/* Part of SWI-Prolog Author: Jan Wielemaker E-mail: J.Wielemaker@vu.nl WWW: http://www.swi-prolog.org Copyright (c) 2011-2021, University of Amsterdam VU University Amsterdam SWI-Prolog Solutions b.v. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _SWI_STREAM_H #define _SWI_STREAM_H /* This appears to make the wide-character support compile and work on HPUX 11.23. There really should be a cleaner way ... */ #if defined(__hpux) #include #endif #ifndef __WINDOWS__ #if defined(_MSC_VER) || defined(__MINGW32__) #define __WINDOWS__ 1 #endif #endif #ifdef __WINDOWS__ #include #include #undef V_ERROR #endif #include #include #include #ifdef _MSC_VER typedef __int64 int64_t; typedef intptr_t ssize_t; /* signed version of size_t */ #else #include #include /* more portable than stdint.h */ #endif #ifdef __cplusplus extern "C" { #endif /******************************* * EXPORT * *******************************/ /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - See SWI-Prolog.h, containing the same code for an explanation on this stuff. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ #ifndef _PL_EXPORT_DONE #define _PL_EXPORT_DONE #if defined(_MSC_VER) || defined(__MINGW32__) #define HAVE_DECLSPEC #endif #ifdef HAVE_DECLSPEC # ifdef PL_KERNEL #define PL_EXPORT(type) __declspec(dllexport) extern type #define PL_EXPORT_DATA(type) __declspec(dllexport) extern type #define install_t void # else # ifdef __BORLANDC__ #define PL_EXPORT(type) type _stdcall #define PL_EXPORT_DATA(type) extern type # else # ifdef __MINGW32__ #define PL_EXPORT(type) extern type #define PL_EXPORT_DATA(type) extern type # else #define PL_EXPORT(type) extern type #define PL_EXPORT_DATA(type) __declspec(dllimport) type # endif # endif #define install_t __declspec(dllexport) void # endif #else /*HAVE_DECLSPEC*/ # ifdef PL_SO_EXPORT #define PL_EXPORT(type) extern PL_SO_EXPORT type #define PL_EXPORT_DATA(type) extern PL_SO_EXPORT type # else #define PL_EXPORT(type) extern type #define PL_EXPORT_DATA(type) extern type # endif #define install_t void #endif /*HAVE_DECLSPEC*/ #endif /*_PL_EXPORT_DONE*/ /******************************* * CONSTANTS * *******************************/ #ifndef EOF #define EOF (-1) #endif #ifndef NULL #define NULL ((void *)0) #endif #if defined(__WINDOWS__) && !defined(EWOULDBLOCK) #define EWOULDBLOCK 140 /* Needed for socket handling */ /* 140 is compatible to VS2010 */ #endif #define EPLEXCEPTION 1001 /* errno: pending Prolog exception */ #define SIO_BUFSIZE (4096) /* buffering buffer-size */ #define SIO_LINESIZE (1024) /* Sgets() default buffer size */ #define SIO_OMAGIC (7212676) /* old magic number */ #define SIO_MAGIC (7212677) /* magic number */ #define SIO_CMAGIC (42) /* we are close (and thus illegal!) */ typedef ssize_t (*Sread_function)(void *handle, char *buf, size_t bufsize); typedef ssize_t (*Swrite_function)(void *handle, char*buf, size_t bufsize); typedef long (*Sseek_function)(void *handle, long pos, int whence); typedef int64_t (*Sseek64_function)(void *handle, int64_t pos, int whence); typedef int (*Sclose_function)(void *handle); typedef int (*Scontrol_function)(void *handle, int action, void *arg); #if defined(O_PLMT) && defined(PL_KERNEL) #include "pl-mutex.h" #define IOLOCK recursiveMutex #else typedef void * IOLOCK; /* Definition for external use */ #endif #ifndef PL_HAVE_TERM_T #define PL_HAVE_TERM_T typedef uintptr_t term_t; /* opaque term handle */ #endif typedef struct io_functions { Sread_function read; /* fill the buffer */ Swrite_function write; /* empty the buffer */ Sseek_function seek; /* seek to