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comparison: src/utils.c

src/utils.c

changeset 390
d345541018fa
parent 349
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equal deleted inserted replaced
389:92e482410453 390:d345541018fa
1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2017 Mike Becker, Olaf Wintermann All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "ucx/utils.h"
30
31 #include <math.h>
32 #include <stdio.h>
33 #include <limits.h>
34 #include <errno.h>
35
36 /* COPY FUCNTIONS */
37 void* ucx_strcpy(const void* s, void* data) {
38 const char *str = (const char*) s;
39 size_t n = 1+strlen(str);
40 char *cpy = (char*) malloc(n);
41 memcpy(cpy, str, n);
42 return cpy;
43 }
44
45 void* ucx_memcpy(const void* m, void* n) {
46 size_t k = *((size_t*)n);
47 void *cpy = malloc(k);
48 memcpy(cpy, m, k);
49 return cpy;
50 }
51
52 size_t ucx_stream_bncopy(void *src, void *dest, read_func readfnc,
53 write_func writefnc, char* buf, size_t bufsize, size_t n) {
54 if(n == 0 || bufsize == 0) {
55 return 0;
56 }
57
58 char *lbuf;
59 size_t ncp = 0;
60
61 if(buf) {
62 lbuf = buf;
63 } else {
64 lbuf = (char*)malloc(bufsize);
65 if(lbuf == NULL) {
66 return 0;
67 }
68 }
69
70 size_t r;
71 size_t rn = bufsize > n ? n : bufsize;
72 while((r = readfnc(lbuf, 1, rn, src)) != 0) {
73 r = writefnc(lbuf, 1, r, dest);
74 ncp += r;
75 n -= r;
76 rn = bufsize > n ? n : bufsize;
77 if(r == 0 || n == 0) {
78 break;
79 }
80 }
81
82 if (lbuf != buf) {
83 free(lbuf);
84 }
85
86 return ncp;
87 }
88
89 /* COMPARE FUNCTIONS */
90
91 int ucx_cmp_str(const void *s1, const void *s2, void *data) {
92 return strcmp((const char*)s1, (const char*)s2);
93 }
94
95 int ucx_cmp_strn(const void *s1, const void *s2, void *n) {
96 return strncmp((const char*)s1, (const char*)s2, *((size_t*) n));
97 }
98
99 int ucx_cmp_sstr(const void *s1, const void *s2, void *data) {
100 sstr_t a = *(const sstr_t*) s1;
101 sstr_t b = *(const sstr_t*) s2;
102 return sstrcmp(a, b);
103 }
104
105 int ucx_cmp_int(const void *i1, const void *i2, void *data) {
106 int a = *((const int*) i1);
107 int b = *((const int*) i2);
108 if (a == b) {
109 return 0;
110 } else {
111 return a < b ? -1 : 1;
112 }
113 }
114
115 int ucx_cmp_longint(const void *i1, const void *i2, void *data) {
116 long int a = *((const long int*) i1);
117 long int b = *((const long int*) i2);
118 if (a == b) {
119 return 0;
120 } else {
121 return a < b ? -1 : 1;
122 }
123 }
124
125 int ucx_cmp_longlong(const void *i1, const void *i2, void *data) {
126 long long a = *((const long long*) i1);
127 long long b = *((const long long*) i2);
128 if (a == b) {
129 return 0;
130 } else {
131 return a < b ? -1 : 1;
132 }
133 }
134
135 int ucx_cmp_int16(const void *i1, const void *i2, void *data) {
136 int16_t a = *((const int16_t*) i1);
137 int16_t b = *((const int16_t*) i2);
138 if (a == b) {
139 return 0;
140 } else {
141 return a < b ? -1 : 1;
142 }
143 }
144
145 int ucx_cmp_int32(const void *i1, const void *i2, void *data) {
146 int32_t a = *((const int32_t*) i1);
147 int32_t b = *((const int32_t*) i2);
148 if (a == b) {
149 return 0;
150 } else {
151 return a < b ? -1 : 1;
152 }
153 }
154
155 int ucx_cmp_int64(const void *i1, const void *i2, void *data) {
156 int64_t a = *((const int64_t*) i1);
157 int64_t b = *((const int64_t*) i2);
158 if (a == b) {
159 return 0;
160 } else {
161 return a < b ? -1 : 1;
162 }
163 }
164
165 int ucx_cmp_uint(const void *i1, const void *i2, void *data) {
166 unsigned int a = *((const unsigned int*) i1);
167 unsigned int b = *((const unsigned int*) i2);
168 if (a == b) {
169 return 0;
170 } else {
171 return a < b ? -1 : 1;
172 }
173 }
174
175 int ucx_cmp_ulongint(const void *i1, const void *i2, void *data) {
176 unsigned long int a = *((const unsigned long int*) i1);
