Azure IoT / azure_c_shared_utility

Azure IoT common library

Dependents:   STM32F746_iothub_client_sample_mqtt f767zi_mqtt iothub_client_sample_amqp iothub_client_sample_http ... more

crt_abstractions.c@6:c55b013dfc2a, 2016-07-01 (annotated)

Committer:
Azure.IoT Build
Date:
Fri Jul 01 10:43:23 2016 -0700
Revision:
6:c55b013dfc2a
Parent:
0:fa2de1b79154
Child:
7:1af47e3a19b6
1.0.10

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Azure.IoT Build 0:fa2de1b79154 1 // Copyright (c) Microsoft. All rights reserved.
Azure.IoT Build 0:fa2de1b79154 2 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
Azure.IoT Build 0:fa2de1b79154 3
Azure.IoT Build 0:fa2de1b79154 4 #define __STDC_WANT_LIB_EXT1__ 1
Azure.IoT Build 0:fa2de1b79154 5
Azure.IoT Build 0:fa2de1b79154 6 #include <stdlib.h>
Azure.IoT Build 0:fa2de1b79154 7 #ifdef _CRTDBG_MAP_ALLOC
Azure.IoT Build 0:fa2de1b79154 8 #include <crtdbg.h>
Azure.IoT Build 0:fa2de1b79154 9 #endif
Azure.IoT Build 0:fa2de1b79154 10 #include "azure_c_shared_utility/gballoc.h"
Azure.IoT Build 0:fa2de1b79154 11
Azure.IoT Build 0:fa2de1b79154 12 #include "azure_c_shared_utility/crt_abstractions.h"
Azure.IoT Build 0:fa2de1b79154 13 #include "errno.h"
Azure.IoT Build 0:fa2de1b79154 14 #include <stddef.h>
Azure.IoT Build 0:fa2de1b79154 15 #include <limits.h>
Azure.IoT Build 0:fa2de1b79154 16
Azure.IoT Build 0:fa2de1b79154 17 #ifdef _MSC_VER
Azure.IoT Build 0:fa2de1b79154 18 #else
Azure.IoT Build 0:fa2de1b79154 19
Azure.IoT Build 0:fa2de1b79154 20 #include <stdarg.h>
Azure.IoT Build 0:fa2de1b79154 21
Azure.IoT Build 0:fa2de1b79154 22 /*Codes_SRS_CRT_ABSTRACTIONS_99_008: [strcat_s shall append the src to dst and terminates the resulting string with a null character.]*/
Azure.IoT Build 0:fa2de1b79154 23 int strcat_s(char* dst, size_t dstSizeInBytes, const char* src)
Azure.IoT Build 0:fa2de1b79154 24 {
Azure.IoT Build 0:fa2de1b79154 25 int result;
Azure.IoT Build 0:fa2de1b79154 26 /*Codes_SRS_CRT_ABSTRACTIONS_99_004: [If dst is NULL or unterminated, the error code returned shall be EINVAL & dst shall not be modified.]*/
Azure.IoT Build 0:fa2de1b79154 27 if (dst == NULL)
Azure.IoT Build 0:fa2de1b79154 28 {
Azure.IoT Build 0:fa2de1b79154 29 result = EINVAL;
Azure.IoT Build 0:fa2de1b79154 30 }
Azure.IoT Build 0:fa2de1b79154 31 /*Codes_SRS_CRT_ABSTRACTIONS_99_005: [If src is NULL, the error code returned shall be EINVAL and dst[0] shall be set to 0.]*/
Azure.IoT Build 0:fa2de1b79154 32 else if (src == NULL)
Azure.IoT Build 0:fa2de1b79154 33 {
Azure.IoT Build 0:fa2de1b79154 34 dst[0] = '\0';
Azure.IoT Build 0:fa2de1b79154 35 result = EINVAL;
Azure.IoT Build 0:fa2de1b79154 36 }
Azure.IoT Build 0:fa2de1b79154 37 else
Azure.IoT Build 0:fa2de1b79154 38 {
Azure.IoT Build 0:fa2de1b79154 39 /*Codes_SRS_CRT_ABSTRACTIONS_99_006: [If the dstSizeInBytes is 0 or smaller than the required size for dst & src, the error code returned shall be ERANGE & dst[0] set to 0.]*/
Azure.IoT Build 0:fa2de1b79154 40 if (dstSizeInBytes == 0)
Azure.IoT Build 0:fa2de1b79154 41 {
Azure.IoT Build 0:fa2de1b79154 42 result = ERANGE;
Azure.IoT Build 0:fa2de1b79154 43 dst[0] = '\0';
Azure.IoT Build 0:fa2de1b79154 44 }
Azure.IoT Build 0:fa2de1b79154 45 else
Azure.IoT Build 0:fa2de1b79154 46 {
Azure.IoT Build 0:fa2de1b79154 47 size_t dstStrLen = 0;
Azure.IoT Build 0:fa2de1b79154 48 #ifdef __STDC_LIB_EXT1__