position */ Sclose_function close; /* close stream */ Scontrol_function control; /* Info/control */ Sseek64_function seek64; /* seek to position (large files) */ } IOFUNCTIONS; typedef struct io_position { int64_t byteno; /* byte-position in file */ int64_t charno; /* character position in file */ int lineno; /* lineno in file */ int linepos; /* position in line */ intptr_t reserved[2]; /* future extensions */ } IOPOS; /* NOTE: check with encoding_names */ /* in pl-file.c */ typedef enum { ENC_UNKNOWN = 0, /* invalid/unknown */ ENC_OCTET, /* raw 8 bit input */ ENC_ASCII, /* US-ASCII (0..127) */ ENC_ISO_LATIN_1, /* ISO Latin-1 (0..256) */ ENC_ANSI, /* default (multibyte) codepage */ ENC_UTF8, ENC_UNICODE_BE, /* big endian unicode file */ ENC_UNICODE_LE, /* little endian unicode file */ ENC_WCHAR /* pl_wchar_t */ } IOENC; #define SIO_NL_POSIX 0 /* newline as \n */ #define SIO_NL_DOS 1 /* newline as \r\n */ #define SIO_NL_DETECT 3 /* detect processing mode */ typedef struct io_stream { char *bufp; /* `here' */ char *limitp; /* read/write limit */ char *buffer; /* the buffer */ char *unbuffer; /* Sungetc buffer */ int lastc; /* last character written */ int magic; /* magic number SIO_MAGIC */ int bufsize; /* size of the buffer */ unsigned int flags; /* Status flags */ IOPOS posbuf; /* location in file */ IOPOS * position; /* pointer to above */ void *handle; /* function's handle */ IOFUNCTIONS *functions; /* open/close/read/write/seek */ int timeout; /* timeout (milliseconds) */ IOENC encoding; /* character encoding used */ int locks; /* lock/unlock count */ int references; /* Reference-count */ IOLOCK * mutex; /* stream mutex */ void (*close_hook)(void* closure); void * closure; mbstate_t * mbstate; /* ENC_ANSI decoding */ struct io_stream * tee; /* copy data to this stream */ struct io_stream * upstream; /* stream providing our input */ struct io_stream * downstream; /* stream providing our output */ unsigned newline : 2; /* Newline mode */ unsigned erased : 1; /* Stream was erased */ int io_errno; /* Save errno value */ char * message; /* error/warning message */ void * exception; /* pending exception (record_t) */ void * context; /* getStreamContext() */ struct PL_locale * locale; /* Locale associated to stream */ intptr_t reserved[4]; /* reserved for extension */ } IOSTREAM; #define SmakeFlag(n) (1<<(n-1)) #define SIO_FBUF SmakeFlag(1) /* full buffering */ #define SIO_LBUF SmakeFlag(2) /* line buffering */ #define SIO_NBUF SmakeFlag(3) /* no buffering */ #define SIO_FEOF SmakeFlag(4) /* end-of-file */ #define SIO_FERR SmakeFlag(5) /* error ocurred */ #define SIO_USERBUF SmakeFlag(6) /* buffer is from user */ #define SIO_INPUT SmakeFlag(7) /* input stream */ #define SIO_OUTPUT SmakeFlag(8) /* output stream */ #define SIO_NOLINENO SmakeFlag(9) /* line no. info is void */ #define SIO_NOLINEPOS SmakeFlag(10) /* line pos is void */ #define SIO_STATIC SmakeFlag(11) /* Stream in static memory */ #define SIO_RECORDPOS SmakeFlag(12) /* Maintain position */ #define SIO_FILE SmakeFlag(13) /* Stream refers to an OS file */ #define SIO_NOERROR SmakeFlag(14) /* Ignore write errors */ #define SIO_NOFEOF SmakeFlag(15) /* don't set SIO_FEOF flag */ #define SIO_TEXT SmakeFlag(16) /* text-mode operation */ #define SIO_FEOF2 SmakeFlag(17) /* attempt to read past eof */ #define SIO_FEOF2ERR SmakeFlag(18) /* Sfpasteof() */ #define SIO_NOCLOSE SmakeFlag(19) /* Do not close on abort */ #define SIO_APPEND SmakeFlag(20) /* opened in append-mode */ #define SIO_UPDATE SmakeFlag(21) /* opened in update-mode */ #define SIO_ISATTY SmakeFlag(22) /* Stream