177 unsigned long int b = *((const unsigned long int*) i2);
178 if (a == b) {
179 return 0;
180 } else {
181 return a < b ? -1 : 1;
182 }
183 }
184
185 int ucx_cmp_ulonglong(const void *i1, const void *i2, void *data) {
186 unsigned long long a = *((const unsigned long long*) i1);
187 unsigned long long b = *((const unsigned long long*) i2);
188 if (a == b) {
189 return 0;
190 } else {
191 return a < b ? -1 : 1;
192 }
193 }
194
195 int ucx_cmp_uint16(const void *i1, const void *i2, void *data) {
196 uint16_t a = *((const uint16_t*) i1);
197 uint16_t b = *((const uint16_t*) i2);
198 if (a == b) {
199 return 0;
200 } else {
201 return a < b ? -1 : 1;
202 }
203 }
204
205 int ucx_cmp_uint32(const void *i1, const void *i2, void *data) {
206 uint32_t a = *((const uint32_t*) i1);
207 uint32_t b = *((const uint32_t*) i2);
208 if (a == b) {
209 return 0;
210 } else {
211 return a < b ? -1 : 1;
212 }
213 }
214
215 int ucx_cmp_uint64(const void *i1, const void *i2, void *data) {
216 uint64_t a = *((const uint64_t*) i1);
217 uint64_t b = *((const uint64_t*) i2);
218 if (a == b) {
219 return 0;
220 } else {
221 return a < b ? -1 : 1;
222 }
223 }
224
225 intmax_t ucx_dist_int(const void *i1, const void *i2, void *data) {
226 intmax_t a = *((const int*) i1);
227 intmax_t b = *((const int*) i2);
228 return a - b;
229 }
230
231 intmax_t ucx_dist_longint(const void *i1, const void *i2, void *data) {
232 intmax_t a = *((const long int*) i1);
233 intmax_t b = *((const long int*) i2);
234 return a - b;
235 }
236
237 intmax_t ucx_dist_longlong(const void *i1, const void *i2, void *data) {
238 intmax_t a = *((const long long*) i1);
239 intmax_t b = *((const long long*) i2);
240 return a - b;
241 }
242
243 intmax_t ucx_dist_int16(const void *i1, const void *i2, void *data) {
244 intmax_t a = *((const int16_t*) i1);
245 intmax_t b = *((const int16_t*) i2);
246 return a - b;
247 }
248
249 intmax_t ucx_dist_int32(const void *i1, const void *i2, void *data) {
250 intmax_t a = *((const int32_t*) i1);
251 intmax_t b = *((const int32_t*) i2);
252 return a - b;
253 }
254
255 intmax_t ucx_dist_int64(const void *i1, const void *i2, void *data) {
256 intmax_t a = *((const int64_t*) i1);
257 intmax_t b = *((const int64_t*) i2);
258 return a - b;
259 }
260
261 intmax_t ucx_dist_uint(const void *i1, const void *i2, void *data) {
262 uintmax_t a = *((const unsigned int*) i1);
263 uintmax_t b = *((const unsigned int*) i2);
264 return a > b ? (intmax_t)(a - b) : -(intmax_t)(b - a);
265 }
266
267 intmax_t ucx_dist_ulongint(const void *i1, const void *i2, void *data) {
268 uintmax_t a = *((const unsigned long int*) i1);
269 uintmax_t b = *((const unsigned long int*) i2);
270 return a > b ? (intmax_t)(a - b) : -(intmax_t)(b - a);
271 }
272
273 intmax_t ucx_dist_ulonglong(const void *i1, const void *i2, void *data) {
274 uintmax_t a = *((const unsigned long long*) i1);
275 uintmax_t b = *((const unsigned long long*) i2);
276 return a > b ? (intmax_t)(a - b) : -(intmax_t)(b - a);
277 }
278
279 intmax_t ucx_dist_uint16(const void *i1, const void *i2, void *data) {
280 uintmax_t a = *((const uint16_t*) i1);
281 uintmax_t b = *((const uint16_t*) i2);
282 return a > b ? (intmax_t)(a - b) : -(intmax_t)(b - a);
283 }
284
285 intmax_t ucx_dist_uint32(const void *i1, const void *i2, void *data) {
286 uintmax_t a = *((const uint32_t*) i1);
287 uintmax_t b = *((const uint32_t*) i2);
288 return a > b ? (intmax_t)(a - b) : -(intmax_t)(b - a);
289 }
290
291 intmax_t ucx_dist_uint64(const void *i1, const void *i2, void *data) {
292 uintmax_t a = *((const uint64_t*) i1);
293 uintmax_t b = *((const uint64_t*) i2);
294 return a > b ? (intmax_t)(a - b) : -(intmax_t)(b - a);
295 }
296
297 int ucx_cmp_float(const void *f1, const void *f2, void *epsilon) {
