173 lines
4.8 KiB
C
173 lines
4.8 KiB
C
/*************************************************************************
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* *
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* YAP Prolog %W% %G%
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* *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-2003 *
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* *
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**************************************************************************
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* *
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* File: yapio.h *
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* Last rev: 22/1/03 *
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* mods: *
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* comments: Input/Output information *
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* *
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*************************************************************************/
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#ifndef YAPIO_H
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#define YAPIO_H 1
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#ifdef SIMICS
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#undef HAVE_LIBREADLINE
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#endif
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#include <stdio.h>
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#include <wchar.h>
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#include <Yatom.h>
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#include "os/YapIOConfig.h"
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#ifndef _PL_WRITE_
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#define EOFCHAR EOF
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#endif
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/* info on aliases */
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typedef struct AliasDescS {
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Atom name;
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int alias_stream;
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} * AliasDesc;
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#define MAX_ISO_LATIN1 255
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/* parser stack, used to be AuxSp, now is ASP */
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#define ParserAuxSp LOCAL_ScannerStack
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/* routines in parser.c */
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VarEntry *Yap_LookupVar(const char *);
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Term Yap_VarNames(VarEntry *, Term);
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Term Yap_Variables(VarEntry *, Term);
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Term Yap_Singletons(VarEntry *, Term);
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/* routines in scanner.c */
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TokEntry *Yap_tokenizer(struct stream_desc *, bool, Term *d);
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void Yap_clean_tokenizer(TokEntry *, VarEntry *, VarEntry *);
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char *Yap_AllocScannerMemory(unsigned int);
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/* routines in iopreds.c */
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FILE *Yap_FileDescriptorFromStream(Term);
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Int Yap_FirstLineInParse(void);
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int Yap_CheckIOStream(Term, char *);
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#if defined(YAPOR) || defined(THREADS)
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void Yap_LockStream(void *);
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void Yap_UnLockStream(void *);
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#else
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#define Yap_LockStream(X)
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#define Yap_UnLockStream(X)
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#endif
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Int Yap_GetStreamFd(int);
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void Yap_CloseStreams(int);
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void Yap_FlushStreams(void);
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void Yap_ReleaseStream(int);
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void Yap_CloseStream(int);
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int Yap_PlGetchar(void);
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int Yap_PlGetWchar(void);
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int Yap_PlFGetchar(void);
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int Yap_GetCharForSIGINT(void);
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Int Yap_StreamToFileNo(Term);
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int Yap_OpenStream(FILE *, char *, Term, int);
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char *Yap_TermToString(Term t, char *s, size_t sz, size_t *length,
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encoding_t *encoding, int flags);
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char *Yap_HandleToString(yhandle_t l, size_t sz, size_t *length,
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encoding_t *encoding, int flags);
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int Yap_GetFreeStreamD(void);
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int Yap_GetFreeStreamDForReading(void);
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Term Yap_WStringToList(wchar_t *);
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Term Yap_WStringToListOfAtoms(wchar_t *);
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Atom Yap_LookupWideAtom(const wchar_t *);
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#define Quote_illegal_f 0x01
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#define Ignore_ops_f 0x02
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#define Handle_vars_f 0x04
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#define Use_portray_f 0x08
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#define To_heap_f 0x10
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#define Unfold_cyclics_f 0x20
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#define Use_SWI_Stream_f 0x40
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#define BackQuote_String_f 0x80
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#define AttVar_None_f 0x100
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#define AttVar_Dots_f 0x200
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#define AttVar_Portray_f 0x400
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#define Blob_Portray_f 0x800
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#define No_Escapes_f 0x1000
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#define No_Brace_Terms_f 0x2000
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#define Fullstop_f 0x4000
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#define New_Line_f 0x8000
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/* grow.c */
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int Yap_growheap_in_parser(tr_fr_ptr *, TokEntry **, VarEntry **);
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int Yap_growstack_in_parser(tr_fr_ptr *, TokEntry **, VarEntry **);
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int Yap_growtrail_in_parser(tr_fr_ptr *, TokEntry **, VarEntry **);
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bool Yap_IsAbsolutePath(const char *p);
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Atom Yap_TemporaryFile(const char *prefix, int *fd);
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const char *Yap_AbsoluteFile(const char *spec, bool expand);
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typedef enum mem_buf_source {
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MEM_BUF_CODE = 1,
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MEM_BUF_MALLOC = 2,
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MEM_BUF_USER = 4
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} memBufSource;
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char *Yap_MemStreamBuf(int sno);
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extern Term Yap_StringToTerm(const char *s, size_t len, encoding_t *encp,
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int prio, Term *bindings_p);
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extern Term Yap_StringToNumberTerm(char *s, encoding_t *encp);
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int Yap_FormatFloat(Float f, char **s, size_t sz);
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int Yap_open_buf_read_stream(const char *nbuf, size_t nchars, encoding_t *encp,
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memBufSource src);
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int Yap_open_buf_write_stream(char *nbuf, size_t nchars, encoding_t *encp,
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memBufSource src);
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Term Yap_ReadFromAtom(Atom a, Term opts);
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FILE *Yap_GetInputStream(Term t, const char *m);
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FILE *Yap_GetOutputStream(Term t, const char *m);
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char *Yap_guessFileName(int f, int sno, char *nameb, size_t max);
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void Yap_plwrite(Term t, struct stream_desc *mywrite, int max_depth, int flags,
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int priority);
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int Yap_CheckSocketStream(Term stream, const char *error);
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void Yap_init_socks(char *host, long interface_port);
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#else
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extern int errno;
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#endif
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uint64_t HashFunction(const unsigned char *);
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uint64_t WideHashFunction(wchar_t *);
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INLINE_ONLY inline EXTERN Term MkCharTerm(Int c);
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/**
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* MkCharTerm: convert a character into a single atom.
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*
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* @param c the character code
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*
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* @return the term.
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*/
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INLINE_ONLY inline EXTERN Term MkCharTerm(Int c) {
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int cs[2];
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if (c < 0)
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return MkAtomTerm(AtomEof);
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cs[0] = c;
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cs[1] = '\0';
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return MkAtomTerm(Yap_LookupMaybeWideAtom(cs));
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}
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#endif
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