1 | #ifndef _PERLIOL_H |
---|
2 | #define _PERLIOL_H |
---|
3 | |
---|
4 | typedef struct { |
---|
5 | PerlIO_funcs *funcs; |
---|
6 | SV *arg; |
---|
7 | } PerlIO_pair_t; |
---|
8 | |
---|
9 | struct PerlIO_list_s { |
---|
10 | IV refcnt; |
---|
11 | IV cur; |
---|
12 | IV len; |
---|
13 | PerlIO_pair_t *array; |
---|
14 | }; |
---|
15 | |
---|
16 | struct _PerlIO_funcs { |
---|
17 | Size_t fsize; |
---|
18 | char *name; |
---|
19 | Size_t size; |
---|
20 | U32 kind; |
---|
21 | IV (*Pushed) (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab); |
---|
22 | IV (*Popped) (pTHX_ PerlIO *f); |
---|
23 | PerlIO *(*Open) (pTHX_ PerlIO_funcs *tab, |
---|
24 | PerlIO_list_t *layers, IV n, |
---|
25 | const char *mode, |
---|
26 | int fd, int imode, int perm, |
---|
27 | PerlIO *old, int narg, SV **args); |
---|
28 | IV (*Binmode)(pTHX_ PerlIO *f); |
---|
29 | SV *(*Getarg) (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags); |
---|
30 | IV (*Fileno) (pTHX_ PerlIO *f); |
---|
31 | PerlIO *(*Dup) (pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags); |
---|
32 | /* Unix-like functions - cf sfio line disciplines */ |
---|
33 | SSize_t(*Read) (pTHX_ PerlIO *f, void *vbuf, Size_t count); |
---|
34 | SSize_t(*Unread) (pTHX_ PerlIO *f, const void *vbuf, Size_t count); |
---|
35 | SSize_t(*Write) (pTHX_ PerlIO *f, const void *vbuf, Size_t count); |
---|
36 | IV (*Seek) (pTHX_ PerlIO *f, Off_t offset, int whence); |
---|
37 | Off_t(*Tell) (pTHX_ PerlIO *f); |
---|
38 | IV (*Close) (pTHX_ PerlIO *f); |
---|
39 | /* Stdio-like buffered IO functions */ |
---|
40 | IV (*Flush) (pTHX_ PerlIO *f); |
---|
41 | IV (*Fill) (pTHX_ PerlIO *f); |
---|
42 | IV (*Eof) (pTHX_ PerlIO *f); |
---|
43 | IV (*Error) (pTHX_ PerlIO *f); |
---|
44 | void (*Clearerr) (pTHX_ PerlIO *f); |
---|
45 | void (*Setlinebuf) (pTHX_ PerlIO *f); |
---|
46 | /* Perl's snooping functions */ |
---|
47 | STDCHAR *(*Get_base) (pTHX_ PerlIO *f); |
---|
48 | Size_t(*Get_bufsiz) (pTHX_ PerlIO *f); |
---|
49 | STDCHAR *(*Get_ptr) (pTHX_ PerlIO *f); |
---|
50 | SSize_t(*Get_cnt) (pTHX_ PerlIO *f); |
---|
51 | void (*Set_ptrcnt) (pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt); |
---|
52 | }; |
---|
53 | |
---|
54 | /*--------------------------------------------------------------------------------------*/ |
---|
55 | /* Kind values */ |
---|
56 | #define PERLIO_K_RAW 0x00000001 |
---|
57 | #define PERLIO_K_BUFFERED 0x00000002 |
---|
58 | #define PERLIO_K_CANCRLF 0x00000004 |
---|
59 | #define PERLIO_K_FASTGETS 0x00000008 |
---|
60 | #define PERLIO_K_DUMMY 0x00000010 |
---|
61 | #define PERLIO_K_UTF8 0x00008000 |
---|
62 | #define PERLIO_K_DESTRUCT 0x00010000 |
---|
63 | #define PERLIO_K_MULTIARG 0x00020000 |
---|
64 | |
---|
65 | /*--------------------------------------------------------------------------------------*/ |
---|
66 | struct _PerlIO { |
---|
67 | PerlIOl *next; /* Lower layer */ |
---|
68 | PerlIO_funcs *tab; /* Functions for this layer */ |
---|
69 | U32 flags; /* Various flags for state */ |
---|
70 | }; |
---|
71 | |
---|
72 | /*--------------------------------------------------------------------------------------*/ |
