-
Notifications
You must be signed in to change notification settings - Fork 138
/
handle.pmc
176 lines (112 loc) · 3.25 KB
/
handle.pmc
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
/*
Copyright (C) 2008-2010, Parrot Foundation.
=head1 NAME
src/pmc/handle.pmc - IO Handle PMC
=head1 DESCRIPTION
This is the base-class for all IO-related PMCs.
=head2 Vtable Functions
=over 4
=item C<init>
=item C<init_pmc>
Handle shouldn't be directly instantiated, init and init_pmc throws
EXCEPTION_INVALID_OPERATION.
=cut
*/
#include "parrot/parrot.h"
#include "../src/io/io_private.h"
/* HEADERIZER HFILE: none */
/* HEADERIZER BEGIN: static */
/* HEADERIZER END: static */
pmclass Handle provides Handle manual_attrs {
/* TODO: Consider encapsulating PIOHANDLE as a PMC type, for subclassing */
ATTR PIOHANDLE os_handle; /* Low level OS descriptor */
ATTR INTVAL record_separator; /* Record separator (only single char
* supported) */
VTABLE void init() {
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_INVALID_OPERATION,
"Handle cannot be instantiated directly.");
}
VTABLE void init_pmc(PMC * init) {
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_INVALID_OPERATION,
"Handle cannot be instantiated directly.");
}
/*
=back
=head2 Methods
=over 4
=item C<METHOD isatty()>
Returns a boolean value indicating whether C<SELF> is a console/tty.
This default implementation always return false. Override it in
subtypes that are or can be tty.
=cut
*/
METHOD isatty() {
RETURN(INTVAL 0);
}
/*
=item C<METHOD get_fd()>
Retrieve the integer file descriptor for the Handle (only available on
platforms that use integer file descriptors).
=cut
*/
METHOD get_fd() {
PIOHANDLE os_handle;
INTVAL fd;
GET_ATTR_os_handle(INTERP, SELF, os_handle);
fd = (INTVAL)os_handle;
RETURN(INTVAL fd);
}
/*
=item C<METHOD read(INTVAL bytes)>
Read the given number of bytes from the handle and return them in a string.
=cut
*/
METHOD read(INTVAL length) {
STRING * const string_result = Parrot_io_reads(INTERP, SELF, length);
RETURN(STRING *string_result);
}
/*
=item C<METHOD readline()>
Read a line from the handle and return it in a string.
=cut
*/
METHOD readline() {
STRING * const string_result = Parrot_io_readline(INTERP, SELF);
RETURN(STRING *string_result);
}
/*
=item C<METHOD record_separator()>
Set the record separator for readline.
=cut
*/
METHOD record_separator(STRING *str :optional, int has_str :opt_flag) {
INTVAL c;
if (has_str) {
if (STRING_length(str) != 1)
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_INVALID_OPERATION,
"Record separator must be a single character");
c = STRING_ord(interp, str, 0);
SET_ATTR_record_separator(INTERP, SELF, c);
}
else {
GET_ATTR_record_separator(INTERP, SELF, c);
str = Parrot_str_chr(interp, c);
}
RETURN(STRING *str);
}
/*
=item C<METHOD close()>
Close the handle.
=cut
*/
METHOD close() {
const INTVAL status = Parrot_io_close_handle(INTERP, SELF);
RETURN(INTVAL status);
}
}
/*
* Local variables:
* c-file-style: "parrot"
* End:
* vim: expandtab shiftwidth=4 cinoptions='\:2=2' :
*/