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
|
/* -*- mode: C; indent-tabs-mode: t; tab-width: 8; c-basic-offset: 2; -*- */
/*
* This file is part of Seed, the GObject Introspection<->Javascript bindings.
*
* Seed is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2 of
* the License, or (at your option) any later version.
* Seed is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License
* along with Seed. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright (C) Robert Carr 2009 <carrr@rpi.edu>
*/
#include <seed-module.h>
#include <stdio.h>
#include <ffi.h>
#include <readline/readline.h>
#include <readline/history.h>
#include <sys/mman.h>
SeedObject namespace_ref;
SeedEngine *eng;
gboolean readline_has_initialized = FALSE;
static void
seed_handle_rl_closure(ffi_cif * cif, void *result, void **args, void *userdata)
{
SeedContext ctx = seed_context_create(eng->group, NULL);
SeedValue exception = 0;
SeedObject function = (SeedObject) userdata;
seed_object_call(ctx, function, 0, 0, 0, &exception);
if (exception)
{
gchar *mes = seed_exception_to_string(ctx,
exception);
g_warning("Exception in readline bind key closure. %s \n", mes);
}
seed_context_unref((SeedContext) ctx);
}
// "Leaky" in that it exists for lifetime of program,
// kind of unavoidable though.
static ffi_closure *seed_make_rl_closure(SeedObject function)
{
ffi_cif *cif;
ffi_closure *closure;
cif = g_new0(ffi_cif, 1);
closure = mmap(0, sizeof(ffi_closure), PROT_READ | PROT_WRITE |
PROT_EXEC, MAP_ANON | MAP_PRIVATE, -1, 0);
ffi_prep_cif(cif, FFI_DEFAULT_ABI, 0, &ffi_type_sint, 0);
ffi_prep_closure(closure, cif, seed_handle_rl_closure, function);
return closure;
}
static SeedValue
seed_readline_bind(SeedContext ctx,
SeedObject function,
SeedObject this_object,
size_t argument_count,
const SeedValue arguments[], SeedValue * exception)
{
gchar *key;
ffi_closure *c;
CHECK_ARG_COUNT("readline.bind", 2);
key = seed_value_to_string(ctx, arguments[0], exception);
c = seed_make_rl_closure((SeedObject) arguments[1]);
rl_bind_key(*key, (Function *) c);
g_free(key);
return seed_make_null(ctx);
}
static SeedValue
seed_rl_done(SeedContext ctx,
SeedObject function,
SeedObject this_object,
size_t argument_count,
const SeedValue arguments[],
SeedValue * exception)
{
CHECK_ARG_COUNT("readline.done", 0);
rl_done = 1;
return seed_make_null (ctx);
}
static SeedValue
seed_rl_buffer(SeedContext ctx,
SeedObject function,
SeedObject this_object,
size_t argument_count,
const SeedValue arguments[],
SeedValue * exception)
{
CHECK_ARG_COUNT("readline.buffer", 0);
return seed_value_from_string (ctx, rl_line_buffer, exception);
}
static SeedValue
seed_rl_insert(SeedContext ctx,
SeedObject function,
SeedObject this_object,
size_t argument_count,
const SeedValue arguments[],
SeedValue * exception)
{
gchar *ins;
gint ret;
CHECK_ARG_COUNT("readline.insert", 1);
ins = seed_value_to_string (ctx, arguments[0], exception);
ret = rl_insert_text (ins);
g_free (ins);
return seed_value_from_int (ctx, ret, exception);
}
static SeedValue
seed_readline(SeedContext ctx,
SeedObject function,
SeedObject this_object,
size_t argument_count,
const SeedValue arguments[], SeedValue * exception)
{
SeedValue valstr = 0;
gchar *str = NULL;
gchar *buf;
const gchar *histfname = g_get_home_dir();
gchar *path = g_build_filename(histfname, ".seed_history", NULL);
if (!readline_has_initialized)
{
read_history(path);
readline_has_initialized = TRUE;
}
CHECK_ARG_COUNT("readline.readline", 1);
buf = seed_value_to_string(ctx, arguments[0], exception);
str = readline(buf);
if (str && *str)
{
add_history(str);
valstr = seed_value_from_string(ctx, str, exception);
g_free(str);
}
write_history(path);
history_truncate_file(path, 1000);
g_free(buf);
g_free(path);
if (valstr == 0)
valstr = seed_make_null(ctx);
return valstr;
}
seed_static_function readline_funcs[] = {
{"readline", seed_readline, 0},
{"bind", seed_readline_bind, 0},
{"done", seed_rl_done, 0},
{"buffer", seed_rl_buffer, 0},
{"insert", seed_rl_insert, 0},
{NULL, NULL, 0}
};
SeedObject
seed_module_init(SeedEngine * local_eng)
{
seed_class_definition readline_ns_class_def = seed_empty_class;
readline_ns_class_def.static_functions = readline_funcs;
SeedClass readline_ns_class = seed_create_class(&readline_ns_class_def);
eng = local_eng;
namespace_ref = seed_make_object(eng->context, readline_ns_class, 0);
return namespace_ref;
}
|
