a3983fa820
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@2294 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
228 lines
7.8 KiB
C
228 lines
7.8 KiB
C
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#ifndef _PL_STREAM_H
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#define _PL_STREAM_H
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#ifndef X_API
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#if defined(_MSC_VER) && defined(YAP_EXPORTS)
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#define X_API __declspec(dllexport)
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#else
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#define X_API
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#endif
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#endif
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#ifndef PL_EXPORT
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#define PL_EXPORT(type) extern X_API type
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#endif
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/* This appears to make the wide-character support compile and work
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on HPUX 11.23. There really should be a cleaner way ...
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*/
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#if defined(__hpux)
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#include <sys/_mbstate_t.h>
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#endif
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#if defined(_MSC_VER) && !defined(__WINDOWS__)
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#define __WINDOWS__ 1
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#endif
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#include <stdarg.h>
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#include <wchar.h>
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#include <stddef.h>
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#ifdef __WINDOWS__
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typedef __int64 int64_t;
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#if (_MSC_VER < 1300)
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typedef long intptr_t;
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typedef unsigned long uintptr_t;
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#endif
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typedef intptr_t ssize_t; /* signed version of size_t */
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#else
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#include <unistd.h>
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#include <inttypes.h> /* more portable than stdint.h */
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef __cplusplus
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}
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#endif
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/*******************************
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* CONSTANTS *
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*******************************/
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#ifndef EOF
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#define EOF (-1)
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#endif
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#ifndef NULL
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#define NULL ((void *)0)
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#endif
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#if defined(__WINDOWS__) && !defined(EWOULDBLOCK)
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#define EWOULDBLOCK 1000 /* Needed for socket handling */
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#endif
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#define EPLEXCEPTION 1001 /* errno: pending Prolog exception */
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#define SIO_BUFSIZE (4096) /* buffering buffer-size */
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#define SIO_LINESIZE (1024) /* Sgets() default buffer size */
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#define SIO_MAGIC (7212676) /* magic number */
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#define SIO_CMAGIC (42) /* we are close (and thus illegal!) */
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typedef ssize_t (*Sread_function)(void *handle, char *buf, size_t bufsize);
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typedef ssize_t (*Swrite_function)(void *handle, char*buf, size_t bufsize);
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typedef long (*Sseek_function)(void *handle, long pos, int whence);
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typedef int64_t (*Sseek64_function)(void *handle, int64_t pos, int whence);
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typedef int (*Sclose_function)(void *handle);
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typedef int (*Scontrol_function)(void *handle, int action, void *arg);
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#if defined(O_PLMT) && defined(PL_KERNEL)
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#include "pl-mutex.h"
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#define IOLOCK recursiveMutex
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#else
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typedef void * IOLOCK; /* Definition for external use */
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#endif
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typedef struct io_functions
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{ Sread_function read; /* fill the buffer */
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Swrite_function write; /* empty the buffer */
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Sseek_function seek; /* seek to position */
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Sclose_function close; /* close stream */
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Scontrol_function control; /* Info/control */
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Sseek64_function seek64; /* seek to position (intptr_t files) */
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} IOFUNCTIONS;
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typedef struct io_position
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{ int64_t byteno; /* byte-position in file */
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int64_t charno; /* character position in file */
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int lineno; /* lineno in file */
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int linepos; /* position in line */
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intptr_t reserved[2]; /* future extensions */
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} IOPOS;
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/* NOTE: check with encoding_names */
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/* in pl-file.c */
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typedef enum
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{ ENC_UNKNOWN = 0, /* invalid/unknown */
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ENC_OCTET, /* raw 8 bit input */
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ENC_ASCII, /* US-ASCII (0..127) */
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ENC_ISO_LATIN_1, /* ISO Latin-1 (0..256) */
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ENC_ANSI, /* default (multibyte) codepage */
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ENC_UTF8,
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ENC_UNICODE_BE, /* big endian unicode file */
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ENC_UNICODE_LE, /* little endian unicode file */
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ENC_WCHAR /* pl_wchar_t */
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} IOENC;
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#define SIO_NL_POSIX 0 /* newline as \n */
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#define SIO_NL_DOS 1 /* newline as \r\n */
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#define SIO_NL_DETECT 3 /* detect processing mode */
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typedef struct io_stream
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{ char *bufp; /* `here' */
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char *limitp; /* read/write limit */
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char *buffer; /* the buffer */
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char *unbuffer; /* Sungetc buffer */
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int lastc; /* last character written */
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int magic; /* magic number SIO_MAGIC */
