Mercurial > hg > graal-compiler
annotate src/share/vm/utilities/utf8.hpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children | f95d63e2154a |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1997, 2003, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 // Low-level interface for UTF8 strings | |
| 26 | |
| 27 class UTF8 : AllStatic { | |
| 28 public: | |
| 29 // returns the unicode length of a 0-terminated uft8 string | |
| 30 static int unicode_length(const char* uft8_str); | |
| 31 | |
| 32 // returns the unicode length of a non-0-terminated uft8 string | |
| 33 static int unicode_length(const char* uft8_str, int len); | |
| 34 | |
| 35 // converts a uft8 string to a unicode string | |
| 36 static void convert_to_unicode(const char* utf8_str, jchar* unicode_buffer, int unicode_length); | |
| 37 | |
| 38 // decodes the current utf8 character, stores the result in value, | |
| 39 // and returns the end of the current uft8 chararacter. | |
| 40 static char* next(const char* str, jchar* value); | |
| 41 | |
| 42 // decodes the current utf8 character, gets the supplementary character instead of | |
| 43 // the surrogate pair when seeing a supplementary character in string, | |
| 44 // stores the result in value, and returns the end of the current uft8 chararacter. | |
| 45 static char* next_character(const char* str, jint* value); | |
| 46 | |
| 47 // Utility methods | |
| 48 static jbyte* strrchr(jbyte* base, int length, jbyte c); | |
| 49 static bool equal(jbyte* base1, int length1, jbyte* base2, int length2); | |
| 50 static bool is_supplementary_character(const unsigned char* str); | |
| 51 static jint get_supplementary_character(const unsigned char* str); | |
| 52 }; | |
| 53 | |
| 54 | |
| 55 // Low-level interface for UNICODE strings | |
| 56 | |
| 57 // A unicode string represents a string in the UTF-16 format in which supplementary | |
| 58 // characters are represented by surrogate pairs. Index values refer to char code | |
| 59 // units, so a supplementary character uses two positions in a unicode string. | |
| 60 | |
| 61 class UNICODE : AllStatic { | |
| 62 public: | |
| 63 // returns the utf8 size of a unicode character | |
| 64 static int utf8_size(jchar c); | |
| 65 | |
| 66 // returns the utf8 length of a unicode string | |
| 67 static int utf8_length(jchar* base, int length); | |
| 68 | |
| 69 // converts a unicode string to utf8 string | |
| 70 static void convert_to_utf8(const jchar* base, int length, char* utf8_buffer); | |
| 71 | |
| 72 // converts a unicode string to a utf8 string; result is allocated | |
| 73 // in resource area unless a buffer is provided. | |
| 74 static char* as_utf8(jchar* base, int length); | |
| 75 static char* as_utf8(jchar* base, int length, char* buf, int buflen); | |
| 76 }; |