1 files changed, 49 insertions, 0 deletions
diff --git a/pl/pltoputl.h b/pl/pltoputl.h
new file mode 100644
index 000000000..aeb90634e
--- /dev/null
+++ b/pl/pltoputl.h
@@ -0,0 +1,49 @@
+/* Portions Copyright (C) 2001 artofcode LLC.
+   Portions Copyright (C) 1996, 2001 Artifex Software Inc.
+   Portions Copyright (C) 1988, 2000 Aladdin Enterprises.
+   This software is based in part on the work of the Independent JPEG Group.
+   All Rights Reserved.
+
+   This software is distributed under license and may not be copied, modified
+   or distributed except as expressly authorized under the terms of that
+   license.  Refer to licensing information at http://www.artifex.com/ or
+   contact Artifex Software, Inc., 101 Lucas Valley Road #110,
+   San Rafael, CA  94903, (415)492-9861, for further information. */
+/*$Id$ */
+
+/* pltoputl.h   Useful utilities for use w/pltop.c interface */
+
+#ifndef pltoputl_INCLUDED
+#  define pltoputl_INCLUDED
+
+#include "scommon.h"
+
+/* -------------- Read file cursor operations ---------- */
+/*
+ * Stream-driven reading cursor
+ */
+typedef struct pl_top_cursor_s {
+	stream_cursor_read         cursor;        /* cursor actually used to read */
+	FILE                       *strm;         /* stream that data comes from */
+	unsigned char              *buffer;       /* buffer to use */
+   unsigned                   buffer_length; /* # bytes in buffer */
+	int                        status;        /* if <=0, status to report to caller */
+} pl_top_cursor_t;
+
+/* Init a read cursor w/specified open stream */
+int pl_top_cursor_init(pl_top_cursor_t *cursor, FILE *strm, byte *buffer, unsigned bufferLength);
+
+/* Refill from input */
+int pl_top_cursor_next(pl_top_cursor_t *cursor);
+
+/* Close read cursor */
+int pl_top_cursor_close(pl_top_cursor_t *cursor);
+
+/* Deinit a read cursor */
+void pl_top_cursor_dnit(pl_top_cursor_t *cursor);
+
+/* renew a cursor if EOD condition has been set.  This can happen if a
+   PDL does not consume any data even though data is avaiable */
+void pl_renew_cursor_status(pl_top_cursor_t *cursor);
+
+#endif				/* pltoputl_INCLUDED */