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comparison: extensions/spellcheck/hunspell/src/hunspell_fopen_hooks.h
extensions/spellcheck/hunspell/src/hunspell_fopen_hooks.h
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| -1:000000000000 | 0:d0f2a0f99d9e |
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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #ifndef fopen_hooks_h__ | |
| 6 #define fopen_hooks_h__ | |
| 7 | |
| 8 /** | |
| 9 * This file is force-included in hunspell code. Its purpose is to add | |
| 10 * readahead to fopen() calls in hunspell without modifying its code, in order | |
| 11 * to ease future upgrades. | |
| 12 * | |
| 13 * This file is force-included through mozilla-config.h which is generated | |
| 14 * during the configure step. | |
| 15 */ | |
| 16 | |
| 17 #include "mozilla/FileUtils.h" | |
| 18 #include <stdio.h> | |
| 19 #include <string.h> | |
| 20 | |
| 21 #if defined(XP_WIN) | |
| 22 #include "nsNativeCharsetUtils.h" | |
| 23 #include "nsString.h" | |
| 24 | |
| 25 #include <fcntl.h> | |
| 26 #include <windows.h> | |
| 27 // Hunspell defines a function named near. Windef.h #defines near. | |
| 28 #undef near | |
| 29 // mozHunspell defines a function named RemoveDirectory. | |
| 30 #undef RemoveDirectory | |
| 31 #endif /* defined(XP_WIN) */ | |
| 32 | |
| 33 inline FILE* | |
| 34 hunspell_fopen_readahead(const char* filename, const char* mode) | |
| 35 { | |
| 36 if (!filename || !mode) { | |
| 37 return nullptr; | |
| 38 } | |
| 39 // Fall back to libc's fopen for modes not supported by ReadAheadFile | |
| 40 if (!strchr(mode, 'r') || strchr(mode, '+')) { | |
| 41 return fopen(filename, mode); | |
| 42 } | |
| 43 int fd = -1; | |
| 44 #if defined(XP_WIN) | |
| 45 // filename is obtained via the nsIFile::nativePath attribute, so | |
| 46 // it is using the Windows ANSI code page, NOT UTF-8! | |
| 47 nsAutoString utf16Filename; | |
| 48 nsresult rv = NS_CopyNativeToUnicode(nsDependentCString(filename), | |
| 49 utf16Filename); | |
| 50 if (NS_FAILED(rv)) { | |
| 51 return nullptr; | |
| 52 } | |
| 53 HANDLE handle = INVALID_HANDLE_VALUE; | |
| 54 mozilla::ReadAheadFile(utf16Filename.get(), 0, SIZE_MAX, &handle); | |
| 55 if (handle == INVALID_HANDLE_VALUE) { | |
| 56 return nullptr; | |
| 57 } | |
| 58 int flags = _O_RDONLY; | |
| 59 // MSVC CRT's _open_osfhandle only supports adding _O_TEXT, not _O_BINARY | |
| 60 if (strchr(mode, 't')) { | |
| 61 // Force translated mode | |
| 62 flags |= _O_TEXT; | |
| 63 } | |
| 64 // Import the Win32 fd into the CRT | |
| 65 fd = _open_osfhandle((intptr_t)handle, flags); | |
| 66 if (fd < 0) { | |
| 67 CloseHandle(handle); | |
| 68 return nullptr; | |
| 69 } | |
| 70 #else | |
| 71 mozilla::ReadAheadFile(filename, 0, SIZE_MAX, &fd); | |
| 72 if (fd < 0) { | |
| 73 return nullptr; | |
| 74 } | |
| 75 #endif /* defined(XP_WIN) */ | |
| 76 | |
| 77 FILE* file = fdopen(fd, mode); | |
| 78 if (!file) { | |
| 79 close(fd); | |
| 80 } | |
| 81 return file; | |
| 82 } | |
| 83 | |
| 84 #define fopen(filename, mode) hunspell_fopen_readahead(filename, mode) | |
| 85 | |
| 86 #endif /* fopen_hooks_h__ */ | |
| 87 |