Azure.IoT Build 0:fa2de1b79154 49 dstStrLen = strnlen_s(dst, dstSizeInBytes);
Azure.IoT Build 0:fa2de1b79154 50 #else
Azure.IoT Build 0:fa2de1b79154 51 size_t i;
Azure.IoT Build 0:fa2de1b79154 52 for(i=0; (i < dstSizeInBytes) && (dst[i]!= '\0'); i++)
Azure.IoT Build 0:fa2de1b79154 53 {
Azure.IoT Build 0:fa2de1b79154 54 }
Azure.IoT Build 0:fa2de1b79154 55 dstStrLen = i;
Azure.IoT Build 0:fa2de1b79154 56 #endif
Azure.IoT Build 0:fa2de1b79154 57 /*Codes_SRS_CRT_ABSTRACTIONS_99_004: [If dst is NULL or unterminated, the error code returned shall be EINVAL & dst shall not be modified.]*/
Azure.IoT Build 0:fa2de1b79154 58 if (dstSizeInBytes == dstStrLen) /* this means the dst string is not terminated*/
Azure.IoT Build 0:fa2de1b79154 59 {
Azure.IoT Build 0:fa2de1b79154 60 result = EINVAL;
Azure.IoT Build 0:fa2de1b79154 61 }
Azure.IoT Build 0:fa2de1b79154 62 else
Azure.IoT Build 0:fa2de1b79154 63 {
Azure.IoT Build 0:fa2de1b79154 64 /*Codes_SRS_CRT_ABSTRACTIONS_99_009: [The initial character of src shall overwrite the terminating null character of dst.]*/
Azure.IoT Build 0:fa2de1b79154 65 (void)strncpy(&dst[dstStrLen], src, dstSizeInBytes - dstStrLen);
Azure.IoT Build 0:fa2de1b79154 66 /*Codes_SRS_CRT_ABSTRACTIONS_99_006: [If the dstSizeInBytes is 0 or smaller than the required size for dst & src, the error code returned shall be ERANGE & dst[0] set to 0.]*/
Azure.IoT Build 0:fa2de1b79154 67 if (dst[dstSizeInBytes-1] != '\0')
Azure.IoT Build 0:fa2de1b79154 68 {
Azure.IoT Build 0:fa2de1b79154 69 dst[0] = '\0';
Azure.IoT Build 0:fa2de1b79154 70 result = ERANGE;
Azure.IoT Build 0:fa2de1b79154 71 }
Azure.IoT Build 0:fa2de1b79154 72 else
Azure.IoT Build 0:fa2de1b79154 73 {
Azure.IoT Build 0:fa2de1b79154 74 /*Codes_SRS_CRT_ABSTRACTIONS_99_003: [strcat_s shall return Zero upon success.]*/
Azure.IoT Build 0:fa2de1b79154 75 result = 0;
Azure.IoT Build 0:fa2de1b79154 76 }
Azure.IoT Build 0:fa2de1b79154 77 }
Azure.IoT Build 0:fa2de1b79154 78 }
Azure.IoT Build 0:fa2de1b79154 79 }
Azure.IoT Build 0:fa2de1b79154 80
Azure.IoT Build 0:fa2de1b79154 81 return result;
Azure.IoT Build 0:fa2de1b79154 82 }
Azure.IoT Build 0:fa2de1b79154 83
Azure.IoT Build 0:fa2de1b79154 84 /*Codes_SRS_CRT_ABSTRACTIONS_99_025: [strncpy_s shall copy the first N characters of src to dst, where N is the lesser of MaxCount and the length of src.]*/
Azure.IoT Build 0:fa2de1b79154 85 int strncpy_s(char* dst, size_t dstSizeInBytes, const char* src, size_t maxCount)
Azure.IoT Build 0:fa2de1b79154 86 {
Azure.IoT Build 0:fa2de1b79154 87 int result;
Azure.IoT Build 0:fa2de1b79154 88 int truncationFlag = 0;
Azure.IoT Build 0:fa2de1b79154 89 /*Codes_SRS_CRT_ABSTRACTIONS_99_020: [If dst is NULL, the error code returned shall be EINVAL and dst shall not be modified.]*/
Azure.IoT Build 0:fa2de1b79154 90 if (dst == NULL)
Azure.IoT Build 0:fa2de1b79154 91 {
Azure.IoT Build 0:fa2de1b79154 92 result = EINVAL;
Azure.IoT Build 0:fa2de1b79154 93 }
Azure.IoT Build 0:fa2de1b79154 94 /*Codes_SRS_CRT_ABSTRACTIONS_99_021: [If src is NULL, the error code returned shall be EINVAL and dst[0] shall be set to 0.]*/
Azure.IoT Build 0:fa2de1b79154 95 else if (src == NULL)
Azure.IoT Build 0:fa2de1b79154 96 {
Azure.IoT Build 0:fa2de1b79154 97 dst[0] = '\0';
Azure.IoT Build 0:fa2de1b79154 98 result = EINVAL;
Azure.IoT Build 0:fa2de1b79154 99 }
