1 // Copyright 2022 The Chromium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BSSL_PKI_STRING_UTIL_H_ 6 #define BSSL_PKI_STRING_UTIL_H_ 7 8 #include "fillins/openssl_util.h" 9 10 11 #include <stdint.h> 12 13 #include <cstdint> 14 #include <string_view> 15 #include <vector> 16 17 namespace bssl::string_util { 18 19 // Returns true if the characters in |str| are all ASCII, false otherwise. 20 OPENSSL_EXPORT bool IsAscii(std::string_view str); 21 22 // Compares |str1| and |str2| ASCII case insensitively (independent of locale). 23 // Returns true if |str1| and |str2| match. 24 OPENSSL_EXPORT bool IsEqualNoCase(std::string_view str1, 25 std::string_view str2); 26 27 // Compares |str1| and |prefix| ASCII case insensitively (independent of 28 // locale). Returns true if |str1| starts with |prefix|. 29 OPENSSL_EXPORT bool StartsWithNoCase(std::string_view str, 30 std::string_view prefix); 31 32 // Compares |str1| and |suffix| ASCII case insensitively (independent of 33 // locale). Returns true if |str1| starts with |suffix|. 34 OPENSSL_EXPORT bool EndsWithNoCase(std::string_view str, 35 std::string_view suffix); 36 37 // Finds and replaces all occurrences of |find| of non zero length with 38 // |replace| in |str|, returning the result. 39 OPENSSL_EXPORT std::string FindAndReplace(std::string_view str, 40 std::string_view find, 41 std::string_view replace); 42 43 // TODO(bbe) transition below to c++20 44 // Compares |str1| and |prefix|. Returns true if |str1| starts with |prefix|. 45 OPENSSL_EXPORT bool StartsWith(std::string_view str, 46 std::string_view prefix); 47 48 // TODO(bbe) transition below to c++20 49 // Compares |str1| and |suffix|. Returns true if |str1| ends with |suffix|. 50 OPENSSL_EXPORT bool EndsWith(std::string_view str, std::string_view suffix); 51 52 // Returns a hexadecimal string encoding |data| of length |length|. 53 OPENSSL_EXPORT std::string HexEncode(const uint8_t* data, size_t length); 54 55 // Returns a decimal string representation of |i|. 56 OPENSSL_EXPORT std::string NumberToDecimalString(int i); 57 58 // Splits |str| on |split_char| returning the list of resulting strings. 59 OPENSSL_EXPORT std::vector<std::string_view> SplitString( 60 std::string_view str, 61 char split_char); 62 63 } // namespace bssl::string_util 64 65 #endif // BSSL_PKI_STRING_UTIL_H_ 66