diff --git a/Makefile b/Makefile index 914dad5..c4c5448 100644 --- a/Makefile +++ b/Makefile @@ -1,10 +1,9 @@ -# ash_gti's dumb downed makefile so I can more easily test stuff +# # ash_gti's dumb downed makefile so I can more easily test stuff # CXX=clang++ -# CXXFLAGS=-g -I./include +# CXXFLAGS=-g -I./include -ferror-limit=5 -O3 -Wall -Weffc++ -pedantic -pedantic-errors -Wextra -Wall -Waggregate-return -Wcast-align -Wcast-qual -Wchar-subscripts -Wcomment -Wconversion -Wdisabled-optimization -Wfloat-equal -Wformat -Wformat=2 -Wformat-nonliteral -Wformat-security -Wformat-y2k -Wimplicit -Wimport -Winit-self -Winline -Winvalid-pch -Wlong-long -Wmissing-braces -Wmissing-field-initializers -Wmissing-format-attribute -Wmissing-include-dirs -Wmissing-noreturn -Wpacked -Wparentheses -Wpointer-arith -Wredundant-decls -Wreturn-type -Wsequence-point -Wshadow -Wsign-compare -Wstack-protector -Wstrict-aliasing -Wstrict-aliasing=2 -Wswitch -Wswitch-default -Wswitch-enum -Wtrigraphs -Wuninitialized -Wunknown-pragmas -Wunreachable-code -Wunused -Wunused-function -Wunused-label -Wunused-parameter -Wunused-value -Wunused-variable -Wvariadic-macros -Wvolatile-register-var -Wwrite-strings # # test: tests/serial_tests.o src/serial.o src/impl/unix.o # $(CXX) -o test tests/serial_tests.o src/serial.o src/impl/unix.o -# ifdef ROS_ROOT include $(shell rospack find mk)/cmake.mk else diff --git a/README.md b/README.md index ed820fe..201b165 100644 --- a/README.md +++ b/README.md @@ -49,13 +49,13 @@ Setup workspace (skip if you already have one): rosws init some_ros_workspace cd some_ros_workspace source setup.bash - + Add the rosinstall entry for this stack: - + echo "-git: {local-name: serial, uri: 'https://github.com/wjwwood/serial.git', version: 'master'}" >> .rosinstall - + Rerun rosinstall: - + rosinstall . source setup.bash diff --git a/include/serial/impl/unix.h b/include/serial/impl/unix.h index 0f1801a..1bb1eb3 100644 --- a/include/serial/impl/unix.h +++ b/include/serial/impl/unix.h @@ -8,7 +8,7 @@ * * The MIT License * - * Copyright (c) 2011 William Woodall + * Copyright (c) 2011 William Woodall, John Harrison * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), @@ -30,7 +30,9 @@ * * \section DESCRIPTION * - * This provides a unix based pimpl for the Serial class. + * This provides a unix based pimpl for the Serial class. This implementation is + * based off termios.h and uses select for multiplexing the IO ports. + * */ #ifndef SERIAL_IMPL_UNIX_H @@ -42,6 +44,7 @@ namespace serial { using std::string; using std::invalid_argument; + using serial::SerialExecption; using serial::IOException; @@ -57,47 +60,98 @@ public: virtual ~SerialImpl (); - void open (); - void close () ; - bool isOpen () const; + void + open (); - size_t available (); - string read (size_t size = 1); - size_t write (const string &data); + void + close (); - void flush (); - void flushInput (); - void flushOutput (); + bool + isOpen () const; - void sendBreak(int duration); - void setBreak(bool level); - void setRTS(bool level); - void setDTR(bool level); - bool getCTS(); - bool getDSR(); - bool getRI(); - bool getCD(); + size_t + available (); - void setPort (const string &port); - string getPort () const; + size_t + read (char* buf, size_t size = 1); - void setTimeout (long timeout); - long getTimeout () const; + size_t + write (const string &data); - void setBaudrate (unsigned long baudrate); - unsigned long getBaudrate () const; + void + flush (); - void setBytesize (bytesize_t bytesize); - bytesize_t getBytesize () const; + void + flushInput (); - void setParity (parity_t parity); - parity_t getParity () const; + void + flushOutput (); - void setStopbits (stopbits_t stopbits); - stopbits_t getStopbits () const; + void + sendBreak(int duration); - void setFlowcontrol (flowcontrol_t flowcontrol); - flowcontrol_t getFlowcontrol () const; + void + setBreak(bool level); + + void + setRTS(bool level); + + void + setDTR(bool level); + + bool + getCTS(); + + bool + getDSR(); + + bool + getRI(); + + bool + getCD(); + + void + setPort (const string &port); + + string + getPort () const; + + void + setTimeout (long timeout); + + long + getTimeout () const; + + void + setBaudrate (unsigned long baudrate); + + unsigned long + getBaudrate () const; + + void + setBytesize (bytesize_t bytesize); + + bytesize_t + getBytesize () const; + + void + setParity (parity_t parity); + + parity_t + getParity () const; + + void + setStopbits (stopbits_t stopbits); + + stopbits_t + getStopbits () const; + + void + setFlowcontrol (flowcontrol_t flowcontrol); + + flowcontrol_t + getFlowcontrol () const; protected: void reconfigurePort (); @@ -106,17 +160,13 @@ private: string port_; // Path to the file descriptor int fd_; // The current file descriptor - int interCharTimeout_; - int writeTimeout_; bool isOpen_; bool xonxoff_; bool rtscts_; - - char ___; // lol padding long timeout_; // Timeout for read operations unsigned long baudrate_; // Baudrate - + parity_t parity_; // Parity bytesize_t bytesize_; // Size of the bytes stopbits_t stopbits_; // Stop Bits diff --git a/include/serial/serial.h b/include/serial/serial.h index d37fb96..473907e 100644 --- a/include/serial/serial.h +++ b/include/serial/serial.h @@ -10,7 +10,7 @@ * * Copyright (c) 2011 William Woodall * - * Permission is hereby granted, free of charge, to any person obtaining a + * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, @@ -24,8 +24,8 @@ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * \section DESCRIPTION @@ -124,35 +124,38 @@ class Serial { public: /*! * Constructor, creates a SerialPortBoost object and opens the port. - * + * * \param port A std::string containing the address of the serial port, * which would be something like 'COM1' on Windows and '/dev/ttyS0' * on Linux. - * + * * \param baudrate An integer that represents the buadrate - * - * \param timeout A long that represents the time (in milliseconds) until a + * + * \param timeout A long that represents the time (in milliseconds) until a * timeout on reads occur. Setting this to zero (0) will cause reading to * be non-blocking, i.e. the available data will be returned immediately, * but it will not block to wait for more. Setting this to a number less * than zero (-1) will result in infinite blocking behaviour, i.e. the * serial port will block until either size bytes have been read or an * exception has occured. - * - * \param bytesize Size of each byte in the serial transmission of data, - * default is EIGHTBITS, possible values are: FIVEBITS, SIXBITS, SEVENBITS, + * + * \param bytesize Size of each byte in the serial transmission of data, + * default is EIGHTBITS, possible values are: FIVEBITS, SIXBITS, SEVENBITS, * EIGHTBITS - * + * * \param parity Method of parity, default is PARITY_NONE, possible values * are: PARITY_NONE, PARITY_ODD, PARITY_EVEN - * - * \param stopbits Number of stop bits used, default is STOPBITS_ONE, + * + * \param stopbits Number of stop bits used, default is STOPBITS_ONE, * possible values are: STOPBITS_ONE, STOPBITS_ONE_POINT_FIVE, STOPBITS_TWO - * - * \param flowcontrol Type of flowcontrol used, default is - * FLOWCONTROL_NONE, possible values are: FLOWCONTROL_NONE, + * + * \param flowcontrol Type of flowcontrol used, default is + * FLOWCONTROL_NONE, possible values are: FLOWCONTROL_NONE, * FLOWCONTROL_SOFTWARE, FLOWCONTROL_HARDWARE - * + * + * \param buffer_size The maximum size of the internal buffer, defaults + * to 256 bytes (2^8). + * * \throw PortNotOpenedException */ Serial (const std::string &port = "", @@ -161,7 +164,8 @@ public: bytesize_t bytesize = EIGHTBITS, parity_t parity = PARITY_NONE, stopbits_t stopbits = STOPBITS_ONE, - flowcontrol_t flowcontrol = FLOWCONTROL_NONE); + flowcontrol_t flowcontrol = FLOWCONTROL_NONE, + const size_t buffer_size = 256); /*! Destructor */ virtual ~Serial (); @@ -169,12 +173,12 @@ public: /*! * Opens the serial port as long as the portname is set and the port isn't * alreay open. - * - * If the port is provided to the constructor then an explicit call to open + * + * If the port is provided to the constructor then an explicit call to open * is not needed. - * + * * \see Serial::Serial - * + * * \throw std::invalid_argument * \throw serial::SerialExecption * \throw serial::IOException @@ -183,7 +187,7 @@ public: open (); /*! Gets the open status of the serial port. - * + * * \return Returns true if the port is open, false otherwise. */ bool @@ -198,70 +202,48 @@ public: available(); /*! Read a given amount of bytes from the serial port. - * + * * If a timeout is set it may return less characters than requested. With * no timeout it will block until the requested number of bytes have been * read or until an exception occurs. - * - * \param buffer An unsigned char array large enough to hold incoming data - * up to the requested size. - * + * * \param size A size_t defining how many bytes to be read. - * - * \return A size_t representing the number of bytes actually read. - */ - //size_t - //read (unsigned char* buffer, size_t size = 1); - - /*! Read a given amount of bytes from the serial port. - * - * If a timeout is set it may return less characters than requested. With - * no timeout it will block until the requested number of bytes have been - * read or until an exception occurs. - * - * \param size A size_t defining how many bytes to be read. - * + * * \return A std::string containing the data read. */ std::string read (size_t size = 1); - std::string readline(size_t size = std::numeric_limits::max(), - std::string eol = "\n"); - - std::vector readlines(std::string eol = "\n"); - - /*! Read a given amount of bytes from the serial port. - * - * Reads into a std::string by reference rather than returning it. - * - * \param buffer A std::string reference for reading to. - * \param size A size_t defining how many bytes to be read. - * - * \return A size_t that represents how many bytes were read. - * - * \see Serial::read(size_t) + /*! Reads in a line or until a given delimiter has been processed + * + * Reads from the serial port until a single line has been read. + * + * \param size A maximum length of a line defaults to size_t::max() + * \param eol A string to match against for the EOL. + * + * \return A std::string containing the line. */ - //size_t - //read (std::string &buffer, size_t size = 1); + std::string + readline(size_t size = std::numeric_limits::max(), + std::string eol = "\n"); - /*! Write bytes from the data to the serial port by given length. - * - * \param data An unsigned char array containing data to be written to the - * serial port. - * - * \param length A size_t representing the number of bytes to be written. - * - * \return A size_t representing the number of bytes actually written. + /*! Reads in multiple lines until the serail port times out. + * + * This requires a timeout > 0 before it can be run. It will read until a + * timeout occurs and return a list of strings. + * + * \param eol A string to match against for the EOL. + * + * \return A vector containing the lines. */ - //size_t - //write (unsigned char* data, size_t length); + std::vector + readlines(std::string eol = "\n"); /*! Write a string to the serial port. - * - * \param data A const std::string reference containg the data to be written + * + * \param data A const std::string reference containg the data to be written * to the serial port. - * + * * \return A size_t representing the number of bytes actually written to * the serial port. */ @@ -269,27 +251,27 @@ public: write (const std::string &data); /*! Sets the serial port identifier. - * - * \param port A const std::string reference containing the address of the - * serial port, which would be something like 'COM1' on Windows and + * + * \param port A const std::string reference containing the address of the + * serial port, which would be something like 'COM1' on Windows and * '/dev/ttyS0' on Linux. - * + * * \throw InvalidConfigurationException */ void setPort (const std::string &port); /*! Gets the serial port identifier. - * + * * \see Serial::setPort - * + * * \throw InvalidConfigurationException */ std::string getPort () const; /*! Sets the timeout for reads in milliseconds. - * + * * \param timeout A long that represents the time (in milliseconds) until a * timeout on reads occur. Setting this to zero (0) will cause reading to be * non-blocking, i.e. the available data will be returned immediately, but it @@ -302,127 +284,151 @@ public: setTimeout (long timeout); /*! Gets the timeout for reads in seconds. - * + * * \see Serial::setTimeout */ long getTimeout () const; /*! Sets the baudrate for the serial port. - * + * * Possible baudrates depends on the system but some safe baudrates include: * 110, 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 56000, * 57600, 115200 * Some other baudrates that are supported by some comports: * 128000, 153600, 230400, 256000, 460800, 921600 - * + * * \param baudrate An integer that sets the baud rate for the serial port. - * + * * \throw InvalidConfigurationException */ void setBaudrate (unsigned long baudrate); /*! Gets the baudrate for the serial port. - * + * * \return An integer that sets the baud rate for the serial port. - * + * * \see Serial::setBaudrate - * + * * \throw InvalidConfigurationException */ unsigned long getBaudrate () const; /*! Sets the bytesize for the serial port. - * + * * \param bytesize Size of each byte in the serial transmission of data, * default is EIGHTBITS, possible values are: FIVEBITS, SIXBITS, SEVENBITS, * EIGHTBITS - * + * * \throw InvalidConfigurationException */ void setBytesize (bytesize_t bytesize); /*! Gets the bytesize for the serial port. - * + * * \see Serial::setBytesize - * + * * \throw InvalidConfigurationException */ bytesize_t getBytesize () const; /*! Sets the parity for the serial port. - * + * * \param parity Method of parity, default is