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/*
* Copyright (C) 2003 Serge van den Boom
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
* Nota bene: later versions of the GNU General Public License do not apply
* to this program.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef LIBS_UIO_UIOSTREAM_H_
#define LIBS_UIO_UIOSTREAM_H_
typedef struct uio_Stream uio_Stream;
#include "io.h"
#include <stdarg.h>
uio_Stream *uio_fopen(uio_DirHandle *dir, const char *path, const char *mode);
int uio_fclose(uio_Stream *stream);
size_t uio_fread(void *buf, size_t size, size_t nmemb, uio_Stream *stream);
char *uio_fgets(char *buf, int size, uio_Stream *stream);
int uio_fgetc(uio_Stream *stream);
#define uio_getc uio_fgetc
int uio_ungetc(int c, uio_Stream *stream);
int uio_vfprintf(uio_Stream *stream, const char *format, va_list args);
int uio_fprintf(uio_Stream *stream, const char *format, ...);
int uio_fputc(int c, uio_Stream *stream);
#define uio_putc uio_fputc
int uio_fputs(const char *s, uio_Stream *stream);
int uio_fseek(uio_Stream *stream, long offset, int whence);
long uio_ftell(uio_Stream *stream);
size_t uio_fwrite(const void *buf, size_t size, size_t nmemb,
uio_Stream *stream);
int uio_fflush(uio_Stream *stream);
int uio_feof(uio_Stream *stream);
int uio_ferror(uio_Stream *stream);
void uio_clearerr(uio_Stream *stream);
uio_Handle *uio_streamHandle(uio_Stream *stream);
/* *** Internal definitions follow *** */
#ifdef uio_INTERNAL
#include <sys/types.h>
#include <fcntl.h>
#include "iointrn.h"
typedef enum {
uio_StreamOperation_none,
uio_StreamOperation_read,
uio_StreamOperation_write
} uio_StreamOperation;
struct uio_Stream {
char *buf;
// Start of the buffer.
char *dataStart;
// Start of the part of the buffer that is in use.
char *dataEnd;
// Start of the unused part of the buffer.
char *bufEnd;
// End of the buffer.
// INV: buf <= dataStart <= dataEnd <= bufEnd
// INV: if 'operation == uio_StreamOperation_write' then buf == dataStart
uio_Handle *handle;
int status;
#define uio_Stream_STATUS_OK 0
#define uio_Stream_STATUS_EOF 1
#define uio_Stream_STATUS_ERROR 2
uio_StreamOperation operation;
// What was the last action (reading or writing). This
// determines whether the buffer is a read or write buffer.
int openFlags;
// Flags used for opening the file.
};
#endif /* uio_INTERNAL */
#endif /* LIBS_UIO_UIOSTREAM_H_ */
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