YWrobot CYB：创建页面，内容为“

 /*   Stream.h - base class for character-based streams.   Copyright (c) 2010 David A. Mellis.  All right reserved.    This library is free s...”

2016-04-25T02:18:47Z

新页面

<pre style="color:blue">
/*
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
{
protected:
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

</pre>

Stream.h - 版本历史

YWrobot CYB：创建页面，内容为“
/* Stream.h - base class for character-based streams. Copyright (c) 2010 David A. Mellis. All right reserved. This library is free s...”