Azure.IoT Build 0:fa2de1b79154 100 /*Codes_SRS_CRT_ABSTRACTIONS_99_022: [If the dstSizeInBytes is 0, the error code returned shall be EINVAL and dst shall not be modified.]*/
Azure.IoT Build 0:fa2de1b79154 101 else if (dstSizeInBytes == 0)
Azure.IoT Build 0:fa2de1b79154 102 {
Azure.IoT Build 0:fa2de1b79154 103 result = EINVAL;
Azure.IoT Build 0:fa2de1b79154 104 }
Azure.IoT Build 0:fa2de1b79154 105 else
Azure.IoT Build 0:fa2de1b79154 106 {
Azure.IoT Build 0:fa2de1b79154 107 size_t srcLength = strlen(src);
Azure.IoT Build 0:fa2de1b79154 108 if (maxCount != _TRUNCATE)
Azure.IoT Build 0:fa2de1b79154 109 {
Azure.IoT Build 0:fa2de1b79154 110 /*Codes_SRS_CRT_ABSTRACTIONS_99_041: [If those N characters will fit within dst (whose size is given as dstSizeInBytes) and still leave room for a null terminator, then those characters shall be copied and a terminating null is appended; otherwise, strDest[0] is set to the null character and ERANGE error code returned.]*/
Azure.IoT Build 0:fa2de1b79154 111 if (srcLength > maxCount)
Azure.IoT Build 0:fa2de1b79154 112 {
Azure.IoT Build 0:fa2de1b79154 113 srcLength = maxCount;
Azure.IoT Build 0:fa2de1b79154 114 }
Azure.IoT Build 0:fa2de1b79154 115
Azure.IoT Build 0:fa2de1b79154 116 /*Codes_SRS_CRT_ABSTRACTIONS_99_023: [If dst is not NULL & dstSizeInBytes is smaller than the required size for the src string, the error code returned shall be ERANGE and dst[0] shall be set to 0.]*/
Azure.IoT Build 0:fa2de1b79154 117 if (srcLength + 1 > dstSizeInBytes)
Azure.IoT Build 0:fa2de1b79154 118 {
Azure.IoT Build 0:fa2de1b79154 119 dst[0] = '\0';
Azure.IoT Build 0:fa2de1b79154 120 result = ERANGE;
Azure.IoT Build 0:fa2de1b79154 121 }
Azure.IoT Build 0:fa2de1b79154 122 else
Azure.IoT Build 0:fa2de1b79154 123 {
Azure.IoT Build 0:fa2de1b79154 124 (void)strncpy(dst, src, srcLength);
Azure.IoT Build 0:fa2de1b79154 125 dst[srcLength] = '\0';
Azure.IoT Build 0:fa2de1b79154 126 /*Codes_SRS_CRT_ABSTRACTIONS_99_018: [strncpy_s shall return Zero upon success]*/
Azure.IoT Build 0:fa2de1b79154 127 result = 0;
Azure.IoT Build 0:fa2de1b79154 128 }
Azure.IoT Build 0:fa2de1b79154 129 }
Azure.IoT Build 0:fa2de1b79154 130 /*Codes_SRS_CRT_ABSTRACTIONS_99_026: [If MaxCount is _TRUNCATE (defined as -1), then as much of src as will fit into dst shall be copied while still leaving room for the terminating null to be appended.]*/
Azure.IoT Build 0:fa2de1b79154 131 else
Azure.IoT Build 0:fa2de1b79154 132 {
Azure.IoT Build 0:fa2de1b79154 133 if (srcLength + 1 > dstSizeInBytes )
Azure.IoT Build 0:fa2de1b79154 134 {
Azure.IoT Build 0:fa2de1b79154 135 srcLength = dstSizeInBytes - 1;
Azure.IoT Build 0:fa2de1b79154 136 truncationFlag = 1;
Azure.IoT Build 0:fa2de1b79154 137 }
Azure.IoT Build 0:fa2de1b79154 138 (void)strncpy(dst, src, srcLength);
Azure.IoT Build 0:fa2de1b79154 139 dst[srcLength] = '\0';
Azure.IoT Build 0:fa2de1b79154 140 result = 0;
Azure.IoT Build 0:fa2de1b79154 141 }
Azure.IoT Build 0:fa2de1b79154 142 }
Azure.IoT Build 0:fa2de1b79154 143
Azure.IoT Build 0:fa2de1b79154 144 /*Codes_SRS_CRT_ABSTRACTIONS_99_019: [If truncation occurred as a result of the copy, the error code returned shall be STRUNCATE.]*/
Azure.IoT Build 0:fa2de1b79154 145 if (truncationFlag == 1)
Azure.IoT Build 0:fa2de1b79154 146 {
Azure.IoT Build 0:fa2de1b79154 147 result = STRUNCATE;
Azure.IoT Build 0:fa2de1b79154 148 }
Azure.IoT Build 0:fa2de1b79154 149
Azure.IoT Build 0:fa2de1b79154 150 return result;
