Imported Upstream version 1.1.11upstream/1.1.11upstream

1 files changed, 142 insertions, 0 deletions

diff --git a/librols/stdio/flag.c b/librols/stdio/flag.c
new file mode 100644
index 0000000..a9571c6
--- /dev/null
+++ b/librols/stdio/flag.c
@@ -0,0 +1,142 @@
+/*
+ * This file has been modified for the cdrkit suite.
+ *
+ * The behaviour and appearence of the program code below can differ to a major
+ * extent from the version distributed by the original author(s).
+ *
+ * For details, see Changelog file distributed with the cdrkit package. If you
+ * received this file from another source then ask the distributing person for
+ * a log of modifications.
+ *
+ */
+
+/* @(#)flag.c	2.10 05/06/12 Copyright 1986-2003 J. Schilling */
+/*
+ *	Copyright (c) 1986-2003 J. Schilling
+ */
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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; see the file COPYING.  If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include "schilyio.h"
+#include <stdxlib.h>
+
+#ifdef	DO_MYFLAG
+
+#define	FL_INIT	10
+
+EXPORT	int	_io_glflag;		/* global default flag */
+LOCAL	int	_fl_inc = 10;		/* increment for expanding flag struct */
+EXPORT	int	_fl_max = FL_INIT;	/* max fd currently in _io_myfl */
+LOCAL	_io_fl	_io_smyfl[FL_INIT];	/* initial static space */
+EXPORT	_io_fl	*_io_myfl = _io_smyfl;	/* init to static space */
+
+LOCAL int _more_flags	__PR((FILE *));
+
+LOCAL int
+_more_flags(fp)
+	FILE	*fp;
+{
+	register int	f = fileno(fp);
+	register int	n = _fl_max;
+	register _io_fl	*np;
+
+	while (n <= f)
+		n += _fl_inc;
+
+	if (_io_myfl == _io_smyfl) {
+		np = (_io_fl *) malloc(n * sizeof (*np));
+		fillbytes(np, n * sizeof (*np), '\0');
+		movebytes(_io_smyfl, np, sizeof (_io_smyfl)/sizeof (*np));
+	} else {
+		np = (_io_fl *) realloc(_io_myfl, n * sizeof (*np));
+		if (np)
+			fillbytes(&np[_fl_max], (n-_fl_max)*sizeof (*np), '\0');
+	}
+	if (np) {
+		_io_myfl = np;
+		_fl_max = n;
+		return (_io_get_my_flag(fp));
+	} else {
+		return (_IONORAISE);
+	}
+}
+
+EXPORT int
+_io_get_my_flag(fp)
+	register FILE	*fp;
+{
+	register int	f = fileno(fp);
+	register _io_fl	*fl;
+
+	if (f >= _fl_max)
+		return (_more_flags(fp));
+
+	fl = &_io_myfl[f];
+
+	if (fl->fl_io == 0 || fl->fl_io == fp)
+		return (fl->fl_flags);
+
+	while (fl && fl->fl_io != fp)
+		fl = fl->fl_next;
+
+	if (fl == 0)
+		return (0);
+
+	return (fl->fl_flags);
+}
+
+EXPORT void
+_io_set_my_flag(fp, flag)
+	FILE	*fp;
+	int	flag;
+{
+	register int	f = fileno(fp);
+	register _io_fl	*fl;
+	register _io_fl	*fl2;
+
+	if (f >= _fl_max)
+		(void) _more_flags(fp);
+
+	fl = &_io_myfl[f];
+
+	if (fl->fl_io != (FILE *)0) {
+		fl2 = fl;
+
+		while (fl && fl->fl_io != fp)
+			fl = fl->fl_next;
+		if (fl == 0) {
+			if ((fl = (_io_fl *) malloc(sizeof (*fl))) == 0)
+				return;
+			fl->fl_next = fl2->fl_next;
+			fl2->fl_next = fl;
+		}
+	}
+	fl->fl_io = fp;
+	fl->fl_flags = flag;
+}
+
+EXPORT void
+_io_add_my_flag(fp, flag)
+	FILE	*fp;
+	int	flag;
+{
+	int	oflag = _io_get_my_flag(fp);
+
+	oflag |= flag;
+
+	_io_set_my_flag(fp, oflag);
+}
+
+#endif	/* DO_MYFLAG */