source:
rtems/cpukit/libcsupport/src/assoc.c
@
3ba74c73
Last change on this file since 3ba74c73 was 3ba74c73, checked in by Joel Sherrill <joel.sherrill@…>, on 11/01/00 at 21:08:14 | |
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File size: 4.6 KB |
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1 | /* |
2 | * assoc.c |
3 | * rtems assoc routines |
4 | * |
5 | * $Id$ |
6 | */ |
7 | |
8 | #include <rtems.h> |
9 | #include <rtems/assoc.h> |
10 | |
11 | #include <string.h> /* strcat, strcmp */ |
12 | |
13 | #define STREQ(a,b) (strcmp((a), (b)) == 0) |
14 | #define rtems_assoc_is_default(ap) ((ap)->name && STREQ(ap->name, RTEMS_ASSOC_DEFAULT_NAME)) |
15 | |
16 | const rtems_assoc_t * |
17 | rtems_assoc_ptr_by_name( |
18 | const rtems_assoc_t *ap, |
19 | const char *name |
20 | ) |
21 | { |
22 | const rtems_assoc_t *default_ap = 0; |
23 | |
24 | if (rtems_assoc_is_default(ap)) |
25 | default_ap = ap++; |
26 | |
27 | for ( ; ap->name; ap++) |
28 | if (strcmp(ap->name, name) == 0) |
29 | return ap; |
30 | |
31 | return default_ap; |
32 | } |
33 | |
34 | const rtems_assoc_t * |
35 | rtems_assoc_ptr_by_local( |
36 | const rtems_assoc_t *ap, |
37 | unsigned32 local_value |
38 | ) |
39 | { |
40 | const rtems_assoc_t *default_ap = 0; |
41 | |
42 | if (rtems_assoc_is_default(ap)) |
43 | default_ap = ap++; |
44 | |
45 | for ( ; ap->name; ap++) |
46 | if (ap->local_value == local_value) |
47 | return ap; |
48 | |
49 | return default_ap; |
50 | } |
51 | |
52 | |
53 | const rtems_assoc_t * |
54 | rtems_assoc_ptr_by_remote( |
55 | const rtems_assoc_t *ap, |
56 | unsigned32 remote_value |
57 | ) |
58 | { |
59 | const rtems_assoc_t *default_ap = 0; |
60 | |
61 | if (rtems_assoc_is_default(ap)) |
62 | default_ap = ap++; |
63 | |
64 | for ( ; ap->name; ap++) |
65 | if (ap->remote_value == remote_value) |
66 | return ap; |
67 | |
68 | return default_ap; |
69 | } |
70 | |
71 | |
72 | /* |
73 | * Get values |
74 | */ |
75 | |
76 | unsigned32 |
77 | rtems_assoc_remote_by_local( |
78 | const rtems_assoc_t *ap, |
79 | unsigned32 local_value |
80 | ) |
81 | { |
82 | const rtems_assoc_t *nap; |
83 | nap = rtems_assoc_ptr_by_local(ap, local_value); |
84 | if (nap) |
85 | return nap->remote_value; |
86 | |
87 | return 0; |
88 | } |
89 | |
90 | unsigned32 |
91 | rtems_assoc_local_by_remote( |
92 | const rtems_assoc_t *ap, |
93 | unsigned32 remote_value |
94 | ) |
95 | { |
96 | const rtems_assoc_t *nap; |
97 | nap = rtems_assoc_ptr_by_remote(ap, remote_value); |
98 | if (nap) |
99 | return nap->local_value; |
100 | |
101 | return 0; |
102 | } |
103 | |
104 | unsigned32 |
105 | rtems_assoc_remote_by_name( |
106 | const rtems_assoc_t *ap, |
107 | const char *name |
108 | ) |
109 | { |
110 | const rtems_assoc_t *nap; |
111 | nap = rtems_assoc_ptr_by_name(ap, name); |
112 | if (nap) |
113 | return nap->remote_value; |
114 | |
115 | return 0; |
116 | } |
117 | |
118 | unsigned32 |
119 | rtems_assoc_local_by_name( |
120 | const rtems_assoc_t *ap, |
121 | const char *name |
122 | ) |
123 | { |
124 | const rtems_assoc_t *nap; |
