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PDP-10 Archives
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SRI_NIC_PERM_FS_1_19910112
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c/include/stdio.h
There are 15 other files named stdio.h in the archive. Click here to see a list.
/* <STDIO.H> - Standard I/O definitions
**
** (c) Copyright Ken Harrenstien 1989
** (c) Copyright Ian Macky, SRI International 1986
** Edits for ITS: Copyright (C) 1988 Alan Bawden
**
*/
#ifndef _STDIO_INCLUDED
#define _STDIO_INCLUDED
#ifndef __STDC__ /* Canonicalize this indicator to avoid err msgs */
#define __STDC__ 0
#endif
/* Implementation-dependent constants and parameters */
#include <c-env.h> /* For OS-dependent numbers */
#ifndef _SIO_NPBC /* # of push-back characters that ungetc can handle */
#define _SIO_NPBC 2 /* 2 required in order for scanf to meet dpANS reqs */
#endif
#if SYS_ITS+SYS_T10+SYS_CSI+SYS_WTS
#define FOPEN_MAX 16 /* Max # files guaranteed can fopen at once */
#define FILENAME_MAX 10*7 /* Max size of filename string */
#define TMP_MAX 0777 /* # guaranteed unique tmpnam() filenames */
#define L_tmpnam 20 /* Size needed for tmpnam() result */
#else
#define FOPEN_MAX 32
#define FILENAME_MAX (40*5)
#define TMP_MAX 0777777
#define L_tmpnam FILENAME_MAX
#endif
/****************** Type Definitions ****************/
#ifndef _SIZE_T_DEFINED /* Avoid conflict with other headers */
#define _SIZE_T_DEFINED
typedef unsigned size_t; /* Type of sizeof() (must be unsigned, ugh) */
#endif
typedef struct _siostream FILE; /* Structure declared farther on */
typedef long fpos_t; /* For holding I/O pointer info */
/****************** Macro Definitions ****************/
#define NULL 0 /* Benign redefinition */
#define EOF (-1) /* EOF value */
/* Values for 3rd arg to setvbuf() */
#define _IOFBF 0 /* full buffering */
#define _IOLBF 1 /* line buffering */
#define _IONBF 2 /* no buffering */
/* Values for 3rd arg to fseek() */
#define SEEK_SET 0 /* starting point is start-of-file */
#define SEEK_CUR 1 /* ...current position */
#define SEEK_END 2 /* ...or end-of-file */
/* Standard I/O streams */
#define stdin (&_sios[0])
#define stdout (&_sios[1])
#define stderr (&_sios[2])
/* Sizes and parameters */
#define BUFSIZ 512 /* Buffer size in chars (may change later) */
/* FOPEN_MAX */ /* Max guaranteed # of files open */
/* FILENAME_MAX */ /* Max size of filename string */
/* L_tmpnam */ /* Size needed for tmpnam() string */
/* TMP_MAX */ /* Min # of unique filenames from tmpnam() */
/* KCC-supported extensions (as per H&S) */
#define L_ctermid FILENAME_MAX /* Terminal id could be big filespec */
#define L_cuserid 40 /* Max size of username */
/*
* Declarations
*/
extern FILE _sios[]; /* FILE structure array */
#if __STDC__
/* Operations on files */
int remove(const char*); /* filename */
int rename(const char*, const char*); /* old, new */
FILE *tmpfile(void);
char *tmpnam(char*); /* s */
/* File access */
int fclose(FILE*);
int fflush(FILE*);
FILE *fopen(const char*, const char*); /* filename, mode */
FILE *freopen(const char*, const char*, FILE*); /* filename, mode, stream */
void setbuf(FILE*, char*); /* stream, buf */
int setvbuf(FILE*, char*, int, size_t); /* stream, buf, mode, size */
/* Formatted I/O */
int fprintf(FILE*, const char*, ...); /* stream, format, ... */
int fscanf(FILE*, const char*, ...); /* stream, format, ... */
int printf(const char*, ...); /* format, ... */
int scanf(const char*, ...); /* format, ... */
int sprintf(char *, const char*, ...); /* s, format, ... */
int sscanf(const char*, const char*, ...); /* s, format, ... */
int vfprintf(FILE*, const char*, int*); /* stream, format, va_list */
