-
Notifications
You must be signed in to change notification settings - Fork 1
/
CVector.c
403 lines (240 loc) · 12.8 KB
/
CVector.c
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
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
/*
* CVector.c
* CVector
*
* Created by Herbert J. Bernstein on 11/28/08.
* Copyright 2008 Herbert J. Bernstein. All rights reserved.
*
*/
/**********************************************************************
* *
* YOU MAY REDISTRIBUTE THE CVector API UNDER THE TERMS OF THE LGPL *
* *
**********************************************************************/
/************************* LGPL NOTICES *******************************
* *
* This library 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 2.1 of the License, or (at your option) any later version. *
* *
* This library 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 this library; if not, write to the Free *
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *
* MA 02110-1301 USA *
* *
**********************************************************************/
#ifdef __cplusplus
extern "C" {
#endif
#ifdef USE_LOCAL_HEADERS
#include "CVector.h"
#else
#include <CVector.h>
#endif
/* CVectorCreate -- create a generic vector */
int CVectorCreate(CVectorHandle CVECTOR_FAR * vectorhandle, const size_t elementsize, const size_t capacity) {
size_t cap = capacity;
if (vectorhandle==NULL) { return CVECTOR_BAD_ARGUMENT; }
*vectorhandle = (CVectorHandle)CVECTOR_MALLOC(sizeof(CVector));
if (*vectorhandle==NULL) {
return CVECTOR_MALLOC_FAILED;
}
(*vectorhandle)->size = 0;
(*vectorhandle)->flags = 0;
(*vectorhandle)->capacity = 0;
(*vectorhandle)->elementsize = elementsize;
if (!cap) { cap = 10; }
(*vectorhandle)->array = (void CVECTOR_FAR *)CVECTOR_MALLOC(cap*elementsize);
if ((*vectorhandle)->array) {
(*vectorhandle)->capacity = cap;
return 0;
}
CVECTOR_FREE(*vectorhandle);
*vectorhandle = NULL;
return CVECTOR_MALLOC_FAILED;
}
/* CVectorAddElement -- add an element to a generic vector
equivalent to vector::push_back */
int CVectorAddElement(const CVectorHandle vectorhandle, const void CVECTOR_FAR * element) {
size_t newcap;
int errorcode;
if (vectorhandle==NULL) { return CVECTOR_BAD_ARGUMENT; }
if ( (vectorhandle->flags&CVECTOR_FLAGS_NO_RESIZE) ) { return CVECTOR_NO_RESIZE; }
if (vectorhandle->size >= vectorhandle->capacity) {
newcap = vectorhandle->capacity*2;
if (newcap < 1) { newcap = 1; }
errorcode = CVectorSetCapacity (vectorhandle, newcap);
if (errorcode != 0) {
newcap = vectorhandle->capacity+(size_t)(vectorhandle->capacity>>2);
if (newcap < 1) { newcap = 1; }
errorcode = CVectorSetCapacity (vectorhandle, newcap);
if (errorcode != 0) { return errorcode; }
}
}
CVECTOR_MEMMOVE(((char CVECTOR_FAR *)(vectorhandle->array))+vectorhandle->size*vectorhandle->elementsize,
(const char CVECTOR_FAR *)element, vectorhandle->elementsize);
vectorhandle->size ++;
return 0;
}
/* CVectorGetElement -- get a copy of an element from a generic vector */
int CVectorGetElement(const CVectorHandle vectorhandle, void CVECTOR_FAR * element, const size_t index) {
if (vectorhandle==NULL) { return CVECTOR_BAD_ARGUMENT; }
if (index < vectorhandle->size) {
CVECTOR_MEMMOVE((char *)element,((char *)(vectorhandle->array))+index*vectorhandle->elementsize,
vectorhandle->elementsize);
return 0;
} else {
return CVECTOR_NOT_FOUND;
}
}
/* CVectorGetElementptr -- get a pointer to an element from a generic vector */
int CVectorGetElementptr(const CVectorHandle vectorhandle, void CVECTOR_FAR ** elementptr, const size_t index) {
if (vectorhandle==NULL) { return CVECTOR_BAD_ARGUMENT; }
if (index < vectorhandle->size) {
*elementptr = (void CVECTOR_FAR*)(((char *)(vectorhandle->array))+index*vectorhandle->elementsize);
vectorhandle->flags |= CVECTOR_FLAGS_NO_RELOCATION;
return 0;
} else {
return CVECTOR_NOT_FOUND;
}
}
/* CVectorSetElement -- set a copy of an element into a generic vector */
int CVectorSetElement(const CVectorHandle vectorhandle, const void CVECTOR_FAR * element, const size_t index) {
size_t newcap;
int errorcode;
if (vectorhandle==NULL) { return CVECTOR_BAD_ARGUMENT; }
if (index >= vectorhandle->capacity) {
newcap = index+vectorhandle->capacity+1;
errorcode = CVectorSetCapacity(vectorhandle, newcap);
if (errorcode != 0 ) {
newcap = index*1.2;
if (newcap < index+128) { newcap = index+128; }
errorcode = CVectorSetCapacity(vectorhandle, newcap);
if (errorcode != 0) { return errorcode; }
}
}
if (index < vectorhandle->capacity) {
CVECTOR_MEMMOVE(((char *)(vectorhandle->array))+index*vectorhandle->elementsize,(char *)element,
vectorhandle->elementsize);
