92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/*
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* $Id$
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*/
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/*
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* GT CLIPPER STANDARD HEADER
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*
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* File......: strexpan.c
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* Author....: Andy M Leighton
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* BBS.......: The Dark Knight Returns
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* Net/Node..: 050/069
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* User Name.: Andy Leighton
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* Date......: 24/05/93
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* Revision..: 1.00
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*
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* This is an original work by Andy Leighton and is placed in the
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* public domain.
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*/
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/*
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* $DOC$
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* $FUNCNAME$
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* GT_STREXPAND()
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* $CATEGORY$
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* String
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* $ONELINER$
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* Insert fillers between characters in a passed string
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* $SYNTAX$
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* GT_StrExpand(<cStr>, [<nNum>], [<cChar>]) --> cRet
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* $ARGUMENTS$
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* <cStr1> - A character string to insert chars into
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* <nNum> - The number of fill characters to insert (default 1)
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* <cChar> - The fill chararacter (default space)
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* $RETURNS$
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* cRet - The input string with fill characters inserted between
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* every character in the original.
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* $DESCRIPTION$
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* Inserts fill characters into a string.
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*
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* NOTE:
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* invalid parameters will return ""
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* $EXAMPLES$
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*
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* ? gt_strexpand("abc") // prints "a b c"
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* ? gt_strexpand("abc", 2) // prints "a b c"
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* ? gt_strexpand("abc", 2, 'þ') // prints "aþþbþþc"
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*
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* $END$
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*/
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#include "extend.h"
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HARBOUR HB_GT_STREXPAND( void )
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{
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char *in, *out;
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int nIns = 1;
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char *insert = " ";
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int len;
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int i, j, p;
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if (ISCHAR(1) && (ISNUM(2) || hb_pcount() < 2) && (ISCHAR(3) || hb_pcount() < 3)) {
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in = hb_parc(1);
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len = hb_parclen(1);
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if (ISNUM(2))
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nIns = hb_parni(2);
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if (ISCHAR(3))
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insert = hb_parc(3);
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out = (char *)hb_xgrab(len * (nIns + 1)); /* alloc us some memory */
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for (i = 0, p = 0; i < len; i++) { /* loop thru input */
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out[p++] = in[i]; /* insert a character from input */
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if (i < (len - 1)) { /* do not insert fill chars on last */
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/* char of input */
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for (j = 1; j <= nIns; j++) /* insert the fill characters */
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out[p++] = insert[0];
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}
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}
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out[p] = '\0'; /* Add terminating NUL */
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hb_retc(out);
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hb_xfree(out); /* free alloc'ed mem */
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} else {
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hb_retc((char *) NULL); /* parameter mismatch - error NullStr */
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}
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}
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