int vprintf(const char *, int*); /* format, va_list */
int vsprintf(char*, const char*, int*); /* s, format, va_list */
/* Character I/O */
int fgetc(FILE*);
char *fgets(char*, int, FILE*);
int fputc(int, FILE*);
int fputs(const char*, FILE*);
int getc(FILE*);
int getchar(void);
char *gets(char*);
int putc(int, FILE*);
int putchar(int);
int puts(const char*);
int ungetc(int, FILE*);
/* Direct I/O */
size_t fread(void*, size_t, size_t, FILE*); /* ptr, size, nmemb, stream */
size_t fwrite(const void*, size_t, size_t, FILE*); /* ptr, size, nmemb, strm */
/* File positioning */
int fgetpos(FILE*, fpos_t*); /* stream, pos */
int fseek(FILE*, long, int); /* stream, offset, whence */
int fsetpos(FILE*, const fpos_t*); /* stream, pos */
long ftell(FILE*);
void rewind(FILE*);
/* Error Handling */
void clearerr(FILE *);
int feof(FILE*);
int ferror(FILE*);
void perror(const char*);
#else
FILE *fopen(), *freopen();
void setbuf();
int fclose(), fflush(), setvbuf(),
fprintf(), fscanf(), printf(), scanf(), sprintf(), sscanf(),
fgetc(), fputc(), fputs(), getc(), getchar(),
putc(), putchar(), puts(), ungetc();
char *fgets(), *gets();
size_t fread(), fwrite();
int fseek();
long ftell();
void rewind();
void clearerr(), perror();
int feof(), ferror();
FILE *tmpfile(); /* ANSI stuff */
char *tmpnam();
int remove(), rename(), vfprintf(), vprintf(), vsprintf(),
fgetpos(), fsetpos();
#endif
/* Extensions from BSD and SYSV */
#define setbuffer _setbuf /* Disambiguate external name */
#if __STDC__
FILE *fdopen(int, const char*); /* fd, mode */
FILE *sopen(const char*, const char*, size_t); /* ptr, mode, size */
void setbuffer(FILE*, char*, size_t); /* stream, buf, size */
void setlinebuf(FILE*);
char *mktemp(char*);
int getw(FILE*);
int putw(int, FILE*);
int fileno(FILE*);
#else
FILE *fdopen(), *sopen();
void setbuffer(), setlinebuf();
char *mktemp();
int getw(), putw(), fileno();
#endif
/* KCC-supported extensions (as per H&S) */
extern char *ctermid(); /* Get terminal filespec */
extern char *cuserid(); /* Get user ID string */
/* Internal STDIO declarations, not for user consumption.
** Probably move these out to a "sio.h" file someday.
*/
extern FILE *_FILE_head, *_makeFILE();
extern int _filbuf(), _readable(), _writeable(), _prime(), _sioflags();
extern void _cleanup(), _freeFILE(), _setFILE();
/*
* Standard I/O Stream structure
*/
struct _siostream {
int siocheck; /* 0 if inactive, else magic values */
int siocnt; /* # chars left in buffer */
char *siocp; /* Char pointer into buffer */
char *siopbuf; /* Pointer to start of buffer */
int siolbuf; /* Length of buffer */
int sioflgs; /* Various flags */
int siofd; /* FD for stream, if any */
long siofdoff; /* FD's offset into file b4 last r/w syscall */
int sioocnt; /* original buffer count after filbuf */
int sioerr; /* If nonzero, error # for stream */
int sio2cnt; /* Saved siocnt and */
char *sio2cp; /* siocp (during pushback) */
char siopbc[_SIO_NPBC]; /* Pushed-back characters */
FILE *sionFILE; /* pointer to next and... */
FILE *siopFILE; /* ...previous FILE blocks in chain */
int siospare[4]; /* spare words for hassleless expansion */
};
/*
* sio2cnt, sio2cp are used only for input streams (for push-back);
* we're reusing the sio2cnt word for output streams, to keep an
* alternate buffer-count. for linebuffering, the primary count is
* kept <= 0 so that fputc is always called; fputc knows about line-
* buffering, and uses the alternate count word, siolcnt.
*/
#define siolcnt sio2cnt /* Flush this def eventually */
/*
* Internal flags - contents of sioflgs
* Some of these are used while parsing the flag chars for
* fopen/freopen/sopen. These are indicated by '<char>' in the comment.
