1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
|
package libc
import "core:io"
when ODIN_OS == .Windows {
foreign import libc {
"system:libucrt.lib",
"system:legacy_stdio_definitions.lib",
}
} else when ODIN_OS == .Darwin {
foreign import libc "system:System.framework"
} else {
foreign import libc "system:c"
}
// 7.21 Input/output
FILE :: struct {}
// MSVCRT compatible.
when ODIN_OS == .Windows {
_IOFBF :: 0x0000
_IONBF :: 0x0004
_IOLBF :: 0x0040
BUFSIZ :: 512
EOF :: int(-1)
FOPEN_MAX :: 20
FILENAME_MAX :: 260
L_tmpnam :: 15 // "\\" + 12 + NUL
SEEK_SET :: 0
SEEK_CUR :: 1
SEEK_END :: 2
TMP_MAX :: 32767 // SHRT_MAX
fpos_t :: distinct i64
@(private="file")
@(default_calling_convention="c")
foreign libc {
__acrt_iob_func :: proc (index: uint) -> ^FILE ---
}
stdin := __acrt_iob_func(0)
stdout := __acrt_iob_func(1)
stderr := __acrt_iob_func(2)
}
// GLIBC and MUSL compatible.
when ODIN_OS == .Linux {
fpos_t :: struct #raw_union { _: [16]char, _: longlong, _: double, }
_IOFBF :: 0
_IOLBF :: 1
_IONBF :: 2
BUFSIZ :: 1024
EOF :: int(-1)
FOPEN_MAX :: 1000
FILENAME_MAX :: 4096
L_tmpnam :: 20
SEEK_SET :: 0
SEEK_CUR :: 1
SEEK_END :: 2
TMP_MAX :: 308915776
foreign libc {
stderr: ^FILE
stdin: ^FILE
stdout: ^FILE
}
}
when ODIN_OS == .OpenBSD {
fpos_t :: distinct i64
_IOFBF :: 0
_IOLBF :: 1
_IONBF :: 1
BUFSIZ :: 1024
EOF :: int(-1)
FOPEN_MAX :: 20
FILENAME_MAX :: 1024
SEEK_SET :: 0
SEEK_CUR :: 1
SEEK_END :: 2
foreign libc {
stderr: ^FILE
stdin: ^FILE
stdout: ^FILE
}
}
when ODIN_OS == .FreeBSD {
fpos_t :: distinct i64
_IOFBF :: 0
_IOLBF :: 1
_IONBF :: 1
BUFSIZ :: 1024
EOF :: int(-1)
FOPEN_MAX :: 20
FILENAME_MAX :: 1024
SEEK_SET :: 0
SEEK_CUR :: 1
SEEK_END :: 2
foreign libc {
stderr: ^FILE
stdin: ^FILE
stdout: ^FILE
}
}
when ODIN_OS == .Darwin {
fpos_t :: distinct i64
_IOFBF :: 0
_IOLBF :: 1
_IONBF :: 2
BUFSIZ :: 1024
EOF :: int(-1)
FOPEN_MAX :: 20
FILENAME_MAX :: 1024
L_tmpnam :: 1024
SEEK_SET :: 0
SEEK_CUR :: 1
SEEK_END :: 2
TMP_MAX :: 308915776
foreign libc {
@(link_name="__stderrp") stderr: ^FILE
@(link_name="__stdinp") stdin: ^FILE
@(link_name="__stdoutp") stdout: ^FILE
}
}
@(default_calling_convention="c")
foreign libc {
// 7.21.4 Operations on files
remove :: proc(filename: cstring) -> int ---
rename :: proc(old, new: cstring) -> int ---
tmpfile :: proc() -> ^FILE ---
tmpnam :: proc(s: [^]char) -> [^]char ---
// 7.21.5 File access functions
fclose :: proc(stream: ^FILE) -> int ---
fflush :: proc(stream: ^FILE) -> int ---
fopen :: proc(filename, mode: cstring) -> ^FILE ---
freopen :: proc(filename, mode: cstring, stream: ^FILE) -> ^FILE ---
setbuf :: proc(stream: ^FILE, buf: [^]char) ---
setvbuf :: proc(stream: ^FILE, buf: [^]char, mode: int, size: size_t) -> int ---
// 7.21.6 Formatted input/output functions
fprintf :: proc(stream: ^FILE, format: cstring, #c_vararg args: ..any) -> int ---
fscanf :: proc(stream: ^FILE, format: cstring, #c_vararg args: ..any) -> int ---
printf :: proc(format: cstring, #c_vararg args: ..any) -> int ---
scanf :: proc(format: cstring, #c_vararg args: ..any) -> int ---
snprintf :: proc(s: [^]char, n: size_t, format: cstring, #c_vararg args: ..any) -> int ---
sscanf :: proc(s, format: cstring, #c_vararg args: ..any) -> int ---
vfprintf :: proc(stream: ^FILE, format: cstring, arg: ^va_list) -> int ---
vfscanf :: proc(stream: ^FILE, format: cstring, arg: ^va_list) -> int ---
