Get Section Of A String
some_other_string = my_string.substr(8, string::npos); //Copy from character 8 to the end
Get String After String
my_string = my_string.substr((my_string.find("inet ") + 5), string::npos);
Get String Before Character
my_string = my_string.substr(0, my_string.find('/')); //Will return existing string if character not found
Convert ASCII string of hex values to binary array example code
//----- CONVERT ASCII STRING TO BINAY ARRAY -----
string my_source_string = "> 04 3E 2B 02 01 00 00 B7 82 25 3F 23 AC 1F 02 01 06 03 03 F1 FF 17 16 A8 89 7C 96 39 3C 4A A0 B3 EF 43 0D A8 21 F3 54 00 00 00 00 C5 64";
const int MY_ARRAY_LENGTH = 44;
char *p_buffer;
char high_char;
char low_char;
BYTE my_binary_array[MY_ARRAY_LENGTH];
int count;
count = 0;
if (my_source_string[0] != '>')
return;
p_buffer = (char*)hcidump_event.c_str();
p_buffer++;
while (1)
{
p_buffer++;
if (*p_buffer == 0)
return; //Wasn't long enough so can't be iBeacon
if (*p_buffer == ' ')
continue;
if (*p_buffer == '\n')
continue;
//We have next 2 digit value
high_char = *p_buffer++;
low_char = *p_buffer;
if (
(high_char < '0') || (high_char > '9') &&
(high_char < 'A') || (high_char > 'F') &&
(high_char < 'a') || (high_char > 'f')
)
{
return;
}
if (
(low_char < '0') || (low_char > '9') &&
(low_char < 'A') || (low_char > 'F') &&
(low_char < 'a') || (low_char > 'f')
)
{
return;
}
my_binary_array[count++] = convert_ascii_hex_to_byte(high_char, low_char);
if (count >= MY_ARRAY_LENGTH)
break; //We have all the values we want
} //while (1)
//We have our array of values
USEFUL?
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