32 lines
561 B
C
32 lines
561 B
C
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#include "file.h"
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#include <errno.h>
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#include <stdio.h>
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int fgetc(struct __opaque_file *stream)
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{
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if (stream->f_flags & (FILE_EOF | FILE_ERR)) {
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return EOF;
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}
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size_t available = __libc_file_available(stream);
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if (available == 0) {
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int err = __libc_file_refill(stream);
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if (err != SUCCESS) {
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__set_errno(err);
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stream->f_flags |= FILE_ERR;
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return EOF;
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}
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available = __libc_file_available(stream);
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}
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if (available == 0) {
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stream->f_flags |= FILE_EOF;
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return EOF;
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}
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char c = stream->f_buf[stream->f_buf_readptr++];
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return c;
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}
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