298 float a = *((const float*) f1);
299 float b = *((const float*) f2);
300 float e = !epsilon ? 1e-6f : *((float*)epsilon);
301 if (fabsf(a - b) < e) {
302 return 0;
303 } else {
304 return a < b ? -1 : 1;
305 }
306 }
307
308 int ucx_cmp_double(const void *d1, const void *d2, void *epsilon) {
309 double a = *((const double*) d1);
310 double b = *((const double*) d2);
311 double e = !epsilon ? 1e-14 : *((double*)epsilon);
312 if (fabs(a - b) < e) {
313 return 0;
314 } else {
315 return a < b ? -1 : 1;
316 }
317 }
318
319 int ucx_cmp_ptr(const void *ptr1, const void *ptr2, void *data) {
320 const intptr_t p1 = (const intptr_t) ptr1;
321 const intptr_t p2 = (const intptr_t) ptr2;
322 if (p1 == p2) {
323 return 0;
324 } else {
325 return p1 < p2 ? -1 : 1;
326 }
327 }
328
329 int ucx_cmp_mem(const void *ptr1, const void *ptr2, void *n) {
330 return memcmp(ptr1, ptr2, *((size_t*)n));
331 }
332
333 /* PRINTF FUNCTIONS */
334
335 #ifdef va_copy
336 #define UCX_PRINTF_BUFSIZE 256
337 #else
338 #pragma message("WARNING: C99 va_copy macro not supported by this platform" \
339 " - limiting ucx_*printf to 2 KiB")
340 #define UCX_PRINTF_BUFSIZE 0x800
341 #endif
342
343 int ucx_fprintf(void *stream, write_func wfc, const char *fmt, ...) {
344 int ret;
345 va_list ap;
346 va_start(ap, fmt);
347 ret = ucx_vfprintf(stream, wfc, fmt, ap);
348 va_end(ap);
349 return ret;
350 }
351
352 int ucx_vfprintf(void *stream, write_func wfc, const char *fmt, va_list ap) {
353 char buf[UCX_PRINTF_BUFSIZE];
354 #ifdef va_copy
355 va_list ap2;
356 va_copy(ap2, ap);
357 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
358 if (ret < 0) {
359 return ret;
360 } else if (ret < UCX_PRINTF_BUFSIZE) {
361 return (int)wfc(buf, 1, ret, stream);
362 } else {
363 if (ret == INT_MAX) {
364 errno = ENOMEM;
365 return -1;
366 }
367
368 int len = ret + 1;
369 char *newbuf = (char*)malloc(len);
370 if (!newbuf) {
371 return -1;
372 }
373
374 ret = vsnprintf(newbuf, len, fmt, ap2);
375 if (ret > 0) {
376 ret = (int)wfc(newbuf, 1, ret, stream);
377 }
378 free(newbuf);
379 }
380 return ret;
381 #else
382 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
383 if (ret < 0) {
384 return ret;
385 } else if (ret < UCX_PRINTF_BUFSIZE) {
386 return (int)wfc(buf, 1, ret, stream);
387 } else {
388 errno = ENOMEM;
389 return -1;
390 }
391 #endif
392 }
393
394 sstr_t ucx_asprintf(UcxAllocator *allocator, const char *fmt, ...) {
395 va_list ap;
396 sstr_t ret;
397 va_start(ap, fmt);
398 ret = ucx_vasprintf(allocator, fmt, ap);
399 va_end(ap);
400 return ret;
401 }
402
403 sstr_t ucx_vasprintf(UcxAllocator *a, const char *fmt, va_list ap) {
404 sstr_t s;
405 s.ptr = NULL;
406 s.length = 0;
407 char buf[UCX_PRINTF_BUFSIZE];
408 #ifdef va_copy
409 va_list ap2;
410 va_copy(ap2, ap);
411 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
412 if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) {
413 s.ptr = (char*)almalloc(a, ret + 1);
414 if (s.ptr) {
415 s.length = (size_t)ret;
416 memcpy(s.ptr, buf, ret);
417 s.ptr[s.length] = '\0';
418 }
419 } else if (ret == INT_MAX) {
420 errno = ENOMEM;
421 } else {
422 int len = ret + 1;
423 s.ptr = (char*)almalloc(a, len);
424 if (s.ptr) {
425 ret = vsnprintf(s.ptr, len, fmt, ap2);
426 if (ret < 0) {
427 free(s.ptr);
428 s.ptr = NULL;
429 } else {
430 s.length = (size_t)ret;
431 }
432 }
433 }
434 #else
435 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
436 if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) {
437 s.ptr = (char*)almalloc(a, ret + 1);
438 if (s.ptr) {
439 s.length = (size_t)ret;
440 memcpy(s.ptr, buf, ret);
441 s.ptr[s.length] = '\0';
442 }
443 } else {
444 errno = ENOMEM;
445 }
446 #endif
447 return s;
448 }

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