1 files changed, 139 insertions, 0 deletions
diff --git a/libio/isgetline.cc b/libio/isgetline.cc
new file mode 100644
index 0000000..add2663
--- /dev/null
+++ b/libio/isgetline.cc
@@ -0,0 +1,139 @@
+/* This is part of libio/iostream, providing -*- C++ -*- input/output.
+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 this library; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, 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 "iostream.h"
+#include <string.h>
+
+istream& istream::getline(char* buf, int len, char delim)
+{
+  _gcount = 0;
+  if (len <= 0)
+    {
+      set(ios::failbit);
+      return *this;
+    }
+  int ch;
+  if (ipfx1())
+    {
+      streambuf *sb = rdbuf();
+      _gcount = _IO_getline(sb, buf, len - 1, delim, -1);
+      ch = sb->sbumpc();
+      if (ch == EOF)
+	set (_gcount == 0 ? (ios::failbit|ios::eofbit) : ios::eofbit);
+      else if (ch != (unsigned char) delim)
+	{
+	  set(ios::failbit);
+	  sb->sungetc(); // Leave delimiter unread.
+	}
+    }
+  else
+    ch = EOF;
+  buf[_gcount] = '\0';
+  if (ch == (unsigned char)delim)
+    _gcount++; // The delimiter is counted in the gcount().
+  return *this;
+}
+
+istream& istream::get(char* buf, int len, char delim)
+{
+  _gcount = 0;
+  if (len <= 0)
+    {
+      set(ios::failbit);
+      return *this;
+    }
+  if (ipfx1())
+    {
+      streambuf *sbuf = rdbuf();
+      long count = _IO_getline(sbuf, buf, len - 1, delim, -1);
+      if (count == 0 && sbuf->sgetc() == EOF)
+	set(ios::failbit|ios::eofbit);
+      else
+	_gcount = count;
+    }
+  buf[_gcount] = '\0';
+  return *this;
+}
+
+
+// from Doug Schmidt
+
+#define CHUNK_SIZE 512
+
+/* Reads an arbitrarily long input line terminated by a user-specified
+   TERMINATOR.  Super-nifty trick using recursion avoids unnecessary calls
+   to NEW! */
+
+char *_sb_readline (streambuf *sb, long& total, char terminator) 
+{
+    char buf[CHUNK_SIZE];
+    char *ptr;
+    int ch;
+    
+    _IO_size_t count = _IO_getline(sb, buf, CHUNK_SIZE, terminator, -1);
+    ch = sb->sbumpc();
+    long old_total = total;
+    total += count;
+    if (ch != EOF && ch != terminator) {
+	total++; // Include ch in total.
+	ptr = _sb_readline(sb, total, terminator);
+	if (ptr) {
+	    memcpy(ptr + old_total, buf, count);
+	    ptr[old_total+count] = ch;
+	}
+	return ptr;
+    }
+    
+    ptr = new char[total+1];
+    if (ptr != NULL) {
+	ptr[total] = '\0';
+	memcpy(ptr + total - count, buf, count);
+    } 
+    return ptr;
+}
+
+/* Reads an arbitrarily long input line terminated by TERMINATOR.
+   This routine allocates its own memory, so the user should
+   only supply the address of a (char *). */
+
+istream& istream::gets(char **s, char delim /* = '\n' */)
+{
+    if (ipfx1()) {
+	long size = 0;
+	streambuf *sb = rdbuf();
+	*s = _sb_readline (sb, size, delim);
+	_gcount = *s ? size : 0;
+	if (sb->_flags & _IO_EOF_SEEN) {
+	    set(ios::eofbit);
+	    if (_gcount == 0)
+		set(ios::failbit);
+	}
+    }
+    else {
+	_gcount = 0;
+	*s = NULL;
+    }
+    return *this;
+}