Azure.IoT Build 0:fa2de1b79154 151 }
Azure.IoT Build 0:fa2de1b79154 152
Azure.IoT Build 0:fa2de1b79154 153 /* Codes_SRS_CRT_ABSTRACTIONS_99_016: [strcpy_s shall copy the contents in the address of src, including the terminating null character, to the location that's specified by dst.]*/
Azure.IoT Build 0:fa2de1b79154 154 int strcpy_s(char* dst, size_t dstSizeInBytes, const char* src)
Azure.IoT Build 0:fa2de1b79154 155 {
Azure.IoT Build 0:fa2de1b79154 156 int result;
Azure.IoT Build 0:fa2de1b79154 157
Azure.IoT Build 0:fa2de1b79154 158 /* Codes_SRS_CRT_ABSTRACTIONS_99_012: [If dst is NULL, the error code returned shall be EINVAL & dst shall not be modified.]*/
Azure.IoT Build 0:fa2de1b79154 159 if (dst == NULL)
Azure.IoT Build 0:fa2de1b79154 160 {
Azure.IoT Build 0:fa2de1b79154 161 result = EINVAL;
Azure.IoT Build 0:fa2de1b79154 162 }
Azure.IoT Build 0:fa2de1b79154 163 /* Codes_SRS_CRT_ABSTRACTIONS_99_013: [If src is NULL, the error code returned shall be EINVAL and dst[0] shall be set to 0.]*/
Azure.IoT Build 0:fa2de1b79154 164 else if (src == NULL)
Azure.IoT Build 0:fa2de1b79154 165 {
Azure.IoT Build 0:fa2de1b79154 166 dst[0] = '\0';
Azure.IoT Build 0:fa2de1b79154 167 result = EINVAL;
Azure.IoT Build 0:fa2de1b79154 168 }
Azure.IoT Build 0:fa2de1b79154 169 /* Codes_SRS_CRT_ABSTRACTIONS_99_014: [If the dstSizeInBytes is 0 or smaller than the required size for the src string, the error code returned shall be ERANGE & dst[0] set to 0.]*/
Azure.IoT Build 0:fa2de1b79154 170 else if (dstSizeInBytes == 0)
Azure.IoT Build 0:fa2de1b79154 171 {
Azure.IoT Build 0:fa2de1b79154 172 dst[0] = '\0';
Azure.IoT Build 0:fa2de1b79154 173 result = ERANGE;
Azure.IoT Build 0:fa2de1b79154 174 }
Azure.IoT Build 0:fa2de1b79154 175 else
Azure.IoT Build 0:fa2de1b79154 176 {
Azure.IoT Build 0:fa2de1b79154 177 size_t neededBuffer = strlen(src);
Azure.IoT Build 0:fa2de1b79154 178 /* Codes_SRS_CRT_ABSTRACTIONS_99_014: [If the dstSizeInBytes is 0 or smaller than the required size for the src string, the error code returned shall be ERANGE & dst[0] set to 0.]*/
Azure.IoT Build 0:fa2de1b79154 179 if (neededBuffer + 1 > dstSizeInBytes)
Azure.IoT Build 0:fa2de1b79154 180 {
Azure.IoT Build 0:fa2de1b79154 181 dst[0] = '\0';
Azure.IoT Build 0:fa2de1b79154 182 result = ERANGE;
Azure.IoT Build 0:fa2de1b79154 183 }
Azure.IoT Build 0:fa2de1b79154 184 else
Azure.IoT Build 0:fa2de1b79154 185 {
Azure.IoT Build 0:fa2de1b79154 186 memcpy(dst, src, neededBuffer + 1);
Azure.IoT Build 0:fa2de1b79154 187 /*Codes_SRS_CRT_ABSTRACTIONS_99_011: [strcpy_s shall return Zero upon success]*/
Azure.IoT Build 0:fa2de1b79154 188 result = 0;
Azure.IoT Build 0:fa2de1b79154 189 }
Azure.IoT Build 0:fa2de1b79154 190 }
Azure.IoT Build 0:fa2de1b79154 191
Azure.IoT Build 0:fa2de1b79154 192 return result;
Azure.IoT Build 0:fa2de1b79154 193 }
Azure.IoT Build 0:fa2de1b79154 194
Azure.IoT Build 0:fa2de1b79154 195 /*Codes_SRS_CRT_ABSTRACTIONS_99_029: [The sprintf_s function shall format and store series of characters and values in dst. Each argument (if any) is converted and output according to the corresponding Format Specification in the format variable.]*/
Azure.IoT Build 0:fa2de1b79154 196 /*Codes_SRS_CRT_ABSTRACTIONS_99_031: [A null character is appended after the last character written.]*/
Azure.IoT Build 0:fa2de1b79154 197 int sprintf_s(char* dst, size_t dstSizeInBytes, const char* format, ...)
