1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef AAPT_TEXT_UNICODE_H 18 #define AAPT_TEXT_UNICODE_H 19 20 #include "androidfw/StringPiece.h" 21 22 namespace aapt { 23 namespace text { 24 25 // Returns true if the Unicode codepoint has the XID_Start property, meaning it can be used as the 26 // first character of a programming language identifier. 27 // http://unicode.org/reports/tr31/#Default_Identifier_Syntax 28 // 29 // XID_Start is a Unicode Derived Core Property. It is a variation of the ID_Start 30 // Derived Core Property, accounting for a few characters that, when normalized, yield valid 31 // characters in the ID_Start set. 32 bool IsXidStart(char32_t codepoint); 33 34 // Returns true if the Unicode codepoint has the XID_Continue property, meaning it can be used in 35 // any position of a programming language identifier, except the first. 36 // http://unicode.org/reports/tr31/#Default_Identifier_Syntax 37 // 38 // XID_Continue is a Unicode Derived Core Property. It is a variation of the ID_Continue 39 // Derived Core Property, accounting for a few characters that, when normalized, yield valid 40 // characters in the ID_Continue set. 41 bool IsXidContinue(char32_t codepoint); 42 43 // Returns true if the Unicode codepoint has the White_Space property. 44 // http://unicode.org/reports/tr44/#White_Space 45 bool IsWhitespace(char32_t codepoint); 46 47 // Returns true if the UTF8 string can be used as a Java identifier. 48 // NOTE: This does not check against the set of reserved Java keywords. 49 bool IsJavaIdentifier(const android::StringPiece& str); 50 51 // Returns true if the UTF8 string can be used as the entry name of a resource name. 52 // This is the `entry` part of package:type/entry. 53 bool IsValidResourceEntryName(const android::StringPiece& str); 54 55 } // namespace text 56 } // namespace aapt 57 58 #endif // AAPT_TEXT_UNICODE_H 59
