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
|
/* -*- mode: C; mode: fold; -*- */
/* slnspace.c --- Name Space implementation */
/* Copyright (c) 1992, 1999, 2001, 2002, 2003 John E. Davis
* This file is part of the S-Lang library.
*
* You may distribute under the terms of either the GNU General Public
* License or the Perl Artistic License.
*/
#include "slinclud.h"
#include "slang.h"
#include "_slang.h"
static SLang_NameSpace_Type *Namespace_Tables;
static SLang_NameSpace_Type *find_name_table (char *name)
{
SLang_NameSpace_Type *table_list;
table_list = Namespace_Tables;
while (table_list != NULL)
{
if (0 == strcmp (table_list->name, name))
break;
table_list = table_list->next;
}
return table_list;
}
SLang_NameSpace_Type *_SLns_find_namespace (char *name)
{
SLang_NameSpace_Type *table_list;
table_list = Namespace_Tables;
while (table_list != NULL)
{
if ((table_list->namespace_name != NULL)
&& (0 == strcmp (table_list->namespace_name, name)))
break;
table_list = table_list->next;
}
return table_list;
}
SLang_NameSpace_Type *_SLns_allocate_namespace (char *name, unsigned int size)
{
SLang_NameSpace_Type *table_list;
SLang_Name_Type **nt;
static int num;
char namebuf[64];
if (name == NULL)
{
sprintf (namebuf, " *** internal ns <%d> *** ", num);
name = namebuf;
num++;
}
if (NULL != (table_list = find_name_table (name)))
return table_list;
if (NULL == (name = SLang_create_slstring (name)))
return NULL;
if (NULL == (table_list = (SLang_NameSpace_Type *)
SLmalloc (sizeof (SLang_NameSpace_Type))))
{
SLang_free_slstring (name);
return NULL;
}
if (NULL == (nt = (SLang_Name_Type **) SLmalloc (sizeof (SLang_Name_Type *) * size)))
{
SLang_free_slstring (name);
SLfree ((char *)table_list);
return NULL;
}
memset ((char *)nt, 0, size * sizeof (SLang_Name_Type *));
memset ((char *) table_list, 0, sizeof (SLang_NameSpace_Type));
table_list->name = name;
table_list->table = nt;
table_list->table_size = size;
table_list->next = Namespace_Tables;
Namespace_Tables = table_list;
return table_list;
}
int _SLns_set_namespace_name (SLang_NameSpace_Type *t, char *name)
{
SLang_NameSpace_Type *t1;
t1 = _SLns_find_namespace (name);
if (t == t1)
return 0; /* already has this name */
if (t1 == NULL)
t1 = t;
if ((t != t1) || (*name == 0))
{
SLang_verror (SL_INTRINSIC_ERROR, "Namespace \"%s\" already exists",
name);
return -1;
}
if (t->namespace_name != NULL)
{
SLang_verror (SL_INTRINSIC_ERROR, "An attempt was made to redefine namespace from \"%s\" to \"%s\"\n",
t->namespace_name, name);
return -1;
}
if (NULL == (name = SLang_create_slstring (name)))
return -1;
SLang_free_slstring (t->namespace_name); /* NULL ok */
t->namespace_name = name;
return 0;
}
SLang_Array_Type *_SLnspace_apropos (SLang_NameSpace_Type *ns, char *pat, unsigned int what)
{
SLang_Array_Type *at;
unsigned int table_size;
SLang_Name_Type *t, **table;
int num_matches;
unsigned int i;
SLRegexp_Type rexp;
unsigned char rbuf[512];
unsigned int two;
at = NULL;
if ((ns == NULL)
|| ((table = ns->table) == NULL))
return NULL;
memset ((char *) &rexp, 0, sizeof (SLRegexp_Type));
rexp.case_sensitive = 1;
rexp.buf = rbuf;
rexp.buf_len = sizeof (rbuf);
rexp.pat = (unsigned char *)pat;
if (0 != SLang_regexp_compile (&rexp))
{
SLang_verror (SL_INVALID_PARM, "Invalid regular expression: %s", pat);
return NULL;
}
table_size = ns->table_size;
two = 2;
while (two != 0)
{
two--;
num_matches = 0;
for (i = 0; i < table_size; i++)
{
t = table[i];
while (t != NULL)
{
unsigned int flags;
char *name = t->name;
switch (t->name_type)
{
case SLANG_GVARIABLE:
flags = 8;
break;
case SLANG_ICONSTANT:
case SLANG_DCONSTANT:
case SLANG_RVARIABLE:
case SLANG_IVARIABLE:
flags = 4;
break;
case SLANG_INTRINSIC:
case SLANG_MATH_UNARY:
case SLANG_APP_UNARY:
flags = 1;
break;
case SLANG_FUNCTION:
flags = 2;
break;
default:
flags = 0;
break;
}
if ((flags & what)
&& (NULL != SLang_regexp_match ((unsigned char *)name, strlen (name), &rexp)))
{
if (at != NULL)
{
if (-1 == SLang_set_array_element (at, &num_matches, (VOID_STAR)&name))
goto return_error;
}
num_matches++;
}
t = t->next;
}
}
if (at == NULL)
{
at = SLang_create_array (SLANG_STRING_TYPE, 0, NULL, &num_matches, 1);
if (at == NULL)
goto return_error;
}
}
return at;
return_error:
SLang_free_array (at);
return NULL;
}
SLang_NameSpace_Type *SLns_create_namespace (char *namespace_name)
{
SLang_NameSpace_Type *ns;
if (namespace_name == NULL)
namespace_name = "Global";
ns = _SLns_find_namespace (namespace_name);
if (ns != NULL)
return ns;
if (NULL == (ns = _SLns_allocate_namespace (NULL, SLSTATIC_HASH_TABLE_SIZE)))
return NULL;
if (-1 == _SLns_set_namespace_name (ns, namespace_name))
{
SLns_delete_namespace (ns);
return NULL;
}
return ns;
}
void SLns_delete_namespace (SLang_NameSpace_Type *ns)
{
(void) ns;
/* V2.0 */
}
SLang_Array_Type *_SLns_list_namespaces (void)
{
SLang_NameSpace_Type *table_list;
SLang_Array_Type *at;
int num, i;
num = 0;
table_list = Namespace_Tables;
while (table_list != NULL)
{
if (table_list->namespace_name != NULL)
num++;
table_list = table_list->next;
}
at = SLang_create_array (SLANG_STRING_TYPE, 0, NULL, &num, 1);
if (at == NULL)
return NULL;
table_list = Namespace_Tables;
i = 0;
while ((table_list != NULL)
&& (i < num))
{
if (table_list->namespace_name != NULL)
{
char *name = table_list->namespace_name;
if (-1 == SLang_set_array_element (at, &i, (VOID_STAR)&name))
{
SLang_free_array (at);
return NULL;
}
i++;
}
table_list = table_list->next;
}
return at;
}
|