Azure.IoT Build 0:fa2de1b79154 198 {
Azure.IoT Build 0:fa2de1b79154 199 int result;
Azure.IoT Build 0:fa2de1b79154 200 /*Codes_SRS_CRT_ABSTRACTIONS_99_028: [If dst or format is a null pointer, sprintf_s shall return -1 and set errno to EINVAL]*/
Azure.IoT Build 0:fa2de1b79154 201 if ((dst == NULL) ||
Azure.IoT Build 0:fa2de1b79154 202 (format == NULL))
Azure.IoT Build 0:fa2de1b79154 203 {
Azure.IoT Build 0:fa2de1b79154 204 errno = EINVAL;
Azure.IoT Build 0:fa2de1b79154 205 result = -1;
Azure.IoT Build 0:fa2de1b79154 206 }
Azure.IoT Build 0:fa2de1b79154 207 else
Azure.IoT Build 0:fa2de1b79154 208 {
Azure.IoT Build 0:fa2de1b79154 209 /*Codes_SRS_CRT_ABSTRACTIONS_99_033: [sprintf_s shall check the format string for valid formatting characters. If the check fails, the function returns -1.]*/
Azure.IoT Build 0:fa2de1b79154 210
Azure.IoT Build 0:fa2de1b79154 211 #if defined _MSC_VER
Azure.IoT Build 0:fa2de1b79154 212 #error crt_abstractions is not provided for Microsoft Compilers
Azure.IoT Build 0:fa2de1b79154 213 #else
Azure.IoT Build 0:fa2de1b79154 214 /*not Microsoft compiler... */
Azure.IoT Build 0:fa2de1b79154 215 #if defined (__STDC_VERSION__) || (__cplusplus)
Azure.IoT Build 0:fa2de1b79154 216 #if ( \
Azure.IoT Build 0:fa2de1b79154 217 ((__STDC_VERSION__ == 199901L) || (__STDC_VERSION__ == 201000L) || (__STDC_VERSION__ == 201112L)) || \
Azure.IoT Build 0:fa2de1b79154 218 (defined __cplusplus) \
Azure.IoT Build 0:fa2de1b79154 219 )
Azure.IoT Build 0:fa2de1b79154 220 /*C99 compiler*/
Azure.IoT Build 0:fa2de1b79154 221 va_list args;
Azure.IoT Build 0:fa2de1b79154 222 va_start(args, format);
Azure.IoT Build 0:fa2de1b79154 223 /*Codes_SRS_CRT_ABSTRACTIONS_99_027: [sprintf_s shall return the number of characters stored in dst upon success. This number shall not include the terminating null character.]*/
Azure.IoT Build 0:fa2de1b79154 224 result = vsnprintf(dst, dstSizeInBytes, format, args);
Azure.IoT Build 0:fa2de1b79154 225 va_end(args);
Azure.IoT Build 0:fa2de1b79154 226
Azure.IoT Build 0:fa2de1b79154 227 /*C99: Thus, the null-terminated output has been completely written if and only if the returned value is nonnegative and less than n*/
Azure.IoT Build 0:fa2de1b79154 228 if (result < 0)
Azure.IoT Build 0:fa2de1b79154 229 {
Azure.IoT Build 0:fa2de1b79154 230 result = -1;
Azure.IoT Build 0:fa2de1b79154 231 }
Azure.IoT Build 0:fa2de1b79154 232 else if ((size_t)result >= dstSizeInBytes)
Azure.IoT Build 0:fa2de1b79154 233 {
Azure.IoT Build 0:fa2de1b79154 234 /*Codes_SRS_CRT_ABSTRACTIONS_99_034: [If the dst buffer is too small for the text being printed, then dst is set to an empty string and the function shall return -1.]*/
Azure.IoT Build 0:fa2de1b79154 235 dst[0] = '\0';
Azure.IoT Build 0:fa2de1b79154 236 result = -1;
Azure.IoT Build 0:fa2de1b79154 237 }
Azure.IoT Build 0:fa2de1b79154 238 else
Azure.IoT Build 0:fa2de1b79154 239 {
Azure.IoT Build 0:fa2de1b79154 240 /*do nothing, all is fine*/
Azure.IoT Build 0:fa2de1b79154 241 }
Azure.IoT Build 0:fa2de1b79154 242 #else
Azure.IoT Build 0:fa2de1b79154 243 #error STDC_VERSION defined, but of unknown value; unable to sprinf_s, or provide own implementation
Azure.IoT Build 0:fa2de1b79154 244 #endif
Azure.IoT Build 0:fa2de1b79154 245 #else
Azure.IoT Build 0:fa2de1b79154 246 #error for STDC_VERSION undefined (assumed C89), provide own implementation of sprintf_s
