
* @param argv Pointer to argument vector to put argument pointers in. NULL allowed.
* @param pchPool Pointer to memory pchPool to put the arguments into. NULL allowed.
*/
static int parse_args(const char *pszSrc, char **argv, char *pchPool)
{
int bs;
char chQuote;
char *pfFlags;
int cbArgs;
#define PUTC(c) do { ++cbArgs; if (pchPool != NULL) *pchPool++ = (c); } while (0)
#define PUTV do { ++g_cArgs; if (argv != NULL) *argv++ = pchPool; } while (0)
#define WHITE(c) ((c) == ' ' || (c) == '\t')
#define _ARG_DQUOTE 0x01 /* Argument quoted (") */
#define _ARG_RESPONSE 0x02 /* Argument read from response file */
#define _ARG_WILDCARD 0x04 /* Argument expanded from wildcard */
#define _ARG_ENV 0x08 /* Argument from environment */
#define _ARG_NONZERO 0x80 /* Always set, to avoid end of string */
g_cArgs = 0; cbArgs = 0;
#if 0
/* argv[0] */
PUTC((char)_ARG_NONZERO);
PUTV;
for (;;)
{
PUTC(*pszSrc);
if (*pszSrc == 0)
break;
++pszSrc;
}
++pszSrc;
#endif
for (;;)
{
while (WHITE(*pszSrc))
++pszSrc;
if (*pszSrc == 0)
break;
pfFlags = pchPool;
PUTC((char)_ARG_NONZERO);
PUTV;
bs = 0; chQuote = 0;
for (;;)
{
if (!chQuote ? (*pszSrc == '"' || *pszSrc == '\'') : *pszSrc == chQuote)
{
while (bs >= 2)
{
PUTC('\\');
bs -= 2;
}
if (bs & 1)
PUTC(*pszSrc);
else
{
chQuote = chQuote ? 0 : *pszSrc;
if (pfFlags != NULL)
*pfFlags |= _ARG_DQUOTE;
}
bs = 0;
}
else if (*pszSrc == '\\')
++bs;
else
{
while (bs != 0)
{
PUTC('\\');
--bs;
}
if (*pszSrc == 0 || (WHITE(*pszSrc) && !chQuote))
break;
PUTC(*pszSrc);
}
++pszSrc;
}
PUTC(0);
}
return cbArgs;
}
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