| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License.. |
| |
| use std::vec::Vec; |
| |
| pub fn hex_to_bytes(hex_string: &str) -> Vec<u8> { |
| let input_chars: Vec<_> = hex_string.chars().collect(); |
| |
| input_chars |
| .chunks(2) |
| .map(|chunk| { |
| let first_byte = chunk[0].to_digit(16).unwrap(); |
| let second_byte = chunk[1].to_digit(16).unwrap(); |
| ((first_byte << 4) | second_byte) as u8 |
| }) |
| .collect() |
| } |
