// Copyright 2023 The Dawn & Tint Authors // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are met: // // 1. Redistributions of source code must retain the above copyright notice, this // list of conditions and the following disclaimer. // // 2. Redistributions in binary form must reproduce the above copyright notice, // this list of conditions and the following disclaimer in the documentation // and/or other materials provided with the distribution. // // 3. Neither the name of the copyright holder nor the names of its // contributors may be used to endorse or promote products derived from // this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #ifndef SRC_TINT_UTILS_TEXT_BASE64_H_ #define SRC_TINT_UTILS_TEXT_BASE64_H_ #include <cstdint> #include <optional> #include "src/tint/utils/containers/vector.h" namespace tint { /// Decodes a byte from a base64 encoded character /// @param c the character to decode /// @return the decoded value, or std::nullopt if the character is padding ('=') or an invalid /// character. inline std::optional<uint8_t> DecodeBase64(char c) { … } /// DecodeBase64FromComments parses all the comments from the WGSL source string as a base64 byte /// stream. Non-base64 characters are skipped /// @param wgsl the WGSL source /// @return the base64 decoded bytes Vector<std::byte, 0> DecodeBase64FromComments(std::string_view wgsl); } // namespace tint #endif // SRC_TINT_UTILS_TEXT_BASE64_H_