if (index >= vectorhandle->size) { vectorhandle->size = index+1; }
return 0;
} else {
return CVECTOR_NOT_FOUND;
}
}
/* CVectorRemoveElement -- remove an element from a generic vector */
/* keeps elements 0 -- index-1, discards element index
moves elements index+1 through vectorhandle->size-1
into element index through vectorhandle->size-2
i.e. moves characters (index+1)*(vectorhandle->elementsize)
through (vectorhandle->size)*(vectorhandle->elementsize)-1
to index*(vectorhandle->elementsize)
*/
int CVectorRemoveElement(const CVectorHandle vectorhandle, const size_t index) {
if (vectorhandle==NULL) { return CVECTOR_BAD_ARGUMENT; }
if (vectorhandle->flags&CVECTOR_FLAGS_NO_RELOCATION) { return CVECTOR_NO_RELOCATION; }
if (index >= vectorhandle->size) { return CVECTOR_NOT_FOUND; }
if (index == vectorhandle->size-1) {
vectorhandle->size--;
return 0;
}
CVECTOR_MEMMOVE((char *)vectorhandle->array+index*(vectorhandle->elementsize),
(char *)vectorhandle->array+(index+1)*(vectorhandle->elementsize),
(vectorhandle->size-1-index)*(vectorhandle->elementsize));
vectorhandle->size--;
return 0;
}
/* CVectorClear -- clear a generic vector */
int CVectorClear(const CVectorHandle vectorhandle) {
if (vectorhandle==NULL) { return CVECTOR_BAD_ARGUMENT; }
if (vectorhandle->flags & CVECTOR_FLAGS_NO_RESIZE) { return CVECTOR_NO_RESIZE; }
vectorhandle->size = 0;
return 0;
}
/* CVectorFree -- remove a generic vector */
int CVectorFree(CVectorHandle CVECTOR_FAR * vectorhandle) {
if (vectorhandle==NULL) { return CVECTOR_BAD_ARGUMENT; }
if (*vectorhandle) {
if ((*vectorhandle)->flags & CVECTOR_FLAGS_NO_RESIZE) { return CVECTOR_NO_RESIZE; }
if ((*vectorhandle)->flags & CVECTOR_FLAGS_NO_RELOCATION) { return CVECTOR_NO_RELOCATION; }
if ((*vectorhandle)->array) {
CVECTOR_FREE((*vectorhandle)->array);
}
CVECTOR_FREE(*vectorhandle);
}
*vectorhandle = 0;
return 0;
}
/* CVectorGetCapacity - function to return the CVector capacity */
int CVectorGetCapacity(const CVectorHandle vectorhandle, size_t CVECTOR_FAR * capacity) {
if ((vectorhandle==NULL)||!(capacity)) { return CVECTOR_BAD_ARGUMENT; }
*capacity = vectorhandle->capacity;
return 0;
}
/* CVectorGetSize - function to return the CVector size */
int CVectorGetSize(const CVectorHandle vectorhandle, size_t CVECTOR_FAR * size) {
if ((vectorhandle==NULL)||!(size)) { return CVECTOR_BAD_ARGUMENT; }
*size = vectorhandle->size;
return 0;
}
/* CVectorGetFlags - function to return the CVector flags */
int CVectorGetFlags(const CVectorHandle vectorhandle, unsigned int CVECTOR_FAR * flags) {
if ((vectorhandle==NULL)||!(flags)) { return CVECTOR_BAD_ARGUMENT; }
*flags = vectorhandle->flags;
return 0;
}
/* CVectorSetCapacity - function to set the CVector capacity */
int CVectorSetCapacity(const CVectorHandle vectorhandle, const size_t capacity) {
void CVECTOR_FAR * temparray;
if ((vectorhandle==NULL) || capacity < vectorhandle->size) { return CVECTOR_BAD_ARGUMENT; }
if (capacity == vectorhandle->capacity) { return 0; }
if (vectorhandle->flags&CVECTOR_FLAGS_NO_RELOCATION) { return CVECTOR_NO_RELOCATION; }
if (capacity) {
temparray = CVECTOR_MALLOC(capacity*vectorhandle->elementsize);
if (!temparray) { return CVECTOR_MALLOC_FAILED; }
if (vectorhandle->size) {
CVECTOR_MEMMOVE((char *)temparray, (char *)vectorhandle->array, vectorhandle->size*vectorhandle->elementsize);
}
CVECTOR_FREE(vectorhandle->array);
} else {
temparray = NULL;
}
vectorhandle->array = temparray;
vectorhandle->capacity = capacity;
return 0;
}
/* CVectorSetSize - function to set the CVector size */
int CVectorSetSize(const CVectorHandle vectorhandle, const size_t size) {
int errorcode;
if ((vectorhandle==NULL) ) { return CVECTOR_BAD_ARGUMENT; }
if (size == vectorhandle->size) { return 0; }
if ((vectorhandle->flags & CVECTOR_FLAGS_NO_RESIZE)) { return CVECTOR_NO_RESIZE; }
if ( size > vectorhandle->capacity ) {
if ((vectorhandle->flags & CVECTOR_FLAGS_NO_RELOCATION) ) { return CVECTOR_NO_RELOCATION; }
errorcode = CVectorSetCapacity(vectorhandle,size);
if (errorcode != 0) { return errorcode; }
}
if ( size <= vectorhandle->capacity ) {
if (size > vectorhandle->size) {
CVECTOR_MEMSET(((char *)vectorhandle->array)+(vectorhandle->size)*(vectorhandle->elementsize),
0, (vectorhandle->size-size)*(vectorhandle->elementsize));
}
vectorhandle->size = size;
}
return 0;
}
/* CVectorSetFags - function to set the CVector flags */
int CVectorSetFlags(const CVectorHandle vectorhandle, const unsigned int flags) {
if ((vectorhandle==NULL) ) { return CVECTOR_BAD_ARGUMENT; }
vectorhandle->flags = flags;
return 0;
}
#ifdef __cplusplus
}
#endif