diff options
Diffstat (limited to 'depends/classparser/src/membuffer.h')
-rw-r--r-- | depends/classparser/src/membuffer.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/depends/classparser/src/membuffer.h b/depends/classparser/src/membuffer.h new file mode 100644 index 00000000..2ea3a69b --- /dev/null +++ b/depends/classparser/src/membuffer.h @@ -0,0 +1,64 @@ +#pragma once +#include <stdint.h> +#include <string> +#include <vector> +#include <exception> +#include "javaendian.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; + }; +} |