#ifndef _PERLIOL_H #define _PERLIOL_H typedef struct { PerlIO_funcs *funcs; SV *arg; } PerlIO_pair_t; typedef struct { IV refcnt; IV cur; IV len; PerlIO_pair_t *array; } PerlIO_list_t; struct _PerlIO_funcs { char *name; Size_t size; IV kind; IV (*Pushed) (PerlIO *f, const char *mode, SV *arg); IV (*Popped) (PerlIO *f); PerlIO *(*Open) (pTHX_ PerlIO_funcs *tab, PerlIO_list_t *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *old, int narg, SV **args); SV *(*Getarg) (PerlIO *f); IV (*Fileno) (PerlIO *f); PerlIO *(*Dup) (pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param); /* Unix-like functions - cf sfio line disciplines */ SSize_t(*Read) (PerlIO *f, void *vbuf, Size_t count); SSize_t(*Unread) (PerlIO *f, const void *vbuf, Size_t count); SSize_t(*Write) (PerlIO *f, const void *vbuf, Size_t count); IV (*Seek) (PerlIO *f, Off_t offset, int whence); Off_t(*Tell) (PerlIO *f); IV (*Close) (PerlIO *f); /* Stdio-like buffered IO functions */ IV (*Flush) (PerlIO *f); IV (*Fill) (PerlIO *f); IV (*Eof) (PerlIO *f); IV (*Error) (PerlIO *f); void (*Clearerr) (PerlIO *f); void (*Setlinebuf) (PerlIO *f); /* Perl's snooping functions */ STDCHAR *(*Get_base) (PerlIO *f); Size_t(*Get_bufsiz) (PerlIO *f); STDCHAR *(*Get_ptr) (PerlIO *f); SSize_t(*Get_cnt) (PerlIO *f); void (*Set_ptrcnt) (PerlIO *f, STDCHAR * ptr, SSize_t cnt); }; /*--------------------------------------------------------------------------------------*/ /* Kind values */ #define PERLIO_K_RAW 0x00000001 #define PERLIO_K_BUFFERED 0x00000002 #define PERLIO_K_CANCRLF 0x00000004 #define PERLIO_K_FASTGETS 0x00000008 #define PERLIO_K_DUMMY 0x00000010 #define PERLIO_K_UTF8 0x00008000 #define PERLIO_K_DESTRUCT 0x00010000 /*--------------------------------------------------------------------------------------*/ struct _PerlIO { PerlIOl *next; /* Lower layer */ PerlIO_funcs *tab; /* Functions for this layer */ IV flags; /* Various flags for state */ }; /*--------------------------------------------------------------------------------------*/ /* Flag values */ #define PERLIO_F_EOF 0x00000100 #define PERLIO_F_CANWRITE 0x00000200 #define PERLIO_F_CANREAD 0x00000400 #define PERLIO_F_ERROR 0x00000800 #define PERLIO_F_TRUNCATE 0x00001000 #define PERLIO_F_APPEND 0x00002000 #define PERLIO_F_CRLF 0x00004000 #define PERLIO_F_UTF8 0x00008000 #define PERLIO_F_UNBUF 0x00010000 #define PERLIO_F_WRBUF 0x00020000 #define PERLIO_F_RDBUF 0x00040000 #define PERLIO_F_LINEBUF 0x00080000 #define PERLIO_F_TEMP 0x00100000 #define PERLIO_F_OPEN 0x00200000 #define PERLIO_F_FASTGETS 0x00400000 #define PERLIO_F_TTY 0x00800000 #define PerlIOBase(f) (*(f)) #define PerlIOSelf(f,type) ((type *)PerlIOBase(f)) #define PerlIONext(f) (&(PerlIOBase(f)->next)) /*--------------------------------------------------------------------------------------*/ /* Data exports - EXT rather than extern is needed for Cygwin */ EXT PerlIO_funcs PerlIO_unix; EXT PerlIO_funcs PerlIO_perlio; EXT PerlIO_funcs PerlIO_stdio; EXT PerlIO_funcs PerlIO_crlf; EXT PerlIO_funcs PerlIO_utf8; EXT PerlIO_funcs PerlIO_byte; EXT PerlIO_funcs PerlIO_raw; EXT PerlIO_funcs PerlIO_pending; #ifdef HAS_MMAP EXT PerlIO_funcs PerlIO_mmap; #endif #ifdef WIN32 EXT PerlIO_funcs PerlIO_win32; #endif extern PerlIO *PerlIO_allocate(pTHX); extern SV *PerlIO_arg_fetch(PerlIO_list_t *av, IV n); #define PerlIOArg PerlIO_arg_fetch(layers,n) #if O_BINARY != O_TEXT #define PERLIO_STDTEXT "t" #else #define PERLIO_STDTEXT "" #endif /*--------------------------------------------------------------------------------------*/ /* Generic, or stub layer functions */ extern IV PerlIOBase_fileno(PerlIO *f); extern PerlIO *PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param); extern IV PerlIOBase_pushed(PerlIO *f, const char *mode, SV *arg); extern IV PerlIOBase_popped(PerlIO *f); extern SSize_t PerlIOBase_read(PerlIO *f, void *vbuf, Size_t count); extern SSize_t PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count); extern IV PerlIOBase_eof(PerlIO *f); extern IV PerlIOBase_error(PerlIO *f); extern void PerlIOBase_clearerr(PerlIO *f); extern IV PerlIOBase_close(PerlIO *f); extern void PerlIOBase_setlinebuf(PerlIO *f); extern void PerlIOBase_flush_linebuf(void); extern IV PerlIOBase_noop_ok(PerlIO *f); extern IV PerlIOBase_noop_fail(PerlIO *f); /*--------------------------------------------------------------------------------------*/ /* perlio buffer layer As this is reasonably generic its struct and "methods" are declared here so they can be used to "inherit" from it. */ typedef struct { struct _PerlIO base; /* Base "class" info */ STDCHAR *buf; /* Start of buffer */ STDCHAR *end; /* End of valid part of buffer */ STDCHAR *ptr; /* Current position in buffer */ Off_t posn; /* Offset of buf into the file */ Size_t bufsiz; /* Real size of buffer */ IV oneword; /* Emergency buffer */ } PerlIOBuf; extern SV *PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param); extern PerlIO *PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *old, int narg, SV **args); extern IV PerlIOBuf_pushed(PerlIO *f, const char *mode, SV *arg); extern SSize_t PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count); extern SSize_t PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count); extern SSize_t PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count); extern IV PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence); extern Off_t PerlIOBuf_tell(PerlIO *f); extern IV PerlIOBuf_close(PerlIO *f); extern IV PerlIOBuf_flush(PerlIO *f); extern IV PerlIOBuf_fill(PerlIO *f); extern STDCHAR *PerlIOBuf_get_base(PerlIO *f); extern Size_t PerlIOBuf_bufsiz(PerlIO *f); extern STDCHAR *PerlIOBuf_get_ptr(PerlIO *f); extern SSize_t PerlIOBuf_get_cnt(PerlIO *f); extern void PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR * ptr, SSize_t cnt); extern int PerlIOUnix_oflags(const char *mode); /*--------------------------------------------------------------------------------------*/ #endif /* _PERLIOL_H */