1 files changed, 61 insertions, 0 deletions
diff --git a/sys/libc/fopen.c b/sys/libc/fopen.c
new file mode 100644
index 00000000..f9fe16ae
--- /dev/null
+++ b/sys/libc/fopen.c
@@ -0,0 +1,61 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+*/
+
+#define	import_spp
+#define	import_libc
+#define	import_xnames
+#define	import_stdio
+#include <iraf.h>
+
+
+/* FOPEN -- Open a file with the given access mode and file type.  The file type
+** (text or binary) is specified with an optional, non UNIX standard character
+** "t" or "b" in the modestring.  The default is text file if no type is given.
+*/
+FILE *
+fopen (
+  char	*fname,			/* vfn of file			*/
+  char	*modestr		/* access mode [and type]	*/
+)
+{
+	XINT	x_filetype, x_filemode;
+	int 	fd;
+
+
+	/* Get file type.
+	 */
+	switch (modestr[1]) {
+	case 't':
+	case EOS:
+	    x_filetype = TEXT_FILE;
+	    break;
+	case 'b':
+	    x_filetype = BINARY_FILE;
+	    break;
+	default:
+	    return (NULL);
+	}
+
+	/* Determine file access mode.
+	 */
+	switch (modestr[0]) {
+	case 'r':
+	    x_filemode = READ_ONLY;
+	    break;
+	case 'w':
+	    x_filemode = NEW_FILE;
+	    break;
+	case 'a':
+	    x_filemode = APPEND;
+	    break;
+	default:
+	    return (NULL);
+	}
+
+	/* Open file.
+	 */
+	iferr (fd = OPEN (c_sppstr(fname), &x_filemode, &x_filetype))
+	    return (NULL);
+	else
+	    return (FDTOFP(fd));
+}