---|
73 | |
---|
74 | /* Flag values */ |
---|
75 | #define PERLIO_F_EOF 0x00000100 |
---|
76 | #define PERLIO_F_CANWRITE 0x00000200 |
---|
77 | #define PERLIO_F_CANREAD 0x00000400 |
---|
78 | #define PERLIO_F_ERROR 0x00000800 |
---|
79 | #define PERLIO_F_TRUNCATE 0x00001000 |
---|
80 | #define PERLIO_F_APPEND 0x00002000 |
---|
81 | #define PERLIO_F_CRLF 0x00004000 |
---|
82 | #define PERLIO_F_UTF8 0x00008000 |
---|
83 | #define PERLIO_F_UNBUF 0x00010000 |
---|
84 | #define PERLIO_F_WRBUF 0x00020000 |
---|
85 | #define PERLIO_F_RDBUF 0x00040000 |
---|
86 | #define PERLIO_F_LINEBUF 0x00080000 |
---|
87 | #define PERLIO_F_TEMP 0x00100000 |
---|
88 | #define PERLIO_F_OPEN 0x00200000 |
---|
89 | #define PERLIO_F_FASTGETS 0x00400000 |
---|
90 | #define PERLIO_F_TTY 0x00800000 |
---|
91 | #define PERLIO_F_NOTREG 0x01000000 |
---|
92 | |
---|
93 | #define PerlIOBase(f) (*(f)) |
---|
94 | #define PerlIOSelf(f,type) ((type *)PerlIOBase(f)) |
---|
95 | #define PerlIONext(f) (&(PerlIOBase(f)->next)) |
---|
96 | #define PerlIOValid(f) ((f) && *(f)) |
---|
97 | |
---|
98 | /*--------------------------------------------------------------------------------------*/ |
---|
99 | /* Data exports - EXT rather than extern is needed for Cygwin */ |
---|
100 | EXT PerlIO_funcs PerlIO_unix; |
---|
101 | EXT PerlIO_funcs PerlIO_perlio; |
---|
102 | EXT PerlIO_funcs PerlIO_stdio; |
---|
103 | EXT PerlIO_funcs PerlIO_crlf; |
---|
104 | EXT PerlIO_funcs PerlIO_utf8; |
---|
105 | EXT PerlIO_funcs PerlIO_byte; |
---|
106 | EXT PerlIO_funcs PerlIO_raw; |
---|
107 | EXT PerlIO_funcs PerlIO_pending; |
---|
108 | #ifdef HAS_MMAP |
---|
109 | EXT PerlIO_funcs PerlIO_mmap; |
---|
110 | #endif |
---|
111 | #ifdef WIN32 |
---|
112 | EXT PerlIO_funcs PerlIO_win32; |
---|
113 | #endif |
---|
114 | extern PerlIO *PerlIO_allocate(pTHX); |
---|
115 | extern SV *PerlIO_arg_fetch(PerlIO_list_t *av, IV n); |
---|
116 | #define PerlIOArg PerlIO_arg_fetch(layers,n) |
---|
117 | |
---|
118 | #ifdef PERLIO_USING_CRLF |
---|
119 | #define PERLIO_STDTEXT "t" |
---|
120 | #else |
---|
121 | #define PERLIO_STDTEXT "" |
---|
122 | #endif |
---|
123 | |
---|
124 | /*--------------------------------------------------------------------------------------*/ |
---|
125 | /* Generic, or stub layer functions */ |
---|
126 | |
---|
127 | extern IV PerlIOBase_fileno(pTHX_ PerlIO *f); |
---|
128 | extern PerlIO *PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags); |
---|
129 | extern IV PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab); |
---|
130 | extern IV PerlIOBase_popped(pTHX_ PerlIO *f); |
---|
131 | extern IV PerlIOBase_binmode(pTHX_ PerlIO *f); |
---|
132 | extern SSize_t PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count); |
---|
133 | extern SSize_t PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, |
---|
134 | Size_t count); |
---|
135 | extern IV PerlIOBase_eof(pTHX_ PerlIO *f); |
---|
136 | extern IV PerlIOBase_error(pTHX_ PerlIO *f); |
---|
137 | extern void PerlIOBase_clearerr(pTHX_ PerlIO *f); |
---|
138 | extern IV PerlIOBase_close(pTHX_ PerlIO *f); |
---|