Azure.IoT Build 0:fa2de1b79154 247 #endif
Azure.IoT Build 0:fa2de1b79154 248 #endif
Azure.IoT Build 0:fa2de1b79154 249 }
Azure.IoT Build 0:fa2de1b79154 250 return result;
Azure.IoT Build 0:fa2de1b79154 251 }
Azure.IoT Build 0:fa2de1b79154 252 #endif /* _MSC_VER */
Azure.IoT Build 0:fa2de1b79154 253
Azure.IoT Build 0:fa2de1b79154 254 /*Codes_SRS_CRT_ABSTRACTIONS_99_038: [mallocAndstrcpy_s shall allocate memory for destination buffer to fit the string in the source parameter.]*/
Azure.IoT Build 0:fa2de1b79154 255 int mallocAndStrcpy_s(char** destination, const char* source)
Azure.IoT Build 0:fa2de1b79154 256 {
Azure.IoT Build 0:fa2de1b79154 257 int result;
Azure.IoT Build 0:fa2de1b79154 258 /*Codes_SRS_CRT_ABSTRACTIONS_99_036: [destination parameter or source parameter is NULL, the error code returned shall be EINVAL and destination shall not be modified.]*/
Azure.IoT Build 0:fa2de1b79154 259 if ((destination == NULL) || (source == NULL))
Azure.IoT Build 0:fa2de1b79154 260 {
Azure.IoT Build 0:fa2de1b79154 261 /*If strDestination or strSource is a null pointer[...]these functions return EINVAL */
Azure.IoT Build 0:fa2de1b79154 262 result = EINVAL;
Azure.IoT Build 0:fa2de1b79154 263 }
Azure.IoT Build 0:fa2de1b79154 264 else
Azure.IoT Build 0:fa2de1b79154 265 {
Azure.IoT Build 0:fa2de1b79154 266 size_t l = strlen(source);
Azure.IoT Build 6:c55b013dfc2a 267 char* temp = (char*)malloc(l + 1);
Azure.IoT Build 6:c55b013dfc2a 268
Azure.IoT Build 0:fa2de1b79154 269 /*Codes_SRS_CRT_ABSTRACTIONS_99_037: [Upon failure to allocate memory for the destination, the function will return ENOMEM.]*/
Azure.IoT Build 6:c55b013dfc2a 270 if (temp == NULL)
Azure.IoT Build 0:fa2de1b79154 271 {
Azure.IoT Build 0:fa2de1b79154 272 result = ENOMEM;
Azure.IoT Build 0:fa2de1b79154 273 }
Azure.IoT Build 0:fa2de1b79154 274 else
Azure.IoT Build 0:fa2de1b79154 275 {
Azure.IoT Build 6:c55b013dfc2a 276 *destination = temp;
Azure.IoT Build 0:fa2de1b79154 277 /*Codes_SRS_CRT_ABSTRACTIONS_99_039: [mallocAndstrcpy_s shall copy the contents in the address source, including the terminating null character into location specified by the destination pointer after the memory allocation.]*/
Azure.IoT Build 0:fa2de1b79154 278 int temp = strcpy_s(*destination, l + 1, source);
Azure.IoT Build 0:fa2de1b79154 279 if (temp < 0) /*strcpy_s error*/
Azure.IoT Build 0:fa2de1b79154 280 {
Azure.IoT Build 0:fa2de1b79154 281 free(*destination);
Azure.IoT Build 0:fa2de1b79154 282 *destination = NULL;
Azure.IoT Build 0:fa2de1b79154 283 result = temp;
Azure.IoT Build 0:fa2de1b79154 284 }
Azure.IoT Build 0:fa2de1b79154 285 else
Azure.IoT Build 0:fa2de1b79154 286 {
Azure.IoT Build 0:fa2de1b79154 287 /*Codes_SRS_CRT_ABSTRACTIONS_99_035: [mallocAndstrcpy_s shall return Zero upon success]*/
Azure.IoT Build 0:fa2de1b79154 288 result = 0;
Azure.IoT Build 0:fa2de1b79154 289 }
Azure.IoT Build 0:fa2de1b79154 290 }
Azure.IoT Build 0:fa2de1b79154 291 }
Azure.IoT Build 0:fa2de1b79154 292 return result;
Azure.IoT Build 0:fa2de1b79154 293 }
Azure.IoT Build 0:fa2de1b79154 294
Azure.IoT Build 0:fa2de1b79154 295 /*takes "value" and transforms it into a decimal string*/
Azure.IoT Build 0:fa2de1b79154 296 /*10 => "10"*/
Azure.IoT Build 0:fa2de1b79154 297 /*return 0 when everything went ok*/
