home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Resource Library: Graphics
/
graphics-16000.iso
/
msdos
/
viewers
/
pcshow
/
dfi.h
< prev
next >
Wrap
C/C++ Source or Header
|
1991-07-01
|
8KB
|
247 lines
/*------------------------------------------------------------------------------
* File: dfi.h
* Purpose: HDF internal header file
* Invokes: stdio.h, sys/file.h
* Contents:
* Compilation parameters
* Machine-dependent definitions
* Flexibility definitions: i/o buffering, dynamic memory, structure i/o
* Size parameters
* Remarks: To port to a new system, only dfi.h and Makefile need be modified.
* This file is included with user programs, but users do not see it.
*----------------------------------------------------------------------------*/
#ifndef DF_MAGICK /* avoid re-inclusion */
#define DF_MAGICK "\016\003\023\001" /* ^N^C^S^A */
#ifndef FILE
#include <stdio.h>
#endif FILE
/*--------------------------------------------------------------------------*/
/* Compilation Parameters for Flexibility and Portability */
/* modify this line to allow for machine dependencies */
#define PC
/* modify this line for buffered/unbuffered i/o */
#define DF_BUFFIO
/* modify this line for dynamic/static memory allocation */
#define DF_DYNAMIC
/* modify this line if structures cannot be read/written as is */
#define DF_STRUCTOK
/*--------------------------------------------------------------------------*/
/* MT/NT constants */
#define DFMT_SUN 0x1111
#define DFMT_ALLIANT 0x1111
#define DFMT_UNICOS 0x3331
#define DFMT_CTSS 0x3331
#define DFMT_VAX 0x2221
#define DFMT_PC 0x1141 /* note byte swapping */
#define DFMT_MAC 0x1111
#define DFNT_VERSION 1 /* current version of NT info */
/* type info codes */
#define DFNT_UINT 1
#define DFNT_INT 2
#define DFNT_UCHAR 3
#define DFNT_CHAR 4
#define DFNT_FLOAT 5
#define DFNT_DOUBLE 6
/* class info codes for int */
#define DFNTI_MBO 1 /* Motorola byte order 2's compl */
#define DFNTI_VBO 2 /* Vax byte order 2's compl */
#define DFNTI_IBO 4 /* Intel byte order 2's compl */
/* class info codes for float */
#define DFNTF_IEEE 1 /* IEEE format */
#define DFNTF_VAX 2 /* Vax format */
#define DFNTF_CRAY 3 /* Cray format */
/* class info codes for char */
#define DFNTC_BYTE 0 /* bitwise/numeric field */
#define DFNTC_ASCII 1 /* ASCII */
#define DFNTC_EBCDIC 5 /* EBCDIC */
/*--------------------------------------------------------------------------*/
/* Machine dependencies */
#ifdef PC
#ifndef O_RDONLY
#include <fcntl.h>
#define L_INCR 1
#endif O_RDONLY
#define int16 int
#define uint16 unsigned int
#define int32 long int
#define DFmovmem(from, to, len) memcpy(to, from, len)
#undef DF_STRUCTOK /* structure writing will not work on PC */
#undef DF_BUFFIO /* unbuffered i/o is faster */
long longswap(); /* provided elsewhere */
/* in the next 3 lines, p is recast so right number of bytes passed */
/* ### Note that all calls modify p. Need to use temporary ptr */
#define UINT16READ(p, x) { x = intswap(*(int *)p); p+=2; }
#define INT16READ(p, x) { x = intswap(*(int *)p); p+=2; }
#define INT32READ(p, x) { x = longswap(*(long *)p); p+=4; }
#define UINT16WRITE(p, x) { *(int *)p = intswap(x); p+=2; }
#define INT16WRITE(p, x) { *(int *)p = intswap(x); p+=2; }
#define INT32WRITE(p, x) { *(long *)p = longswap(x); p+=4; }
#define DF_CREAT(name, prot) creat(name, prot)
#define DF_MT DFMT_PC
#endif PC
#ifdef UNICOS
#ifndef O_RDONLY
#include <sys/fcntl.h> /* for unbuffered i/o stuff */
#define L_INCR 1
#endif O_RDONLY
#define int16 int
#define uint16 int
#define int32 int
#define DFmovmem(from, to, len) memcpy(to, from, len)
#undef DF_STRUCTOK /* cannot directly read/write structures */
#define UINT16READ(p, x) { x = ((*p++) & 255)<<8; x |= (*p++) & 255; }
#define INT16READ(p, x) { x = (*p++)<<8; x |= (*p++) & 255; }
#define INT32READ(p, x) { x = (*p++)<<24; x|=((*p++) & 255)<<16; \
x|=((*p++) & 255)<<8; x|=(*p++) & 255; }
#define UINT16WRITE(p, x) { *p++ = (x>>8) & 255; *p++ = x & 255; }
#define INT16WRITE(p, x) { *p++ = (x>>8) & 255; *p++ = x & 255; }
