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diff --git a/Build/source/texk/web2c/luatexdir/luasocket/src/buffer.h b/Build/source/texk/web2c/luatexdir/luasocket/src/buffer.h
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+#ifndef BUF_H
+#define BUF_H
+/*=========================================================================*\
+* Input/Output interface for Lua programs
+* LuaSocket toolkit
+*
+* Line patterns require buffering. Reading one character at a time involves
+* too many system calls and is very slow. This module implements the
+* LuaSocket interface for input/output on connected objects, as seen by
+* Lua programs.
+*
+* Input is buffered. Output is *not* buffered because there was no simple
+* way of making sure the buffered output data would ever be sent.
+*
+* The module is built on top of the I/O abstraction defined in io.h and the
+* timeout management is done with the timeout.h interface.
+\*=========================================================================*/
+#include "lua.h"
+
+#include "io.h"
+#include "timeout.h"
+
+/* buffer size in bytes */
+#define BUF_SIZE 8192
+
+/* buffer control structure */
+typedef struct t_buffer_ {
+ double birthday; /* throttle support info: creation time, */
+ size_t sent, received; /* bytes sent, and bytes received */
+ p_io io; /* IO driver used for this buffer */
+ p_timeout tm; /* timeout management for this buffer */
+ size_t first, last; /* index of first and last bytes of stored data */
+ char data[BUF_SIZE]; /* storage space for buffer data */
+} t_buffer;
+typedef t_buffer *p_buffer;
+
+int buffer_open(lua_State *L);
+void buffer_init(p_buffer buf, p_io io, p_timeout tm);
+int buffer_meth_send(lua_State *L, p_buffer buf);
+int buffer_meth_receive(lua_State *L, p_buffer buf);
+int buffer_meth_getstats(lua_State *L, p_buffer buf);
+int buffer_meth_setstats(lua_State *L, p_buffer buf);
+int buffer_isempty(p_buffer buf);
+
+#endif /* BUF_H */