PARITY_NONE, possible values * are: PARITY_NONE, PARITY_ODD, PARITY_EVEN - * + * * \throw InvalidConfigurationException */ void setParity (parity_t parity); /*! Gets the parity for the serial port. - * + * * \see Serial::setParity - * + * * \throw InvalidConfigurationException */ parity_t getParity () const; /*! Sets the stopbits for the serial port. - * + * * \param stopbits Number of stop bits used, default is STOPBITS_ONE, * possible values are: STOPBITS_ONE, STOPBITS_ONE_POINT_FIVE, STOPBITS_TWO - * + * * \throw InvalidConfigurationException */ void setStopbits (stopbits_t stopbits); /*! Gets the stopbits for the serial port. - * + * * \see Serial::setStopbits - * + * * \throw InvalidConfigurationException */ stopbits_t getStopbits () const; /*! Sets the flow control for the serial port. - * + * * \param flowcontrol Type of flowcontrol used, default is FLOWCONTROL_NONE, * possible values are: FLOWCONTROL_NONE, FLOWCONTROL_SOFTWARE, * FLOWCONTROL_HARDWARE - * + * * \throw InvalidConfigurationException */ void setFlowcontrol (flowcontrol_t flowcontrol); /*! Gets the flow control for the serial port. - * + * * \see Serial::setFlowcontrol - * + * * \throw InvalidConfigurationException */ flowcontrol_t getFlowcontrol () const; - void flush(); - void flushInput(); - void flushOutput(); - void sendBreak(int duration); - void setBreak(bool level = true); - void setRTS(bool level = true); - void setDTR(bool level = true); - bool getCTS(); - bool getDSR(); - bool getRI(); - bool getCD(); + /*! Flush the input and output buffers */ + void + flush (); + + /*! Flush only the input buffer */ + void + flushInput (); + + /*! Flush only the output buffer */ + void + flushOutput (); + + void + sendBreak (int duration); + + void + setBreak (bool level = true); + + void + setRTS (bool level = true); + + void + setDTR (bool level = true); + + bool + getCTS (); + + bool + getDSR (); + + bool + getRI (); + + bool + getCD (); private: // Disable copy constructors @@ -430,9 +436,12 @@ private: void operator=(const Serial&); const Serial& operator=(Serial); + const size_t buffer_size_; + char *read_cache_; //!< Cache for doing reads in chunks. + // Pimpl idiom, d_pointer class SerialImpl; - SerialImpl *pimpl; + SerialImpl *pimpl_; }; } // namespace serial diff --git a/include/serial/serial_listener.h b/include/serial/serial_listener.h index 938054e..543e29f 100644 --- a/include/serial/serial_listener.h +++ b/include/serial/serial_listener.h @@ -9,11 +9,11 @@ * * Copyright (c) 2011 William Woodall * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in @@ -23,14 +23,14 @@ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * \section DESCRIPTION * * This provides a class that allows for asynchronous serial port reading. - * + * */ #ifndef SERIAL_LISTENER_H @@ -53,14 +53,14 @@ namespace serial { /*! * This is an alias to boost::shared_ptr used for tokens. - * + * * This is the type used internally and is the type returned in a vector by * the tokenizer. The shared_ptr allows for the token to be stored and kept * around long enough to be used by the comparators and callbacks, but no * longer. This internal storage is passed as a const std::string reference * to callbacks, like the DataCallback function type, to prevent implicit * copying. - * + * * \see serial::TokenizerType, serial::SerialListener::setTokenizer */ typedef boost::shared_ptr TokenPtr; @@ -69,11 +69,11 @@ typedef boost::shared_ptr TokenPtr; * This is a general function type that is used as the callback prototype * for asynchronous functions like the default handler callback and the * listenFor callbacks. - * + * * The function takes a std::string reference and returns nothing, it is * simply passing the resulting line detected by the comparator to the user's * callback for processing. - * + * * \see SerialListener::listenFor, SerialListener::setDefaultHandler */ typedef boost::function DataCallback; @@ -81,11 +81,11 @@ typedef boost::function DataCallback; /*! * This is a general function type that is used as the comparator callback * prototpe for the listenFor* type functions. - * + * * The function takes a std::string reference and returns true if the string * matches what the comparator is looking for and false if it does not, unless * otherwise specified. - * + * * \see SerialListener::listenFor, SerialListener::listenForOnce */ typedef boost::function ComparatorType; @@ -115,30 +115,30 @@ TokenizerType; /*! * This function type describes the prototype for the exception callback. - * - * The function takes a std::exception reference and returns nothing. It is + * + * The function takes a std::exception reference and returns nothing. It is * called from the library when an exception occurs in a library thread. * This exposes these exceptions to the user so they can to error handling. - * + * * \see SerialListener::setExceptionHandler */ typedef boost::function ExceptionCallback; /*! * Represents a filter which new data is passed through. - * - * The filter consists of a comparator and a callback. The comparator takes a - * token and returns true if it matches, false if it doesn't. If a match - * occurs the serial listener will dispatch a call of the callback with the - * matched data in a another thread. The comparator should be as short as - * possible, but the callback can be longer since it is executed in a thread + * + * The filter consists of a comparator and a callback. The comparator takes a + * token and returns true if it matches, false if it doesn't. If a match + * occurs the serial listener will dispatch a call of the callback with the + * matched data in a another thread. The comparator should be as short as + * possible, but the callback can be longer since it is executed in a thread * or thread pool. - * - * \param comparator A ComparatorType that matches incoming data, returns true + * + * \param comparator A ComparatorType that matches incoming data, returns true * for a match, false othewise. - * + * * \param callback A DataCallback that gets called when a match occurs. - * + * * \see serial::ComparatorType, serial::DataCallback, serial::FilterPtr */ class Filter @@ -154,11 +154,11 @@ public: /*! * This is an alias to boost::shared_ptr used for tokens. - * + * * This is used internally and is returned from SerialListener::listenFor like * functions so that users can later remove those filters by passing the * FilterPtr. - * + * * \see serial::Filter, serial::SerialListener::listenFor, * serial::SerialListener::listenForOnce */ @@ -169,7 +169,7 @@ class BlockingFilter; /*! * Shared Pointer of BlockingFilter, returned by * SerialListener::createBlockingFilter. - * + * * \see serial::BlockingFilter, SerialListener::createBlockingFilter */ typedef boost::shared_ptr BlockingFilterPtr; @@ -179,16 +179,16 @@ class BufferedFilter; /*! * Shared Pointer of BufferedFilter, returned by * SerialListener::createBufferedFilter. - * + * * \see serial::BufferedFilter, SerialListener::createBufferedFilter */ typedef boost::shared_ptr BufferedFilterPtr; /*! * This is a general exception generated by the SerialListener class. - * + * * Check the SerialListenerException::what function for the cause. - * + * * \param e_what is a std::string that describes the cause of the error. */ class SerialListenerException : public std::exception { @@ -261,11 +261,11 @@ public: popped_value=the_queue.front(); the_queue.pop(); } - + size_t size() const { return the_queue.size(); } - + void cancel() { the_condition_variable.notify_one(); } @@ -298,14 +298,14 @@ public: /*! * Sets the tokenizer to be used when tokenizing the data into tokens. - * - * This function is given a std::string of data and is responsible for + * + * This function is given a std::string of data and is responsible for * tokenizing that data into a std::vector of data tokens. * The default tokenizer splits the data by the ascii return carriage. * The user can create their own tokenizer or use one of the default ones. - * + * * \param tokenizer Function for tokenizing the incoming data. - * + * * \see serial::TokenizerType, serial::delimeter_tokenizer */ void @@ -315,7 +315,7 @@ public: /*! * Sets the number of bytes to be read at a time by the listener. - * + * * \param chunk_size Number of bytes to be read at a time. */ void @@ -327,8 +327,8 @@ public: /*! * Starts a thread to listen for messages and process them through filters. - * - * \param serial_port Pointer to a serial::Serial object that is used to + * + * \param serial_port Pointer to a serial::Serial object that is used to * retrieve new data. */ void @@ -336,8 +336,8 @@ public: /*! * Stops the listening thread and blocks until it completely stops. - * - * This function also clears all of the active filters from listenFor and + * + * This function also clears all of the active filters from listenFor and * similar functions. */ void @@ -347,21 +347,21 @@ public: /*! * Creates a filter that calls a callback when the comparator returns true. - * + * * The user provides a comparator and a callback, and every time a line is * received the comparator is called and the comparator has to evaluate the * line and return true if it matches and false if it doesn't. If it does * match, the callback is called with the resulting line. - * + * * \param comparator This is a comparator for detecting if a line matches. * The comparartor receives a std::string reference and must return a true * if it matches and false if it doesn't. - * + * * \param callback This is the handler for when a match occurs. It is given * a std::string reference of the line that matched your comparator. - * + * * \return boost::shared_ptr so you can remove it later. - * + * * \see SerialListener::removeFilter */ FilterPtr @@ -369,21 +369,21 @@ public: /*! * Creates a BlockingFilter which blocks until the comparator returns true. - * + * * The user provides a comparator, and every time a line is * received the comparator is called and the comparator has to evaluate the * line and return true if it matches and false if it doesn't. If it does * match, any threads that have called BlockingFilter::wait will be * notified. The BlockingFilter will remove itself when its destructor is - * called, i.e. when it leaves the scope, so in those cases an explicit call + * called, i.e. when it leaves the scope, so in those cases an explicit call * to SerialListener::removeFilter is not needed. - * + * * \param comparator This is a comparator for detecting if a line matches. * The comparartor receives a std::string reference and must return a true * if it matches and false if it doesn't. - * + * * \return BlockingFilterPtr So you can call BlockingFilter::wait on it. - * + * * \see SerialListener::removeFilter, serial::BlockingFilter, * serial::BlockingFilterPtr */ @@ -392,24 +392,24 @@ public: /*! * Creates a BlockingFilter blocks until the comparator returns true. - * + * * The user provides a comparator, and every time a line is * received the comparator is called and the comparator has to evaluate the * line and return true if it matches and false if it doesn't. If it does * match, any threads that have called BlockingFilter::wait will be * notified. The BlockingFilter will remove itself when its destructor is - * called, i.e. when it leaves the scope, so in those cases an explicit call + * called, i.e. when it leaves the scope, so in those cases an explicit call * to SerialListener::removeFilter is not needed. - * + * * \param comparator This is a comparator for detecting if a line matches. * The comparartor receives a std::string reference and must return a true * if it matches and false if it doesn't. - * + * * \param buffer_size This is the number of tokens to be buffered by the * BufferedFilter, defaults to 1024. - * + * * \return BlockingFilter So you can call BlockingFilter::wait on it. - * + * * \see SerialListener::removeFilter, serial::BufferedFilter, * serial::BufferedFilterPtr */ @@ -418,9 +418,9 @@ public: /*! * Removes a filter by a given FilterPtr. - * + * * \param filter_ptr A shared pointer to the filter to be removed. - * + * * \see SerialListener::createFilter */ void @@ -428,11 +428,11 @@ public: /*! * Removes a BlockingFilter. - * + * * The BlockingFilter will remove itself if the destructor is called. - * + * * \param blocking_filter A BlockingFilter to be removed. - * + * * \see SerialListener::createBlockingFilter */ void @@ -440,11 +440,11 @@ public: /*! * Removes a BufferedFilter. - * + * * The BufferedFilter will remove itself if the destructor is called. - * + * * \param buffered_filter A BufferedFilter to be removed. - * + * * \see SerialListener::createBufferedFilter */ void @@ -478,7 +478,7 @@ setWarningHandler (ExceptionCallback exception_handler) { /*! * Sleeps for a given number of milliseconds. - * + * * \param milliseconds number of milliseconds to sleep. */ static void @@ -489,21 +489,21 @@ setWarningHandler (ExceptionCallback exception_handler) { /*! * This returns a tokenizer that splits on a given delimeter. - * - * The delimeter is passed into the function and a TokenizerType is returned + * + * The delimeter is passed into the function and a TokenizerType is returned * that can be passed to SerialListener::setTokenizer. - * + * * Example: *
    *   my_listener.setTokenizer(SerialListener::delimeter_tokenizer("\r"));
    * <\pre>
-   * 
-   * \param delimeter A std::string that is used as a delimeter when 
+   *
+   * \param delimeter A std::string that is used as a delimeter when
    * tokenizing data.
-   * 
-   * \return TokenizerType A tokenizer function type that can be passed to 
+   *
+   * \return TokenizerType A tokenizer function type that can be passed to
    * SerialListener::setTokenizer.
-   * 
+   *
    * \see SerialListener::setTokenizer, serial::TokenizerType
    */
   static TokenizerType
@@ -514,22 +514,22 @@ setWarningHandler (ExceptionCallback exception_handler) {
 
