json_escape

This function turns a string into a JSON escaped string.

Interface

IO	Parameter	Description	Data Type
OUT	pDest	Pointer to destination string	UDINT
IN	pSrc	Pointer to source string	UDINT
IN	maxLength	Max string length of pDest	UDINT
OUT	reentry	Pointer to a string pointer. Is populated with a pointer to the next character in pSrc, if end of pSrc is not reached before reaching maxLength. Optional, provide 0 if not desired	UDINT
OUT	return	New string length of destination	UDINT

Example

    unsigned long reentry, length;
    char destination[50];
    char source[50];
    strcpy(source, "{\"test\": 1}");
    length = json_escape(&destination, &source, sizeof(destination)-1, 0);
    // destination == "{\\\"test\\\": 1}"

    unsigned long reentry, length;
    length = json_escape(&tempString, &source, sizeof(destination)-1, &reentry);

    strcat(buffer, tempString)

    while(reentry != 0){
        length = json_escape(&tempString, reentry, sizeof(destination)-1, &reentry);
        strcat(buffer, tempString)
    }