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template<typename AsyncReadStream, typename Allocator, typename ReadHandler> | |
void | asio::async_read_until (AsyncReadStream &s, asio::basic_streambuf< Allocator > &b, char delim, ReadHandler handler) |
Start an asynchronous operation to read data into a streambuf until a delimiter is encountered. | |
template<typename AsyncReadStream, typename Allocator, typename ReadHandler> | |
void | asio::async_read_until (AsyncReadStream &s, asio::basic_streambuf< Allocator > &b, const std::string &delim, ReadHandler handler) |
Start an asynchronous operation to read data into a streambuf until a delimiter is encountered. | |
template<typename AsyncReadStream, typename Allocator, typename ReadHandler> | |
void | asio::async_read_until (AsyncReadStream &s, asio::basic_streambuf< Allocator > &b, const boost::regex &expr, ReadHandler handler) |
Start an asynchronous operation to read data into a streambuf until a regular expression is located. |
void asio::async_read_until | ( | AsyncReadStream & | s, | |
asio::basic_streambuf< Allocator > & | b, | |||
char | delim, | |||
ReadHandler | handler | |||
) |
Start an asynchronous operation to read data into a streambuf until a delimiter is encountered.
This function is used to asynchronously read data into the specified streambuf until the streambuf's get area contains the specified delimiter. The function call always returns immediately. The asynchronous operation will continue until one of the following conditions is true:
s | The stream from which the data is to be read. The type must support the AsyncReadStream concept. | |
b | A streambuf object into which the data will be read. Ownership of the streambuf is retained by the caller, which must guarantee that it remains valid until the handler is called. | |
delim | The delimiter character. | |
handler | The handler to be called when the read operation completes. Copies will be made of the handler as required. The function signature of the handler must be: void handler( const asio::error_code& error, // Result of operation. std::size_t bytes_transferred // The number of bytes in the // streambuf's get area up to // and including the delimiter. // 0 if an error occurred. ); |
asio::streambuf b; ... void handler(const asio::error_code& e, std::size_t size) { if (!e) { std::istream is(&b); std::string line; std::getline(is, line); ... } } ... asio::async_read_until(s, b, '\n', handler);
void asio::async_read_until | ( | AsyncReadStream & | s, | |
asio::basic_streambuf< Allocator > & | b, | |||
const std::string & | delim, | |||
ReadHandler | handler | |||
) |
Start an asynchronous operation to read data into a streambuf until a delimiter is encountered.
This function is used to asynchronously read data into the specified streambuf until the streambuf's get area contains the specified delimiter. The function call always returns immediately. The asynchronous operation will continue until one of the following conditions is true:
s | The stream from which the data is to be read. The type must support the AsyncReadStream concept. | |
b | A streambuf object into which the data will be read. Ownership of the streambuf is retained by the caller, which must guarantee that it remains valid until the handler is called. | |
delim | The delimiter string. | |
handler | The handler to be called when the read operation completes. Copies will be made of the handler as required. The function signature of the handler must be: void handler( const asio::error_code& error, // Result of operation. std::size_t bytes_transferred // The number of bytes in the // streambuf's get area up to // and including the delimiter. // 0 if an error occurred. ); |
asio::streambuf b; ... void handler(const asio::error_code& e, std::size_t size) { if (!e) { std::istream is(&b); std::string line; std::getline(is, line); ... } } ... asio::async_read_until(s, b, "\r\n", handler);
void asio::async_read_until | ( | AsyncReadStream & | s, | |
asio::basic_streambuf< Allocator > & | b, | |||
const boost::regex & | expr, | |||
ReadHandler | handler | |||
) |
Start an asynchronous operation to read data into a streambuf until a regular expression is located.
This function is used to asynchronously read data into the specified streambuf until the streambuf's get area contains some data that matches a regular expression. The function call always returns immediately. The asynchronous operation will continue until one of the following conditions is true:
s | The stream from which the data is to be read. The type must support the AsyncReadStream concept. | |
b | A streambuf object into which the data will be read. Ownership of the streambuf is retained by the caller, which must guarantee that it remains valid until the handler is called. | |
expr | The regular expression. | |
handler | The handler to be called when the read operation completes. Copies will be made of the handler as required. The function signature of the handler must be: void handler( const asio::error_code& error, // Result of operation. std::size_t bytes_transferred // The number of bytes in the // streambuf's get area up to // and including the substring // that matches the regular. // expression. 0 if an error // occurred. ); |
asio::streambuf b; ... void handler(const asio::error_code& e, std::size_t size) { if (!e) { std::istream is(&b); std::string line; std::getline(is, line); ... } } ... asio::async_read_until(s, b, boost::regex("\r\n"), handler);