71 lines
1.5 KiB
C++
71 lines
1.5 KiB
C++
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/*
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Copyright (c) 1997-1999 Microsoft Corporation
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*/
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#include "sdppch.h"
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#include "sdpgen.h"
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// Isolates tokens by searching for one of the separators
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// and returns the first separator thats found
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CHAR *
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GetToken(
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IN CHAR *String,
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IN BYTE NumSeparators,
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IN const CHAR *SeparatorChars,
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OUT CHAR &Separator
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)
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{
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// validate the input parameters
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ASSERT(NULL != String);
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ASSERT(NULL != SeparatorChars);
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ASSERT(0 != NumSeparators);
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if ( (NULL == String) ||
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(NULL == SeparatorChars) ||
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(0 == NumSeparators) )
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{
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return NULL;
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}
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// advance character by character until the string ends or
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// one of the separators is found
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for ( UINT i=0; ; i++ )
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{
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// check each separator
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for ( UINT j=0; j < NumSeparators; j++ )
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{
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// if the separator matches the current string character
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if ( SeparatorChars[j] == String[i] )
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{
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// copy the separator character
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Separator = String[i];
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// terminate the token with an end of string character
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String[i] = EOS;
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// return the start of the token
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return String;
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}
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}
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// check if the end of string has been reached
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if ( EOS == String[i] )
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{
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return NULL;
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}
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}
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// should never reach here
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ASSERT(FALSE);
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return NULL;
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}
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