is a tty */ #define SIO_CLOSING SmakeFlag(23) /* We are closing the stream */ #define SIO_TIMEOUT SmakeFlag(24) /* We had a timeout */ #define SIO_NOMUTEX SmakeFlag(25) /* Do not allow multi-thread access */ #define SIO_ADVLOCK SmakeFlag(26) /* File locked with advisory lock */ #define SIO_WARN SmakeFlag(27) /* Pending warning */ #define SIO_RAW SmakeFlag(28) /* TTY Stream is in raw mode */ #define SIO_REPXML SmakeFlag(29) /* Bad char --> XML entity */ #define SIO_REPPL SmakeFlag(30) /* Bad char --> Prolog \hex\ */ #define SIO_BOM SmakeFlag(31) /* BOM was detected/written */ #define SIO_REPPLU SmakeFlag(32) /* Bad char --> Prolog \uXXXX */ #define SIO_SEEK_SET 0 /* From beginning of file. */ #define SIO_SEEK_CUR 1 /* From current position. */ #define SIO_SEEK_END 2 /* From end of file. */ PL_EXPORT(IOSTREAM *) S__getiob(void); /* get DLL's __iob[] address */ PL_EXPORT_DATA(IOFUNCTIONS) Sfilefunctions; /* OS file functions */ PL_EXPORT_DATA(int) Slinesize; /* Sgets() linesize */ #if defined(__CYGWIN__) && !defined(PL_KERNEL) #define S__iob S__getiob() #else PL_EXPORT_DATA(IOSTREAM) S__iob[3]; /* Libs standard streams */ #endif #define Sinput (&S__iob[0]) /* Stream Sinput */ #define Soutput (&S__iob[1]) /* Stream Soutput */ #define Serror (&S__iob[2]) /* Stream Serror */ #define Sgetchar() Sgetc(Sinput) #define Sputchar(c) Sputc((c), Soutput) #define S__updatefilepos_getc(s, c) \ ((s)->position ? S__fupdatefilepos_getc((s), (c)) \ : (c)) #define Snpgetc(s) ((s)->bufp < (s)->limitp ? (int)(*(s)->bufp++)&0xff \ : S__fillbuf(s)) #define Sgetc(s) S__updatefilepos_getc((s), Snpgetc(s)) /* Control-operations */ #define SIO_GETSIZE (1) /* get size of underlying object */ #define SIO_GETFILENO (2) /* get underlying file (if any) */ #define SIO_SETENCODING (3) /* modify encoding of stream */ #define SIO_FLUSHOUTPUT (4) /* flush output */ #define SIO_LASTERROR (5) /* string holding last error */ #ifdef __WINDOWS__ #define SIO_GETWINSOCK (6) /* get underlying SOCKET object */ #endif #define SIO_GETPENDING (7) /* get #pending bytes */ #define SIO_GETREPOSITION (8) /* Test if stream is repositionable */ /* Sread_pending() */ #define SIO_RP_BLOCK 0x1 /* wait for new input */ #define SIO_RP_NOPOS 0x2 /* Do not update position */ #if IOSTREAM_REPLACES_STDIO #undef FILE #undef stdin #undef stdout #undef stderr #undef putc #undef getc #undef putchar #undef getchar #undef feof #undef ferror #undef fileno #undef clearerr #define FILE IOSTREAM #define stdin Sinput #define stdout Soutput #define stderr Serror #define putc Sputc #define getc Sgetc #define fputc Sputc #define fgetc Sgetc #define getw Sgetw #define putw Sputw #define fread Sfread #define fwrite Sfwrite #define ungetc Sungetc #define putchar Sputchar #define getchar Sgetchar #define feof Sfeof #define ferror Sferror #define clearerr Sclearerr #define fflush Sflush #define fseek Sseek #define ftell Stell #define fclose Sclose #define fgets Sfgets #define gets Sgets #define fputs Sfputs #define puts Sputs #define fprintf Sfprintf #define printf Sprintf #define vprintf Svprintf #define vfprintf Svfprintf #define sprintf Ssprintf #define vsprintf Svsprintf #define fopen Sopen_file #define fdopen Sfdopen #define fileno Sfileno #define popen Sopen_pipe #endif /*IOSTREAM_REPLACES_STDIO*/ /******************************* * PROTOTYPES * *******************************/ PL_EXPORT(void) SinitStreams(void); PL_EXPORT(void) Scleanup(void); PL_EXPORT(void) Sreset(void); PL_EXPORT(int) S__fupdatefilepos_getc(IOSTREAM *s, int c); PL_EXPORT(int) S__fillbuf(IOSTREAM *s); PL_EXPORT(int) Sset_timeout(IOSTREAM *s, int tmo); PL_EXPORT(int) Sunit_size(IOSTREAM *s); /* byte I/O */ PL_EXPORT(int) Sputc(int c, IOSTREAM *s); PL_EXPORT(int) Sfgetc(IOSTREAM *s); PL_EXPORT(int) Sungetc(int c, IOSTREAM *s); /* multibyte I/O */ PL_EXPORT(int) Scanrepresent(int c, IOSTREAM *s); PL_EXPORT(int) Sputcode(int c, IOSTREAM *s); PL_EXPORT(int) Sgetcode(IOSTREAM *s); PL_EXPORT(int) Speekcode(IOSTREAM *s); /* word I/O */ PL_EXPORT(int) Sputw(int w, IOSTREAM *s); PL_EXPORT(int) Sgetw(IOSTREAM *s); PL_EXPORT(size_t) Sfread(void *data, size_t size, size_t elems, IOSTREAM *s); PL_EXPORT(size_t) Sfwrite(const void *data, size_t size, size_t elems, IOSTREAM *s); PL_EXPORT(int) Sfeof(IOSTREAM *s); PL_EXPORT(int) Sfpasteof(IOSTREAM *s); PL_EXPORT(int) Sferror(IOSTREAM *s); PL_EXPORT(void) Sclearerr(IOSTREAM *s); PL_EXPORT(int) Sseterr(IOSTREAM *s, int which, const char *message); PL_EXPORT(int) Sset_exception(IOSTREAM *s, term_t ex); PL_EXPORT(int) Ssetenc(IOSTREAM *s, IOENC new_enc, IOENC *old_enc); PL_EXPORT(int) Ssetlocale(IOSTREAM *s, struct PL_locale *new_loc, struct PL_locale **old_loc); PL_EXPORT(int) Sflush(IOSTREAM *s); PL_EXPORT(int64_t) Ssize(IOSTREAM *s); PL_EXPORT(int) Sseek(IOSTREAM *s, long pos, int whence); PL_EXPORT(long) Stell(IOSTREAM *s); PL_EXPORT(int) Sclose(IOSTREAM *s); PL_EXPORT(char *) Sfgets(char *buf, int n, IOSTREAM *s); PL_EXPORT(char *) Sgets(char *buf); PL_EXPORT(ssize_t) Sread_pending(IOSTREAM *s, char *buf, size_t limit, int flags); PL_EXPORT(size_t) Spending(IOSTREAM *s); PL_EXPORT(int) Sfputs(const char *q, IOSTREAM *s); PL_EXPORT(int) Sputs(const char *q); PL_EXPORT(int) Sfprintf(IOSTREAM *s, const char *fm, ...); PL_EXPORT(int) Sprintf(const char *fm, ...); PL_EXPORT(int) Svprintf(const char *fm, va_list args); PL_EXPORT(int) Svfprintf(IOSTREAM *s, const char *fm, va_list args); PL_EXPORT(int) Ssprintf(char *buf, const char *fm, ...); PL_EXPORT(int) Ssnprintf(char *buf, size_t size, const char *fm, ...); PL_EXPORT(int) Svsprintf(char *buf, const char *fm, va_list args); PL_EXPORT(int) Svsnprintf(char *buf, size_t size, const char *fm, va_list args); PL_EXPORT(int) Svdprintf(const char *fm, va_list args); PL_EXPORT(int) Sdprintf(const char *fm, ...); PL_EXPORT(int) Slock(IOSTREAM *s); PL_EXPORT(int) StryLock(IOSTREAM *s); PL_EXPORT(int) Sunlock(IOSTREAM *s); PL_EXPORT(IOSTREAM *) Snew(void *handle, int flags, IOFUNCTIONS *functions); PL_EXPORT(IOSTREAM *) Sopen_file(const char *path, const char *how); PL_EXPORT(IOSTREAM *) Sopen_iri_or_file(const char *path, const char *how); PL_EXPORT(IOSTREAM *) Sfdopen(int fd, const char *type); PL_EXPORT(int) Sfileno(IOSTREAM *s); #ifdef __WINDOWS__ #if defined(_WINSOCKAPI_) || defined(NEEDS_SWINSOCK) /* have SOCKET */ PL_EXPORT(SOCKET) Swinsock(IOSTREAM *s); #endif #endif PL_EXPORT(IOSTREAM *) Sopen_pipe(const char *command, const char *type); PL_EXPORT(IOSTREAM *) Sopenmem(char **buffer, size_t *sizep, const char *mode); PL_EXPORT(IOSTREAM *) Sopen_string(IOSTREAM *s, char *buf, size_t sz, const char *m); PL_EXPORT(int) Sclosehook(void (*hook)(IOSTREAM *s)); PL_EXPORT(void) Sfree(void *ptr); PL_EXPORT(int) Sset_filter(IOSTREAM *parent, IOSTREAM *filter); PL_EXPORT(void) Ssetbuffer(IOSTREAM *s, char *buf, size_t size); PL_EXPORT(int64_t) Stell64(IOSTREAM *s); PL_EXPORT(int) Sseek64(IOSTREAM *s, int64_t pos, int whence); PL_EXPORT(int) ScheckBOM(IOSTREAM *s); PL_EXPORT(int) SwriteBOM(IOSTREAM *s); #ifdef _SWI_PROLOG_H PL_EXPORT(IOENC) PL_atom_to_encoding(atom_t name); PL_EXPORT(atom_t) PL_encoding_to_atom(IOENC enc); #endif #ifdef __cplusplus } #endif #endif /*_SWI_STREAM_H*/