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template<class T , size_t N> |
errno_t | Init (const T(&buf)[N]) noexcept |
| Initializes MemoryInputStream and makes it available for use. More...
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errno_t | Init (const void *buf, size_t n) noexcept |
| Initializes MemoryInputStream and makes it available for use. More...
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| MemoryInputStream () noexcept |
| Instantiates the object with default parameters (default constructor). You must call the Init function before using this function.
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virtual | ~MemoryInputStream () noexcept override |
| Destructor.
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template<class T , size_t N> |
| MemoryInputStream (const T(&buf)[N]) noexcept |
| Constructs and initializes MemoryInputStream . More...
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| MemoryInputStream (const void *buf, size_t n) noexcept |
| Constructs and initializes MemoryInputStream . More...
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errno_t | GetErrorValue () const noexcept |
| Gets the error value. More...
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size_t | Pos () const noexcept |
| Returns the current position in the stream. More...
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uint64_t | Pos64 () const noexcept |
| Returns the current position in the stream as a 64-bit value. More...
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bool | IsEos () noexcept |
| Returns true if the stream is finished being read through to the end. If the stream has not been read through to the end, or if an error occurs, the function returns false . More...
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int | Read () noexcept |
| Reads one byte of data from the stream. More...
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NLIB_CHECK_RESULT int | Peek () noexcept |
| Reads the next byte without consuming the stream. More...
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size_t | Skip (size_t nbytes) noexcept |
| Skips over the number of bytes specified by nBytes. More...
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size_t | Read (void *ptr, size_t nbytes) noexcept |
| Reads the number of bytes of data specified by nBytes into the memory region specified by ptr. More...
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bool | Close () noexcept |
| Closes the stream. Returns true if successful. More...
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| operator bool () const |
| Returns true if no internal error has occurred.
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constexpr | InputStream () noexcept |
| Instantiates the object. This function is called from the derived class.
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virtual | ~InputStream () noexcept |
| Destructor. This function is called from the derived class.
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The class for creating an input stream that makes use of memory.
- Description
- A memory region is allocated as a backing store by the user at initialization.
- The following sample code shows how to construct
MemoryInputStream
. using nexi::MemoryInputStream;
unsigned char buf[SIZE];
is3.Init(&buf[0], SIZE);
is4.Init(buf);
- The transition of the object state.
- The overview of the object state transitions is described below:
- Examples:
- exi/multithread/multithread.cpp, exi/script/script.cpp, exi/serializer/serializer.cpp, exi/simple1/simple1.cpp, exi/simple2/simple2.cpp, exi/textparser/textparser.cpp, misc/stringutils/stringutils.cpp, misc/usezlib/usezlib.cpp, msgpack/json/json.cpp, msgpack/msgpack2/msgpack2.cpp, and msgpack/usertype/usertype.cpp.
Definition at line 23 of file MemoryInputStream.h.