comparison: ucx/utils.c
ucx/utils.c
- changeset 0
- 1f419bd32da1
- child 124
- 80609f9675f1
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| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2013 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 "utils.h" | |
| 30 #include <math.h> | |
| 31 #include <stdio.h> | |
| 32 #include <limits.h> | |
| 33 #include <errno.h> | |
| 34 | |
| 35 /* COPY FUCNTIONS */ | |
| 36 void* ucx_strcpy(void* s, void* data) { | |
| 37 char *str = (char*) s; | |
| 38 size_t n = 1+strlen(str); | |
| 39 char *cpy = (char*) malloc(n); | |
| 40 memcpy(cpy, str, n); | |
| 41 return cpy; | |
| 42 } | |
| 43 | |
| 44 void* ucx_memcpy(void* m, void* n) { | |
| 45 size_t k = *((size_t*)n); | |
| 46 void *cpy = malloc(k); | |
| 47 memcpy(cpy, m, k); | |
| 48 return cpy; | |
| 49 } | |
| 50 | |
| 51 size_t ucx_stream_copy(void *src, void *dest, read_func readfnc, | |
| 52 write_func writefnc, char* buf, size_t bufsize, size_t n) { | |
| 53 if(n == 0 || bufsize == 0) { | |
| 54 return 0; | |
| 55 } | |
| 56 | |
| 57 size_t ncp = 0; | |
| 58 if (!buf) { | |
| 59 buf = (char*)malloc(bufsize); | |
| 60 if(buf == NULL) { | |
| 61 return 0; | |
| 62 } | |
| 63 } | |
| 64 | |
| 65 size_t r; | |
| 66 size_t rn = bufsize > n ? n : bufsize; | |
| 67 while((r = readfnc(buf, 1, rn, src)) != 0) { | |
| 68 r = writefnc(buf, 1, r, dest); | |
| 69 ncp += r; | |
| 70 n -= r; | |
| 71 rn = bufsize > n ? n : bufsize; | |
| 72 if(r == 0 || n == 0) { | |
| 73 break; | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 free(buf); | |
| 78 return ncp; | |
| 79 } | |
| 80 | |
| 81 /* COMPARE FUNCTIONS */ | |
| 82 | |
| 83 int ucx_strcmp(void *s1, void *s2, void *data) { | |
| 84 return strcmp((char*)s1, (char*)s2); | |
| 85 } | |
| 86 | |
| 87 int ucx_strncmp(void *s1, void *s2, void *n) { | |
| 88 return strncmp((char*)s1, (char*)s2, *((size_t*) n)); | |
| 89 } | |
| 90 | |
| 91 int ucx_intcmp(void *i1, void *i2, void *data) { | |
| 92 int a = *((int*) i1); | |
| 93 int b = *((int*) i2); | |
| 94 if (a == b) { | |
| 95 return 0; | |
| 96 } else { | |
| 97 return a < b ? -1 : 1; | |
| 98 } | |
| 99 } | |
| 100 | |
| 101 int ucx_floatcmp(void *f1, void *f2, void *epsilon) { | |
| 102 float a = *((float*) f1); | |
| 103 float b = *((float*) f2); | |
| 104 float e = !epsilon ? 1e-6f : *((float*)epsilon); | |
| 105 if (fabsf(a - b) < e) { | |
| 106 return 0; | |
| 107 } else { | |
| 108 return a < b ? -1 : 1; | |
| 109 } | |
| 110 } | |
| 111 | |
| 112 int ucx_doublecmp(void *d1, void *d2, void *epsilon) { | |
| 113 double a = *((float*) d1); | |
| 114 double b = *((float*) d2); | |
| 115 double e = !epsilon ? 1e-14 : *((double*)epsilon); | |
| 116 if (fabs(a - b) < e) { | |
| 117 return 0; | |
| 118 } else { | |
| 119 return a < b ? -1 : 1; | |
| 120 } | |
| 121 } | |
| 122 | |
| 123 int ucx_ptrcmp(void *ptr1, void *ptr2, void *data) { | |
| 124 if (ptr1 == ptr2) { | |
| 125 return 0; | |
| 126 } else { | |
| 127 return ptr1 < ptr2 ? -1 : 1; | |
| 128 } | |
| 129 } | |
| 130 | |
| 131 int ucx_memcmp(void *ptr1, void *ptr2, void *n) { | |
| 132 return memcmp(ptr1, ptr2, *((size_t*)n)); | |
| 133 } | |
| 134 | |
| 135 /* PRINTF FUNCTIONS */ | |
| 136 | |
| 137 #ifdef va_copy | |
| 138 #define UCX_PRINTF_BUFSIZE 256 | |
| 139 #else | |
