/* @(#)puts.c 3.3 */ /*LINTLIBRARY*/ /* * This version writes directly to the buffer rather than looping on putc. * Ptr args aren't checked for NULL because the program would be a * catastrophic mess anyway. Better to abort than just to return NULL. */ #include <stdio.h> #include "stdiom.h" extern char *memccpy(); int puts(ptr) char *ptr; { char *p; register int ndone = 0, n; register unsigned char *cptr, *bufend; if (_WRTCHK(stdout)) return (0); bufend = _bufend(stdout); for ( ; ; ptr += n) { while ((n = bufend - (cptr = stdout->_ptr)) <= 0) /* full buf */ if (_xflsbuf(stdout) == EOF) return(EOF); if ((p = memccpy((char *) cptr, ptr, '\0', n)) != NULL) n = p - (char *) cptr; stdout->_cnt -= n; stdout->_ptr += n; _BUFSYNC(stdout); ndone += n; if (p != NULL) { stdout->_ptr[-1] = '\n'; /* overwrite '\0' with '\n' */ if (stdout->_flag & (_IONBF | _IOLBF)) /* flush line */ if (_xflsbuf(stdout) == EOF) return(EOF); return(ndone); } } }