125 lines
2.1 KiB
C
125 lines
2.1 KiB
C
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/*
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* UTIL.C
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*
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* Point-of-Sale Control Panel Applet
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*
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* Author: Ervin Peretz
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*
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* (c) 2001 Microsoft Corporation
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*/
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#include <windows.h>
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#include <windowsx.h>
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#include <commctrl.h>
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#include <cpl.h>
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#include <setupapi.h>
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#include <hidsdi.h>
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#include "internal.h"
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#include "res.h"
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#include "debug.h"
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/*
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* WStrNCpy
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*
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* Like wcsncpy, but terminates the string if truncated.
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* Also, tolerates NULL src string.
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*/
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ULONG WStrNCpy(WCHAR *dest, const WCHAR *src, ULONG maxWChars)
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{
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ULONG wCharsWritten = 0;
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ASSERT(dest);
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if (src){
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while ((maxWChars-- > 1) && (*dest++ = *src++)){
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wCharsWritten++;
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}
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if (maxWChars == 1){
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*dest = L'\0';
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wCharsWritten++;
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}
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}
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else {
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*dest = L'\0';
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wCharsWritten++;
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}
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return wCharsWritten;
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}
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/*
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* AsciiToWChar
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*
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* Like mbstowcs, but terminates the string if truncated.
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* Also, tolerates NULL ascii string.
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*/
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ULONG AsciiToWChar(WCHAR *dest, const char *src, ULONG maxChars)
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{
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ULONG charsWritten = 0;
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if (src){
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while ((maxChars-- > 1) && (*dest++ = (WCHAR)*src++)){
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charsWritten++;
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}
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if (maxChars == 1){
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*dest = (WCHAR)NULL;
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charsWritten++;
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}
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}
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else {
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*dest = (WCHAR)NULL;
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charsWritten++;
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}
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return charsWritten;
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}
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VOID IntToWChar(WCHAR *buf, DWORD x)
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{
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int i;
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WCHAR tmpbuf[11] = {0};
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if (x){
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for (i = 10; x && (i >= 0); i--){
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tmpbuf[i] = (WCHAR)(L'0' + (x % 10));
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x /= 10;
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}
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WStrNCpy(buf, &tmpbuf[i+1], 11);
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}
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else {
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WStrNCpy(buf, L"0", 2);
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}
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}
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VOID HexToWChar(WCHAR *buf, DWORD x)
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{
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int i;
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WCHAR tmpbuf[9] = {0};
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if (x){
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for (i = 7; x && (i >= 0); i--){
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ULONG nibble = (x % 16);
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if (nibble < 10){
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tmpbuf[i] = (WCHAR)(L'0' + nibble);
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}
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else {
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tmpbuf[i] = (WCHAR)(L'A' + nibble - 10);
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}
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x /= 16;
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}
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WStrNCpy(buf, &tmpbuf[i+1], 9);
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}
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else {
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WStrNCpy(buf, L"0", 2);
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}
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}
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