Documentation:

string NewString()

returns empty string with length -1

Usage: string test = NewString();

**int StrSetdata(string data, char str)

writes char* into string data

returns 1 on success and 0 on fail to allocate memory

Usage: result = StrSetdata(data, „Stuff...“);

*int StrLen(char data)

returns length of char array *data

Usage: result = StrLen(data);

*int StrIndexOf(char data, char rexp)

returns first index of character (rexp)

Usage: index = StrIndexOf(data, 'A');

*int StrLastIndexOf(char data, char rexp)

returns last index of character (rexp)

Usage: index = StrLastIndexOf(data, 'A');

char StrSubstring(char data, int start, int end)

returns new char array, filled by characters from char array *data from start index to end index or return empty string represented by STR_NULL which is character '\0'

Usage: new = StrSubstring(data, 1, 6);

*void StrReplace(char data, char old_rexp, char new_rexp)

replace old characters with new cahracters

Usage: StrReplace(data, 'y', 'i');

void StrFree(string data)

remove content of char array *data in structure string from heap and set length of string to -1

Usage: StrFree(data);