diff -r c80c910fe191 -r abae4669fba7 ucx/buffer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ucx/buffer.h	Wed Oct 10 09:54:57 2012 +0200
@@ -0,0 +1,52 @@
+#ifndef BUFFER_H
+#define	BUFFER_H
+
+#include <stdio.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+
+/* the user shall not modify values */
+typedef struct UcxBuffer UcxBuffer;
+
+UcxBuffer *ucx_buffer_new(void *space, size_t length);
+void ucx_buffer_free(UcxBuffer* buffer);
+
+/*
+ * Moves the position of the buffer to a new position relative to whence.
+ *
+ * SEEK_SET marks the start of the buffer
+ * SEEK_CUR marks the current position
+ * SEEK_END marks the first 0-byte in the buffer
+ *
+ * ucx_memseek returns 0 on success and -1 if the new position is beyond the
+ * bounds of the allocated buffer. In that case the position of the buffer
+ * remains unchanged.
+ *
+ */
+int ucx_buffer_seek(UcxBuffer *buffer, off_t offset, int whence);
+size_t ucx_buffer_tell(UcxBuffer *buffer);
+
+/*
+ * returns non-zero, iff the current buffer position has exceeded the last
+ * available byte of the underlying buffer
+ *
+ */
+int ucx_buffer_eof(UcxBuffer *buffer);
+
+size_t ucx_bufio(void *d, size_t s, size_t n, UcxBuffer* b, _Bool read);
+#define ucx_buffer_write(data, itemsize, nitems, buffer) \
+    ucx_bufio(data, itemsize, nitems, buffer, 0)
+#define ucx_buffer_read(data, itemsize, nitems, buffer) \
+        ucx_bufio(data, itemsize, nitems, buffer, 1)
+int ucx_buffer_putc(UcxBuffer *b, int c);
+int ucx_buffer_getc(UcxBuffer *b);
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* BUFFER_H */
+