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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/* Posix code for gpr snprintf support. */
#include <grpc/support/port_platform.h>
#ifdef GPR_WINDOWS
/* Some platforms (namely msys) need wchar to be included BEFORE
anything else, especially strsafe.h. */
#include <wchar.h>
#include <inttypes.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <strsafe.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log_windows.h>
#include <grpc/support/string_util.h>
#include "src/core/lib/gpr/string.h"
#include "src/core/lib/gpr/string_windows.h"
#if defined UNICODE || defined _UNICODE
LPTSTR
gpr_char_to_tchar(LPCSTR input) {
LPTSTR ret;
int needed = MultiByteToWideChar(CP_UTF8, 0, input, -1, NULL, 0);
if (needed <= 0) return NULL;
ret = (LPTSTR)gpr_malloc((unsigned)needed * sizeof(TCHAR));
MultiByteToWideChar(CP_UTF8, 0, input, -1, ret, needed);
return ret;
}
LPSTR
gpr_tchar_to_char(LPCTSTR input) {
LPSTR ret;
int needed = WideCharToMultiByte(CP_UTF8, 0, input, -1, NULL, 0, NULL, NULL);
if (needed <= 0) return NULL;
ret = (LPSTR)gpr_malloc((unsigned)needed);
WideCharToMultiByte(CP_UTF8, 0, input, -1, ret, needed, NULL, NULL);
return ret;
}
#else
LPSTR gpr_tchar_to_char(LPCTSTR input) { return (LPSTR)gpr_strdup(input); }
LPTSTR gpr_char_to_tchar(LPCTSTR input) { return (LPTSTR)gpr_strdup(input); }
#endif
char* gpr_format_message(int messageid) {
LPTSTR tmessage;
char* message;
DWORD status = FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, (DWORD)messageid, MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT),
(LPTSTR)(&tmessage), 0, NULL);
if (status == 0) return gpr_strdup("Unable to retrieve error string");
message = gpr_tchar_to_char(tmessage);
LocalFree(tmessage);
return message;
}
#endif /* GPR_WINDOWS */
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