   /*!
    * This returns a comparator that matches only the exact string given.
-   * 
+   *
    * This can be used with listenFor or listenForOnce:
-   * 
+   *
    * Example:
    * 
    *   my_listener.listenFor(SerialListener::exactly("my_string"),
    *                         my_callback);
    * <\pre>
-   * 
-   * \param exact_str A std::string that is used as the exact string to match 
+   *
+   * \param exact_str A std::string that is used as the exact string to match
    * when comparing tokens for matching.
-   * 
-   * \return ComparatorType A comparator function type that can be passed to 
+   *
+   * \return ComparatorType A comparator function type that can be passed to
    * SerialListener::listenFor or SerialListener::listenForOnce.
    *
-   * \see SerialListener::listenFor, SerialListener::listenForOnce, 
+   * \see SerialListener::listenFor, SerialListener::listenForOnce,
    * serial::ComparatorType
    */
   static ComparatorType
@@ -539,21 +539,21 @@ setWarningHandler (ExceptionCallback exception_handler) {
 
   /*!
    * This returns a comparator that looks for a given prefix.
-   * 
+   *
    * This can be used with listenFor or listenForOnce:
-   * 
+   *
    * Example:
    * 
    *   my_listener.listenFor(SerialListener::startsWith("V="), my_callback);
    * <\pre>
-   * 
-   * \param prefix A std::string that is used as the prefix string to match 
+   *
+   * \param prefix A std::string that is used as the prefix string to match
    * when comparing tokens for matching.
-   * 
-   * \return ComparatorType A comparator function type that can be passed to 
+   *
+   * \return ComparatorType A comparator function type that can be passed to
    * SerialListener::listenFor or SerialListener::listenForOnce.
    *
-   * \see SerialListener::listenFor, SerialListener::listenForOnce, 
+   * \see SerialListener::listenFor, SerialListener::listenForOnce,
    * serial::ComparatorType
    */
   static ComparatorType
@@ -563,21 +563,21 @@ setWarningHandler (ExceptionCallback exception_handler) {
 