*/
#define _SIOF_READ 01 /* 'r' stream is open for reading */
#define _SIOF_WRITE 02 /* 'w' ...writing */
#define _SIOF_APPEND 04 /* 'a' ...appending */
#define _SIOF_UPDATE 010 /* '+' ...updating */
#define _SIOF_MODIFIED 020 /* buffer has been modified */
#define _SIOF_BINARY 040 /* 'b' binary data stream (not text) */
#define _SIOF_PBC 0100 /* Using push-back count and pointer */
#define _SIOF_EOF 0200 /* Stream has hit EOF */
#define _SIOF_STR 0400 /* Stream is a string, siofd unused */
#define _SIOF_BUF 01000 /* Stream is buffered */
#define _SIOF_LASTBUF 02000 /* Current buffer is last one */
#define _SIOF_LINEBUF 04000 /* Flush output buffer on EOL */
#define _SIOF_AUTOBUF 010000 /* Dynamically allocate buffer, pls */
#define _SIOF_GROWBUF 020000 /* String-buf automatically expands */
#define _SIOF_DYNAMFILE 040000 /* FILE block was stdio-allocated */
#define _SIOF_DYNAMBUF 0100000 /* I/O buffer was stdio-allocated */
#define _SIOF_CONVERTED 0200000 /* 'C' CRLF-EOL conversion forced */
#define _SIOF_UNCONVERTED 0400000 /* 'C-' forced NO CRLF conversion */
#define _SIOF_THAWED 01000000 /* 'T' Thawed access */
#define _SIOF_IMAGE 02000000 /* 'I' forced image mode open (ITS) */
#define _SIOF_NO_IMAGE 04000000 /* 'I-' forced ascii mode open (ITS) */
/*
* a valid FILE block returned by _makeFILE() has its siocheck word
* set to _SIOF_FILE. after the stream has been opened, the check
* word is changed to _SIOF_OPEN.
*/
#define _SIOF_OPEN (((-'O' * 'P' * 'E' * 'N') << 16) + 'S' + 'I' + 'O')
#define _SIOF_FILE (((-'F' * 'I' * 'L' * 'E') << 16) + 'S' + 'I' + 'O')
/* STDIO macros.
** All of these must also exist as real functions.
*/
#define clearerr(f) (void)((f)->sioflgs &= ~_SIOF_EOF, (f)->sioerr = 0)
#define feof(f) ((f)->sioflgs & _SIOF_EOF)
#define ferror(f) ((f)->sioerr)
#define getc(f) ((--(f)->siocnt >= 0) ? (*++(f)->siocp) : fgetc(f))
#define getchar() getc(stdin)
#define putc(c, f) \
(--(f)->siocnt >= 0 ? (*++(f)->siocp = (c)) : fputc((c), (f)))
#define putchar(c) putc((c), stdout)
/* Extensions - BSD and H&S */
#define fileno(f) ((f)->siofd) /* Find system FD for stream */
#if 1 /* Stuff for new ftell/fseek scheme */
/* Note new STDIO code is only compiled if _SIOP_BITS is defined. */
#define _SIOP_MAXBITS 10 /* Use constant size for now */
#ifdef _SIOP_MAXBITS
#define _SIOP_BITS(f) _SIOP_MAXBITS /* # bits for buffer size */
#define _SIOP_MASK(f) ((1<<_SIOP_MAXBITS)-1) /* Mask for buffer size */
#else
#define _SIOP_BITS(f) (f)->siopbits /* # bits for buffer size */
#define _SIOP_MASK(f) (f)->siopmask /* Mask for buffer size */
#endif
#else /* Old fseek/ftell scheme, uses _bufpos() routine from USYS.
** In order for _bufpos() to work, the UIO buffer must be at least
** twice the size of the STDIO buffer. Rather than muck with the UIO
** buffer size (which is set to something OS-efficient), we just change
** the size of the STDIO buffer.
*/
#undef BUFSIZ /* Flush previous def of STDIO buffer size */
#include <sys/usysio.h> /* Find UIO buffer size. Lots of defs, ugh. */
#define BUFSIZ (UIO_BUFSIZ/2) /* Define new size */
#endif
#endif /* ifndef _STDIO_INCLUDED */