110 lines
2.0 KiB
C
110 lines
2.0 KiB
C
/*
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* $Id$
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*/
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#include "hbapi.h"
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/* TODO: search this file for TODO and find 'em! */
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char *hb_strtoken(char *szText,
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long lText,
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long lIndex,
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char cDelimiter,
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long *lLen)
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{
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long wStart;
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long wEnd = 0;
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long wCounter = 0;
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HB_TRACE(HB_TR_DEBUG, ("hb_strtoken(%s, %ld, %ld, %d, %p)", szText, lText, lIndex, (int) cDelimiter, lLen));
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do
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{
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wStart = wEnd;
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if( cDelimiter != ' ' )
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{
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if( szText[wStart] == cDelimiter )
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wStart++;
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}
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else
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{
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while( wStart < lText && szText[wStart] == cDelimiter )
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wStart++;
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}
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if( wStart < lText && szText[wStart] != cDelimiter )
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{
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wEnd = wStart + 1;
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while( wEnd < lText && szText[wEnd] != cDelimiter )
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wEnd++;
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}
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else
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wEnd = wStart;
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} while( wCounter++ < lIndex - 1 && wEnd < lText );
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if( wCounter < lIndex )
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{
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*lLen = 0;
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return "";
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}
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else
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{
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*lLen = wEnd - wStart;
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return szText + wStart;
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}
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}
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/* returns the nth occurence of a substring within a token-delimited string */
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HB_FUNC( STRTOKEN )
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{
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char *szText;
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long lIndex = hb_parnl(2);
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char cDelimiter = *hb_parc(3);
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long lLen;
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if( !cDelimiter )
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cDelimiter = ' ';
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szText = hb_strtoken(hb_parc(1), hb_parclen(1), lIndex, cDelimiter, &lLen);
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hb_stornl(lLen, 4);
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hb_retclen(szText, lLen);
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}
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/* debug function to dump the ASCII values of an entire string */
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HB_FUNC( STRDUMP )
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{
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char *szText = hb_parc(1);
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long i, lLength = hb_parclen(1);
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for( i = 0; i < lLength; i++ )
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printf("%d ", szText[i]);
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printf("\n");
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}
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HB_FUNC( ROT13 )
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{
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if( ISCHAR(1) )
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{
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char *szText = hb_parc( 1 );
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ULONG i, lLen = hb_parclen( 1 );
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char *szResult = (char*)hb_xgrab(lLen + 1);
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for( i = 0; i < lLen; i++ )
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{
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char c = szText[i];
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if( (c >= 'A' && c <= 'M') || (c >= 'a' && c <= 'm') )
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c += 13;
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else if( (c >= 'N' && c <= 'Z') || (c >= 'n' && c <= 'z') )
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c -= 13;
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szResult[i] = c;
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}
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hb_retclen(szResult, lLen);
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hb_xfree(szResult);
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}
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else
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hb_retc("");
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}
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