| 140 #pragma message("WARNING: C99 va_copy macro not supported by this platform" \ | |
| 141 " - limiting ucx_*printf to 2 KiB") | |
| 142 #define UCX_PRINTF_BUFSIZE 0x800 | |
| 143 #endif | |
| 144 | |
| 145 int ucx_fprintf(void *stream, write_func wfc, const char *fmt, ...) { | |
| 146 int ret; | |
| 147 va_list ap; | |
| 148 va_start(ap, fmt); | |
| 149 ret = ucx_vfprintf(stream, wfc, fmt, ap); | |
| 150 va_end(ap); | |
| 151 return ret; | |
| 152 } | |
| 153 | |
| 154 int ucx_vfprintf(void *stream, write_func wfc, const char *fmt, va_list ap) { | |
| 155 char buf[UCX_PRINTF_BUFSIZE]; | |
| 156 #ifdef va_copy | |
| 157 va_list ap2; | |
| 158 va_copy(ap2, ap); | |
| 159 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap); | |
| 160 if (ret < 0) { | |
| 161 return ret; | |
| 162 } else if (ret < UCX_PRINTF_BUFSIZE) { | |
| 163 return (int)wfc(buf, 1, ret, stream); | |
| 164 } else { | |
| 165 if (ret == INT_MAX) { | |
| 166 errno = ENOMEM; | |
| 167 return -1; | |
| 168 } | |
| 169 | |
| 170 int len = ret + 1; | |
| 171 char *newbuf = (char*)malloc(len); | |
| 172 if (!newbuf) { | |
| 173 return -1; | |
| 174 } | |
| 175 | |
| 176 ret = vsnprintf(newbuf, len, fmt, ap2); | |
| 177 if (ret > 0) { | |
| 178 ret = (int)wfc(newbuf, 1, ret, stream); | |
| 179 } | |
| 180 free(newbuf); | |
| 181 } | |
| 182 return ret; | |
| 183 #else | |
| 184 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap); | |
| 185 if (ret < 0) { | |
| 186 return ret; | |
| 187 } else if (ret < UCX_PRINTF_BUFSIZE) { | |
| 188 return (int)wfc(buf, 1, ret, stream); | |
| 189 } else { | |
| 190 errno = ENOMEM; | |
| 191 return -1; | |
| 192 } | |
| 193 #endif | |
| 194 } | |
| 195 | |
| 196 sstr_t ucx_asprintf(UcxAllocator *allocator, const char *fmt, ...) { | |
| 197 va_list ap; | |
| 198 sstr_t ret; | |
| 199 va_start(ap, fmt); | |
| 200 ret = ucx_vasprintf(allocator, fmt, ap); | |
| 201 va_end(ap); | |
| 202 return ret; | |
| 203 } | |
| 204 | |
| 205 sstr_t ucx_vasprintf(UcxAllocator *a, const char *fmt, va_list ap) { | |
| 206 sstr_t s; | |
| 207 s.ptr = NULL; | |
| 208 s.length = 0; | |
| 209 char buf[UCX_PRINTF_BUFSIZE]; | |
| 210 #ifdef va_copy | |
| 211 va_list ap2; | |
| 212 va_copy(ap2, ap); | |
| 213 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap); | |
| 214 if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) { | |
| 215 s.ptr = (char*)a->malloc(a->pool, ret + 1); | |
| 216 s.length = (size_t)ret; | |
| 217 memcpy(s.ptr, buf, ret); | |
| 218 s.ptr[s.length] = '\0'; | |
| 219 } else if (ret == INT_MAX) { | |
| 220 errno = ENOMEM; | |
| 221 } else { | |
| 222 int len = ret + 1; | |
| 223 s.ptr = (char*)a->malloc(a->pool, len); | |
| 224 ret = vsnprintf(s.ptr, len, fmt, ap2); | |
| 225 if (ret < 0) { | |
| 226 free(s.ptr); | |
| 227 s.ptr = NULL; | |
| 228 } else { | |
| 229 s.length = (size_t)ret; | |
| 230 } | |
| 231 } | |
| 232 #else | |
| 233 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap); | |
| 234 if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) { | |
| 235 s.ptr = (char*)a->malloc(a->pool, ret + 1); | |
| 236 s.length = (size_t)ret; | |
| 237 memcpy(s.ptr, buf, ret); | |
| 238 s.ptr[s.length] = '\0'; | |
| 239 } else { | |
| 240 errno = ENOMEM; | |
| 241 } | |
| 242 #endif | |
| 243 return s; | |
| 244 } |