Azure.IoT Build 0:fa2de1b79154 298 /*Codes_SRS_CRT_ABSTRACTIONS_02_001: [unsignedIntToString shall convert the parameter value to its decimal representation as a string in the buffer indicated by parameter destination having the size indicated by parameter destinationSize.] */
Azure.IoT Build 0:fa2de1b79154 299 int unsignedIntToString(char* destination, size_t destinationSize, unsigned int value)
Azure.IoT Build 0:fa2de1b79154 300 {
Azure.IoT Build 0:fa2de1b79154 301 int result;
Azure.IoT Build 0:fa2de1b79154 302 size_t pos;
Azure.IoT Build 0:fa2de1b79154 303 /*the below loop gets the number in reverse order*/
Azure.IoT Build 0:fa2de1b79154 304 /*Codes_SRS_CRT_ABSTRACTIONS_02_003: [If destination is NULL then unsignedIntToString shall fail.] */
Azure.IoT Build 0:fa2de1b79154 305 /*Codes_SRS_CRT_ABSTRACTIONS_02_002: [If the conversion fails for any reason (for example, insufficient buffer space), a non-zero return value shall be supplied and unsignedIntToString shall fail.] */
Azure.IoT Build 0:fa2de1b79154 306 if (
Azure.IoT Build 0:fa2de1b79154 307 (destination == NULL) ||
Azure.IoT Build 0:fa2de1b79154 308 (destinationSize < 2) /*because the smallest number is '0\0' which requires 2 characters*/
Azure.IoT Build 0:fa2de1b79154 309 )
Azure.IoT Build 0:fa2de1b79154 310 {
Azure.IoT Build 0:fa2de1b79154 311 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 312 }
Azure.IoT Build 0:fa2de1b79154 313 else
Azure.IoT Build 0:fa2de1b79154 314 {
Azure.IoT Build 0:fa2de1b79154 315 pos = 0;
Azure.IoT Build 0:fa2de1b79154 316 do
Azure.IoT Build 0:fa2de1b79154 317 {
Azure.IoT Build 0:fa2de1b79154 318 destination[pos++] = '0' + (value % 10);
Azure.IoT Build 0:fa2de1b79154 319 value /= 10;
Azure.IoT Build 0:fa2de1b79154 320 } while ((value > 0) && (pos < (destinationSize-1)));
Azure.IoT Build 0:fa2de1b79154 321
Azure.IoT Build 0:fa2de1b79154 322 if (value == 0)
Azure.IoT Build 0:fa2de1b79154 323 {
Azure.IoT Build 0:fa2de1b79154 324 size_t w;
Azure.IoT Build 0:fa2de1b79154 325 destination[pos] = '\0';
Azure.IoT Build 0:fa2de1b79154 326 /*all converted and they fit*/
Azure.IoT Build 0:fa2de1b79154 327 for (w = 0; w <= (pos-1) >> 1; w++)
Azure.IoT Build 0:fa2de1b79154 328 {
Azure.IoT Build 0:fa2de1b79154 329 char temp;
Azure.IoT Build 0:fa2de1b79154 330 temp = destination[w];
Azure.IoT Build 0:fa2de1b79154 331 destination[w] = destination[pos - 1 - w];
Azure.IoT Build 0:fa2de1b79154 332 destination[pos -1 - w] = temp;
Azure.IoT Build 0:fa2de1b79154 333 }
Azure.IoT Build 0:fa2de1b79154 334 /*Codes_SRS_CRT_ABSTRACTIONS_02_004: [If the conversion has been successfull then unsignedIntToString shall return 0.] */
Azure.IoT Build 0:fa2de1b79154 335 result = 0;
Azure.IoT Build 0:fa2de1b79154 336 }
Azure.IoT Build 0:fa2de1b79154 337 else
Azure.IoT Build 0:fa2de1b79154 338 {
Azure.IoT Build 0:fa2de1b79154 339 /*Codes_SRS_CRT_ABSTRACTIONS_02_002: [If the conversion fails for any reason (for example, insufficient buffer space), a non-zero return value shall be supplied and unsignedIntToString shall fail.] */
Azure.IoT Build 0:fa2de1b79154 340 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 341 }
Azure.IoT Build 0:fa2de1b79154 342 }
Azure.IoT Build 0:fa2de1b79154 343 return result;
Azure.IoT Build 0:fa2de1b79154 344 }
Azure.IoT Build 0:fa2de1b79154 345
Azure.IoT Build 0:fa2de1b79154 346 /*takes "value" and transforms it into a decimal string*/
Azure.IoT Build 0:fa2de1b79154 347 /*10 => "10"*/
