diff options
Diffstat (limited to 'third_party/llvm-project/ConvertUTF.cpp')
| -rw-r--r-- | third_party/llvm-project/ConvertUTF.cpp | 58 |
1 files changed, 42 insertions, 16 deletions
diff --git a/third_party/llvm-project/ConvertUTF.cpp b/third_party/llvm-project/ConvertUTF.cpp index e24a918c5..bc04c5ab5 100644 --- a/third_party/llvm-project/ConvertUTF.cpp +++ b/third_party/llvm-project/ConvertUTF.cpp @@ -6,25 +6,41 @@ * *===------------------------------------------------------------------------=*/ /* - * Copyright 2001-2004 Unicode, Inc. + * Copyright © 1991-2015 Unicode, Inc. All rights reserved. + * Distributed under the Terms of Use in + * http://www.unicode.org/copyright.html. * - * Disclaimer + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of the Unicode data files and any associated documentation + * (the "Data Files") or Unicode software and any associated documentation + * (the "Software") to deal in the Data Files or Software + * without restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, and/or sell copies of + * the Data Files or Software, and to permit persons to whom the Data Files + * or Software are furnished to do so, provided that + * (a) this copyright and permission notice appear with all copies + * of the Data Files or Software, + * (b) this copyright and permission notice appear in associated + * documentation, and + * (c) there is clear notice in each modified Data File or in the Software + * as well as in the documentation associated with the Data File(s) or + * Software that the data or software has been modified. * - * This source code is provided as is by Unicode, Inc. No claims are - * made as to fitness for any particular purpose. No warranties of any - * kind are expressed or implied. The recipient agrees to determine - * applicability of information provided. If this file has been - * purchased on magnetic or optical media from Unicode, Inc., the - * sole remedy for any claim will be exchange of defective media - * within 90 days of receipt. + * THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF + * ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE + * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT OF THIRD PARTY RIGHTS. + * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS + * NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL + * DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THE DATA FILES OR SOFTWARE. * - * Limitations on Rights to Redistribute This Code - * - * Unicode, Inc. hereby grants the right to freely use the information - * supplied in this file in the creation of products supporting the - * Unicode Standard, and to make copies of this file in any form - * for internal or external distribution as long as this notice - * remains attached. + * Except as contained in this notice, the name of a copyright holder + * shall not be used in advertising or otherwise to promote the sale, + * use or other dealings in these Data Files or Software without prior + * written authorization of the copyright holder. */ /* --------------------------------------------------------------------- @@ -417,6 +433,16 @@ Boolean isLegalUTF8Sequence(const UTF8 *source, const UTF8 *sourceEnd) { return isLegalUTF8(source, length); } +/* + * Exported function to return the size of the first utf-8 code unit sequence, + * Or 0 if the sequence is not valid; + */ +unsigned getUTF8SequenceSize(const UTF8 *source, const UTF8 *sourceEnd) { + int length = trailingBytesForUTF8[*source] + 1; + return (length <= sourceEnd - source && isLegalUTF8(source, length)) ? length + : 0; +} + /* --------------------------------------------------------------------- */ static unsigned |