e92c311354
If it's useful to have contains() to tell you whether incoming data contains a particular substring, and if it's useful for contains() and peek() to accept an offset within that data, then it's useful to allow you to get the offset of a desired substring within that data. But of course a find() returning offset needs something like std::string::npos for "not found"; borrow that convention. Support both find(const std::string&) and find(char); the latter permits a more efficient implementation. In fact, make find(string) recognize a string of length 1 and leverage the find(char) implementation. Given that, reimplement contains(mumble) as shorthand for find(mumble) != npos. Implement find() overloads using std::search() and std::find() on boost::asio::streambuf character iterators, rather than copying to std::string and then using string search like previous contains() implementation. Reimplement WritePipeImpl::tick() and ReadPipeImpl::tick() to write/read directly from/to boost::asio::streambuf data, instead of copying to/from a temporary flat buffer. As long as ReadPipeImpl::tick() keeps successfully filling buffers, keep reading. Previous implementation would only handle a long child write over successive tick() calls. Stop on read error or when we come up short. |
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