Azure.IoT Build 0:fa2de1b79154 348 /*return 0 when everything went ok*/
Azure.IoT Build 0:fa2de1b79154 349 /*Codes_SRS_CRT_ABSTRACTIONS_02_001: [unsignedIntToString shall convert the parameter value to its decimal representation as a string in the buffer indicated by parameter destination having the size indicated by parameter destinationSize.] */
Azure.IoT Build 0:fa2de1b79154 350 int size_tToString(char* destination, size_t destinationSize, size_t value)
Azure.IoT Build 0:fa2de1b79154 351 {
Azure.IoT Build 0:fa2de1b79154 352 int result;
Azure.IoT Build 0:fa2de1b79154 353 size_t pos;
Azure.IoT Build 0:fa2de1b79154 354 /*the below loop gets the number in reverse order*/
Azure.IoT Build 0:fa2de1b79154 355 /*Codes_SRS_CRT_ABSTRACTIONS_02_003: [If destination is NULL then unsignedIntToString shall fail.] */
Azure.IoT Build 0:fa2de1b79154 356 /*Codes_SRS_CRT_ABSTRACTIONS_02_002: [If the conversion fails for any reason (for example, insufficient buffer space), a non-zero return value shall be supplied and unsignedIntToString shall fail.] */
Azure.IoT Build 0:fa2de1b79154 357 if (
Azure.IoT Build 0:fa2de1b79154 358 (destination == NULL) ||
Azure.IoT Build 0:fa2de1b79154 359 (destinationSize < 2) /*because the smallest number is '0\0' which requires 2 characters*/
Azure.IoT Build 0:fa2de1b79154 360 )
Azure.IoT Build 0:fa2de1b79154 361 {
Azure.IoT Build 0:fa2de1b79154 362 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 363 }
Azure.IoT Build 0:fa2de1b79154 364 else
Azure.IoT Build 0:fa2de1b79154 365 {
Azure.IoT Build 0:fa2de1b79154 366 pos = 0;
Azure.IoT Build 0:fa2de1b79154 367 do
Azure.IoT Build 0:fa2de1b79154 368 {
Azure.IoT Build 0:fa2de1b79154 369 destination[pos++] = '0' + (value % 10);
Azure.IoT Build 0:fa2de1b79154 370 value /= 10;
Azure.IoT Build 0:fa2de1b79154 371 } while ((value > 0) && (pos < (destinationSize - 1)));
Azure.IoT Build 0:fa2de1b79154 372
Azure.IoT Build 0:fa2de1b79154 373 if (value == 0)
Azure.IoT Build 0:fa2de1b79154 374 {
Azure.IoT Build 0:fa2de1b79154 375 size_t w;
Azure.IoT Build 0:fa2de1b79154 376 destination[pos] = '\0';
Azure.IoT Build 0:fa2de1b79154 377 /*all converted and they fit*/
Azure.IoT Build 0:fa2de1b79154 378 for (w = 0; w <= (pos - 1) >> 1; w++)
Azure.IoT Build 0:fa2de1b79154 379 {
Azure.IoT Build 0:fa2de1b79154 380 char temp;
Azure.IoT Build 0:fa2de1b79154 381 temp = destination[w];
Azure.IoT Build 0:fa2de1b79154 382 destination[w] = destination[pos - 1 - w];
Azure.IoT Build 0:fa2de1b79154 383 destination[pos - 1 - w] = temp;
Azure.IoT Build 0:fa2de1b79154 384 }
Azure.IoT Build 0:fa2de1b79154 385 /*Codes_SRS_CRT_ABSTRACTIONS_02_004: [If the conversion has been successfull then unsignedIntToString shall return 0.] */
Azure.IoT Build 0:fa2de1b79154 386 result = 0;
Azure.IoT Build 0:fa2de1b79154 387 }
Azure.IoT Build 0:fa2de1b79154 388 else
Azure.IoT Build 0:fa2de1b79154 389 {
Azure.IoT Build 0:fa2de1b79154 390 /*Codes_SRS_CRT_ABSTRACTIONS_02_002: [If the conversion fails for any reason (for example, insufficient buffer space), a non-zero return value shall be supplied and unsignedIntToString shall fail.] */
Azure.IoT Build 0:fa2de1b79154 391 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 392 }
Azure.IoT Build 0:fa2de1b79154 393 }
Azure.IoT Build 0:fa2de1b79154 394 return result;
Azure.IoT Build 0:fa2de1b79154 395 }