112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
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/***
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*wincmdln.c - process command line for WinMain
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*
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* Copyright (c) 1997-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Prepare command line to be passed to [w]WinMain.
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*
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*Revision History:
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* 06-23-97 GJF Module created by extracting the code from crt0.c
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* 03-24-01 PML Protect against null _[aw]cmdln (vs7#229081)
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*
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*******************************************************************************/
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#include <internal.h>
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#include <tchar.h>
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#define SPACECHAR _T(' ')
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#define DQUOTECHAR _T('\"')
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/*
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* Flag to ensure multibyte ctype table is only initialized once
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*/
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extern int __mbctype_initialized;
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/***
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*_[w]wincmdln
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*
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*Purpose:
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* Extract the command line tail to be passed to WinMain.
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*
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* Be warned! This code was originally implemented by the NT group and
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* has remained pretty much unchanged since 12-91. It should be changed
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* only with extreme care since there are undoubtedly many apps which
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* depend on its historical behavior.
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*
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*Entry:
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* The global variable _[a|w]cmdln is set to point at the complete
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* command line.
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*
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*Exit:
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* Returns a pointer to the command line tail.
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*
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*Exceptions:
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*
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*******************************************************************************/
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_TUCHAR * __cdecl
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#ifdef WPRFLAG
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_wwincmdln(
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#else
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_wincmdln(
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#endif
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void
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)
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{
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_TUCHAR *lpszCommandLine;
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#ifdef _MBCS
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/*
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* If necessary, initialize the multibyte ctype table
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*/
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if ( __mbctype_initialized == 0 )
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__initmbctable();
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#endif
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/*
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* Skip past program name (first token in command line).
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* Check for and handle quoted program name.
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*/
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#ifdef WPRFLAG
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lpszCommandLine = _wcmdln == NULL ? L"" : (wchar_t *)_wcmdln;
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#else
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lpszCommandLine = _acmdln == NULL ? "" : (unsigned char *)_acmdln;
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#endif
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if ( *lpszCommandLine == DQUOTECHAR ) {
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/*
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* Scan, and skip over, subsequent characters until
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* another double-quote or a null is encountered.
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*/
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while ( (*(++lpszCommandLine) != DQUOTECHAR)
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&& (*lpszCommandLine != _T('\0')) )
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{
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#ifdef _MBCS
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if (_ismbblead(*lpszCommandLine))
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lpszCommandLine++;
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#endif
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}
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/*
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* If we stopped on a double-quote (usual case), skip
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* over it.
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*/
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if ( *lpszCommandLine == DQUOTECHAR )
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lpszCommandLine++;
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}
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else {
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while (*lpszCommandLine > SPACECHAR)
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lpszCommandLine++;
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}
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/*
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* Skip past any white space preceeding the second token.
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*/
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while (*lpszCommandLine && (*lpszCommandLine <= SPACECHAR))
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lpszCommandLine++;
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return lpszCommandLine;
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}
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