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/*
* Copyright (c) 2002 by The XFree86 Project, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of the XFree86 Project shall
* not be used in advertising or otherwise to promote the sale, use or other
* dealings in this Software without prior written authorization from the
* XFree86 Project.
*
* Author: Paulo César Pereira de Andrade
*/
/* $XFree86$ */
#ifndef Lisp_io_h
#define Lisp_io_h
#include "lisp/private.h"
#define FILE_READ 0x01
#define FILE_WRITE 0x02
#define FILE_IO 0x03
#define FILE_APPEND 0x06 /* append mode, write bit also set */
#define FILE_BUFFERED 0x08 /* force buffered mode */
#define FILE_UNBUFFERED 0x10 /* force unbuffered mode */
#define FILE_BINARY 0x20
/*
* Types
*/
typedef ssize_t (*io_write_fn)(int, const void*, size_t);
struct _LispFile {
char *buffer;
int line; /* input line number */
int column; /* output column number */
int descriptor;
int length; /* number of bytes used */
int offset; /* read/write offset */
int unget : 8; /* unread char */
unsigned int readable : 1;
unsigned int writable : 1;
unsigned int regular : 1; /* regular file */
unsigned int buffered : 1;
unsigned int available : 1; /* unget field holds a char */
unsigned int nonblock : 1; /* in nonblock mode */
unsigned int binary : 1; /* if set, don't calculate column/line-number */
io_write_fn io_write;
};
struct _LispString {
char *string;
int line; /* input line number */
int column; /* output column number */
int space; /* number of bytes alocated */
int length; /* number of bytes used */
int input; /* input offset, for read operations */
int output; /* output offset, for write operations */
unsigned int fixed : 1; /* if set, don't try to reallocate string */
unsigned int binary : 1; /* if set, don't calculate column/line-number */
};
/*
* Prototypes
*/
/* higher level functions */
int LispGet(void);
int LispUnget(int);
void LispPushInput(LispObj*);
void LispPopInput(LispObj*);
/* functions that read/write using the LispFile structure */
LispFile *LispFdopen(int, int);
LispFile *LispFopen(char*, int);
void LispFclose(LispFile*);
int LispFflush(LispFile*);
int LispFungetc(LispFile*, int);
int LispFgetc(LispFile*);
int LispFputc(LispFile*, int);
char *LispFgets(LispFile*, char*, int);
int LispFputs(LispFile*, char*);
int LispFread(LispFile*, void*, int);
int LispFwrite(LispFile*, void*, int);
int LispRename(char*, char*);
int LispUnlink(char*);
/* io wrappers */
io_write_fn LispSetFileWrite(LispFile*, io_write_fn);
/* functions that read/write using the LispString structure */
int LispSgetc(LispString*);
int LispSputc(LispString*, int);
int LispSputs(LispString*, char*);
int LispSwrite(LispString*, void*, int);
char *LispGetSstring(LispString*, int*);
#endif /* Lisp_io_h */
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