120 lines
3 KiB
C
120 lines
3 KiB
C
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/* Arduino SdFat Library
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* Copyright (C) 2012 by William Greiman
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*
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* This file is part of the Arduino SdFat Library
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*
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* This Library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This Library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the Arduino SdFat Library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#ifndef ArduinoStream_h
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#define ArduinoStream_h
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/**
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* \file
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* \brief ArduinoInStream and ArduinoOutStream classes
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*/
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#include <bufstream.h>
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//==============================================================================
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/**
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* \class ArduinoInStream
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* \brief Input stream for Arduino Stream objects
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*/
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class ArduinoInStream : public ibufstream {
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public:
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/**
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* Constructor
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* \param[in] hws hardware stream
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* \param[in] buf buffer for input line
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* \param[in] size size of input buffer
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*/
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ArduinoInStream(Stream &hws, char* buf, size_t size) {
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hw_ = &hws;
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line_ = buf;
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size_ = size;
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}
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/** read a line. */
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void readline() {
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size_t i = 0;
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uint32_t t;
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line_[0] = '\0';
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while (!hw_->available());
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while (1) {
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t = millis();
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while (!hw_->available()) {
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if ((millis() - t) > 10) goto done;
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}
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if (i >= (size_ - 1)) {
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setstate(failbit);
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return;
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}
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line_[i++] = hw_->read();
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line_[i] = '\0';
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}
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done:
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init(line_);
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}
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protected:
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/** Internal - do not use.
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* \param[in] off
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* \param[in] way
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* \return true/false.
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*/
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bool seekoff(off_type off, seekdir way) {return false;}
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/** Internal - do not use.
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* \param[in] pos
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* \return true/false.
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*/
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bool seekpos(pos_type pos) {return false;}
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private:
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char *line_;
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size_t size_;
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Stream* hw_;
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};
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//==============================================================================
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/**
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* \class ArduinoOutStream
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* \brief Output stream for Arduino Print objects
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*/
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class ArduinoOutStream : public ostream {
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public:
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/** constructor
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*
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* \param[in] pr Print object for this ArduinoOutStream.
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*/
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explicit ArduinoOutStream(Print& pr) : pr_(&pr) {}
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protected:
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/// @cond SHOW_PROTECTED
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/**
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* Internal do not use
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* \param[in] c
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*/
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void putch(char c) {
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if (c == '\n') pr_->write('\r');
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pr_->write(c);
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}
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void putstr(const char* str) {pr_->write(str);}
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bool seekoff(off_type off, seekdir way) {return false;}
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bool seekpos(pos_type pos) {return false;}
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bool sync() {return true;}
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pos_type tellpos() {return 0;}
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/// @endcond
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private:
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ArduinoOutStream() {}
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Print* pr_;
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};
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#endif // ArduinoStream_h
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