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Questions tagged [boost-iostreams]

Boost.Iostreams is a C++ framework for defining streams, stream buffers and I/O filters.

Boost.Iostreams has three aims:

  • To make it easy to create standard C++ streams and stream buffers for accessing new Sources and Sinks.
  • To provide a framework for defining Filters and attaching them to standard streams and stream buffers.
  • To provide a collection of ready-to-use Filters, Sources and Sinks.

For example, Boost.Iostreams can be used to create streams to access TCP connections or as a framework for cryptography and data compression. The library includes components for accessing memory-mapped files, for file access using operating system file descriptors, for code conversion, for text filtering with regular expressions, for line-ending conversion and for compression and decompression in the zlib, gzip and bzip2 formats.

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Boost.IOStreams: How to correctly redirect file streams with 'rdbuf'?

I cannot possibly find explanation for the following behavior: #include #include #include #include TEST_CASE(rdbuf) { { …
Alexander Shukaev
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Boost.IOStreams: 'file_descriptor_sink' accepts empty string as pathname; should I guard against that?

I develop a library that internally uses Boost.IOStreams. Recently, I hit an interesting corner case with file_descriptor_sink. It looks like doing file_descriptor_sink s(""); or file_descriptor_sink s; s.open(""); is perfectly valid and…
Alexander Shukaev
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Change boost_zlib DLL name when compiling iostreams library in Boost?

I'm compiling the iostreams library in Boost in Windows. It appears that it creates a boost_zlib*.dll file automatically. I want to create two versions of the iostreams .lib and .dll files with separate names for both 32 and 64 bits to put into the…
Ionian316
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How to declare an "implicit conversion" in a variadic template?

My aim is to send a data to several streams. It is possible by using boost::tee. But I want to write a wrapper with variadic template for using several streams. The problem is that I need an implicit convertation from descendant struct to ancestor…
ged
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how to open a boost iostream memory map for both read and write

I am newbie to boost::iostream memory mapped file and I am having some difficulties in understanding the classes. I would like my function to create a new memory map file for writing and reading. I was successful for the writing part but I don't…
Abruzzo Forte e Gentile
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C++11 boost::iostreams::filtering_stream deletion

I have some data that I want to format and output, either in raw text file or .gz compressed text file. Thus, I wanted to do something like this : shared_ptr file = make_shared(filename.c_str()); shared_ptr stream; if…
bomzh
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boost iostreaming filter gets empty values

I tried to build a stream buffer for reading and writing char* using boost::iostreams: class MemBuf : public std::streambuf { public: MemBuf(char* s, std::size_t n) { setg(s, s, (char*)s+ n); } }; reading works fine: char…
Steve
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Using boost::stream for more complex/structuered types then chars?

is it possible to use boost::iostreams for more complex / structured types? What I want to do is to stream images but they should have some annotations like width, height, color depth,... My first idea is to use a struct instead of an char or an…
Steve
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boost::iostreams reading from source device

I've been trying to get my head around the iostreams library by boost. But i cant really fully grasp the concepts. Say i have the following class: Pseudocode: The below code is only to illustrate the problem. Edit: removed the read code because it…
user2010820
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boost::iostreams::mapped_file file path issue

I ran into an issue using the mapped_file iostreams library of boost. boost documentation : mapped_file After reading through all the documentation and examples I could read, I still can't get the following piece of code to work . I assume that…
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