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author | Trygve Laugstøl <trygvis@inamo.no> | 2015-02-22 15:36:06 +0100 |
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committer | Trygve Laugstøl <trygvis@inamo.no> | 2015-02-22 15:36:06 +0100 |
commit | ba6324930118a62e05d3869f99543c4a7507f105 (patch) | |
tree | 8f23c2104c7d4338ef60f1097184b48a4d2849ed /include/ble/ByteBuffer.h | |
parent | e5b99b359cebd2145a891932686bb9cdab751809 (diff) | |
download | ble-toys-ba6324930118a62e05d3869f99543c4a7507f105.tar.gz ble-toys-ba6324930118a62e05d3869f99543c4a7507f105.tar.bz2 ble-toys-ba6324930118a62e05d3869f99543c4a7507f105.tar.xz ble-toys-ba6324930118a62e05d3869f99543c4a7507f105.zip |
o Splitting out public header files into it's own directory.
Diffstat (limited to 'include/ble/ByteBuffer.h')
-rw-r--r-- | include/ble/ByteBuffer.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/include/ble/ByteBuffer.h b/include/ble/ByteBuffer.h new file mode 100644 index 0000000..f884d6e --- /dev/null +++ b/include/ble/ByteBuffer.h @@ -0,0 +1,97 @@ +#ifndef BYTE_STREAM_WRAPPER_H +#define BYTE_STREAM_WRAPPER_H + +#include <cstdint> +#include <cstdlib> +#include <string> +#include <stdexcept> +#include <memory> + +class ByteBufferException : public std::runtime_error { +public: + ByteBufferException(std::string const &what) : std::runtime_error(what) { + } +}; + +class ByteBuffer { +public: + static ByteBuffer alloc(std::size_t capacity); + + ByteBuffer(const std::shared_ptr<uint8_t> bytes, size_t capacity); + + ByteBuffer(const std::shared_ptr<uint8_t> bytes, size_t capacity, size_t size); + + ByteBuffer(const std::shared_ptr<uint8_t> bytes, size_t capacity, size_t size, size_t zero); + + inline size_t getSize() const { + return end - zero; + } + + inline size_t getCapacity() const { + return capacity; + } + + inline size_t getCursor() const { + return ptr - zero; + } + + inline size_t getBytesLeft() const { + return end - ptr; + } + + inline void setCursor(size_t newCursor) { + ptr = (uint8_t *) &zero[newCursor]; + } + + inline void skip(size_t length) { + ptr += length; + } + + ByteBuffer &write8(uint8_t value); + + ByteBuffer &write16le(uint16_t value); + + /** + * Appends the entire buffer. Make a view if you want to write a part of it. + */ + ByteBuffer &write(const ByteBuffer &value); + + ByteBuffer &write(const uint8_t *bytes, size_t len); + + uint8_t get8(size_t index) const; + + uint8_t read8(); + + uint16_t read16le(); + + void copy(uint8_t *bytes, size_t length) const; + + /** + * Creates a view from cursor to size. + */ + ByteBuffer view() const; + + // TODO: should return const + ByteBuffer view(size_t length) const; + + std::string toString() const; + +private: + ByteBuffer(const std::shared_ptr<uint8_t> bytes, size_t capacity, const uint8_t *zero, const uint8_t *end); + + ByteBuffer view(uint8_t *ptr, const uint8_t *end) const; + + void checkAndUpdateEnd(size_t count); + + void assertCanAccessRelative(size_t diff) const; + + void assertCanAccessIndex(uint8_t *p) const; + + const std::shared_ptr<uint8_t> bytes; + const size_t capacity; + const uint8_t *zero; + const uint8_t *end; + uint8_t *ptr; +}; + +#endif |