1 /* 2 * Copyright (C) 2016 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 STRING_HELPER_H_ 18 19 #define STRING_HELPER_H_ 20 21 #include <string> 22 #include <android-base/macros.h> 23 #include <vector> 24 25 namespace android { 26 27 struct StringHelper { 28 29 enum Case { 30 // return original string 31 kNoCase = 0, 32 // use camelCase 33 kCamelCase = 1, 34 // use PascalCase 35 kPascalCase = 2, 36 // use UP_SNAKE_CASE 37 kUpperSnakeCase = 3, 38 // use low_snake_case 39 kLowerSnakeCase = 4 40 }; 41 42 // methods for a single word, like device 43 // UPPERCASE 44 static std::string Uppercase(const std::string &in); 45 // lowercase 46 static std::string Lowercase(const std::string &in); 47 // Capitalize 48 static std::string Capitalize(const std::string &in); 49 50 // methods for a multi-word identifier, like framebuffer_device 51 static std::string ToCamelCase(const std::string &in); 52 static std::string ToPascalCase(const std::string &in); 53 static std::string ToUpperSnakeCase(const std::string &in); 54 static std::string ToLowerSnakeCase(const std::string &in); 55 static std::string ToCase(Case c, const std::string &in); 56 57 static bool EndsWith(const std::string &in, const std::string &suffix); 58 static bool StartsWith(const std::string &in, const std::string &prefix); 59 60 /* removes suffix once from in if in ends with suffix */ 61 static std::string RTrim(const std::string &in, const std::string &suffix); 62 63 /* removes prefix once from in if in starts with prefix */ 64 static std::string LTrim(const std::string &in, const std::string &prefix); 65 66 /* removes suffix repeatedly from in if in ends with suffix */ 67 static std::string RTrimAll(const std::string &in, const std::string &suffix); 68 69 /* removes prefix repeatedly from in if in starts with prefix */ 70 static std::string LTrimAll(const std::string &in, const std::string &prefix); 71 72 73 static void SplitString( 74 const std::string &s, 75 char c, 76 std::vector<std::string> *components); 77 78 static std::string JoinStrings( 79 const std::vector<std::string> &components, 80 const std::string &separator); 81 82 private: StringHelperStringHelper83 StringHelper() {} 84 85 static void Tokenize(const std::string &in, 86 std::vector<std::string> *vec); 87 88 DISALLOW_COPY_AND_ASSIGN(StringHelper); 89 }; 90 91 } // namespace android 92 93 #endif // STRING_HELPER_H_ 94 95