| /* |
| * Copyright (C) 2007, 2008 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef WTF_ASCIICType_h |
| #define WTF_ASCIICType_h |
| |
| #include <wtf/Platform.h> |
| |
| // The behavior of many of the functions in the <ctype.h> header is dependent |
| // on the current locale. But in the WebKit project, all uses of those functions |
| // are in code processing something that's not locale-specific. These equivalents |
| // for some of the <ctype.h> functions are named more explicitly, not dependent |
| // on the C library locale, and we should also optimize them as needed. |
| |
| // All functions return false or leave the character unchanged if passed a character |
| // that is outside the range 0-7F. So they can be used on Unicode strings or |
| // characters if the intent is to do processing only if the character is ASCII. |
| |
| namespace WTF { |
| |
| inline bool isASCIIAlpha(char c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } |
| inline bool isASCIIAlpha(unsigned short c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } |
| #if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED) |
| inline bool isASCIIAlpha(wchar_t c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } |
| #endif |
| inline bool isASCIIAlpha(int c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } |
| |
| inline bool isASCIIAlphanumeric(char c) { return c >= '0' && c <= '9' || (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } |
| inline bool isASCIIAlphanumeric(unsigned short c) { return c >= '0' && c <= '9' || (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } |
| #if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED) |
| inline bool isASCIIAlphanumeric(wchar_t c) { return c >= '0' && c <= '9' || (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } |
| #endif |
| inline bool isASCIIAlphanumeric(int c) { return c >= '0' && c <= '9' || (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } |
| |
| inline bool isASCIIDigit(char c) { return (c >= '0') & (c <= '9'); } |
| inline bool isASCIIDigit(unsigned short c) { return (c >= '0') & (c <= '9'); } |
| #if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED) |
| inline bool isASCIIDigit(wchar_t c) { return (c >= '0') & (c <= '9'); } |
| #endif |
| inline bool isASCIIDigit(int c) { return (c >= '0') & (c <= '9'); } |
| |
| inline bool isASCIIHexDigit(char c) { return c >= '0' && c <= '9' || (c | 0x20) >= 'a' && (c | 0x20) <= 'f'; } |
| inline bool isASCIIHexDigit(unsigned short c) { return c >= '0' && c <= '9' || (c | 0x20) >= 'a' && (c | 0x20) <= 'f'; } |
| #if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED) |
| inline bool isASCIIHexDigit(wchar_t c) { return c >= '0' && c <= '9' || (c | 0x20) >= 'a' && (c | 0x20) <= 'f'; } |
| #endif |
| inline bool isASCIIHexDigit(int c) { return c >= '0' && c <= '9' || (c | 0x20) >= 'a' && (c | 0x20) <= 'f'; } |
| |
| inline bool isASCIILower(char c) { return c >= 'a' && c <= 'z'; } |
| inline bool isASCIILower(unsigned short c) { return c >= 'a' && c <= 'z'; } |
| #if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED) |
| inline bool isASCIILower(wchar_t c) { return c >= 'a' && c <= 'z'; } |
| #endif |
| inline bool isASCIILower(int c) { return c >= 'a' && c <= 'z'; } |
| |
| inline bool isASCIIUpper(char c) { return c >= 'A' && c <= 'Z'; } |
| inline bool isASCIIUpper(unsigned short c) { return c >= 'A' && c <= 'Z'; } |
| #if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED) |
| inline bool isASCIIUpper(wchar_t c) { return c >= 'A' && c <= 'Z'; } |
| #endif |
| inline bool isASCIIUpper(int c) { return c >= 'A' && c <= 'Z'; } |
| |
| /* |
| Statistics from a run of the PLT on the usage of isASCIISpace: |
| Hex Name Count |
| --- ---- ----- |
| ALL OTHER VALUES 689383 |
| x20 SPACE 294720 |
| x0A NEWLINE 89059 |
| x09 TAB 28320 |
| x0D CARRIAGE RETURN 0 |
| x0C FORMFEED 0 |
| x0B VERTICAL TAB 0 |
| |
| */ |
| |
| inline bool isASCIISpace(char c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); } |
| inline bool isASCIISpace(unsigned short c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); } |
| #if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED) |
| inline bool isASCIISpace(wchar_t c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); } |
| #endif |
| inline bool isASCIISpace(int c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); } |
| |
| inline char toASCIILower(char c) { return c | ((c >= 'A' && c <= 'Z') << 5); } |
| inline unsigned short toASCIILower(unsigned short c) { return c | ((c >= 'A' && c <= 'Z') << 5); } |
| #if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED) |
| inline wchar_t toASCIILower(wchar_t c) { return c | ((c >= 'A' && c <= 'Z') << 5); } |
| #endif |
| inline int toASCIILower(int c) { return c | ((c >= 'A' && c <= 'Z') << 5); } |
| |
| inline char toASCIIUpper(char c) { return static_cast<char>(c & ~((c >= 'a' && c <= 'z') << 5)); } |
| inline unsigned short toASCIIUpper(unsigned short c) { return static_cast<unsigned short>(c & ~((c >= 'a' && c <= 'z') << 5)); } |
| #if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED) |
| inline wchar_t toASCIIUpper(wchar_t c) { return static_cast<wchar_t>(c & ~((c >= 'a' && c <= 'z') << 5)); } |
| #endif |
| inline int toASCIIUpper(int c) { return static_cast<int>(c & ~((c >= 'a' && c <= 'z') << 5)); } |
| |
| } |
| |
| #endif |