1 files changed, 74 insertions, 0 deletions
diff --git a/libio/iogetline.c b/libio/iogetline.c
new file mode 100644
index 0000000000..85dff7e3e7
--- /dev/null
+++ b/libio/iogetline.c
@@ -0,0 +1,74 @@
+/* 
+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
+DEFUN(_IO_getline, (fp, buf, n, delim, extract_delim),
+      _IO_FILE *fp AND char* buf AND _IO_size_t n
+      AND int delim AND 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;
+}