utils.cpp #1

/*******************************************************************************

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*******************************************************************************/

/*******************************************************************************
 * Name		: utils.cpp
 *
 * Author	: dbb
 *
 * Description	: Utilities to copy and duplicate strings to be returned by
 *  the P4 Bridge API.
 *
 ******************************************************************************/
#include "stdafx.h"

/**************************************************************************
*
*  CopyStr: Allocate memory and copy a null terminated char string.
*
*   Returns: Pointer to the new string.
*
**************************************************************************/
char * CopyStr(const char *s)
{
	if (s == NULL)
	{
		return NULL;
	}
    int cnt = strlen(s);
    char * newStr = new char[cnt+1];
    for (int idx = 0; idx < cnt; idx++)
        newStr[idx] = s[idx];
    newStr[cnt] = '\0';
    return newStr;
}

/**************************************************************************
*
*  CopyWStr: Allocate memory and copy a null terminated WHAR string.
*
*   Returns: Pointer to the new string.
*
**************************************************************************/
wchar_t * CopyWStr(const wchar_t *s)
{
	if (s == NULL)
	{
		return NULL;
	}

    int cnt = wcslen(s);
	if (cnt <0)
	{
		return NULL;
	}

    wchar_t * newStr = new wchar_t[cnt+1];
    for (int idx = 0; idx < cnt; idx++)
        newStr[idx] = s[idx];
    newStr[cnt] = '\0';
    return newStr;
}

/**************************************************************************
*
*  AddStr: Allocate memory and create a null terminated char string that is 
*   the union of to strings. "Abcd" + "Efg" = AbcdEfg"
*
*   Returns: Pointer to the new string.
*
**************************************************************************/
char * AddStr(const char *s1, const char *s2)
{
    int cnt1 = strlen(s1);
    int cnt2 = strlen(s2);
	if ((cnt1 + cnt2) <= 0)
	{
		return NULL;
	}
    char * newStr = new char[cnt1 + cnt2 + 1];

    for (int idx = 0; idx < cnt1; idx++)
        newStr[idx] = s1[idx];

    for (int idx = 0; idx < cnt2; idx++)
        newStr[idx + cnt1] = s2[idx];

    newStr[cnt1 + cnt2] = '\0';
    return newStr;
}

/**************************************************************************
*
*  CpyStrBuff: Allocate memory and copy a byte array stored in a StrPtr. Copy
*   is based on byte count, so the buffer can contain null characters and
*   does NOT terminate on null.
*
*   Returns: Pointer to the new char[].
*
**************************************************************************/
char * CpyStrBuff(const char *s, int cnt)
{
    char * newbuff = new char[cnt];
    for (int idx = 0; idx < cnt; idx++)
        newbuff[idx] = s[idx];

    return newbuff;
}

/**************************************************************************
*
*  AddStrBuff: Allocate memory and create a byte array stored in a char[] 
*   that is the union of two btye[]s. Copy is based on byte count, so the 
*   buffer can contain null characters and does NOT terminate on null.
*
*   Returns: Pointer to the new char[].
*
**************************************************************************/
char * AddStrBuff(const char *s1, int cnt1, const char *s2, int cnt2)
{
    char * newbuff = new char[cnt1 + cnt2];
    for (int idx = 0; idx < cnt1; idx++)
        newbuff[idx] = s1[idx];

    for (int idx = 0; idx < cnt2; idx++)
        newbuff[idx + cnt1] = s2[idx];

    return newbuff;
}

//char * CopyStrPtr(const StrPtr *s)
//{
//	char * newStr = new char[s->Length()+1];
//    char * oldStr = s->Text();
//
//	for (int idx = 0; idx < s->Length(); idx++)
//		newStr[idx] = oldStr[idx];
//	newStr[s->Length()] = '\0';
//	return newStr;
//}

//void CopyStrN(char *dst, const char *src, int max)
//{
//	int idx = 0;
//	for (idx = 0; idx < max && src[idx] != '\0' ; idx++)
//		dst[idx] = src[idx];
//	dst[idx] = '\0';
//}

//char * CopyStrPtr(const StrPtr *s)
//{
//	char * newStr = new char[s->Length()+1];
//    char * oldStr = s->Text();
//
//	for (int idx = 0; idx < s->Length(); idx++)
//		newStr[idx] = oldStr[idx];
//	newStr[s->Length()] = '\0';
//	return newStr;
//}