125 | nap = rtems_assoc_ptr_by_name(ap, name); |
126 | if (nap) |
127 | return nap->local_value; |
128 | |
129 | return 0; |
130 | } |
131 | |
132 | /* |
133 | * what to return if a value is not found |
134 | * this is not reentrant, but it really shouldn't be invoked anyway |
135 | */ |
136 | |
137 | const char *rtems_assoc_name_bad( |
138 | unsigned32 bad_value |
139 | ); |
140 | |
141 | /* body in separate file to reduce dependency on printf */ |
142 | |
143 | |
144 | const char * |
145 | rtems_assoc_name_by_local( |
146 | const rtems_assoc_t *ap, |
147 | unsigned32 local_value |
148 | ) |
149 | { |
150 | const rtems_assoc_t *nap; |
151 | nap = rtems_assoc_ptr_by_local(ap, local_value); |
152 | if (nap) |
153 | return nap->name; |
154 | |
155 | return rtems_assoc_name_bad(local_value); |
156 | } |
157 | |
158 | const char * |
159 | rtems_assoc_name_by_remote( |
160 | const rtems_assoc_t *ap, |
161 | unsigned32 remote_value |
162 | ) |
163 | { |
164 | const rtems_assoc_t *nap; |
165 | nap = rtems_assoc_ptr_by_remote(ap, remote_value); |
166 | if (nap) |
167 | return nap->name; |
168 | |
169 | return rtems_assoc_name_bad(remote_value); |
170 | } |
171 | |
172 | /* |
173 | * Bitfield functions assume just 1 bit set in each of remote and local |
174 | * entries; they do not check for this. |
175 | */ |
176 | |
177 | unsigned32 rtems_assoc_remote_by_local_bitfield( |
178 | const rtems_assoc_t *ap, |
179 | unsigned32 local_value |
180 | ) |
181 | { |
182 | unsigned32 b; |
183 | unsigned32 remote_value = 0; |
184 | |
185 | for (b = 1; b; b <<= 1) |
186 | if (b & local_value) |
187 | remote_value |= rtems_assoc_remote_by_local(ap, b); |
188 | |
189 | return remote_value; |
190 | } |
191 | |
192 | |
193 | unsigned32 rtems_assoc_local_by_remote_bitfield( |
194 | const rtems_assoc_t *ap, |
195 | unsigned32 remote_value |
196 | ) |
197 | { |
198 | unsigned32 b; |
199 | unsigned32 local_value = 0; |
200 | |
201 | for (b = 1; b; b <<= 1) |
202 | if (b & remote_value) |
203 | local_value |= rtems_assoc_local_by_remote(ap, b); |
204 | |
205 | return local_value; |
206 | } |
207 | |
208 | char * |
209 | rtems_assoc_name_by_remote_bitfield( |
210 | const rtems_assoc_t *ap, |
211 | unsigned32 value, |
212 | char *buffer |
213 | ) |
214 | { |
215 | unsigned32 b; |
216 | |
217 | *buffer = 0; |
218 | |
219 | for (b = 1; b; b <<= 1) |
220 | if (b & value) |
221 | { |
222 | if (*buffer) |
223 | strcat(buffer, " "); |
224 | strcat(buffer, rtems_assoc_name_by_remote(ap, b)); |
225 | } |
226 | |
227 | return buffer; |
228 | } |
229 | |
230 | char * |
231 | rtems_assoc_name_by_local_bitfield( |
232 | const rtems_assoc_t *ap, |
233 | unsigned32 value, |
234 | char *buffer |
235 | ) |
236 | { |
237 | unsigned32 b; |
238 | |
239 | *buffer = 0; |
240 | |
241 | for (b = 1; b; b <<= 1) |
242 | if (b & value) |
243 | { |
244 | if (*buffer) |
245 | strcat(buffer, " "); |
246 | strcat(buffer, rtems_assoc_name_by_local(ap, b)); |
247 | } |
248 | |
249 | return buffer; |
250 | } |
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