#define INT32WRITE(p, x) { *p++ = (x>>24) & 255; *p++ = (x>>16) & 255; \
*p++ = (x>>8) & 255; *p++ = x & 255; }
#define DF_CREAT(name, prot) creat(name, prot)
#define DF_MT DFMT_UNICOS
#endif UNICOS
#ifdef SUN
#include <sys/file.h> /* for unbuffered i/o stuff */
#define int16 short
#define uint16 unsigned short
#define int32 long
#define DFmovmem(from, to, len) memcpy(to, from, len)
#ifndef DF_STRUCTOK
#define UINT16READ(p, x) { x = ((*p++) & 255)<<8; x |= (*p++) & 255; }
#define INT16READ(p, x) { x = (*p++)<<8; x |= (*p++) & 255; }
#define INT32READ(p, x) { x = (*p++)<<24; x|=((*p++) & 255)<<16; \
x|=((*p++) & 255)<<8; x|=(*p++) & 255; }
#define UINT16WRITE(p, x) { *p++ = (x>>8) & 255; *p++ = x & 255; }
#define INT16WRITE(p, x) { *p++ = (x>>8) & 255; *p++ = x & 255; }
#define INT32WRITE(p, x) { *p++ = (x>>24) & 255; *p++ = (x>>16) & 255; \
*p++ = (x>>8) & 255; *p++ = x & 255; }
#endif DF_STRUCTOK
#define DF_CREAT(name, prot) creat(name, prot)
#define DF_MT DFMT_SUN
#endif SUN
#ifdef ALLIANT
#include <sys/file.h> /* for unbuffered i/o stuff */
#define int16 short
#define uint16 unsigned short
#define int32 long
#define DFmovmem(from, to, len) bcopy(from, to, len)
#ifndef DF_STRUCTOK
#define UINT16READ(p, x) { DFmovmem(p, &x, 2); p+=2; }
#define INT16READ(p, x) { DFmovmem(p, &x, 2); p+=2; }
#define INT32READ(p, x) { DFmovmem(p, &x, 4); p+=4; }
#define UINT16WRITE(p, x) { DFmovmem(&x, p, 2); p+=2; }
#define INT16WRITE(p, x) { DFmovmem(&x, p, 2); p+=2; }
#define INT32WRITE(p, x) { DFmovmem(&x, p, 4); p+=4; }
#endif DF_STRUCTOK
#define DF_CREAT(name, prot) creat(name, prot)
#define DF_MT DFMT_ALLIANT
#endif ALLIANT
#ifdef MAC
#include <Files.h> /* for unbuffered i/o stuff */
#define int16 short
#define uint16 unsigned short
#define int32 long
#define DFmovmem(from, to, len) memcpy(to, from, len)
#ifndef DF_STRUCTOK
#define UINT16READ(p, x) { DFmovmem(p, &x, 2); p+=2; }
#define INT16READ(p, x) { DFmovmem(p, &x, 2); p+=2; }
#define INT32READ(p, x) { DFmovmem(p, &x, 4); p+=4; }
#define UINT16WRITE(p, x) { DFmovmem(&x, p, 2); p+=2; }
#define INT16WRITE(p, x) { DFmovmem(&x, p, 2); p+=2; }
#define INT32WRITE(p, x) { DFmovmem(&x, p, 4); p+=4; }
#endif DF_STRUCTOK
#define DF_CREAT(name, prot) creat(name, prot)
#define DF_MT DFMT_MAC
#endif MAC
/*--------------------------------------------------------------------------*/
/* Flexibility parameters */
#ifdef DF_BUFFIO /* set all calls to do buffered I/O */
#define DF_OPEN(x,y) fopen(x,y)
#define DF_CLOSE(x) fclose(x)
#define DF_SEEK(x,y,z) fseek(x,y,z)
#define DF_SKEND(x,y,z) fseek(x,y,z)
#define DF_TELL(x) ftell(x)
#define DF_READ(a,b,c,d) fread(a,b,c,d)
#define DF_WRITE(a,b,c,d) fwrite(a,b,c,d)
#define DF_FLUSH(a) fflush(a)
#ifdef PC
#define DF_RDACCESS "rb"
#define DF_WRACCESS "rb+"
#else PC
#define DF_RDACCESS "r"
#define DF_WRACCESS "r+"
#endif PC
#else DF_BUFFIO /* unbuffered i/o */
#define DF_OPEN(x,y) open(x,y)
#define DF_CLOSE(x) close(x)
#define DF_SEEK(x,y,z) lseek(x,y,z)
#define DF_SKEND(x,y,z) lseek(x,-1*y,z)
#define DF_TELL(x) lseek(x,0L,L_INCR)
#define DF_READ(a,b,c,d) read(d,a,b*c)
#define DF_WRITE(a,b,c,d) write(d,a,b*c)
#define DF_FLUSH(a) /* no need to flush */
#ifdef PC
#define DF_RDACCESS O_RDONLY | O_RAW
#define DF_WRACCESS O_RDWR | O_RAW
#else PC
#define DF_RDACCESS O_RDONLY
#define DF_WRACCESS O_RDWR
#endif PC
#endif DF_BUFFIO
/* if not allocating memory dynamically, need buffer for compression */
#ifndef DF_DYNAMIC
#define DF_TBUF
#endif DF_DYNAMIC
/* if reading/writing structures not ok, need buffer for conversion */
#ifndef DF_TBUF
#ifndef DF_STRUCTOK
#define DF_TBUF
#endif DF_STRUCTOK
#endif DF_TBUF
/* set buffer size */
#ifdef DF_TBUF
#define DF_TBUFSZ 10000
#ifndef DFMASTER
extern
#endif DFMASTER
unsigned char DFtbuf[DF_TBUFSZ];
#endif DF_TBUF
/*--------------------------------------------------------------------------*/
/* Size parameters */
#define DF_MAXDFS 32 /* How many DF's can be open at once */
#define DF_DEFAULTDDS 16 /* How many DD's a file has by default */
#endif DF_MAGICK