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author | Petr Mrázek <peterix@gmail.com> | 2013-01-11 02:25:40 +0100 |
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committer | Petr Mrázek <peterix@gmail.com> | 2013-01-11 02:25:40 +0100 |
commit | b1d00fce8da901b31fa52ea59b4bc3c8edb9d9cc (patch) | |
tree | f7c909b4080e6d1868e601609741450330dc9a1e /java/membuffer.h | |
parent | d6d5c86a736537828a59ddc6389d5d0490942f8c (diff) | |
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CMake build system, big pile of libs: bspatch, quazip, java, the launcher
Diffstat (limited to 'java/membuffer.h')
-rw-r--r-- | java/membuffer.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/java/membuffer.h b/java/membuffer.h new file mode 100644 index 00000000..48304b9f --- /dev/null +++ b/java/membuffer.h @@ -0,0 +1,64 @@ +#pragma once +#include <stdint.h> +#include <string> +#include <vector> +#include <exception> +#include "endian.h" + +namespace util +{ + class membuffer + { + public: + membuffer(char * buffer, std::size_t size) + { + current = start = buffer; + end = start + size; + } + ~membuffer() + { + // maybe? possibly? left out to avoid confusion. for now. + //delete start; + } + /** + * Read some value. That's all ;) + */ + template <class T> + void read(T& val) + { + val = *(T *)current; + current += sizeof(T); + } + /** + * Read a big-endian number + * valid for 2-byte, 4-byte and 8-byte variables + */ + template <class T> + void read_be(T& val) + { + val = util::bigswap(*(T *)current); + current += sizeof(T); + } + /** + * Read a string in the format: + * 2B length (big endian, unsigned) + * length bytes data + */ + void read_jstr(std::string & str) + { + uint16_t length = 0; + read_be(length); + str.append(current,length); + current += length; + } + /** + * Skip N bytes + */ + void skip (std::size_t N) + { + current += N; + } + private: + char * start, *end, *current; + }; +} |