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
|
/*
* Copyright (c) 1995
* Paul Richards. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* verbatim and that no modifications are made prior to this
* point in the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Paul Richards.
* 4. The name Paul Richards may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL PAUL RICHARDS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <strhash.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ncurses.h>
#include <forms.h>
#include <err.h>
#include "internal.h"
extern FILE *yyin;
hash_table *root_table, *cbind;
OBJECT *cur_obj;
int done;
/* Default attribute commands */
struct attr_cmnd attr_cmnds[] = {
{"box", ATTR_BOX },
{"center", ATTR_CENTER },
{"right", ATTR_RIGHT }
};
/* Internal bindings */
struct intbind {
char *key;
void *addr;
};
struct intbind internal_bindings[] = {
{"draw_box", &draw_box},
{"draw_shadow", &draw_shadow}
};
/* Bind the internal function addresses */
void
bind_internals(hash_table *table)
{
int i;
for (i=0; i < (sizeof internal_bindings)/(sizeof (struct intbind)); i++)
if (bind_tuple(table, internal_bindings[i].key,
TT_FUNC, internal_bindings[i].addr) == ST_ERROR)
errx(-1, "Failed to bind internal tuples");
}
/*
* Find the default device and open a display on it.
*/
DISPLAY *
default_open(DISPLAY *display)
{
/* XXX -- not implemented, just calls ncurses */
return (ncurses_open(display));
}
int
load_objects(const char *filename)
{
FILE *fd;
root_table = hash_create(0);
if (!root_table)
errx(-1, "Failed to allocate root bindings table");
cbind = root_table;
bind_internals(root_table);
if (!(fd = fopen(filename, "r"))) {
warn("Couldn't open file %s", filename);
return (ST_ERROR);
}
yyin = fd;
yyparse();
if (fclose(fd)) {
warn("Couldn't close file %s", filename);
return (ST_ERROR);
}
return (ST_OK);
}
int
start_object(char *objname)
{
TUPLE *tuple;
OBJECT *object;
tuple = get_tuple(root_table, objname, TT_OBJ_INST);
if (!tuple)
return (ST_NOBIND);
object = (OBJECT *)tuple->addr;
cur_obj = object;
set_display(object->display);
cur_obj->status |= O_VISIBLE;
while (!done) {
hash_traverse(root_table, &display_tuples, root_table);
hash_traverse(root_table, &refresh_displays, root_table);
process_object(cur_obj);
}
return (ST_DONE);
}
int
call_function(char *func, OBJECT *obj)
{
TUPLE *tuple;
tuple = tuple_search(obj, func, TT_FUNC);
if (!tuple)
return (0);
(*tuple->addr)(obj);
return (1);
}
set_display(DISPLAY *display)
{
switch (display->type) {
case DT_NCURSES:
ncurses_set_display(display);
break;
default:
break;
}
}
void
display_object(OBJECT *obj)
{
switch(obj->display->type) {
case DT_NCURSES:
ncurses_display_object(obj);
break;
default:
break;
}
}
void
process_object(OBJECT *obj)
{
TUPLE *tuple;
/* Call user routine, if there is one. */
if (obj->UserProcFunc)
if (call_function(obj->UserProcFunc, obj))
return;
/* Find the first non-compound object or a default override */
while (obj->type == OT_COMPOUND) {
tuple = tuple_search(obj, obj->object.compound->defobj, TT_OBJ_INST);
obj = (OBJECT *)tuple->addr;
}
cur_obj = obj;
switch(obj->display->type) {
case DT_NCURSES:
ncurses_process_object(obj);
break;
default:
break;
}
}
int
refresh_displays(char *key, void *data, void *arg)
{
TUPLE *tuple = (TUPLE *)data;
DISPLAY *display;
if (tuple->type == TT_DISPLAY)
display = (DISPLAY *)tuple->addr;
switch (display->type) {
case DT_NCURSES:
ncurses_refresh_display(display);
break;
default:
break;
}
return (1);
}
int
display_tuples(char *key, void *data, void *arg)
{
TUPLE *tuple = (TUPLE *)data;
OBJECT *obj;
void (* fn)();
switch(tuple->type) {
case TT_OBJ_INST:
obj = (OBJECT *)tuple->addr;
/* Call user routine, if there is one. */
if (obj->UserDrawFunc) {
if (!call_function(obj->UserDrawFunc, obj))
display_object(obj);
} else
display_object(obj);
/* Display sub-objects */
if (obj->bind)
hash_traverse(obj->bind, &display_tuples, 0);
break;
default:
break;
}
return (1);
}
AttrType
parse_default_attributes(char *string)
{
int i;
for (i=0; i < (sizeof attr_cmnds) / (sizeof (struct attr_cmnd)); i++)
if (!strcmp(string, attr_cmnds[i].attr_name))
return (attr_cmnds[i].attr_type);
return (ATTR_UNKNOWN);
}
|