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1865427f75
This is a significant milestone; now the Rust branch matches the C++ branch's features. In the process, I switched from using serde_derive (which requires nightly Rust) to serde_codegen (which does not). It was easier than I thought it'd be. I'm getting close to no longer requiring nightly Rust.
42 lines
2.0 KiB
Rust
42 lines
2.0 KiB
Rust
// This file is part of Moonfire NVR, a security camera digital video recorder.
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// Copyright (C) 2016 Scott Lamb <slamb@slamb.org>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// In addition, as a special exception, the copyright holders give
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// permission to link the code of portions of this program with the
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// OpenSSL library under certain conditions as described in each
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// individual source file, and distribute linked combinations including
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// the two.
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//
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// You must obey the GNU General Public License in all respects for all
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// of the code used other than OpenSSL. If you modify file(s) with this
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// exception, you may extend this exception to your version of the
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// file(s), but you are not obligated to do so. If you do not wish to do
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// so, delete this exception statement from your version. If you delete
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// this exception statement from all source files in the program, then
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// also delete it here.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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/// Returns a hex-encoded version of the input.
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pub fn hex(raw: &[u8]) -> String {
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const HEX_CHARS: [u8; 16] = [b'0', b'1', b'2', b'3', b'4', b'5', b'6', b'7',
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b'8', b'9', b'a', b'b', b'c', b'd', b'e', b'f'];
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let mut hex = Vec::with_capacity(2 * raw.len());
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for b in raw {
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hex.push(HEX_CHARS[((b & 0xf0) >> 4) as usize]);
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hex.push(HEX_CHARS[( b & 0x0f ) as usize]);
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}
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unsafe { String::from_utf8_unchecked(hex) }
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}
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