diff options
author | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
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committer | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
commit | f061ca497464fe85284906fb163a33eaee7a91ef (patch) | |
tree | 33ef1bfb529aed382e8526c607c4e18717f92571 /lib/usbhost/arduino-1.0.1/cores/arduino/Stream.h | |
parent | ff65185dec6f97be1eb49f17cea526a0d0bbf3d6 (diff) | |
parent | 4bad375d7c09d949a9dcdd4feba147c9c7a67ec6 (diff) |
Breaking changes develop merge to master, 2021Q3 edition. (#14196)
Diffstat (limited to 'lib/usbhost/arduino-1.0.1/cores/arduino/Stream.h')
-rw-r--r-- | lib/usbhost/arduino-1.0.1/cores/arduino/Stream.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/lib/usbhost/arduino-1.0.1/cores/arduino/Stream.h b/lib/usbhost/arduino-1.0.1/cores/arduino/Stream.h new file mode 100644 index 0000000000..58bbf752f3 --- /dev/null +++ b/lib/usbhost/arduino-1.0.1/cores/arduino/Stream.h @@ -0,0 +1,96 @@ +/* + Stream.h - base class for character-based streams. + Copyright (c) 2010 David A. Mellis. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + parsing functions based on TextFinder library by Michael Margolis +*/ + +#ifndef Stream_h +#define Stream_h + +#include <inttypes.h> +#include "Print.h" + +// compatability macros for testing +/* +#define getInt() parseInt() +#define getInt(skipChar) parseInt(skipchar) +#define getFloat() parseFloat() +#define getFloat(skipChar) parseFloat(skipChar) +#define getString( pre_string, post_string, buffer, length) +readBytesBetween( pre_string, terminator, buffer, length) +*/ + +class Stream : public Print +{ + private: + unsigned long _timeout; // number of milliseconds to wait for the next char before aborting timed read + unsigned long _startMillis; // used for timeout measurement + int timedRead(); // private method to read stream with timeout + int timedPeek(); // private method to peek stream with timeout + int peekNextDigit(); // returns the next numeric digit in the stream or -1 if timeout + + public: + virtual int available() = 0; + virtual int read() = 0; + virtual int peek() = 0; + virtual void flush() = 0; + + Stream() {_timeout=1000;} + +// parsing methods + + void setTimeout(unsigned long timeout); // sets maximum milliseconds to wait for stream data, default is 1 second + + bool find(char *target); // reads data from the stream until the target string is found + // returns true if target string is found, false if timed out (see setTimeout) + + bool find(char *target, size_t length); // reads data from the stream until the target string of given length is found + // returns true if target string is found, false if timed out + + bool findUntil(char *target, char *terminator); // as find but search ends if the terminator string is found + + bool findUntil(char *target, size_t targetLen, char *terminate, size_t termLen); // as above but search ends if the terminate string is found + + + long parseInt(); // returns the first valid (long) integer value from the current position. + // initial characters that are not digits (or the minus sign) are skipped + // integer is terminated by the first character that is not a digit. + + float parseFloat(); // float version of parseInt + + size_t readBytes( char *buffer, size_t length); // read chars from stream into buffer + // terminates if length characters have been read or timeout (see setTimeout) + // returns the number of characters placed in the buffer (0 means no valid data found) + + size_t readBytesUntil( char terminator, char *buffer, size_t length); // as readBytes with terminator character + // terminates if length characters have been read, timeout, or if the terminator character detected + // returns the number of characters placed in the buffer (0 means no valid data found) + + // Arduino String functions to be added here + String readString(); + String readStringUntil(char terminator); + + protected: + long parseInt(char skipChar); // as above but the given skipChar is ignored + // as above but the given skipChar is ignored + // this allows format characters (typically commas) in values to be ignored + + float parseFloat(char skipChar); // as above but the given skipChar is ignored +}; + +#endif |