140 lines
3.0 KiB
C
140 lines
3.0 KiB
C
/*++
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Copyright (c) 1992-1996 Microsoft Corporation
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Module Name:
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uniconv.c
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Abstract:
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Routine to convert UNICODE to ASCII.
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Environment:
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User Mode - Win32
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Revision History:
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10-May-1996 DonRyan
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Removed banner from Technology Dynamics, Inc.
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--*/
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// WINDOWS DEPENDENCIES -
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#include <nt.h>
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#include <ntdef.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <windows.h>
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#include <snmp.h>
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#include <snmputil.h>
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#ifndef CHICAGO
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#include <ntrtl.h>
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#else
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#include <stdio.h>
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#endif
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#include <string.h>
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#include <stdlib.h>
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// STANDARD DEPENDENCIES -- #include<xxxxx.h> -
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// MODULE DEPENDENCIES -- #include"xxxxx.h" -
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// SELF-DEPENDENCY -- ONE #include"module.h"
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// PUBLIC VARIABLES --(same as in module.h file)--
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INT SNMP_FUNC_TYPE SnmpUtilStrlenW(LPWSTR uni_string )
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{
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int length;
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length = -1;
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while(uni_string[++length] != TEXT('\0'));
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return length ;
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}
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// The return code matches what Uni->Str uses
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LONG SNMP_FUNC_TYPE SnmpUtilUnicodeToAnsi(LPSTR *ansi_string, LPWSTR uni_string, BOOLEAN alloc_it)
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{
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int result;
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LPSTR new_string;
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unsigned short length;
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unsigned short maxlength;
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// initialize
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if (alloc_it) {
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*ansi_string = NULL;
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}
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length = SnmpUtilStrlenW(uni_string);
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maxlength = length + 1;
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if (alloc_it) {
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new_string = SnmpUtilMemAlloc(maxlength * sizeof(CHAR));
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} else {
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new_string = *ansi_string;
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}
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if (new_string == NULL) {
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return(-1);
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}
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if (length) {
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result = WideCharToMultiByte(CP_ACP, 0, uni_string, length, new_string, maxlength, NULL, NULL);
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} else {
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*new_string = '\0';
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result = 1; // converted terminating character
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}
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if (alloc_it) {
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if (result) {
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*ansi_string = new_string;
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} else {
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SNMPDBG((SNMP_LOG_ERROR, "SNMP: API: WideCharToMultiByte returns 0x%08lx.\n", GetLastError()));
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SnmpUtilMemFree(new_string);
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}
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}
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return (result > 0) ? 0 : -1;
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}
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// The return code matches what Uni->Str uses
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LONG SNMP_FUNC_TYPE SnmpUtilAnsiToUnicode(LPWSTR *uni_string, LPSTR ansi_string, BOOLEAN alloc_it)
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{
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int result;
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LPWSTR new_string;
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unsigned short length;
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unsigned short maxlength;
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// initialize
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if (alloc_it) {
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*uni_string = NULL;
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}
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length = strlen(ansi_string);
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maxlength = length + 1;
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if (alloc_it) {
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new_string = SnmpUtilMemAlloc(maxlength * sizeof(WCHAR));
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} else {
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new_string = *uni_string;
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}
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if (new_string == NULL) {
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return(-1);
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}
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if (length) {
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result = MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, ansi_string, length, new_string, maxlength);
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} else {
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*new_string = L'\0';
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result = 1; // converted terminating character
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}
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if (alloc_it) {
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if (result) {
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*uni_string = new_string;
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} else {
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SNMPDBG((SNMP_LOG_ERROR, "SNMP: API: MultiByteToWideChar returns 0x%08lx.\n", GetLastError()));
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SnmpUtilMemFree(new_string);
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}
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}
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return (result > 0) ? 0 : -1;
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} |