thodg/libgit2/src/win32/error.c

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• Hash : c70455c7
  Author :
  Date : 2013-02-01T22:53:51
  

  Deduplicate FormatMessage UTF-16 to UTF-8 conversion code Signed-off-by: Sven Strickroth <email@cs-ware.de>

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• src/win32/error.c

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  
  #include "common.h"
  #include "error.h"
  
  char *git_win32_get_error_message(DWORD error_code)
  {
  	LPWSTR lpMsgBuf = NULL;
  
  	if (!error_code)
  		return NULL;
  
  	if (FormatMessageW(
  				FORMAT_MESSAGE_ALLOCATE_BUFFER |
  				FORMAT_MESSAGE_FROM_SYSTEM |
  				FORMAT_MESSAGE_IGNORE_INSERTS,
  				NULL, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
  				(LPWSTR)&lpMsgBuf, 0, NULL)) {
  		int utf8_size = WideCharToMultiByte(CP_UTF8, 0, lpMsgBuf, -1, NULL, 0, NULL, NULL);
  
  		char *lpMsgBuf_utf8 = git__malloc(utf8_size * sizeof(char));
  		if (lpMsgBuf_utf8 == NULL) {
  			LocalFree(lpMsgBuf);
  			return NULL;
  		}
  		if (!WideCharToMultiByte(CP_UTF8, 0, lpMsgBuf, -1, lpMsgBuf_utf8, utf8_size, NULL, NULL)) {
  			LocalFree(lpMsgBuf);
  			git__free(lpMsgBuf_utf8);
  			return NULL;
  		}
  
  		LocalFree(lpMsgBuf);
  		return lpMsgBuf_utf8;
  	}
  	return NULL;
  }
  

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