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author | Matthias Schiffer <mschiffer@universe-factory.net> | 2015-02-01 00:21:17 +0100 |
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committer | Matthias Schiffer <mschiffer@universe-factory.net> | 2015-02-01 00:27:01 +0100 |
commit | cbe64618821a0ae9f1901ce1a4a3893d939fdc32 (patch) | |
tree | 6a8341bdd90623817c26b2707df98910dd6a9e29 /src/Buffer.hpp | |
parent | 1e74afda41658ad38cbf0bd65847571861237cb5 (diff) | |
download | MinedMap-cbe64618821a0ae9f1901ce1a4a3893d939fdc32.tar MinedMap-cbe64618821a0ae9f1901ce1a4a3893d939fdc32.zip |
Implement most of the chunk format
Diffstat (limited to 'src/Buffer.hpp')
-rw-r--r-- | src/Buffer.hpp | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/Buffer.hpp b/src/Buffer.hpp new file mode 100644 index 0000000..9af622d --- /dev/null +++ b/src/Buffer.hpp @@ -0,0 +1,63 @@ +/* + Copyright (c) 2015, Matthias Schiffer <mschiffer@universe-factory.net> + All rights reserved. + + 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. + + 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. +*/ + + +#pragma once + +#include <cstdint> +#include <stdexcept> +#include <string> + + +namespace MinedMap { + +class Buffer { +private: + const uint8_t *data; + size_t len; + +public: + Buffer(const uint8_t *data0, size_t len0) : data(data0), len(len0) {} + + uint8_t get() { + if (!len) + throw std::runtime_error("Buffer::get(): buffer underrun"); + + data++; + len--; + return data[-1]; + } + + std::string getString(size_t n) { + if (n > len) + throw std::runtime_error("Buffer::get(): buffer underrun"); + + data += n; + len -= n; + return std::string(reinterpret_cast<const char *>(data - n), n); + } +}; + +} |