vprintf :: proc(format: cstring, arg: ^va_list) -> int ---
vscanf :: proc(format: cstring, arg: ^va_list) -> int ---
vsnprintf :: proc(s: [^]char, n: size_t, format: cstring, arg: ^va_list) -> int ---
vsprintf :: proc(s: [^]char, format: cstring, arg: ^va_list) -> int ---
vsscanf :: proc(s, format: cstring, arg: ^va_list) -> int ---
// 7.21.7 Character input/output functions
fgetc :: proc(stream: ^FILE) -> int ---
fgets :: proc(s: [^]char, n: int, stream: ^FILE) -> [^]char ---
fputc :: proc(s: cstring, stream: ^FILE) -> int ---
getc :: proc(stream: ^FILE) -> int ---
getchar :: proc() -> int ---
putc :: proc(c: int, stream: ^FILE) -> int ---
putchar :: proc(c: int) -> int ---
puts :: proc(s: cstring) -> int ---
ungetc :: proc(c: int, stream: ^FILE) -> int ---
fread :: proc(ptr: rawptr, size: size_t, nmemb: size_t, stream: ^FILE) -> size_t ---
fwrite :: proc(ptr: rawptr, size: size_t, nmemb: size_t, stream: ^FILE) -> size_t ---
// 7.21.9 File positioning functions
fgetpos :: proc(stream: ^FILE, pos: ^fpos_t) -> int ---
fseek :: proc(stream: ^FILE, offset: long, whence: int) -> int ---
fsetpos :: proc(stream: ^FILE, pos: ^fpos_t) -> int ---
ftell :: proc(stream: ^FILE) -> long ---
rewind :: proc(stream: ^FILE) ---
// 7.21.10 Error-handling functions
clearerr :: proc(stream: ^FILE) ---
feof :: proc(stream: ^FILE) -> int ---
ferror :: proc(stream: ^FILE) -> int ---
perror :: proc(s: cstring) ---
}
to_stream :: proc(file: ^FILE) -> io.Stream {
stream_proc :: proc(stream_data: rawptr, mode: io.Stream_Mode, p: []byte, offset: i64, whence: io.Seek_From) -> (n: i64, err: io.Error) {
unknown_or_eof :: proc(f: ^FILE) -> io.Error {
switch {
case ferror(f) != 0:
return .Unknown
case feof(f) != 0:
return .EOF
case:
return nil
}
}
file := (^FILE)(stream_data)
switch mode {
case .Close:
if fclose(file) != 0 {
return 0, unknown_or_eof(file)
}
case .Flush:
if fflush(file) != 0 {
return 0, unknown_or_eof(file)
}
case .Read:
n = i64(fread(raw_data(p), size_of(byte), len(p), file))
if n == 0 { err = unknown_or_eof(file) }
case .Read_At:
curr := ftell(file)
if curr == -1 {
return 0, unknown_or_eof(file)
}
if fseek(file, long(offset), SEEK_SET) != 0 {
return 0, unknown_or_eof(file)
}
defer fseek(file, long(curr), SEEK_SET)
n = i64(fread(raw_data(p), size_of(byte), len(p), file))
if n == 0 { err = unknown_or_eof(file) }
case .Write:
n = i64(fwrite(raw_data(p), size_of(byte), len(p), file))
if n == 0 { err = unknown_or_eof(file) }
case .Write_At:
curr := ftell(file)
if curr == -1 {
return 0, unknown_or_eof(file)
}
if fseek(file, long(offset), SEEK_SET) != 0 {
return 0, unknown_or_eof(file)
}
defer fseek(file, long(curr), SEEK_SET)
n = i64(fwrite(raw_data(p), size_of(byte), len(p), file))
if n == 0 { err = unknown_or_eof(file) }
case .Seek:
if fseek(file, long(offset), int(whence)) != 0 {
return 0, unknown_or_eof(file)
}
case .Size:
curr := ftell(file)
if curr == -1 {
return 0, unknown_or_eof(file)
}
defer fseek(file, curr, SEEK_SET)
if fseek(file, 0, SEEK_END) != 0 {
return 0, unknown_or_eof(file)
}
n = i64(ftell(file))
if n == -1 {
return 0, unknown_or_eof(file)
}
case .Destroy:
return 0, .Empty
case .Query:
return io.query_utility({ .Close, .Flush, .Read, .Read_At, .Write, .Write_At, .Seek, .Size })
}
return
}
return {
data = file,
procedure = stream_proc,
}
}
|