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int bufsize; /* size of the buffer */
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int flags; /* Status flags */
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IOPOS posbuf; /* location in file */
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IOPOS * position; /* pointer to above */
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void *handle; /* function's handle */
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IOFUNCTIONS *functions; /* open/close/read/write/seek */
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int locks; /* lock/unlock count */
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IOLOCK * mutex; /* stream mutex */
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/* SWI-Prolog 4.0.7 */
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void (*close_hook)(void* closure);
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void * closure;
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/* SWI-Prolog 5.1.3 */
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int timeout; /* timeout (milliseconds) */
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/* SWI-Prolog 5.4.4 */
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char * message; /* error/warning message */
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IOENC encoding; /* character encoding used */
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struct io_stream * tee; /* copy data to this stream */
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mbstate_t * mbstate; /* ENC_ANSI decoding */
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struct io_stream * upstream; /* stream providing our input */
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struct io_stream * downstream; /* stream providing our output */
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unsigned newline : 2; /* Newline mode */
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intptr_t reserved[3]; /* reserved for extension */
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} IOSTREAM;
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#define SmakeFlag(n) (1<<(n-1))
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#define SIO_FBUF SmakeFlag(1) /* full buffering */
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#define SIO_LBUF SmakeFlag(2) /* line buffering */
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#define SIO_NBUF SmakeFlag(3) /* no buffering */
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#define SIO_FEOF SmakeFlag(4) /* end-of-file */
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#define SIO_FERR SmakeFlag(5) /* error ocurred */
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#define SIO_USERBUF SmakeFlag(6) /* buffer is from user */
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#define SIO_INPUT SmakeFlag(7) /* input stream */
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#define SIO_OUTPUT SmakeFlag(8) /* output stream */
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#define SIO_NOLINENO SmakeFlag(9) /* line no. info is void */
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#define SIO_NOLINEPOS SmakeFlag(10) /* line pos is void */
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#define SIO_STATIC SmakeFlag(11) /* Stream in static memory */
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#define SIO_RECORDPOS SmakeFlag(12) /* Maintain position */
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#define SIO_FILE SmakeFlag(13) /* Stream refers to an OS file */
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#define SIO_PIPE SmakeFlag(14) /* Stream refers to an OS pipe */
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#define SIO_NOFEOF SmakeFlag(15) /* don't set SIO_FEOF flag */
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#define SIO_TEXT SmakeFlag(16) /* text-mode operation */
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#define SIO_FEOF2 SmakeFlag(17) /* attempt to read past eof */
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#define SIO_FEOF2ERR SmakeFlag(18) /* Sfpasteof() */
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#define SIO_NOCLOSE SmakeFlag(19) /* Do not close on abort */
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#define SIO_APPEND SmakeFlag(20) /* opened in append-mode */
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#define SIO_UPDATE SmakeFlag(21) /* opened in update-mode */
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#define SIO_ISATTY SmakeFlag(22) /* Stream is a tty */
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#define SIO_CLOSING SmakeFlag(23) /* We are closing the stream */
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#define SIO_TIMEOUT SmakeFlag(24) /* We had a timeout */
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#define SIO_NOMUTEX SmakeFlag(25) /* Do not allow multi-thread access */
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#define SIO_ADVLOCK SmakeFlag(26) /* File locked with advisory lock */
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#define SIO_WARN SmakeFlag(27) /* Pending warning */
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#define SIO_CLEARERR SmakeFlag(28) /* Clear error after reporting */
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#define SIO_REPXML SmakeFlag(29) /* Bad char --> XML entity */
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#define SIO_REPPL SmakeFlag(30) /* Bad char --> Prolog \hex\ */
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#define SIO_BOM SmakeFlag(31) /* BOM was detected/written */
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#define SIO_SEEK_SET 0 /* From beginning of file. */
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#define SIO_SEEK_CUR 1 /* From current position. */
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#define SIO_SEEK_END 2 /* From end of file. */
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#define Sinput (&S__iob[0]) /* Stream Sinput */
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#define Soutput (&S__iob[1]) /* Stream Soutput */
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#define Serror (&S__iob[2]) /* Stream Serror */
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#define Sgetchar() Sgetc(Sinput)
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#define Sputchar(c) Sputc((c), Soutput)
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#define S__updatefilepos_getc(s, c) \
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((s)->position ? S__fupdatefilepos_getc((s), (c)) \
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: (c))
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#define Snpgetc(s) ((s)->bufp < (s)->limitp ? (int)(*(s)->bufp++)&0xff \
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: S__fillbuf(s))
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#define Sgetc(s) S__updatefilepos_getc((s), Snpgetc(s))
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/* Control-operations */
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#define SIO_GETSIZE (1) /* get size of underlying object */
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#define SIO_GETFILENO (2) /* get underlying file (if any) */
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#define SIO_SETENCODING (3) /* modify encoding of stream */
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/* Sread_pending() */
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#define SIO_RP_BLOCK 0x1 /* wait for new input */
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PL_EXPORT(void) Sseterr(IOSTREAM *s, int which, const char *message);
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PL_EXPORT(int) S__fillbuf(IOSTREAM *s);
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PL_EXPORT(IOSTREAM *) Snew(void *handle, int flags, IOFUNCTIONS *functions);
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PL_EXPORT(int) Sfileno(IOSTREAM *s);
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PL_EXPORT(int) Sgetcode(IOSTREAM *s);
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PL_EXPORT(int) Sungetc(int c, IOSTREAM *s);
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PL_EXPORT(int) Sputcode(int c, IOSTREAM *s);
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PL_EXPORT(int) Sfeof(IOSTREAM *s);
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PL_EXPORT(int) Sfpasteof(IOSTREAM *s);
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PL_EXPORT(int) Sferror(IOSTREAM *s);
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PL_EXPORT(void) Sclearerr(IOSTREAM *s);
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PL_EXPORT(void) Sseterr(IOSTREAM *s, int which, const char *message);
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#endif /*_PL_STREAM_H*/
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