/*

** Copyright 1991-1996 Apple Computer. All rights reserved.

**

**  You may incorporate this sample code into your applications without

**  restriction, though the sample code has been provided "AS IS" and the

**  responsibility for its operation is 100% yours.  However, what you are

**  not permitted to do is to redistribute the source as "DSC Sample Code"

**  after having made changes. If you're going to re-distribute the source,

**  we require that you make it clear in the source that the code was

**  descended from Apple Sample Code, but that you've made changes.

*/

#include <Types.h>

#include <Memory.h>

#include <TextUtils.h>

#define PStrlen(s) (*s)

void PStrcpy(unsigned char *dest, unsigned char *src)

{

    BlockMoveData(src, dest, PStrlen(src) + 1);

}

void PStr_InsertChar(unsigned char *s, unsigned char c)

{

    unsigned char theLength = PStrlen(s);

    if (theLength >= 255) return;

    BlockMoveData(s+1,s+2,theLength);

    *(s+1) = c;

    PStrlen(s) = theLength + 1;

}

unsigned char *PStrcat(unsigned char *dst, unsigned char *src)

{

    unsigned char srcLength = PStrlen(src);

    unsigned char dstLength = PStrlen(dst);

    if ((srcLength + dstLength) > 255) {

        return dst;

    }

    BlockMoveData(src+1,dst+dstLength+1,srcLength);

    *dst = (unsigned char)(srcLength + dstLength);

    return dst;

}