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113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
//==========================================
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// LIBCTINY - Matt Pietrek 2001
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// MSDN Magazine, January 2001
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//==========================================
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#include <windows.h>
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#include "argcargv.h"
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#define _MAX_CMD_LINE_ARGS 128
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char * _ppszArgv[_MAX_CMD_LINE_ARGS+1];
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int __cdecl _ConvertCommandLineToArgcArgv( void )
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{
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int cbCmdLine;
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int argc;
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PSTR pszSysCmdLine, pszCmdLine;
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// Set to no argv elements, in case we have to bail out
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_ppszArgv[0] = 0;
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// First get a pointer to the system's version of the command line, and
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// figure out how long it is.
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pszSysCmdLine = GetCommandLine();
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cbCmdLine = lstrlen( pszSysCmdLine );
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// Allocate memory to store a copy of the command line. We'll modify
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// this copy, rather than the original command line. Yes, this memory
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// currently doesn't explicitly get freed, but it goes away when the
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// process terminates.
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pszCmdLine = (PSTR)HeapAlloc( GetProcessHeap(), 0, cbCmdLine+1 );
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if ( !pszCmdLine )
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return 0;
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// Copy the system version of the command line into our copy
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lstrcpy( pszCmdLine, pszSysCmdLine );
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if ( '"' == *pszCmdLine ) // If command line starts with a quote ("),
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{ // it's a quoted filename. Skip to next quote.
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pszCmdLine++;
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_ppszArgv[0] = pszCmdLine; // argv[0] == executable name
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while ( *pszCmdLine && (*pszCmdLine != '"') )
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pszCmdLine++;
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if ( *pszCmdLine ) // Did we see a non-NULL ending?
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*pszCmdLine++ = 0; // Null terminate and advance to next char
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else
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return 0; // Oops! We didn't see the end quote
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}
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else // A regular (non-quoted) filename
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{
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_ppszArgv[0] = pszCmdLine; // argv[0] == executable name
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while ( *pszCmdLine && (' ' != *pszCmdLine) && ('\t' != *pszCmdLine) )
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pszCmdLine++;
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if ( *pszCmdLine )
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*pszCmdLine++ = 0; // Null terminate and advance to next char
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}
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// Done processing argv[0] (i.e., the executable name). Now do th
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// actual arguments
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argc = 1;
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while ( 1 )
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{
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// Skip over any whitespace
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while ( *pszCmdLine && (' ' == *pszCmdLine) || ('\t' == *pszCmdLine) )
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pszCmdLine++;
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if ( 0 == *pszCmdLine ) // End of command line???
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return argc;
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if ( '"' == *pszCmdLine ) // Argument starting with a quote???
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{
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pszCmdLine++; // Advance past quote character
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_ppszArgv[ argc++ ] = pszCmdLine;
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_ppszArgv[ argc ] = 0;
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// Scan to end quote, or NULL terminator
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while ( *pszCmdLine && (*pszCmdLine != '"') )
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pszCmdLine++;
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if ( 0 == *pszCmdLine )
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return argc;
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if ( *pszCmdLine )
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*pszCmdLine++ = 0; // Null terminate and advance to next char
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}
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else // Non-quoted argument
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{
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_ppszArgv[ argc++ ] = pszCmdLine;
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_ppszArgv[ argc ] = 0;
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// Skip till whitespace or NULL terminator
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while ( *pszCmdLine && (' '!=*pszCmdLine) && ('\t'!=*pszCmdLine) )
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pszCmdLine++;
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if ( 0 == *pszCmdLine )
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return argc;
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if ( *pszCmdLine )
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*pszCmdLine++ = 0; // Null terminate and advance to next char
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}
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if ( argc >= (_MAX_CMD_LINE_ARGS) )
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return argc;
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}
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}
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