pdal::IStream
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class IStream
Stream wrapper for input of binary data.
Subclassed by pdal::IBeStream, pdal::ILeStream, pdal::ISwitchableStream
Public Functions
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inline IStream()
Default constructor.
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inline IStream(const std::string &filename)
Construct an IStream from a filename.
- Parameters
filename – File from which to read.
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inline IStream(std::istream *stream)
Construct an IStream from an input stream pointer.
- Parameters
stream – Stream from which to read.
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inline ~IStream()
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inline int open(const std::string &filename)
Open a file to extract.
- Parameters
filename – Filename.
- Returns
-1 if a stream is already assigned, 0 otherwise.
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inline void close()
Close the underlying stream.
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inline operator bool()
Return the state of the stream.
- Returns
The state of the underlying stream.
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inline void seek(std::streampos pos)
Seek to a position in the underlying stream.
- Parameters
pos – Position to seek to,
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inline void seek(std::streampos off, std::ios_base::seekdir way)
Seek to an offset from a specified position.
- Parameters
off – Offset.
way – Absolute position for offset (beg, end or cur)
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inline void skip(std::streamoff offset)
Skip relative to the current position.
- Parameters
offset – Offset from the current position.
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inline std::streampos position() const
Determine the position of the get pointer.
- Returns
Current get position.
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inline bool good() const
Determine if the underlying stream is good.
- Returns
Whether the underlying stream is good.
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inline std::istream *stream()
Fetch a pointer to the underlying stream.
- Returns
Pointer to the underlying stream.
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inline void pushStream(std::istream *strm)
Temporarily push a stream to read from.
- Parameters
strm – New stream to read from.
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inline std::istream *popStream()
Pop the current stream and return it.
The last stream on the stack cannot be popped.
- Returns
Pointer to the popped stream.
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inline void get(std::string &s, size_t size)
Fetch data from the stream into a string.
NOTE - Stops when a null byte is encountered. Use a buffer/vector reader to read data with embedded nulls.
- Parameters
s – String to fill.
size – Maximum number of bytes to extract.
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inline void get(std::vector<char> &buf)
Fetch data from the stream into a vector of char.
- Parameters
buf – Buffer to fill.
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inline void get(std::vector<unsigned char> &buf)
Fetch data from the stream into a vector of unsigned char.
- Parameters
buf – Buffer to fill.
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inline void get(char *buf, size_t size)
Fetch data from the stream into the specified buffer of char.
- Parameters
buf – Buffer to fill.
size – Number of bytes to extract.
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inline void get(unsigned char *buf, size_t size)
Fetch data from the stream into the specified buffer of unsigned char.
- Parameters
buf – Buffer to fill.
size – Number of bytes to extract.
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inline IStream()