   /*!
    * This returns a comparator that looks for a given postfix.
-   * 
+   *
    * This can be used with listenFor or listenForOnce:
-   * 
+   *
    * Example:
    * 
    *   my_listener.listenFor(SerialListener::endsWith(";"), my_callback);
    * <\pre>
-   * 
-   * \param postfix A std::string that is used as the postfix string to match 
+   *
+   * \param postfix A std::string that is used as the postfix string to match
    * when comparing tokens for matching.
-   * 
-   * \return ComparatorType A comparator function type that can be passed to 
+   *
+   * \return ComparatorType A comparator function type that can be passed to
    * SerialListener::listenFor or SerialListener::listenForOnce.
    *
-   * \see SerialListener::listenFor, SerialListener::listenForOnce, 
+   * \see SerialListener::listenFor, SerialListener::listenForOnce,
    * serial::ComparatorType
    */
   static ComparatorType
@@ -587,22 +587,22 @@ setWarningHandler (ExceptionCallback exception_handler) {
 
   /*!
    * This returns a comparator that looks for a given substring in the token.
-   * 
+   *
    * This can be used with listenFor or listenForOnce:
-   * 
+   *
    * Example:
    * 
    *   my_listener.listenFor(SerialListener::contains("some string"),
    *                         my_callback);
    * <\pre>
-   * 
-   * \param substr A std::string that is used as the search substring to match 
+   *
+   * \param substr A std::string that is used as the search substring to match
    * when comparing tokens for matching.
-   * 
-   * \return ComparatorType A comparator function type that can be passed to 
+   *
+   * \return ComparatorType A comparator function type that can be passed to
    * SerialListener::listenFor or SerialListener::listenForOnce.
    *
-   * \see SerialListener::listenFor, SerialListener::listenForOnce, 
+   * \see SerialListener::listenFor, SerialListener::listenForOnce,
    * serial::ComparatorType
    */
   static ComparatorType
@@ -698,13 +698,13 @@ private:
 };
 
 /*!
- * This is the a filter that provides a wait function for blocking until a 
+ * This is the a filter that provides a wait function for blocking until a
  * match is found.
- * 
- * This should probably not be created manually, but instead should be 
+ *
+ * This should probably not be created manually, but instead should be
  * constructed using SerialListener::createBlockingFilter(ComparatorType)
  * function which returns a BlockingFilter instance.
- * 
+ *
  * \see serial::SerialListener::ComparatorType,
  * serial::SerialListener::createBlockingFilter
  */
@@ -726,9 +726,9 @@ public:
   /*!
    * Waits a given number of milliseconds or until a token is matched.  If a
    * token is matched it is returned, otherwise an empty string is returned.
-   * 
+   *
    * \param ms Time in milliseconds to wait on a new token.
-   * 
+   *
    * \return std::string token that was matched or "" if none were matched.
    */
  std::string wait(long ms) {
@@ -757,22 +757,22 @@ private:
  * This is the a filter that provides a wait function for blocking until a
  * match is found.  It will also buffer up to a given buffer size of tokens so
  * that they can be counted or accessed after they are matched by the filter.
- * 
- * This should probably not be created manually, but instead should be 
+ *
+ * This should probably not be created manually, but instead should be
  * constructed using SerialListener::createBufferedFilter(ComparatorType)
  * function which returns a BufferedFilter instance.
- * 
+ *
  * The internal buffer is a circular queue buffer, so when the buffer is full,
  * the oldest token is dropped and the new one is added.  Additionally, when
  * wait is a called the oldest available token is returned.
- * 
+ *
  * \see serial::SerialListener::ComparatorType,
  * serial::SerialListener::createBufferedFilter
  */
 class BufferedFilter
 {
 public:
-  BufferedFilter (ComparatorType comparator, size_t buffer_size, 
+  BufferedFilter (ComparatorType comparator, size_t buffer_size,
                   SerialListener &listener)
   : buffer_size_(buffer_size)
   {
@@ -788,14 +788,14 @@ public:
   }
 
   /*!
-   * Waits a given number of milliseconds or until a matched token is 
+   * Waits a given number of milliseconds or until a matched token is
    * available in the buffer.  If a token is matched it is returned, otherwise
    * an empty string is returned.
-   * 
-   * \param ms Time in milliseconds to wait on a new token.  If ms is set to 0 
-   * then it will try to get a new token if one is available but will not 
+   *
+   * \param ms Time in milliseconds to wait on a new token.  If ms is set to 0
+   * then it will try to get a new token if one is available but will not
    * block.
-   * 
+   *
    * \return std::string token that was matched or "" if none were matched.
    */
   std::string wait(long ms) {
diff --git a/serial.cmake b/serial.cmake
index e7d5e4b..f6d81a6 100644
--- a/serial.cmake
+++ b/serial.cmake
@@ -15,7 +15,7 @@ IF(EXISTS /usr/bin/clang)
   set(CMAKE_CXX_COMPILER /usr/bin/clang++)
   set(CMAKE_OSX_DEPLOYMENT_TARGET "")
   # set(CMAKE_CXX_FLAGS "-ferror-limit=5 -std=c++0x -stdlib=libc++")
-  set(CMAKE_CXX_FLAGS "-ferror-limit=5 -m64 -Wall -Weffc++ -pedantic -pedantic-errors -Wextra  -Wall -Waggregate-return -Wcast-align -Wcast-qual  -Wchar-subscripts  -Wcomment -Wconversion -Wdisabled-optimization -Wfloat-equal  -Wformat  -Wformat=2 -Wformat-nonliteral -Wformat-security  -Wformat-y2k -Wimplicit  -Wimport  -Winit-self  -Winline -Winvalid-pch   -Wlong-long -Wmissing-braces -Wmissing-field-initializers -Wmissing-format-attribute   -Wmissing-include-dirs -Wmissing-noreturn -Wpacked  -Wpadded -Wparentheses  -Wpointer-arith -Wredundant-decls -Wreturn-type -Wsequence-point  -Wshadow -Wsign-compare  -Wstack-protector -Wstrict-aliasing -Wstrict-aliasing=2 -Wswitch  -Wswitch-default -Wswitch-enum -Wtrigraphs  -Wuninitialized -Wunknown-pragmas  -Wunreachable-code -Wunused -Wunused-function  -Wunused-label  -Wunused-parameter -Wunused-value  -Wunused-variable  -Wvariadic-macros -Wvolatile-register-var  -Wwrite-strings")
+  set(CMAKE_CXX_FLAGS "-ferror-limit=5 -O3 -Wall -Weffc++ -pedantic -pedantic-errors -Wextra  -Wall -Waggregate-return -Wcast-align -Wcast-qual  -Wchar-subscripts  -Wcomment -Wconversion -Wdisabled-optimization -Wfloat-equal  -Wformat  -Wformat=2 -Wformat-nonliteral -Wformat-security  -Wformat-y2k -Wimplicit  -Wimport  -Winit-self  -Winline -Winvalid-pch   -Wlong-long -Wmissing-braces -Wmissing-field-initializers -Wmissing-format-attribute   -Wmissing-include-dirs -Wmissing-noreturn -Wpacked -Wparentheses  -Wpointer-arith -Wredundant-decls -Wreturn-type -Wsequence-point  -Wshadow -Wsign-compare  -Wstack-protector -Wstrict-aliasing -Wstrict-aliasing=2 -Wswitch  -Wswitch-default -Wswitch-enum -Wtrigraphs  -Wuninitialized -Wunknown-pragmas  -Wunreachable-code -Wunused -Wunused-function  -Wunused-label  -Wunused-parameter -Wunused-value  -Wunused-variable  -Wvariadic-macros -Wvolatile-register-var  -Wwrite-strings")
   set(CMAKE_BUILD_TYPE Debug)
 ENDIF(EXISTS /usr/bin/clang)
 
