ref: b953ac1cdd26aad71a91905475ce2ff1a0a9cbc8
dir: /src/libc/stdio/__putc.c/
#include <errno.h> #include <stdio.h> #include <stdlib.h> #include "../libc.h" static void cleanup(void) { fflush(NULL); } int __putc(int ch, FILE *fp) { if (fp->flags & _IOERR) return EOF; if (fp->flags & _IOREAD) { fp->flags |= _IOERR; errno = EBADF; return EOF; } if (fp->flags & _IOSTRG) return ch & 0xFF; if (fp->buf == NULL && _allocbuf(fp)) return EOF; _flushall = cleanup; if (fp->flags & _IOLBF) { if (fp->wp == fp->lp && _flsbuf(fp)) return EOF; *fp->wp++ = ch; if (ch == '\n' && _flsbuf(fp)) return EOF; } else if (fp->flags & _IOFBF) { if (_flsbuf(fp)) return EOF; *fp->wp++ = ch; fp->rp = fp->buf + fp->len; } else { *fp->wp++ = ch; if (_flsbuf(fp)) return EOF; } fp->flags |= _IOWRITE; return ch & 0xFF; }