23 IV (*Pushed)(PerlIO *f,const char *mode,SV *arg);
24 IV (*Popped)(PerlIO *f);
25 PerlIO * (*Open)(pTHX_ PerlIO_funcs *tab,
26 PerlIO_list_t *layers, IV n,
28 int fd, int imode, int perm,
31 SV * (*Getarg)(PerlIO *f);
32 IV (*Fileno)(PerlIO *f);
33 /* Unix-like functions - cf sfio line disciplines */
34 SSize_t (*Read)(PerlIO *f, void *vbuf, Size_t count);
35 SSize_t (*Unread)(PerlIO *f, const void *vbuf, Size_t count);
36 SSize_t (*Write)(PerlIO *f, const void *vbuf, Size_t count);
37 IV (*Seek)(PerlIO *f, Off_t offset, int whence);
38 Off_t (*Tell)(PerlIO *f);
39 IV (*Close)(PerlIO *f);
40 /* Stdio-like buffered IO functions */
41 IV (*Flush)(PerlIO *f);
42 IV (*Fill)(PerlIO *f);
44 IV (*Error)(PerlIO *f);
45 void (*Clearerr)(PerlIO *f);
46 void (*Setlinebuf)(PerlIO *f);
47 /* Perl's snooping functions */
48 STDCHAR * (*Get_base)(PerlIO *f);
49 Size_t (*Get_bufsiz)(PerlIO *f);
50 STDCHAR * (*Get_ptr)(PerlIO *f);
51 SSize_t (*Get_cnt)(PerlIO *f);
52 void (*Set_ptrcnt)(PerlIO *f,STDCHAR *ptr,SSize_t cnt);
55 /*--------------------------------------------------------------------------------------*/
57 #define PERLIO_K_RAW 0x00000001
58 #define PERLIO_K_BUFFERED 0x00000002
59 #define PERLIO_K_CANCRLF 0x00000004
60 #define PERLIO_K_FASTGETS 0x00000008
61 #define PERLIO_K_DUMMY 0x00000010
62 #define PERLIO_K_UTF8 0x00008000
63 #define PERLIO_K_DESTRUCT 0x00010000
65 /*--------------------------------------------------------------------------------------*/
68 PerlIOl * next; /* Lower layer */
69 PerlIO_funcs * tab; /* Functions for this layer */
70 IV flags; /* Various flags for state */
73 /*--------------------------------------------------------------------------------------*/
76 #define PERLIO_F_EOF 0x00000100
77 #define PERLIO_F_CANWRITE 0x00000200
78 #define PERLIO_F_CANREAD 0x00000400
79 #define PERLIO_F_ERROR 0x00000800
80 #define PERLIO_F_TRUNCATE 0x00001000
81 #define PERLIO_F_APPEND 0x00002000
82 #define PERLIO_F_CRLF 0x00004000
83 #define PERLIO_F_UTF8 0x00008000
84 #define PERLIO_F_UNBUF 0x00010000
85 #define PERLIO_F_WRBUF 0x00020000
86 #define PERLIO_F_RDBUF 0x00040000
87 #define PERLIO_F_LINEBUF 0x00080000
88 #define PERLIO_F_TEMP 0x00100000
89 #define PERLIO_F_OPEN 0x00200000
90 #define PERLIO_F_FASTGETS 0x00400000
91 #define PERLIO_F_TTY 0x00800000
93 #define PerlIOBase(f) (*(f))
94 #define PerlIOSelf(f,type) ((type *)PerlIOBase(f))
95 #define PerlIONext(f) (&(PerlIOBase(f)->next))
97 /*--------------------------------------------------------------------------------------*/
98 /* Data exports - EXT rather than extern is needed for Cygwin */
99 EXT PerlIO_funcs PerlIO_unix;
100 EXT PerlIO_funcs PerlIO_perlio;
101 EXT PerlIO_funcs PerlIO_stdio;
102 EXT PerlIO_funcs PerlIO_crlf;
103 EXT PerlIO_funcs PerlIO_utf8;
104 EXT PerlIO_funcs PerlIO_byte;