diff --git a/src/impl/unix.cc b/src/impl/unix.cc
index 77ca79c..5a7c89f 100644
--- a/src/impl/unix.cc
+++ b/src/impl/unix.cc
@@ -1,3 +1,5 @@
+/* Copyright 2012 William Woodall and John Harrison */
+
 #include 
 #include 
 #include 
@@ -33,31 +35,36 @@ Serial::SerialImpl::SerialImpl (const string &port, unsigned long baudrate,
                                 long timeout, bytesize_t bytesize,
                                 parity_t parity, stopbits_t stopbits,
                                 flowcontrol_t flowcontrol)
-: port_(port), fd_(-1), interCharTimeout_(-1), writeTimeout_(-1),
-  isOpen_(false), xonxoff_(false), rtscts_(false), ___(0), timeout_(timeout),
-  baudrate_(baudrate), parity_(parity), bytesize_(bytesize),
-  stopbits_(stopbits), flowcontrol_(flowcontrol)
+: port_ (port), fd_ (-1), isOpen_ (false), xonxoff_ (true), rtscts_ (false),
+  timeout_ (timeout), baudrate_ (baudrate), parity_ (parity), bytesize_ (bytesize),
+  stopbits_ (stopbits), flowcontrol_ (flowcontrol)
 {
-  if (port_.empty() == false) this->open();
+  if (port_.empty () == false)
+    open ();
 }
 
-Serial::SerialImpl::~SerialImpl () {
-  this->close();
+Serial::SerialImpl::~SerialImpl ()
+{
+  close();
 }
 
 void
-Serial::SerialImpl::open () {
-  if (port_.empty()) {
-    throw invalid_argument("bad port specified");
+Serial::SerialImpl::open ()
+{
+  if (port_.empty())
+  {
+    throw invalid_argument ("bad port specified");
   }
-  if (isOpen_ == true) {
-    throw SerialExecption("port already open");
+  if (isOpen_ == true)
+  {
+    throw SerialExecption ("port already open");
   }
-  
+
   fd_ = ::open (port_.c_str(), O_RDWR | O_NOCTTY | O_NONBLOCK);
 
-  if (fd_ == -1) {
-    throw IOException("invalid file descriptor");
+  if (fd_ == -1)
+  {
+    throw IOException ("invalid file descriptor");
   }
 
   reconfigurePort();
@@ -65,31 +72,25 @@ Serial::SerialImpl::open () {
 }
 
 void
-Serial::SerialImpl::reconfigurePort () {
-  if (fd_ == -1) {
+Serial::SerialImpl::reconfigurePort ()
+{
+  if (fd_ == -1)
+  {
     // Can only operate on a valid file descriptor
-    throw IOException("invalid file descriptor");
+    throw IOException ("invalid file descriptor");
   }
 
-  struct termios options; // The current options for the file descriptor
-  struct termios originalTTYAttrs; // The orignal file descriptor options
+  struct termios options; // The options for the file descriptor
 
-  uint8_t vmin = 0, vtime = 0; // timeout is done via select
-  if (interCharTimeout_ == -1) {
-    vmin = 1;
-    vtime = uint8_t(interCharTimeout_ * 10);
+  if (tcgetattr(fd_, &options) == -1)
+  {
+    throw IOException ("::tcgetattr");
   }
 
-  if (tcgetattr(fd_, &originalTTYAttrs) == -1) {
-    throw IOException("::tcgetattr");
-  }
-
-  options = originalTTYAttrs;
-
   // set up raw mode / no echo / binary
-  options.c_cflag |= (unsigned long)(CLOCAL|CREAD);
-  options.c_lflag &= (unsigned long) ~(ICANON|ECHO|ECHOE|ECHOK
-                       |ECHONL|ISIG|IEXTEN); //|ECHOPRT
+  options.c_cflag |= (unsigned long)  (CLOCAL|CREAD);
+  options.c_lflag &= (unsigned long) ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL|
+                                       ISIG|IEXTEN); //|ECHOPRT
 
   options.c_oflag &= (unsigned long) ~(OPOST);
   options.c_iflag &= (unsigned long) ~(INLCR|IGNCR|ICRNL|IGNBRK);
@@ -115,7 +116,7 @@ Serial::SerialImpl::reconfigurePort () {
   else if (bytesize_ == FIVEBITS)
       options.c_cflag |= CS5;
   else
-      throw invalid_argument("Invalid char len");
+      throw invalid_argument ("Invalid char len");
   // setup stopbits
   if (stopbits_ == STOPBITS_ONE)
       options.c_cflag &= (unsigned long) ~(CSTOPB);
@@ -123,22 +124,26 @@ Serial::SerialImpl::reconfigurePort () {
       options.c_cflag |=  (CSTOPB);  // XXX same as TWO.. there is no POSIX support for 1.5
   else if (stopbits_ == STOPBITS_TWO)
       options.c_cflag |=  (CSTOPB);
-  else 
-      throw invalid_argument("invalid stop bit");
+  else
+      throw invalid_argument ("invalid stop bit");
   // setup parity
   options.c_iflag &= (unsigned long) ~(INPCK|ISTRIP);
-  if (parity_ == PARITY_NONE) {
+  if (parity_ == PARITY_NONE)
+  {
     options.c_cflag &= (unsigned long) ~(PARENB|PARODD);
   }
-  else if (parity_ == PARITY_EVEN) {
+  else if (parity_ == PARITY_EVEN)
+  {
     options.c_cflag &= (unsigned long) ~(PARODD);
     options.c_cflag |=  (PARENB);
-  } 
-  else if (parity_ == PARITY_ODD) {
+  }
+  else if (parity_ == PARITY_ODD)
+  {
     options.c_cflag |=  (PARENB|PARODD);
   }
-  else {
-    throw invalid_argument("invalid parity");
+  else
+  {
+    throw invalid_argument ("invalid parity");
   }
   // setup flow control
   // xonxoff
@@ -168,21 +173,21 @@ Serial::SerialImpl::reconfigurePort () {
 #error "OS Support seems wrong."
 #endif
 
-  // buffer
-  // vmin "minimal number of characters to be read. = for non blocking"
-  options.c_cc[VMIN] = vmin;
-  // vtime
-  options.c_cc[VTIME] = vtime;
+  options.c_cc[VMIN] = 1; // Minimum of 1 character in the buffer
+  options.c_cc[VTIME] = 0; // timeout on waiting for new data
 
   // activate settings
-  ::tcsetattr(fd_, TCSANOW, &options);
+  ::tcsetattr (fd_, TCSANOW, &options);
 }
 
 void
-Serial::SerialImpl::close () {
-  if (isOpen_ == true) {
-    if (fd_ != -1) {
-      ::close(fd_); // Ignoring the outcome
+Serial::SerialImpl::close ()
+{
+  if (isOpen_ == true)
+  {
+    if (fd_ != -1)
+    {
+      ::close (fd_); // Ignoring the outcome
       fd_ = -1;
     }
     isOpen_ = false;
@@ -190,266 +195,318 @@ Serial::SerialImpl::close () {
 }
 
 bool
-Serial::SerialImpl::isOpen () const {
+Serial::SerialImpl::isOpen () const
+{
   return isOpen_;
 }
 
 size_t
-Serial::SerialImpl::available () {
-  if (!isOpen_) {
+Serial::SerialImpl::available ()
+{
+  if (!isOpen_)
+  {
     return 0;
   }
   int count = 0;
-  int result = ioctl(fd_, TIOCINQ, &count);
-  if (result == 0) {
-    return (size_t)count;
+  int result = ioctl (fd_, TIOCINQ, &count);
+  if (result == 0)
+  {
+    return static_cast (count);
   }
-  else {
-    throw IOException("ioctl");
+  else
+  {
+    throw IOException ("ioctl");
   }
 }
 
