/*
* Copyright (c) International Business Machines Corp., 2001
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*****************************************************************************
* readline.c
******************************************************************************/
#include <unistd.h>
/* Read line from a descriptor, byte at a time, return number of
characters up to the null */
int readline(int fd, char *ptr, int maxlen)
{
int n, rc;
char c;
/*
printf("readline: fd = %d\n", fd);
*/
for (n = 1; n < maxlen; n++) {
if ((rc = read(fd, &c, 1)) == 1) {
*ptr++ = c;
if (c == '\n')
break;
} else if (rc == 0) {
if (n == 1)
return 0; /* EOF no data read */
else
break; /* EOF, some data read */
} else
return (-1); /* error */
}
*ptr = 0;
return (n);
}