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rgentlem |
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/*
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maechler |
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* R : A Computer Language for Statistical Data Analysis
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rgentlem |
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* Copyright (C) 1997 Robert Gentleman and Ross Ihaka
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ripley |
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* Copyright (C) 2005 R Core Team
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rgentlem |
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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ripley |
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* along with this program; if not, a copy is available at
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ripley |
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* https://www.R-project.org/Licenses/
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rgentlem |
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*/
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ripley |
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/* Internal header, not installed */
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ripley |
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#ifndef R_IOSTUFF_H
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#define R_IOSTUFF_H
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rgentlem |
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/*
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* I/O Support for Consoles and Character Vectors
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*
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* This code provides analogues for the stdio routines "fgetc" and
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ripley |
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* (formerly) "ungetc" for "consoles" and character vectors. These routines
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rgentlem |
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* are used for parsing input from the console window and character
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* vectors.
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*/
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ripley |
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#include <Defn.h>
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rgentlem |
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#include <stdio.h>
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#define IOBSIZE 4096
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typedef struct BufferListItem {
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pd |
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unsigned char buf[IOBSIZE];
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rgentlem |
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struct BufferListItem *next;
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} BufferListItem;
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typedef struct IoBuffer {
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BufferListItem *start_buf; /* First buffer item */
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BufferListItem *write_buf; /* Write pointer location */
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pd |
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unsigned char *write_ptr; /* Write pointer location */
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rgentlem |
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int write_offset; /* Write pointer location */
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BufferListItem *read_buf; /* Read pointer location */
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pd |
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unsigned char *read_ptr; /* Read pointer location */
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rgentlem |
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int read_offset; /* Read pointer location */
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} IoBuffer;
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typedef struct TextBuffer {
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ripley |
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void *vmax; /* Memory stack top */
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maechler |
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unsigned char *buf; /* Line buffer */
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unsigned char *bufp; /* Line buffer location */
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rgentlem |
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SEXP text; /* String Vector */
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int ntext; /* Vector length */
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int offset; /* Offset within vector */
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} TextBuffer;
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maechler |
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#ifndef __MAIN__
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extern
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ripley |
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#else
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attribute_hidden
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maechler |
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#endif
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IoBuffer R_ConsoleIob; /* Console IO Buffer */
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maechler |
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/*- some of these really could be void */
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rgentlem |
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int R_IoBufferInit(IoBuffer*);
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int R_IoBufferFree(IoBuffer*);
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int R_IoBufferReadReset(IoBuffer*);
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int R_IoBufferWriteReset(IoBuffer*);
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int R_IoBufferGetc(IoBuffer*);
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int R_IoBufferPutc(int, IoBuffer*);
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int R_IoBufferPuts(char*, IoBuffer*);
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murdoch |
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int R_IoBufferReadOffset(IoBuffer*);
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rgentlem |
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int R_TextBufferInit(TextBuffer*, SEXP);
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int R_TextBufferFree(TextBuffer*);
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int R_TextBufferGetc(TextBuffer*);
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ripley |
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#endif /* not R_IOSTUFF_H */
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