152 lines
3.7 KiB
C++
152 lines
3.7 KiB
C++
/* 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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#include <SdFat.h>
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//==============================================================================
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/// @cond SHOW_PROTECTED
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int16_t SdStreamBase::getch() {
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uint8_t c;
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int8_t s = read(&c, 1);
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if (s != 1) {
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if (s < 0) {
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setstate(badbit);
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} else {
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setstate(eofbit);
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}
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return -1;
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}
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if (c != '\r' || (getmode() & ios::binary)) return c;
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s = read(&c, 1);
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if (s == 1 && c == '\n') return c;
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if (s == 1) seekCur(-1);
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return '\r';
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}
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//------------------------------------------------------------------------------
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void SdStreamBase::open(const char* path, ios::openmode mode) {
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uint8_t flags;
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switch (mode & (app | in | out | trunc)) {
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case app | in:
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case app | in | out:
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flags = O_RDWR | O_APPEND | O_CREAT;
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break;
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case app:
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case app | out:
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flags = O_WRITE | O_APPEND | O_CREAT;
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break;
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case in:
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flags = O_READ;
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break;
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case in | out:
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flags = O_RDWR;
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break;
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case in | out | trunc:
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flags = O_RDWR | O_TRUNC | O_CREAT;
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break;
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case out:
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case out | trunc:
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flags = O_WRITE | O_TRUNC | O_CREAT;
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break;
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default:
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goto fail;
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}
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if (mode & ios::ate) flags |= O_AT_END;
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if (!SdBaseFile::open(path, flags)) goto fail;
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setmode(mode);
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clear();
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return;
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fail:
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SdBaseFile::close();
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setstate(failbit);
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return;
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}
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//------------------------------------------------------------------------------
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void SdStreamBase::putch(char c) {
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if (c == '\n' && !(getmode() & ios::binary)) {
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write('\r');
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}
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write(c);
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if (writeError) setstate(badbit);
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}
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//------------------------------------------------------------------------------
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void SdStreamBase::putstr(const char* str) {
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size_t n = 0;
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while (1) {
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char c = str[n];
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if (c == '\0' || (c == '\n' && !(getmode() & ios::binary))) {
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if (n > 0) write(str, n);
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if (c == '\0') break;
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write('\r');
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str += n;
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n = 0;
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}
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n++;
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}
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if (writeError) setstate(badbit);
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}
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//------------------------------------------------------------------------------
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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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*/
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bool SdStreamBase::seekoff(off_type off, seekdir way) {
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pos_type pos;
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switch (way) {
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case beg:
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pos = off;
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break;
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case cur:
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pos = curPosition() + off;
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break;
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case end:
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pos = fileSize() + off;
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break;
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default:
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return false;
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}
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return seekpos(pos);
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}
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//------------------------------------------------------------------------------
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/** Internal do not use
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* \param[in] pos
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*/
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bool SdStreamBase::seekpos(pos_type pos) {
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return seekSet(pos);
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}
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//------------------------------------------------------------------------------
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int SdStreamBase::write(const void* buf, size_t n) {
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return SdBaseFile::write(buf, n);
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}
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//------------------------------------------------------------------------------
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void SdStreamBase::write(char c) {
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write(&c, 1);
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}
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/// @endcond
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