-string
-Serial::SerialImpl::read (size_t size) {
-  if (!isOpen_) {
-    throw PortNotOpenedException("Serial::read");
-  }
-  string message = "";
-  char *buf = NULL;
-  // Using size+1 to leave room for a null character
-  if (size > 1024) {
-    buf = (char*)malloc((size + 1) * sizeof(*buf));
-  }
-  else {
-    buf = (char*)alloca((size + 1) * sizeof(*buf));
+size_t
+Serial::SerialImpl::read (char* buf, size_t size)
+{
+  if (!isOpen_)
+  {
+    throw PortNotOpenedException ("Serial::read");
   }
   fd_set readfds;
-  memset(buf, 0, (size + 1) * sizeof(*buf));
   ssize_t bytes_read = 0;
-  while (bytes_read < (ssize_t)size) {
-    if (timeout_ != -1) {
-      FD_ZERO(&readfds);
-      FD_SET(fd_, &readfds);
+  while (true)
+  {
+    if (timeout_ != -1)
+    {
+      FD_ZERO (&readfds);
+      FD_SET (fd_, &readfds);
       struct timeval timeout;
-      timeout.tv_sec =        timeout_ / 1000;
-      timeout.tv_usec = (int) timeout_ % 1000;
-      int r = select(fd_ + 1, &readfds, NULL, NULL, &timeout);
+      timeout.tv_sec =                    timeout_ / 1000;
+      timeout.tv_usec = static_cast (timeout_ % 1000);
+      int r = select (fd_ + 1, &readfds, NULL, NULL, &timeout);
 
       if (r == -1 && errno == EINTR)
         continue;
 
-      if (r == -1) {
+      if (r == -1)
+      {
         perror("select()");
         exit(EXIT_FAILURE);
       }
     }
 
-    if (timeout_ == -1 || FD_ISSET(fd_, &readfds)) {
-      ssize_t newest_read = ::read(fd_,
-                                   buf + bytes_read,
-                                   size - static_cast(bytes_read));
+    if (timeout_ == -1 || FD_ISSET (fd_, &readfds))
+    {
+      bytes_read = ::read (fd_, buf, size);
       // read should always return some data as select reported it was
       // ready to read when we get to this point.
-      if (newest_read < 1) {
+      // printf("bytes_read: %lu\n", bytes_read);
+      if (bytes_read < 1)
+      {
         // Disconnected devices, at least on Linux, show the
         // behavior that they are always ready to read immediately
         // but reading returns nothing.
-        throw SerialExecption("device reports readiness to read but "
-                              "returned no data (device disconnected?)");
+        throw SerialExecption ("device reports readiness to read but "
+                               "returned no data (device disconnected?)");
       }
-      bytes_read += newest_read;
-    }
-    else {
-      break; // Timeout
+      break;
     }
   }
-  if (bytes_read > 0)
-    message.append(buf, (size_t)bytes_read);
-  if (size > 1024)
-    free(buf);
-  return message;
+  return static_cast (bytes_read);
 }
 
 size_t
-Serial::SerialImpl::write (const string &data) {
+Serial::SerialImpl::write (const string &data)
+{
   if (isOpen_ == false) {
-    throw PortNotOpenedException("Serial::write");
+    throw PortNotOpenedException ("Serial::write");
   }
-  ssize_t n = ::write(fd_, data.c_str(), data.length());
+  ssize_t n = ::write (fd_, data.c_str (), data.length ());
   if (n == -1) {
-    throw IOException("Write");
+    throw IOException ("Write");
   }
-  return (size_t)n;
+  return static_cast (n);
 }
 
 void
-Serial::SerialImpl::setPort (const string &port) {
+Serial::SerialImpl::setPort (const string &port)
+{
   port_ = port;
 }
 
 string
-Serial::SerialImpl::getPort () const {
+Serial::SerialImpl::getPort () const
+{
   return port_;
 }
 
 void
-Serial::SerialImpl::setTimeout (long timeout) {
+Serial::SerialImpl::setTimeout (long timeout)
+{
   timeout_ = timeout;
-  if (isOpen_) reconfigurePort();
+  if (isOpen_)
+    reconfigurePort ();
 }
 
 long
-Serial::SerialImpl::getTimeout () const {
+Serial::SerialImpl::getTimeout () const
+{
   return timeout_;
 }
 
 void
-Serial::SerialImpl::setBaudrate (unsigned long baudrate) {
+Serial::SerialImpl::setBaudrate (unsigned long baudrate)
+{
   baudrate_ = baudrate;
-  if (isOpen_) reconfigurePort();
+  if (isOpen_)
+    reconfigurePort ();
 }
 
 unsigned long
-Serial::SerialImpl::getBaudrate () const {
+Serial::SerialImpl::getBaudrate () const
+{
   return baudrate_;
 }
 
 void
-Serial::SerialImpl::setBytesize (serial::bytesize_t bytesize) {
+Serial::SerialImpl::setBytesize (serial::bytesize_t bytesize)
+{
   bytesize_ = bytesize;
-  if (isOpen_) reconfigurePort();
+  if (isOpen_)
+    reconfigurePort ();
 }
 
 serial::bytesize_t
-Serial::SerialImpl::getBytesize () const {
+Serial::SerialImpl::getBytesize () const
+{
   return bytesize_;
 }
 
 void
-Serial::SerialImpl::setParity (serial::parity_t parity) {
+Serial::SerialImpl::setParity (serial::parity_t parity)
+{
   parity_ = parity;
-  if (isOpen_) reconfigurePort();
+  if (isOpen_)
+    reconfigurePort ();
 }
 
 serial::parity_t
-Serial::SerialImpl::getParity () const {
+Serial::SerialImpl::getParity () const
+{
   return parity_;
 }
 
 void
-Serial::SerialImpl::setStopbits (serial::stopbits_t stopbits) {
+Serial::SerialImpl::setStopbits (serial::stopbits_t stopbits)
+{
   stopbits_ = stopbits;
-  if (isOpen_) reconfigurePort();
+  if (isOpen_)
+    reconfigurePort ();
 }
 
 serial::stopbits_t
-Serial::SerialImpl::getStopbits () const {
+Serial::SerialImpl::getStopbits () const
+{
   return stopbits_;
 }
 
 void
-Serial::SerialImpl::setFlowcontrol (serial::flowcontrol_t flowcontrol) {
+Serial::SerialImpl::setFlowcontrol (serial::flowcontrol_t flowcontrol)
+{
   flowcontrol_ = flowcontrol;
-  if (isOpen_) reconfigurePort();
+  if (isOpen_)
+    reconfigurePort ();
 }
 
 serial::flowcontrol_t
-Serial::SerialImpl::getFlowcontrol () const {
+Serial::SerialImpl::getFlowcontrol () const
+{
   return flowcontrol_;
 }
 
-void Serial::SerialImpl::flush () {
-  if (isOpen_ == false) {
-    throw PortNotOpenedException("Serial::flush");
+void
+Serial::SerialImpl::flush ()
+{
+  if (isOpen_ == false)
+  {
+    throw PortNotOpenedException ("Serial::flush");
   }
-  tcdrain(fd_);
+  tcdrain (fd_);
 }
 
-void Serial::SerialImpl::flushInput () {
-  if (isOpen_ == false) {
-    throw PortNotOpenedException("Serial::flushInput");
+void
+Serial::SerialImpl::flushInput ()
+{
+  if (isOpen_ == false)
+  {
+    throw PortNotOpenedException ("Serial::flushInput");
   }
-  tcflush(fd_, TCIFLUSH);
+  tcflush (fd_, TCIFLUSH);
 }
 
-void Serial::SerialImpl::flushOutput () {
-  if (isOpen_ == false) {
-    throw PortNotOpenedException("Serial::flushOutput");
+void
+Serial::SerialImpl::flushOutput ()
+{
+  if (isOpen_ == false)
+  {
+    throw PortNotOpenedException ("Serial::flushOutput");
   }
-  tcflush(fd_, TCOFLUSH);
+  tcflush (fd_, TCOFLUSH);
 }
 
