| Ian Hodson | 2ee91b4 | 2012-05-14 12:29:36 +0100 | [diff] [blame] | 1 | /* |
| 2 | * The authors of this software are Rob Pike and Ken Thompson. |
| 3 | * Copyright (c) 2002 by Lucent Technologies. |
| 4 | * Permission to use, copy, modify, and distribute this software for any |
| 5 | * purpose without fee is hereby granted, provided that this entire notice |
| 6 | * is included in all copies of any software which is or includes a copy |
| 7 | * or modification of this software and in all copies of the supporting |
| 8 | * documentation for such software. |
| 9 | * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED |
| 10 | * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY |
| 11 | * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY |
| 12 | * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. |
| 13 | * |
| 14 | * This file and rune.cc have been converted to compile as C++ code |
| 15 | * in name space re2. |
| 16 | */ |
| 17 | #ifndef RE2_UTIL_UTF_H__ |
| 18 | #define RE2_UTIL_UTF_H__ |
| 19 | |
| 20 | #include <stdint.h> |
| 21 | |
| 22 | namespace re2 { |
| 23 | |
| 24 | typedef signed int Rune; /* Code-point values in Unicode 4.0 are 21 bits wide.*/ |
| 25 | |
| 26 | enum |
| 27 | { |
| 28 | UTFmax = 4, /* maximum bytes per rune */ |
| 29 | Runesync = 0x80, /* cannot represent part of a UTF sequence (<) */ |
| 30 | Runeself = 0x80, /* rune and UTF sequences are the same (<) */ |
| 31 | Runeerror = 0xFFFD, /* decoding error in UTF */ |
| 32 | Runemax = 0x10FFFF, /* maximum rune value */ |
| 33 | }; |
| 34 | |
| 35 | int runetochar(char* s, const Rune* r); |
| 36 | int chartorune(Rune* r, const char* s); |
| 37 | int fullrune(const char* s, int n); |
| 38 | int utflen(const char* s); |
| 39 | char* utfrune(const char*, Rune); |
| 40 | |
| 41 | } // namespace re2 |
| 42 | |
| 43 | #endif // RE2_UTIL_UTF_H__ |