87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
#include "utilities.h"
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char *addChar(char *pointer, const char character)
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{
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char *tempAddr = NULL;
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if(pointer == NULL)
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{
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tempAddr = (char *) realloc(pointer, 2*sizeof(char));
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if(tempAddr == NULL)
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return NULL;
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else
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{
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pointer = tempAddr;
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pointer[0] = character;
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pointer[1] = '\0';
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}
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}
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else
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{
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tempAddr = (char *) realloc(pointer, (strlen(pointer)+2)*sizeof(char));
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if(tempAddr == NULL)
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{
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free(pointer);
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return NULL;
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}
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else
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{
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pointer = tempAddr;
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pointer[strlen(pointer)+1] = '\0';
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pointer[strlen(pointer)] = character;
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}
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}
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return pointer;
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}
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char *dateTimeFormater(char *pointer, const uint8_t value, const char character)
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{
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if(pointer == NULL)
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return pointer;
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if(value < 10)
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{
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sprintf(pointer,"%d", value);
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*(pointer+1) = *(pointer);*(pointer) = character;*(pointer+2) = '\0';
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}
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else
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sprintf(pointer,"%d", value);
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return pointer;
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}
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/**
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* The monthNumTo3LetterAbbreviation function takes the month number from 1 to 12 and returns the abbreviation in a 3 letter
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* format.
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*/
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uint32_t monthNumTo3LetterAbbreviation(const uint8_t monthNumber)
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{
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/**
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* This array contains months as 3 letter abbreviations
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* Jan is written \0naJ and in hex : 0x006E614A an so on. They are thus 4Bytes aligned and easy to put and read back from prog mem :)
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*/
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static const uint32_t PROGMEM monthArray[] = {0x6E614A, 0x626546, 0x72614D, 0x727041, 0x79614D, 0x6E754A, 0x6C754A, 0x677541, 0x706553, 0x74634F, 0x766f4E, 0x636544};
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uint32_t toReturn(0x6E614A); //Default to Jan.
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if(monthNumber >= 1 && monthNumber <= 12)
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toReturn = monthArray[monthNumber - 1];
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return toReturn;
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}
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void *mallocWithFallback(size_t requestedSize, size_t *acceptedSize)
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{
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void *allocAddr(nullptr);
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uint32_t divider(1);
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do
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{
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requestedSize /= divider++;
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allocAddr = malloc(requestedSize);
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} while(!allocAddr && requestedSize >= 50); //If we can't even manage to malloc 50 bytes then we should give up and cry
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if(acceptedSize && allocAddr)*acceptedSize = requestedSize;
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else if(acceptedSize)*acceptedSize = 0;
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return allocAddr;
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} |