1 files changed, 104 insertions, 0 deletions
diff --git a/librols/stdio/filereopen.c b/librols/stdio/filereopen.c
new file mode 100644
index 0000000..537edfc
--- /dev/null
+++ b/librols/stdio/filereopen.c
@@ -0,0 +1,104 @@
+/*
+ * 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.
+ *
+ */
+
+/* @(#)filereopen.c	1.15 04/08/08 Copyright 1986, 1995 J. Schilling */
+/*
+ *	open new file on old stream
+ *
+ *	Copyright (c) 1986, 1995 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"
+
+/*
+ * Note that because of a definition in schilyio.h we are using fseeko()/ftello()
+ * instead of fseek()/ftell() if available.
+ */
+
+LOCAL	char	*fmtab[] = {
+			"",	/* 0	FI_NONE				*/
+			"r",	/* 1	FI_READ				*/
+			"r+",	/* 2	FI_WRITE		**1)	*/
+			"r+",	/* 3	FI_READ  | FI_WRITE		*/
+			"b",	/* 4	FI_NONE  | FI_BINARY		*/
+			"rb",	/* 5	FI_READ  | FI_BINARY		*/
+			"r+b",	/* 6	FI_WRITE | FI_BINARY	**1)	*/
+			"r+b",	/* 7	FI_READ  | FI_WRITE | FI_BINARY	*/
+
+/* + FI_APPEND	*/	"",	/* 0	FI_NONE				*/
+/* ...		*/	"r",	/* 1	FI_READ				*/
+			"a",	/* 2	FI_WRITE		**1)	*/
+			"a+",	/* 3	FI_READ  | FI_WRITE		*/
+			"b",	/* 4	FI_NONE  | FI_BINARY		*/
+			"rb",	/* 5	FI_READ  | FI_BINARY		*/
+			"ab",	/* 6	FI_WRITE | FI_BINARY	**1)	*/
+			"a+b",	/* 7	FI_READ  | FI_WRITE | FI_BINARY	*/
+		};
+/*
+ * NOTES:
+ *	1)	there is no fopen() mode that opens for writing
+ *		without creating/truncating at the same time.
+ *
+ *	"w"	will create/trunc files with fopen()
+ *	"a"	will create files with fopen()
+ */
+
+EXPORT FILE *
+filereopen(name, mode, fp)
+	const char	*name;
+	const char 	*mode;
+	FILE		*fp;
+{
+	int	ret;
+	int	omode = 0;
+	int	flag = 0;
+
+	if (!_cvmod(mode, &omode, &flag))
+		return ((FILE *) NULL);
+
+	/*
+	 * create/truncate file if necessary
+	 */
+	if ((ret = _openfd(name, omode)) < 0)
+		return ((FILE *) NULL);
+	close(ret);
+
+	fp = freopen(name,
+		fmtab[flag & (FI_READ | FI_WRITE | FI_BINARY | FI_APPEND)], fp);
+
+	if (fp != (FILE *) NULL) {
+		set_my_flag(fp, 0); /* must clear it if fp is reused */
+
+		if (flag & FI_APPEND) {
+			(void) fseek(fp, (off_t)0, SEEK_END);
+		}
+		if (flag & FI_UNBUF) {
+			setbuf(fp, NULL);
+			add_my_flag(fp, _IOUNBUF);
+		}
+	}
+	return (fp);
+}