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yap-6.3/os/yapio.h
2018-10-16 14:31:16 +01:00

197 lines
5.8 KiB
C

/*************************************************************************
* *
* YAP Prolog %W% %G%
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-2003 *
* *
**************************************************************************
* *
* File: yapio.h * Last
*rev: 22/1/03 * mods:
** comments: Input/Output information *
* *
*************************************************************************/
#ifndef YAPIO_H
#define YAPIO_H 1
#ifdef SIMICS
#undef HAVE_LIBREADLINE
#endif
#include <stdio.h>
#include <wchar.h>
#include "YapIOConfig.h"
#include <VFS.h>
#include <Yatom.h>
#ifndef _PL_WRITE_
#define EOFCHAR EOF
#endif
/* info on aliases */
typedef struct AliasDescS {
Atom name;
int alias_stream;
} * AliasDesc;
#define MAX_ISO_LATIN1 255
/* parser stack, used to be AuxSp, now is ASP */
#define ParserAuxSp LOCAL_ScannerStack
/**
*
* @return a new VFS that will support /assets
*/
extern struct vfs *Yap_InitAssetManager(void);
/* routines in parser.c */
extern VarEntry *Yap_LookupVar(const char *);
extern Term Yap_VarNames(VarEntry *, Term);
extern Term Yap_Variables(VarEntry *, Term);
extern Term Yap_Singletons(VarEntry *, Term);
/* routines in scanner.c */
extern TokEntry *Yap_tokenizer(struct stream_desc *, bool, Term *d);
extern void Yap_clean_tokenizer(TokEntry *, VarEntry *, VarEntry *);
extern char *Yap_AllocScannerMemory(unsigned int);
/* routines in iopreds.c */
extern FILE *Yap_FileDescriptorFromStream(Term);
extern Int Yap_FirstLineInParse(void);
extern int Yap_CheckIOStream(Term, char *);
#if defined(YAPOR) || defined(THREADS)
extern void Yap_LockStream(void *);
extern void Yap_UnLockStream(void *);
#else
#define Yap_LockStream(X)
#define Yap_UnLockStream(X)
#endif
extern Int Yap_GetStreamFd(int);
extern void Yap_CloseStreams(void);
extern void Yap_CloseTemporaryStreams(void);
extern void Yap_FlushStreams(void);
extern void Yap_ReleaseStream(int);
extern int Yap_PlGetchar(void);
extern int Yap_PlGetWchar(void);
extern int Yap_PlFGetchar(void);
extern int Yap_GetCharForSIGINT(void);
extern Int Yap_StreamToFileNo(Term);
extern int Yap_OpenStream(Term tin, const char *io_mode, Term user_name,
encoding_t enc);
extern int Yap_FileStream(FILE *, Atom, Term, int, VFS_t *);
extern char *Yap_TermToBuffer(Term t, int flags);
extern char *Yap_HandleToString(yhandle_t l, size_t sz, size_t *length,
encoding_t *encoding, int flags);
extern int Yap_GetFreeStreamD(void);
extern int Yap_GetFreeStreamDForReading(void);
extern Term Yap_BufferToTerm(const char *s, Term opts);
extern Term Yap_UBufferToTerm(const unsigned char *s, Term opts);
extern Term Yap_WStringToList(wchar_t *);
extern Term Yap_WStringToListOfAtoms(wchar_t *);
extern Atom Yap_LookupWideAtom(const wchar_t *);
/* grow.c */
extern int Yap_growheap_in_parser(tr_fr_ptr *, TokEntry **, VarEntry **);
extern int Yap_growstack_in_parser(tr_fr_ptr *, TokEntry **, VarEntry **);
extern int Yap_growtrail_in_parser(tr_fr_ptr *, TokEntry **, VarEntry **);
typedef enum mem_buf_source {
MEM_BUF_MALLOC = 1,
MEM_BUF_USER = 2
} memBufSource;
extern char *Yap_MemStreamBuf(int sno);
extern char *Yap_StrPrefix(const char *buf, size_t n);
extern Term Yap_StringToNumberTerm(const char *s, encoding_t *encp,
bool error_on);
extern int Yap_FormatFloat(Float f, char **s, size_t sz);
extern int Yap_open_buf_read_stream(const char *buf, size_t nchars,
encoding_t *encp, memBufSource src,
Atom name, Term uname);
extern int Yap_open_buf_write_stream(encoding_t enc, memBufSource src);
extern Term Yap_BufferToTerm(const char *s, Term opts);
extern X_API Term Yap_BufferToTermWithPrioBindings(const char *s, Term opts,
Term bindings, size_t sz,
int prio);
extern FILE *Yap_GetInputStream(Term t, const char *m);
extern FILE *Yap_GetOutputStream(Term t, const char *m);
extern Atom Yap_guessFileName(FILE *f, int sno, size_t max);
extern void Yap_plwrite(Term t, struct stream_desc *mywrite, int max_depth,
int flags, int priority);
extern int Yap_CheckSocketStream(Term stream, const char *error);
extern void Yap_init_socks(char *host, long interface_port);
extern bool Yap_flush(int sno);
extern uint64_t HashFunction(const unsigned char *);
extern uint64_t WideHashFunction(wchar_t *);
INLINE_ONLY Term MkCharTerm(Int c);
/**
* MkCharTerm: convert a character into a single atom.
*
* @param c the character code
*
* @return the term.
*/
INLINE_ONLY Term MkCharTerm(Int c) {
unsigned char cs[10];
if (c < 0)
return TermEof;
size_t n = put_utf8(cs, c);
cs[n] = '\0';
return MkAtomTerm(Yap_ULookupAtom(cs));
}
extern char *GLOBAL_cwd;
INLINE_ONLY char *Yap_VF(const char *path) {
char *out;
out = (char *)malloc(YAP_FILENAME_MAX + 1);
if (GLOBAL_cwd == NULL || GLOBAL_cwd[0] == 0 ||
!Yap_IsAbsolutePath(path, false)) {
return (char *)path;
}
strcpy(out, GLOBAL_cwd);
strcat(out, "/");
strcat(out, path);
return out;
}
INLINE_ONLY char *Yap_VFAlloc(const char *path) {
char *out;
out = (char *)malloc(YAP_FILENAME_MAX + 1);
if (GLOBAL_cwd == NULL || GLOBAL_cwd[0] == 0 ||
!Yap_IsAbsolutePath(path, false)) {
return (char *)path;
}
strcpy(out, GLOBAL_cwd);
strcat(out, "/");
strcat(out, path);
return out;
}
/// UT when yap started
extern uint64_t Yap_StartOfWTimes;
extern bool Yap_HandleSIGINT(void);
#endif