139 | extern void PerlIOBase_setlinebuf(pTHX_ PerlIO *f); |
---|
140 | extern void PerlIOBase_flush_linebuf(pTHX); |
---|
141 | |
---|
142 | extern IV PerlIOBase_noop_ok(pTHX_ PerlIO *f); |
---|
143 | extern IV PerlIOBase_noop_fail(pTHX_ PerlIO *f); |
---|
144 | |
---|
145 | /*--------------------------------------------------------------------------------------*/ |
---|
146 | /* perlio buffer layer |
---|
147 | As this is reasonably generic its struct and "methods" are declared here |
---|
148 | so they can be used to "inherit" from it. |
---|
149 | */ |
---|
150 | |
---|
151 | typedef struct { |
---|
152 | struct _PerlIO base; /* Base "class" info */ |
---|
153 | STDCHAR *buf; /* Start of buffer */ |
---|
154 | STDCHAR *end; /* End of valid part of buffer */ |
---|
155 | STDCHAR *ptr; /* Current position in buffer */ |
---|
156 | Off_t posn; /* Offset of buf into the file */ |
---|
157 | Size_t bufsiz; /* Real size of buffer */ |
---|
158 | IV oneword; /* Emergency buffer */ |
---|
159 | } PerlIOBuf; |
---|
160 | |
---|
161 | extern int PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
---|
162 | PerlIO_list_t *layers, IV n, IV max); |
---|
163 | extern int PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names); |
---|
164 | extern void PerlIO_list_free(pTHX_ PerlIO_list_t *list); |
---|
165 | extern PerlIO_funcs *PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def); |
---|
166 | |
---|
167 | |
---|
168 | extern SV *PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param); |
---|
169 | extern PerlIO *PerlIOBuf_open(pTHX_ PerlIO_funcs *self, |
---|
170 | PerlIO_list_t *layers, IV n, |
---|
171 | const char *mode, int fd, int imode, |
---|
172 | int perm, PerlIO *old, int narg, SV **args); |
---|
173 | extern IV PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab); |
---|
174 | extern IV PerlIOBuf_popped(pTHX_ PerlIO *f); |
---|
175 | extern PerlIO *PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags); |
---|
176 | extern SSize_t PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count); |
---|
177 | extern SSize_t PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count); |
---|
178 | extern SSize_t PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count); |
---|
179 | extern IV PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence); |
---|
180 | extern Off_t PerlIOBuf_tell(pTHX_ PerlIO *f); |
---|
181 | extern IV PerlIOBuf_close(pTHX_ PerlIO *f); |
---|
182 | extern IV PerlIOBuf_flush(pTHX_ PerlIO *f); |
---|
183 | extern IV PerlIOBuf_fill(pTHX_ PerlIO *f); |
---|
184 | extern STDCHAR *PerlIOBuf_get_base(pTHX_ PerlIO *f); |
---|
185 | extern Size_t PerlIOBuf_bufsiz(pTHX_ PerlIO *f); |
---|
186 | extern STDCHAR *PerlIOBuf_get_ptr(pTHX_ PerlIO *f); |
---|
187 | extern SSize_t PerlIOBuf_get_cnt(pTHX_ PerlIO *f); |
---|
188 | extern void PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt); |
---|
189 | |
---|
190 | extern int PerlIOUnix_oflags(const char *mode); |
---|
191 | |
---|
192 | /*--------------------------------------------------------------------------------------*/ |
---|
193 | |
---|
194 | #endif /* _PERLIOL_H */ |
---|