src/utils.c@b7753273f0fd
src/utils.c
Mon, 14 May 2018 18:23:35 +0200
- author
- Mike Becker <universe@uap-core.de>
- date
- Mon, 14 May 2018 18:23:35 +0200
- changeset 313
- b7753273f0fd
- parent 312
- e1e3b768ae8b
- child 314
- 5d28dc8f0765
- permissions
- -rw-r--r--
renames ucx_doublecmp() and ucx_floatcmp() to ucx_cmp_double() and ucx_cmp_float()
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 */
29 #include "ucx/utils.h"
31 #include <math.h>
32 #include <stdio.h>
33 #include <limits.h>
34 #include <errno.h>
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 }
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 }
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 }
58 char *lbuf;
59 size_t ncp = 0;
61 if(buf) {
62 lbuf = buf;
63 } else {
64 lbuf = (char*)malloc(bufsize);
65 if(lbuf == NULL) {
66 return 0;
67 }
68 }
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 }
82 if (lbuf != buf) {
83 free(lbuf);
84 }
86 return ncp;
87 }
89 /* COMPARE FUNCTIONS */
91 int ucx_cmp_str(const void *s1, const void *s2, void *data) {
92 return strcmp((const char*)s1, (const char*)s2);
93 }
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 }
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 }
105 int ucx_intcmp(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 }
115 int ucx_longintcmp(const void *i1, const void *i2, void *data) {
116 int a = *((const long int*) i1);
117 int b = *((const long int*) i2);
118 if (a == b) {
119 return 0;
120 } else {
121 return a < b ? -1 : 1;
122 }
123 }
125 intmax_t ucx_intdist(const void *i1, const void *i2, void *data) {
126 intmax_t a = *((const int*) i1);
127 intmax_t b = *((const int*) i2);
128 return a - b;
129 }
131 intmax_t ucx_longintdist(const void *i1, const void *i2, void *data) {
132 intmax_t a = *((const long int*) i1);
133 intmax_t b = *((const long int*) i2);
134 return a - b;
135 }
137 int ucx_cmp_float(const void *f1, const void *f2, void *epsilon) {
138 float a = *((const float*) f1);
139 float b = *((const float*) f2);
140 float e = !epsilon ? 1e-6f : *((float*)epsilon);
141 if (fabsf(a - b) < e) {
142 return 0;
143 } else {
144 return a < b ? -1 : 1;
145 }
146 }
148 int ucx_cmp_double(const void *d1, const void *d2, void *epsilon) {
149 double a = *((const double*) d1);
150 double b = *((const double*) d2);
151 double e = !epsilon ? 1e-14 : *((double*)epsilon);
152 if (fabs(a - b) < e) {
153 return 0;
154 } else {
155 return a < b ? -1 : 1;
156 }
157 }
159 int ucx_cmp_ptr(const void *ptr1, const void *ptr2, void *data) {
160 const intptr_t p1 = (const intptr_t) ptr1;
161 const intptr_t p2 = (const intptr_t) ptr2;
162 if (p1 == p2) {
163 return 0;
164 } else {
165 return p1 < p2 ? -1 : 1;
166 }
167 }
169 int ucx_cmp_mem(const void *ptr1, const void *ptr2, void *n) {
170 return memcmp(ptr1, ptr2, *((size_t*)n));
171 }
173 /* PRINTF FUNCTIONS */
175 #ifdef va_copy
176 #define UCX_PRINTF_BUFSIZE 256
177 #else
178 #pragma message("WARNING: C99 va_copy macro not supported by this platform" \
179 " - limiting ucx_*printf to 2 KiB")
180 #define UCX_PRINTF_BUFSIZE 0x800
181 #endif
183 int ucx_fprintf(void *stream, write_func wfc, const char *fmt, ...) {
184 int ret;
185 va_list ap;
186 va_start(ap, fmt);
187 ret = ucx_vfprintf(stream, wfc, fmt, ap);
188 va_end(ap);
189 return ret;
190 }
192 int ucx_vfprintf(void *stream, write_func wfc, const char *fmt, va_list ap) {
193 char buf[UCX_PRINTF_BUFSIZE];
194 #ifdef va_copy
195 va_list ap2;
196 va_copy(ap2, ap);
197 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
198 if (ret < 0) {
199 return ret;
200 } else if (ret < UCX_PRINTF_BUFSIZE) {
201 return (int)wfc(buf, 1, ret, stream);
202 } else {
203 if (ret == INT_MAX) {
204 errno = ENOMEM;
205 return -1;
206 }
208 int len = ret + 1;
209 char *newbuf = (char*)malloc(len);
210 if (!newbuf) {
211 return -1;
212 }
214 ret = vsnprintf(newbuf, len, fmt, ap2);
215 if (ret > 0) {
216 ret = (int)wfc(newbuf, 1, ret, stream);
217 }
218 free(newbuf);
219 }
220 return ret;
221 #else
222 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
223 if (ret < 0) {
224 return ret;
225 } else if (ret < UCX_PRINTF_BUFSIZE) {
226 return (int)wfc(buf, 1, ret, stream);
227 } else {
228 errno = ENOMEM;
229 return -1;
230 }
231 #endif
232 }
234 sstr_t ucx_asprintf(UcxAllocator *allocator, const char *fmt, ...) {
235 va_list ap;
236 sstr_t ret;
237 va_start(ap, fmt);
238 ret = ucx_vasprintf(allocator, fmt, ap);
239 va_end(ap);
240 return ret;
241 }
243 sstr_t ucx_vasprintf(UcxAllocator *a, const char *fmt, va_list ap) {
244 sstr_t s;
245 s.ptr = NULL;
246 s.length = 0;
247 char buf[UCX_PRINTF_BUFSIZE];
248 #ifdef va_copy
249 va_list ap2;
250 va_copy(ap2, ap);
251 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
252 if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) {
253 s.ptr = (char*)almalloc(a, ret + 1);
254 if (s.ptr) {
255 s.length = (size_t)ret;
256 memcpy(s.ptr, buf, ret);
257 s.ptr[s.length] = '\0';
258 }
259 } else if (ret == INT_MAX) {
260 errno = ENOMEM;
261 } else {
262 int len = ret + 1;
263 s.ptr = (char*)almalloc(a, len);
264 if (s.ptr) {
265 ret = vsnprintf(s.ptr, len, fmt, ap2);
266 if (ret < 0) {
267 free(s.ptr);
268 s.ptr = NULL;
269 } else {
270 s.length = (size_t)ret;
271 }
272 }
273 }
274 #else
275 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
276 if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) {
277 s.ptr = (char*)almalloc(a, ret + 1);
278 if (s.ptr) {
279 s.length = (size_t)ret;
280 memcpy(s.ptr, buf, ret);
281 s.ptr[s.length] = '\0';
282 }
283 } else {
284 errno = ENOMEM;
285 }
286 #endif
287 return s;
288 }
