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comparison: ucx/utils.c

ucx/utils.c

changeset 747
efbd59642577
parent 505
481802342fdf
child 776
96555c0ed875
equal deleted inserted replaced
746:a569148841ff 747:efbd59642577
1 /* 1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 * 3 *
4 * Copyright 2017 Mike Becker, Olaf Wintermann All rights reserved. 4 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
5 * 5 *
6 * Redistribution and use in source and binary forms, with or without 6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met: 7 * modification, are permitted provided that the following conditions are met:
8 * 8 *
9 * 1. Redistributions of source code must retain the above copyright 9 * 1. Redistributions of source code must retain the above copyright
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 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 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE. 26 * POSSIBILITY OF SUCH DAMAGE.
27 */ 27 */
28 28
29 #include "ucx/utils.h" 29 #include "cx/utils.h"
30 30
31 #include <math.h> 31 #define CX_STREAM_BCOPY_BUF_SIZE 8192
32 #include <stdio.h> 32 #define CX_STREAM_COPY_BUF_SIZE 1024
33 #include <limits.h>
34 #include <errno.h>
35 33
36 /* COPY FUCNTIONS */ 34 size_t cx_stream_bncopy(
37 void* ucx_strcpy(const void* s, void* data) { 35 void *src,
38 const char *str = (const char*) s; 36 void *dest,
39 size_t n = 1+strlen(str); 37 cx_read_func rfnc,
40 char *cpy = (char*) malloc(n); 38 cx_write_func wfnc,
41 memcpy(cpy, str, n); 39 char *buf,
42 return cpy; 40 size_t bufsize,
43 } 41 size_t n
44 42 ) {
45 void* ucx_memcpy(const void* m, void* n) { 43 if (n == 0) {
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; 44 return 0;
56 } 45 }
57 46
58 char *lbuf; 47 char *lbuf;
59 size_t ncp = 0; 48 size_t ncp = 0;
60 49
61 if(buf) { 50 if (buf) {
51 if (bufsize == 0) return 0;
62 lbuf = buf; 52 lbuf = buf;
63 } else { 53 } else {
64 lbuf = (char*)malloc(bufsize); 54 if (bufsize == 0) bufsize = CX_STREAM_BCOPY_BUF_SIZE;
65 if(lbuf == NULL) { 55 lbuf = malloc(bufsize);
56 if (lbuf == NULL) {
66 return 0; 57 return 0;
67 } 58 }
68 } 59 }
69 60
70 size_t r; 61 size_t r;
71 size_t rn = bufsize > n ? n : bufsize; 62 size_t rn = bufsize > n ? n : bufsize;
72 while((r = readfnc(lbuf, 1, rn, src)) != 0) { 63 while ((r = rfnc(lbuf, 1, rn, src)) != 0) {
73 r = writefnc(lbuf, 1, r, dest); 64 r = wfnc(lbuf, 1, r, dest);
74 ncp += r; 65 ncp += r;
75 n -= r; 66 n -= r;
76 rn = bufsize > n ? n : bufsize; 67 rn = bufsize > n ? n : bufsize;
77 if(r == 0 || n == 0) { 68 if (r == 0 || n == 0) {
78 break; 69 break;
79 } 70 }
80 } 71 }
81 72
82 if (lbuf != buf) { 73 if (lbuf != buf) {
83 free(lbuf); 74 free(lbuf);
84 } 75 }
85 76
86 return ncp; 77 return ncp;
87 } 78 }
88 79
89 /* COMPARE FUNCTIONS */ 80 size_t cx_stream_ncopy(
90 81 void *src,
91 int ucx_cmp_str(const void *s1, const void *s2, void *data) { 82 void *dest,
92 return strcmp((const char*)s1, (const char*)s2); 83 cx_read_func rfnc,
84 cx_write_func wfnc,
85 size_t n
86 ) {
87 char buf[CX_STREAM_COPY_BUF_SIZE];
88 return cx_stream_bncopy(src, dest, rfnc, wfnc,
89 buf, CX_STREAM_COPY_BUF_SIZE, n);
93 } 90 }
94 91
95 int ucx_cmp_strn(const void *s1, const void *s2, void *n) { 92 #ifndef CX_SZMUL_BUILTIN
96 return strncmp((const char*)s1, (const char*)s2, *((size_t*) n)); 93 #include "szmul.c"
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 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 }
124
125 intmax_t ucx_dist_int(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 }
130
131 intmax_t ucx_dist_longint(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 }
136
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 }
147
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 }
158
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 }
168
169 int ucx_cmp_mem(const void *ptr1, const void *ptr2, void *n) {
170 return memcmp(ptr1, ptr2, *((size_t*)n));
171 }
172
173 /* PRINTF FUNCTIONS */
174
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 94 #endif
182
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 }
191
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 }
207
208 int len = ret + 1;
209 char *newbuf = (char*)malloc(len);
210 if (!newbuf) {
211 return -1;
212 }
213
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 }
233
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 }
242
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 }

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