| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef QUICHE_COMMON_QUICHE_TEXT_UTILS_H_ |
| #define QUICHE_COMMON_QUICHE_TEXT_UTILS_H_ |
| |
| #include <optional> |
| #include <string> |
| |
| #include "absl/hash/hash.h" |
| #include "absl/strings/ascii.h" |
| #include "absl/strings/escaping.h" |
| #include "absl/strings/match.h" |
| #include "absl/strings/string_view.h" |
| #include "quiche/common/platform/api/quiche_export.h" |
| |
| namespace quiche { |
| |
| struct QUICHE_EXPORT StringPieceCaseHash { |
| size_t operator()(absl::string_view data) const { |
| std::string lower = absl::AsciiStrToLower(data); |
| absl::Hash<absl::string_view> hasher; |
| return hasher(lower); |
| } |
| }; |
| |
| struct QUICHE_EXPORT StringPieceCaseEqual { |
| bool operator()(absl::string_view piece1, absl::string_view piece2) const { |
| return absl::EqualsIgnoreCase(piece1, piece2); |
| } |
| }; |
| |
| // Various utilities for manipulating text. |
| class QUICHE_EXPORT QuicheTextUtils { |
| public: |
| // Returns a new string in which |data| has been converted to lower case. |
| static std::string ToLower(absl::string_view data) { |
| return absl::AsciiStrToLower(data); |
| } |
| |
| // Removes leading and trailing whitespace from |data|. |
| static void RemoveLeadingAndTrailingWhitespace(absl::string_view* data) { |
| *data = absl::StripAsciiWhitespace(*data); |
| } |
| |
| // Base64 encodes with no padding |data_len| bytes of |data| into |output|. |
| static void Base64Encode(const uint8_t* data, size_t data_len, |
| std::string* output); |
| |
| // Decodes a base64-encoded |input|. Returns nullopt when the input is |
| // invalid. |
| static std::optional<std::string> Base64Decode(absl::string_view input); |
| |
| // Returns a string containing hex and ASCII representations of |binary|, |
| // side-by-side in the style of hexdump. Non-printable characters will be |
| // printed as '.' in the ASCII output. |
| // For example, given the input "Hello, QUIC!\01\02\03\04", returns: |
| // "0x0000: 4865 6c6c 6f2c 2051 5549 4321 0102 0304 Hello,.QUIC!...." |
| static std::string HexDump(absl::string_view binary_data); |
| |
| // Returns true if |data| contains any uppercase characters. |
| static bool ContainsUpperCase(absl::string_view data) { |
| return std::any_of(data.begin(), data.end(), absl::ascii_isupper); |
| } |
| |
| // Returns true if |data| contains only decimal digits. |
| static bool IsAllDigits(absl::string_view data) { |
| return std::all_of(data.begin(), data.end(), absl::ascii_isdigit); |
| } |
| }; |
| |
| } // namespace quiche |
| |
| #endif // QUICHE_COMMON_QUICHE_TEXT_UTILS_H_ |