extensions/spellcheck/hunspell/src/hunspell_fopen_hooks.h@6474c204b198 (annotated)
extensions/spellcheck/hunspell/src/hunspell_fopen_hooks.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #ifndef fopen_hooks_h__ |
| michael@0 | 6 | #define fopen_hooks_h__ |
| michael@0 | 7 | |
| michael@0 | 8 | /** |
| michael@0 | 9 | * This file is force-included in hunspell code. Its purpose is to add |
| michael@0 | 10 | * readahead to fopen() calls in hunspell without modifying its code, in order |
| michael@0 | 11 | * to ease future upgrades. |
| michael@0 | 12 | * |
| michael@0 | 13 | * This file is force-included through mozilla-config.h which is generated |
| michael@0 | 14 | * during the configure step. |
| michael@0 | 15 | */ |
| michael@0 | 16 | |
| michael@0 | 17 | #include "mozilla/FileUtils.h" |
| michael@0 | 18 | #include <stdio.h> |
| michael@0 | 19 | #include <string.h> |
| michael@0 | 20 | |
| michael@0 | 21 | #if defined(XP_WIN) |
| michael@0 | 22 | #include "nsNativeCharsetUtils.h" |
| michael@0 | 23 | #include "nsString.h" |
| michael@0 | 24 | |
| michael@0 | 25 | #include <fcntl.h> |
| michael@0 | 26 | #include <windows.h> |
| michael@0 | 27 | // Hunspell defines a function named near. Windef.h #defines near. |
| michael@0 | 28 | #undef near |
| michael@0 | 29 | // mozHunspell defines a function named RemoveDirectory. |
| michael@0 | 30 | #undef RemoveDirectory |
| michael@0 | 31 | #endif /* defined(XP_WIN) */ |
| michael@0 | 32 | |
| michael@0 | 33 | inline FILE* |
| michael@0 | 34 | hunspell_fopen_readahead(const char* filename, const char* mode) |
| michael@0 | 35 | { |
| michael@0 | 36 | if (!filename || !mode) { |
| michael@0 | 37 | return nullptr; |
| michael@0 | 38 | } |
| michael@0 | 39 | // Fall back to libc's fopen for modes not supported by ReadAheadFile |
| michael@0 | 40 | if (!strchr(mode, 'r') || strchr(mode, '+')) { |
| michael@0 | 41 | return fopen(filename, mode); |
| michael@0 | 42 | } |
| michael@0 | 43 | int fd = -1; |
| michael@0 | 44 | #if defined(XP_WIN) |
| michael@0 | 45 | // filename is obtained via the nsIFile::nativePath attribute, so |
| michael@0 | 46 | // it is using the Windows ANSI code page, NOT UTF-8! |
| michael@0 | 47 | nsAutoString utf16Filename; |
| michael@0 | 48 | nsresult rv = NS_CopyNativeToUnicode(nsDependentCString(filename), |
| michael@0 | 49 | utf16Filename); |
| michael@0 | 50 | if (NS_FAILED(rv)) { |
| michael@0 | 51 | return nullptr; |
| michael@0 | 52 | } |
| michael@0 | 53 | HANDLE handle = INVALID_HANDLE_VALUE; |
| michael@0 | 54 | mozilla::ReadAheadFile(utf16Filename.get(), 0, SIZE_MAX, &handle); |
| michael@0 | 55 | if (handle == INVALID_HANDLE_VALUE) { |
| michael@0 | 56 | return nullptr; |
| michael@0 | 57 | } |
| michael@0 | 58 | int flags = _O_RDONLY; |
| michael@0 | 59 | // MSVC CRT's _open_osfhandle only supports adding _O_TEXT, not _O_BINARY |
| michael@0 | 60 | if (strchr(mode, 't')) { |
| michael@0 | 61 | // Force translated mode |
| michael@0 | 62 | flags |= _O_TEXT; |
| michael@0 | 63 | } |
| michael@0 | 64 | // Import the Win32 fd into the CRT |
| michael@0 | 65 | fd = _open_osfhandle((intptr_t)handle, flags); |
| michael@0 | 66 | if (fd < 0) { |
| michael@0 | 67 | CloseHandle(handle); |
| michael@0 | 68 | return nullptr; |
| michael@0 | 69 | } |
| michael@0 | 70 | #else |
| michael@0 | 71 | mozilla::ReadAheadFile(filename, 0, SIZE_MAX, &fd); |
| michael@0 | 72 | if (fd < 0) { |
| michael@0 | 73 | return nullptr; |
| michael@0 | 74 | } |
| michael@0 | 75 | #endif /* defined(XP_WIN) */ |
| michael@0 | 76 | |
| michael@0 | 77 | FILE* file = fdopen(fd, mode); |
| michael@0 | 78 | if (!file) { |
| michael@0 | 79 | close(fd); |
| michael@0 | 80 | } |
| michael@0 | 81 | return file; |
| michael@0 | 82 | } |
| michael@0 | 83 | |
| michael@0 | 84 | #define fopen(filename, mode) hunspell_fopen_readahead(filename, mode) |
| michael@0 | 85 | |
| michael@0 | 86 | #endif /* fopen_hooks_h__ */ |
| michael@0 | 87 |
