Mercurial > hg > graal-compiler
view src/share/vm/utilities/utf8.hpp @ 20195:418bb2c2b55a
8049327: [TESTBUG] gc/logging/TestGCId.java assumes default PrintGCID value is true
Reviewed-by: ehelin, tschatzl
author | brutisso |
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date | Mon, 07 Jul 2014 14:44:33 +0200 |
parents | 8c03fc47511d |
children |
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/* * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_UTILITIES_UTF8_HPP #define SHARE_VM_UTILITIES_UTF8_HPP #include "memory/allocation.hpp" #include "utilities/top.hpp" // Low-level interface for UTF8 strings class UTF8 : AllStatic { public: // returns the unicode length of a 0-terminated utf8 string static int unicode_length(const char* utf8_str); // returns the unicode length of a non-0-terminated utf8 string static int unicode_length(const char* utf8_str, int len); // converts a utf8 string to a unicode string static void convert_to_unicode(const char* utf8_str, jchar* unicode_buffer, int unicode_length); // returns the quoted ascii length of a utf8 string static int quoted_ascii_length(const char* utf8_str, int utf8_length); // converts a utf8 string to quoted ascii static void as_quoted_ascii(const char* utf8_str, int utf8_length, char* buf, int buflen); // converts a quoted ascii string to utf8 string. returns the original // string unchanged if nothing needs to be done. static const char* from_quoted_ascii(const char* quoted_ascii_string); // decodes the current utf8 character, stores the result in value, // and returns the end of the current utf8 chararacter. static char* next(const char* str, jchar* value); // decodes the current utf8 character, gets the supplementary character instead of // the surrogate pair when seeing a supplementary character in string, // stores the result in value, and returns the end of the current utf8 chararacter. static char* next_character(const char* str, jint* value); // Utility methods static const jbyte* strrchr(const jbyte* base, int length, jbyte c); static bool equal(const jbyte* base1, int length1, const jbyte* base2,int length2); static bool is_supplementary_character(const unsigned char* str); static jint get_supplementary_character(const unsigned char* str); }; // Low-level interface for UNICODE strings // A unicode string represents a string in the UTF-16 format in which supplementary // characters are represented by surrogate pairs. Index values refer to char code // units, so a supplementary character uses two positions in a unicode string. class UNICODE : AllStatic { public: // returns the utf8 size of a unicode character static int utf8_size(jchar c); // returns the utf8 length of a unicode string static int utf8_length(jchar* base, int length); // converts a unicode string to utf8 string static void convert_to_utf8(const jchar* base, int length, char* utf8_buffer); // converts a unicode string to a utf8 string; result is allocated // in resource area unless a buffer is provided. static char* as_utf8(jchar* base, int length); static char* as_utf8(jchar* base, int length, char* buf, int buflen); // returns the quoted ascii length of a unicode string static int quoted_ascii_length(jchar* base, int length); // converts a utf8 string to quoted ascii static void as_quoted_ascii(const jchar* base, int length, char* buf, int buflen); }; #endif // SHARE_VM_UTILITIES_UTF8_HPP