mirror of
https://git.proxmox.com/git/libgit2
synced 2025-05-29 06:20:56 +00:00
78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
/*
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* Copyright (C) the libgit2 contributors. All rights reserved.
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*
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* This file is part of libgit2, distributed under the GNU GPL v2 with
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* a Linking Exception. For full terms see the included COPYING file.
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*/
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#include "common.h"
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#include "error.h"
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#ifdef GIT_WINHTTP
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# include <winhttp.h>
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#endif
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#define WC_ERR_INVALID_CHARS 0x80
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char *git_win32_get_error_message(DWORD error_code)
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{
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LPWSTR lpMsgBuf = NULL;
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HMODULE hModule = NULL;
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char *utf8_msg = NULL;
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int utf8_size;
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DWORD dwFlags =
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FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS;
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if (!error_code)
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return NULL;
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#ifdef GIT_WINHTTP
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/* Errors raised by WinHTTP are not in the system resource table */
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if (error_code >= WINHTTP_ERROR_BASE &&
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error_code <= WINHTTP_ERROR_LAST)
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hModule = GetModuleHandleW(L"winhttp");
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#endif
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GIT_UNUSED(hModule);
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if (hModule)
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dwFlags |= FORMAT_MESSAGE_FROM_HMODULE;
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else
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dwFlags |= FORMAT_MESSAGE_FROM_SYSTEM;
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if (FormatMessageW(dwFlags, hModule, error_code,
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPWSTR)&lpMsgBuf, 0, NULL)) {
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/* Invalid code point check supported on Vista+ only */
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if (LOBYTE(LOWORD(GetVersion())) >= 6)
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dwFlags = WC_ERR_INVALID_CHARS;
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else
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dwFlags = 0;
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utf8_size = WideCharToMultiByte(CP_UTF8, dwFlags,
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lpMsgBuf, -1, NULL, 0, NULL, NULL);
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if (!utf8_size) {
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assert(0);
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goto on_error;
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}
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utf8_msg = git__malloc(utf8_size);
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if (!utf8_msg)
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goto on_error;
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if (!WideCharToMultiByte(CP_UTF8, dwFlags,
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lpMsgBuf, -1, utf8_msg, utf8_size, NULL, NULL)) {
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git__free(utf8_msg);
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goto on_error;
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}
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on_error:
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LocalFree(lpMsgBuf);
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}
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return utf8_msg;
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}
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