-void Serial::SerialImpl::sendBreak(int duration) {
-  if (isOpen_ == false) {
-    throw PortNotOpenedException("Serial::sendBreak");
+void
+Serial::SerialImpl::sendBreak (int duration)
+{
+  if (isOpen_ == false)
+  {
+    throw PortNotOpenedException ("Serial::sendBreak");
   }
-  tcsendbreak(fd_, int(duration/4));
+  tcsendbreak (fd_, static_cast (duration/4));
 }
 
-void Serial::SerialImpl::setBreak(bool level) {
-  if (isOpen_ == false) {
-    throw PortNotOpenedException("Serial::setBreak");
+void
+Serial::SerialImpl::setBreak (bool level)
+{
+  if (isOpen_ == false)
+  {
+    throw PortNotOpenedException ("Serial::setBreak");
   }
-  if (level) {
-    ioctl(fd_, TIOCSBRK);
+  if (level)
+  {
+    ioctl (fd_, TIOCSBRK);
   }
   else {
-    ioctl(fd_, TIOCCBRK);
+    ioctl (fd_, TIOCCBRK);
   }
 }
 
-void Serial::SerialImpl::setRTS(bool level) {
-  if (isOpen_ == false) {
-    throw PortNotOpenedException("Serial::setRTS");
+void
+Serial::SerialImpl::setRTS (bool level)
+{
+  if (isOpen_ == false)
+  {
+    throw PortNotOpenedException ("Serial::setRTS");
   }
-  if (level) {
-    ioctl(fd_, TIOCMBIS, TIOCM_RTS);
+  if (level)
+  {
+    ioctl (fd_, TIOCMBIS, TIOCM_RTS);
   }
   else {
-    ioctl(fd_, TIOCMBIC, TIOCM_RTS);
+    ioctl (fd_, TIOCMBIC, TIOCM_RTS);
   }
 }
 
-void Serial::SerialImpl::setDTR(bool level) {
-  if (isOpen_ == false) {
-    throw PortNotOpenedException("Serial::setDTR");
+void
+Serial::SerialImpl::setDTR (bool level)
+{
+  if (isOpen_ == false)
+  {
+    throw PortNotOpenedException ("Serial::setDTR");
   }
-  if (level) {
-    ioctl(fd_, TIOCMBIS, TIOCM_DTR);
+  if (level)
+  {
+    ioctl (fd_, TIOCMBIS, TIOCM_DTR);
   }
-  else {
-    ioctl(fd_, TIOCMBIC, TIOCM_DTR);
+  else
+  {
+    ioctl (fd_, TIOCMBIC, TIOCM_DTR);
   }
 }
 
-bool Serial::SerialImpl::getCTS() {
-  if (isOpen_ == false) {
-    throw PortNotOpenedException("Serial::getCTS");
+bool
+Serial::SerialImpl::getCTS ()
+{
+  if (isOpen_ == false)
+  {
+    throw PortNotOpenedException ("Serial::getCTS");
   }
-  int s = ioctl(fd_, TIOCMGET, 0);
+  int s = ioctl (fd_, TIOCMGET, 0);
   return (s & TIOCM_CTS) != 0;
 }
 
-bool Serial::SerialImpl::getDSR() {
-  if (isOpen_ == false) {
-    throw PortNotOpenedException("Serial::getDSR");
+bool
+Serial::SerialImpl::getDSR()
+{
+  if (isOpen_ == false)
+  {
+    throw PortNotOpenedException ("Serial::getDSR");
   }
   int s = ioctl(fd_, TIOCMGET, 0);
   return (s & TIOCM_DSR) != 0;
 }
 
-bool Serial::SerialImpl::getRI() {
-  if (isOpen_ == false) {
-    throw PortNotOpenedException("Serial::getRI");
+bool
+Serial::SerialImpl::getRI()
+{
+  if (isOpen_ == false)
+  {
+    throw PortNotOpenedException ("Serial::getRI");
   }
-  int s = ioctl(fd_, TIOCMGET, 0);
+  int s = ioctl (fd_, TIOCMGET, 0);
   return (s & TIOCM_RI) != 0;
 }
 
-bool Serial::SerialImpl::getCD() {
-  if (isOpen_ == false) {
-    throw PortNotOpenedException("Serial::getCD");
+bool
+Serial::SerialImpl::getCD()
+{
+  if (isOpen_ == false)
+  {
+    throw PortNotOpenedException ("Serial::getCD");
   }
-  int s = ioctl(fd_, TIOCMGET, 0);
+  int s = ioctl (fd_, TIOCMGET, 0);
   return (s & TIOCM_CD) != 0;
 }
diff --git a/src/serial.cc b/src/serial.cc
index 9a5def8..beed5ba 100644
--- a/src/serial.cc
+++ b/src/serial.cc
@@ -1,3 +1,10 @@
+/* Copyright 2012 William Woodall and John Harrison */
+
+#include 
+
+#include 
+#include 
+
 #include "serial/serial.h"
 
 #ifdef _WIN32
@@ -6,11 +13,14 @@
 #include "serial/impl/unix.h"
 #endif
 
-using std::string;
-using std::vector;
-using std::numeric_limits;
-using std::size_t;
 using std::invalid_argument;
+using std::memset;
+using std::min;
+using std::numeric_limits;
+using std::vector;
+using std::size_t;
+using std::string;
+
 using serial::Serial;
 using serial::SerialExecption;
 using serial::IOException;
@@ -21,204 +31,301 @@ using serial::flowcontrol_t;
 
 Serial::Serial (const string &port, unsigned long baudrate, long timeout,
                 bytesize_t bytesize, parity_t parity, stopbits_t stopbits,
-                flowcontrol_t flowcontrol)
+                flowcontrol_t flowcontrol, const size_t buffer_size)
+ : buffer_size_(buffer_size)
 {
-  pimpl = new SerialImpl(port, baudrate, timeout, bytesize, parity,
+  pimpl_ = new SerialImpl (port, baudrate, timeout, bytesize, parity,
                            stopbits, flowcontrol);
+  read_cache_ = new char[buffer_size_];
+  memset (read_cache_, 0, buffer_size_ * sizeof (char));
 }
 
-Serial::~Serial () {
-  delete pimpl;
+Serial::~Serial ()
+{
+  delete   pimpl_;
+  delete[] read_cache_;
 }
 
 void
-Serial::open () {
-  this->pimpl->open ();
+Serial::open ()
+{
+  pimpl_->open ();
 }
 
 void
-Serial::close () {
-  this->pimpl->close ();
+Serial::close ()
+{
+  pimpl_->close ();
+  memset (read_cache_, 0, buffer_size_ * sizeof (char));
 }
 
 bool
-Serial::isOpen () const {
-  return this->pimpl->isOpen ();
+Serial::isOpen () const
+{
+  return pimpl_->isOpen ();
 }
 
 size_t
-Serial::available () {
-  return this->pimpl->available();
+Serial::available ()
+{
+  return pimpl_->available ();
 }
 
 string
-Serial::read (size_t size) {
-  return this->pimpl->read (size);
+Serial::read (size_t size)
+{
+  size_t cache_size = strlen (read_cache_);
+  if (cache_size >= size)
+  {
+    // Don't need to do a new read.
+    string result (read_cache_, size);
+    memmove (read_cache_, read_cache_ + size, cache_size - size);
+    *(read_cache_ + cache_size - size) = '\0';
+    return result;
+  }
+  else
+  {
+    // Needs to read, loop until we have read enough... or timeout
+    size_t chars_left = 0;
+    string result = "";
+
+    if (cache_size > 0)
+    {
+      result.append (read_cache_, cache_size);
+      memset (read_cache_, 0, buffer_size_);
+      chars_left = size - cache_size;
+    }
+    else
+    {
+      chars_left = size;
+    }
+
+    while (true)
+    {
+      size_t chars_read = pimpl_->read (read_cache_, buffer_size_ - 1);
+      if (chars_read > 0)
+      {
+        *(read_cache_ + chars_read) = '\0';
+        if (chars_left > chars_read)
+        {
+          memset (read_cache_, 0, buffer_size_);
+          result.append (read_cache_);
+          chars_left -= chars_read;
+        }
+        else
+        {
+          result.append (read_cache_, static_cast (chars_left));
+          memmove (read_cache_, read_cache_ + chars_left, chars_read - chars_left);
+          *(read_cache_ + chars_read - chars_left) = '\0';
+          memset (read_cache_ + chars_read - chars_left, 0,
+                  buffer_size_ - chars_read - chars_left);
+          // Finished reading all of the data
+          break;
+        }
+      }
+      else
+        break; // Timeout occured
+    }
+    return result;
+  }
 }
 
