mirror of https://github.com/jscrane/r65emu.git
52 lines
736 B
C++
52 lines
736 B
C++
#include <SD.h>
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#include "sdtape.h"
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static File file, dir;
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void sdtape::start(const char *programs)
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{
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dir = SD.open(programs);
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_pos = _len = 0;
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}
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void sdtape::stop()
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{
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file.close();
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}
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bool sdtape::more()
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{
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if (_pos >= _len) {
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_pos = 0;
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_len = file.read(_buf, sizeof(_buf));
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if (_len == 0) // eof
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return false;
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}
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return true;
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}
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const char *sdtape::advance() {
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bool rewound = false;
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file.close();
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while (true) {
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file = dir.openNextFile();
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if (file) {
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if (file.isDirectory())
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file.close();
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else
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break;
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} else if (!rewound) {
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dir.rewindDirectory();
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rewound = true;
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} else
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return 0;
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}
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return file.name();
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}
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const char *sdtape::rewind() {
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dir.rewindDirectory();
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return advance();
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}
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