105 EXT PerlIO_funcs PerlIO_raw;
106 EXT PerlIO_funcs PerlIO_pending;
108 EXT PerlIO_funcs PerlIO_mmap;
111 EXT PerlIO_funcs PerlIO_win32;
113 extern PerlIO *PerlIO_allocate(pTHX);
114 extern SV *PerlIO_arg_fetch(PerlIO_list_t *av,IV n);
115 #define PerlIOArg PerlIO_arg_fetch(layers,n)
117 #if O_BINARY != O_TEXT
118 #define PERLIO_STDTEXT "t"
120 #define PERLIO_STDTEXT ""
123 /*--------------------------------------------------------------------------------------*/
124 /* Generic, or stub layer functions */
126 extern IV PerlIOBase_fileno (PerlIO *f);
127 extern IV PerlIOBase_pushed (PerlIO *f, const char *mode,SV *arg);
128 extern IV PerlIOBase_popped (PerlIO *f);
129 extern SSize_t PerlIOBase_read (PerlIO *f, void *vbuf, Size_t count);
130 extern SSize_t PerlIOBase_unread (PerlIO *f, const void *vbuf, Size_t count);
131 extern IV PerlIOBase_eof (PerlIO *f);
132 extern IV PerlIOBase_error (PerlIO *f);
133 extern void PerlIOBase_clearerr (PerlIO *f);
134 extern IV PerlIOBase_close (PerlIO *f);
135 extern void PerlIOBase_setlinebuf(PerlIO *f);
136 extern void PerlIOBase_flush_linebuf(void);
138 extern IV PerlIOBase_noop_ok (PerlIO *f);
139 extern IV PerlIOBase_noop_fail (PerlIO *f);
141 /*--------------------------------------------------------------------------------------*/
142 /* perlio buffer layer
143 As this is reasonably generic its struct and "methods" are declared here
144 so they can be used to "inherit" from it.
149 struct _PerlIO base; /* Base "class" info */
150 STDCHAR * buf; /* Start of buffer */
151 STDCHAR * end; /* End of valid part of buffer */
152 STDCHAR * ptr; /* Current position in buffer */
153 Off_t posn; /* Offset of buf into the file */
154 Size_t bufsiz; /* Real size of buffer */
155 IV oneword; /* Emergency buffer */
158 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);
159 extern IV PerlIOBuf_pushed (PerlIO *f, const char *mode,SV *arg);
160 extern SSize_t PerlIOBuf_read (PerlIO *f, void *vbuf, Size_t count);
161 extern SSize_t PerlIOBuf_unread (PerlIO *f, const void *vbuf, Size_t count);
162 extern SSize_t PerlIOBuf_write (PerlIO *f, const void *vbuf, Size_t count);
163 extern IV PerlIOBuf_seek (PerlIO *f, Off_t offset, int whence);
164 extern Off_t PerlIOBuf_tell (PerlIO *f);
165 extern IV PerlIOBuf_close (PerlIO *f);
166 extern IV PerlIOBuf_flush (PerlIO *f);
167 extern IV PerlIOBuf_fill (PerlIO *f);
168 extern STDCHAR *PerlIOBuf_get_base (PerlIO *f);
169 extern Size_t PerlIOBuf_bufsiz (PerlIO *f);
170 extern STDCHAR *PerlIOBuf_get_ptr (PerlIO *f);
171 extern SSize_t PerlIOBuf_get_cnt (PerlIO *f);
172 extern void PerlIOBuf_set_ptrcnt (PerlIO *f, STDCHAR *ptr, SSize_t cnt);
174 extern int PerlIOUnix_oflags (const char *mode);
176 /*--------------------------------------------------------------------------------------*/
178 #endif /* _PERLIOL_H */