 string
-Serial::readline(size_t size, string eol) {
-  size_t leneol = eol.length();
+Serial::readline (size_t size, string eol)
+{
+  size_t leneol = eol.length ();
   string line = "";
-  while (true) {
-    string c = pimpl->read(1);
-    if (!c.empty()) {
-      line.append(c);
-      if (line.length() > leneol
-       && line.substr(line.length() - leneol, leneol) == eol)
+  while (true)
+  {
+    string c = read (1);
+    if (!c.empty ())
+    {
+      line.append (c);
+      if (line.length () > leneol &&
+          line.substr (line.length () - leneol, leneol) == eol)
         break;
-      if (line.length() >= size) {
+      if (line.length () >= size)
+      {
         break;
       }
     }
-    else {
+    else
       // Timeout
       break;
-    }
   }
   return line;
 }
 
 vector
-Serial::readlines(string eol) {
-  if (this->pimpl->getTimeout() < 0) {
+Serial::readlines(string eol)
+{
+  if (pimpl_->getTimeout () < 0)
+  {
     throw "Error, must be set for readlines";
   }
-  size_t leneol = eol.length();
+  size_t leneol = eol.length ();
   vector lines;
-  while (true) {
-    string line = readline(numeric_limits::max(), eol);
-    if (!line.empty()) {
-      lines.push_back(line);
-      if (line.substr(line.length() - leneol, leneol) == eol)
+  while (true)
+  {
+    string line = readline (numeric_limits::max (), eol);
+    if (!line.empty ())
+    {
+      lines.push_back (line);
+      if (line.substr (line.length () - leneol, leneol) == eol)
         break;
     }
-    else {
+    else
       // Timeout
       break;
-    }
   }
   return lines;
 }
 
 size_t
-Serial::write (const string &data) {
-  return this->pimpl->write (data);
+Serial::write (const string &data)
+{
+  return pimpl_->write (data);
 }
 
 void
-Serial::setPort (const string &port) {
-  bool was_open = pimpl->isOpen();
-  if (was_open) this->close();
-  this->pimpl->setPort (port);
-  if (was_open) this->open();
+Serial::setPort (const string &port)
+{
+  bool was_open = pimpl_->isOpen();
+  if (was_open) close();
+  pimpl_->setPort (port);
+  if (was_open) open();
 }
 
 string
-Serial::getPort () const {
-  return this->pimpl->getPort ();
+Serial::getPort () const
+{
+  return pimpl_->getPort ();
 }
 
 void
-Serial::setTimeout (long timeout) {
-  this->pimpl->setTimeout (timeout);
+Serial::setTimeout (long timeout)
+{
+  pimpl_->setTimeout (timeout);
 }
 
 long
 Serial::getTimeout () const {
-  return this->pimpl->getTimeout ();
+  return pimpl_->getTimeout ();
 }
 
 void
-Serial::setBaudrate (unsigned long baudrate) {
-  this->pimpl->setBaudrate (baudrate);
+Serial::setBaudrate (unsigned long baudrate)
+{
+  pimpl_->setBaudrate (baudrate);
 }
 
 unsigned long
-Serial::getBaudrate () const {
-  return this->pimpl->getBaudrate ();
+Serial::getBaudrate () const
+{
+  return pimpl_->getBaudrate ();
 }
 
 void
-Serial::setBytesize (bytesize_t bytesize) {
-  this->pimpl->setBytesize (bytesize);
+Serial::setBytesize (bytesize_t bytesize)
+{
+  pimpl_->setBytesize (bytesize);
 }
 
 bytesize_t
-Serial::getBytesize () const {
-  return this->pimpl->getBytesize ();
+Serial::getBytesize () const
+{
+  return pimpl_->getBytesize ();
 }
 
 void
-Serial::setParity (parity_t parity) {
-  this->pimpl->setParity (parity);
+Serial::setParity (parity_t parity)
+{
+  pimpl_->setParity (parity);
 }
 
 parity_t
-Serial::getParity () const {
-  return this->pimpl->getParity ();
+Serial::getParity () const
+{
+  return pimpl_->getParity ();
 }
 
 void
-Serial::setStopbits (stopbits_t stopbits) {
-  this->pimpl->setStopbits (stopbits);
+Serial::setStopbits (stopbits_t stopbits)
+{
+  pimpl_->setStopbits (stopbits);
 }
 
 stopbits_t
-Serial::getStopbits () const {
-  return this->pimpl->getStopbits ();
+Serial::getStopbits () const
+{
+  return pimpl_->getStopbits ();
 }
 
 void
-Serial::setFlowcontrol (flowcontrol_t flowcontrol) {
-  this->pimpl->setFlowcontrol (flowcontrol);
+Serial::setFlowcontrol (flowcontrol_t flowcontrol)
+{
+  pimpl_->setFlowcontrol (flowcontrol);
 }
 
 flowcontrol_t
-Serial::getFlowcontrol () const {
-  return this->pimpl->getFlowcontrol ();
+Serial::getFlowcontrol () const
+{
+  return pimpl_->getFlowcontrol ();
 }
 
-void Serial::flush() {
-  this->pimpl->flush();
+void Serial::flush ()
+{
+  pimpl_->flush ();
+  memset (read_cache_, 0, buffer_size_);
 }
 
-void Serial::flushInput() {
-  this->pimpl->flushInput();
+void Serial::flushInput ()
+{
+  pimpl_->flushInput ();
 }
 
-void Serial::flushOutput() {
-  this->pimpl->flushOutput();
+void Serial::flushOutput ()
+{
+  pimpl_->flushOutput ();
+  memset (read_cache_, 0, buffer_size_);
 }
 
-void Serial::sendBreak(int duration) {
-  this->pimpl->sendBreak(duration);
+void Serial::sendBreak (int duration)
+{
+  pimpl_->sendBreak (duration);
 }
 
-void Serial::setBreak(bool level) {
-  this->pimpl->setBreak(level);
+void Serial::setBreak (bool level)
+{
+  pimpl_->setBreak (level);
 }
 
-void Serial::setRTS(bool level) {
-  this->pimpl->setRTS(level);
+void Serial::setRTS (bool level)
+{
+  pimpl_->setRTS (level);
 }
 
-void Serial::setDTR(bool level) {
-  this->pimpl->setDTR(level);
+void Serial::setDTR (bool level)
+{
+  pimpl_->setDTR (level);
 }
 
-bool Serial::getCTS() {
-  return this->pimpl->getCTS();
+bool Serial::getCTS ()
+{
+  return pimpl_->getCTS ();
 }
 
-bool Serial::getDSR() {
-  return this->pimpl->getDSR();
+bool Serial::getDSR ()
+{
+  return pimpl_->getDSR ();
 }
 
-bool Serial::getRI() {
-  return this->pimpl->getRI();
+bool Serial::getRI ()
+{
+  return pimpl_->getRI ();
 }
 
-bool Serial::getCD() {
-  return this->pimpl->getCD();
+bool Serial::getCD ()
+{
+  return pimpl_->getCD ();
 }
diff --git a/src/serial_listener.cc b/src/serial_listener.cc
index e3af13a..9a1172a 100644
--- a/src/serial_listener.cc
+++ b/src/serial_listener.cc
@@ -1,3 +1,5 @@
+/* Copyright 2012 William Woodall and John Harrison */
+
 #include "serial/serial_listener.h"
 
 /***** Inline Functions *****/
diff --git a/tests/serial_tests.cc b/tests/serial_tests.cc
index bef6352..184d99d 100644
--- a/tests/serial_tests.cc
+++ b/tests/serial_tests.cc
@@ -1,10 +1,3 @@
-#include "gtest/gtest.h"
-
-#include 
-
-// OMG this is so nasty...
-// #define private public
-// #define protected public
 #include 
 #include 
 
@@ -14,17 +7,27 @@ using std::string;
 using std::cout;
 using std::endl;
 using serial::Serial;
+using serial::SerialExecption;
 
 int main(int argc, char **argv) {
-  Serial s("/dev/tty.usbserial-A900adHq", 115200, 2000);
-  s.flush();
-  int count = 0;
-  while (1) {
-    size_t available = s.available();
-    cout << "avialable: " << available << endl;
-    string line = s.readline();
-    cout << count << ": " << line;
-    count++;
+  try {
+    Serial s("/dev/tty.usbserial-A900adHq", 115200, 2000);
+    s.flush();
+    long long count = 0;
+    while (1) {
+      // size_t available = s.available();
+      // cout << "avialable: " << available << endl;
+      string line = s.readline();
+      cout << count << ": " << line << line.length() << endl;
+      count++;
+    }
+  }
+  catch (SerialExecption e)
+  {
+    cout << "Caught SerialException: " << e.what() << endl;
+  }
+  catch (...)
+  {
+    cout << "Caught an error." << endl;
   }
-  cout << endl << endl;
 }