projects / libgit2.git / blame
| Commit | Line | Data |
|---|---|---|
| c70455c7 SS |
1 | /* |
| 2 | * Copyright (C) the libgit2 contributors. All rights reserved. | |
| 3 | * | |
| 4 | * This file is part of libgit2, distributed under the GNU GPL v2 with | |
| 5 | * a Linking Exception. For full terms see the included COPYING file. | |
| 6 | */ | |
| 7 | ||
| c70455c7 | 8 | #include "error.h" |
| eae0bfdc | 9 | |
| c2c81615 | 10 | #include "utf-conv.h" |
| c70455c7 | 11 | |
| 8cc2f2d8 PK |
12 | #ifdef GIT_WINHTTP |
| 13 | # include <winhttp.h> | |
| 14 | #endif | |
| 15 | ||
| c70455c7 SS |
16 | char *git_win32_get_error_message(DWORD error_code) |
| 17 | { | |
| 18 | LPWSTR lpMsgBuf = NULL; | |
| 8cc2f2d8 PK |
19 | HMODULE hModule = NULL; |
| 20 | char *utf8_msg = NULL; | |
| 8cc2f2d8 PK |
21 | DWORD dwFlags = |
| 22 | FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS; | |
| c70455c7 SS |
23 | |
| 24 | if (!error_code) | |
| 25 | return NULL; | |
| 26 | ||
| 8cc2f2d8 PK |
27 | #ifdef GIT_WINHTTP |
| 28 | /* Errors raised by WinHTTP are not in the system resource table */ | |
| 29 | if (error_code >= WINHTTP_ERROR_BASE && | |
| 30 | error_code <= WINHTTP_ERROR_LAST) | |
| 31 | hModule = GetModuleHandleW(L"winhttp"); | |
| 32 | #endif | |
| 33 | ||
| 34 | GIT_UNUSED(hModule); | |
| 35 | ||
| 36 | if (hModule) | |
| 37 | dwFlags |= FORMAT_MESSAGE_FROM_HMODULE; | |
| 38 | else | |
| 39 | dwFlags |= FORMAT_MESSAGE_FROM_SYSTEM; | |
| 40 | ||
| 41 | if (FormatMessageW(dwFlags, hModule, error_code, | |
| 42 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | |
| 43 | (LPWSTR)&lpMsgBuf, 0, NULL)) { | |
| c2c81615 PK |
44 | /* Convert the message to UTF-8. If this fails, we will |
| 45 | * return NULL, which is a condition expected by the caller */ | |
| 46 | if (git__utf16_to_8_alloc(&utf8_msg, lpMsgBuf) < 0) | |
| 47 | utf8_msg = NULL; | |
| 8cc2f2d8 | 48 | |
| c70455c7 | 49 | LocalFree(lpMsgBuf); |
| c70455c7 | 50 | } |
| 8cc2f2d8 PK |
51 | |
| 52 | return utf8_msg; | |
| c70455c7 | 53 | } |