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- /*
- * Stdio_Setup.c --
- *
- * Source code for the "Stdio_Setup" library procedure.
- *
- * Copyright 1988 Regents of the University of California
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for any purpose and without
- * fee is hereby granted, provided that the above copyright
- * notice appear in all copies. The University of California
- * makes no representations about the suitability of this
- * software for any purpose. It is provided "as is" without
- * express or implied warranty.
- */
-
- #ifndef lint
- static char rcsid[] = "$Header: /sprite/src/lib/c/stdio/RCS/Stdio_Setup.c,v 1.2 90/10/11 22:10:13 kupfer Exp $ SPRITE (Berkeley)";
- #endif not lint
-
- #include "stdio.h"
-
- /*
- *----------------------------------------------------------------------
- *
- * Stdio_Setup --
- *
- * This procedure is called by a client to initialize the information
- * associated with a stream. This procedure is used by special-purpose
- * clients that provide their own low-level I/O; for normal file I/O,
- * use fopen, freopen, or fdopen.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The contents of stream are modified to set up for buffered I/O.
- * After this call has been made, the stream may be used in other
- * calls (e.g. getc and putc) to actually perform I/O.
- *
- *----------------------------------------------------------------------
- */
-
- void
- Stdio_Setup(stream, readable, writable, buffer, bufferSize, readProc,
- writeProc, closeProc, clientData)
- register FILE * stream; /* Stream to be initialized. */
- int readable; /* Non-zero means stream is to be readable. */
- int writable; /* Non-zero means stream is to be writable.
- * It's OK for a stream to be both readable
- * and writable.
- */
- unsigned char *buffer; /* Pointer to buffer space for the stream.
- * NULL means the stream will initially be
- * unbuffered. */
- int bufferSize; /* Size of buffer area. */
- void (*readProc) _ARGS_((FILE *stream));
- /* Procedure to perform input for stream. */
- void (*writeProc) _ARGS_((FILE *stream, Boolean flush));
- /* Procedure to perform output for stream. */
- int (*closeProc) _ARGS_((FILE *stream));
- /* Procedure to close stream. NULL means
- * there aren't any stream-dependent actions
- * to perform on close. */
- ClientData clientData; /* Client-specific information to store in
- * stream. */
- {
- stream->lastAccess = buffer-1;
- stream->readCount = 0;
- stream->writeCount = 0;
- stream->buffer = buffer;
- stream->bufSize = bufferSize;
- stream->readProc = readProc;
- stream->writeProc = writeProc;
- stream->closeProc = closeProc;
- stream->clientData = clientData;
- stream->status = 0;
- stream->flags = 0;
- if (readable) {
- stream->flags |= STDIO_READ;
- }
- if (writable) {
- stream->flags |= STDIO_WRITE;
- stream->writeCount = bufferSize;
- }
- }
-