61d5ffaf10
issues in these areas:
.h's installed
.hP's installed
-lcurses interaction
files needed in ~/legal for copyleft reasons.
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/*
|
|
Copyright (C) 1993 Free Software Foundation
|
|
|
|
This file is part of the GNU IO Library. This library 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, or (at your option)
|
|
any later version.
|
|
|
|
This library 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 GNU CC; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
As a special exception, if you link this library with files
|
|
compiled with a GNU compiler to produce an executable, this does not cause
|
|
the resulting executable to be covered by the GNU General Public License.
|
|
This exception does not however invalidate any other reasons why
|
|
the executable file might be covered by the GNU General Public License. */
|
|
|
|
#include "libioP.h"
|
|
#include <string.h>
|
|
|
|
/* Algorithm based on that used by Berkeley pre-4.4 fgets implementation.
|
|
|
|
Read chars into buf (of size n), until delim is seen.
|
|
Return number of chars read (at most n).
|
|
Does not put a terminating '\0' in buf.
|
|
If extract_delim < 0, leave delimiter unread.
|
|
If extract_delim > 0, insert delim in output. */
|
|
|
|
_IO_size_t
|
|
_IO_getline(fp, buf, n, delim, extract_delim)
|
|
_IO_FILE *fp;
|
|
char* buf;
|
|
_IO_size_t n;
|
|
int delim;
|
|
int extract_delim;
|
|
{
|
|
register char *ptr = buf;
|
|
do
|
|
{
|
|
_IO_ssize_t len = fp->_IO_read_end - fp->_IO_read_ptr;
|
|
char *t;
|
|
if (len <= 0)
|
|
if (__underflow(fp) == EOF)
|
|
break;
|
|
else
|
|
len = fp->_IO_read_end - fp->_IO_read_ptr;
|
|
if (len >= n)
|
|
len = n;
|
|
t = (char*)memchr((void*)fp->_IO_read_ptr, delim, len);
|
|
if (t != NULL)
|
|
{
|
|
_IO_size_t old_len = ptr-buf;
|
|
len = t - fp->_IO_read_ptr;
|
|
if (extract_delim >= 0)
|
|
{
|
|
t++;
|
|
if (extract_delim > 0)
|
|
len++;
|
|
}
|
|
memcpy((void*)ptr, (void*)fp->_IO_read_ptr, len);
|
|
fp->_IO_read_ptr = t;
|
|
return old_len + len;
|
|
}
|
|
memcpy((void*)ptr, (void*)fp->_IO_read_ptr, len);
|
|
fp->_IO_read_ptr += len;
|
|
ptr += len;
|
|
n -= len;
|
|
} while (n != 0);
|
|
return ptr - buf;
|
|
}
|