Newer
Older
converter * converter::instance = NULL;
uint16_t converter::swap(const uint16_t p_value) {
uint8_t *ptr = (uint8_t *)&p_value;
return (ptr[0] << 8) | ptr[1];
}
uint32_t converter::swap(const uint32_t p_value) {
uint8_t *ptr = (uint8_t *)&p_value;
return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
}
const std::string converter::lut_u = "0123456789ABCDEF";
const std::string converter::lut_l = "0123456789abcdef";
std::string converter::string_to_hexa(const std::string & p_value, const bool p_uppercase) {
std::string input(p_value);
std::for_each(
input.begin(),
input.end(),
[](char & c) {
c = std::toupper(c);
}
);
std::string output;
uint32_t length = p_value.length();
output.reserve(2 * length);
if (p_uppercase) { // TODO Use pointer to reduce code size
for (uint32_t i = 0; i < length; ++i) {
const uint8_t c = input[i];
output.push_back(lut_u[c >> 4]);
output.push_back(lut_u[c & 15]);
} // End of 'for' statement
} else {
for (uint32_t i = 0; i < length; ++i) {
const uint8_t c = input[i];
output.push_back(lut_l[c >> 4]);
output.push_back(lut_l[c & 15]);
} // End of 'for' statement
}
std::string converter::bytes_to_hexa(const std::vector<uint8_t> & p_value, const bool p_uppercase) {
std::string ret;
ret.assign(p_value.size()*2, ' ');
if (p_uppercase) { // TODO Use pointer to reduce code size
for(size_t i=0; i<p_value.size(); i++){
uint8_t c = p_value[i];
ret[i*2] = lut_u[c>>4];
ret[i*2+1] = lut_u[c&0xF];
}
} else {
for(size_t i=0; i<p_value.size(); i++){
uint8_t c = p_value[i];
ret[i*2] = lut_l[c>>4];
ret[i*2+1] = lut_l[c&0xF];
}
inline uint8_t char2byte(const char p_ch) {
size_t s = converter::lut_l.find(p_ch);
if(s == std::string::npos) {
if ((s = converter::lut_u.find(p_ch)) == std::string::npos) {
throw (std::length_error(""));
}
}
std::vector<uint8_t> converter::hexa_to_bytes(const std::string & p_value) {
// Sanity check
std::vector<uint8_t> output;
size_t i=0, idx = 0, outlen=(p_value.length()+1) / 2;
output.assign(outlen, 0x00);
try{
if (p_value.length() & 1)
output[idx++] = char2byte(p_value[i++]);
for(;idx<outlen;idx++){
uint8_t b0 = char2byte(p_value[i++]);
uint8_t b1 = char2byte(p_value[i++]);
output[idx] = (b0<<4)|b1;
}
catch (const std::length_error& le) {
output.clear();
}
return output;
}
std::string converter::time_to_string(const time_t p_time) {
struct tm * t = std::localtime(&p_time);
return time_to_string(*t);
}
std::string converter::time_to_string(const struct tm & p_time) {
char buffer[64] = { 0 };
// Format: RFC 822, 1036, 1123, 2822
std::strftime(buffer, 64, "%a, %d %b %Y %H:%M:%S %z", &p_time);
return std::string(buffer);
}
std::string converter::trim(const std::string& str, const std::string& whitespace) {
size_t strBegin = str.find_first_not_of(whitespace);
if (strBegin == std::string::npos)
return ""; // no content
size_t strEnd = str.find_last_not_of(whitespace);
size_t strRange = strEnd - strBegin + 1;
return str.substr(strBegin, strRange);
}
std::vector<std::string> converter::split(const std::string & p_value, const std::string& p_separator) {
std::vector<std::string> output;
std::size_t current, previous = 0;
current = p_value.find(p_separator);
while (current != std::string::npos) {
output.push_back(p_value.substr(previous, current - previous));
previous = current + 1;
current = p_value.find(p_separator, previous);
}
output.push_back(p_value.substr(previous, current - previous));
return output;
}
std::vector<std::string> converter::split_arguments_line(const std::string & p_value) {
std::vector<std::string> output;
std::string line = trim(p_value);
if (!line.empty() && (line[0] == '-')) { // Valid command line
size_t current = 0;
size_t next = (size_t)-1;
size_t pos = 0;
do {
if (line[pos + 1] == '-') { // --
current = pos + 2;
} else {
current = pos + 1;
}
next = line.find("-", current);
std::string str(line.substr(pos, next - pos));
output.push_back(str);
pos = next;
} while (next != std::string::npos);
} // else, invalid command line
return output;
}
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const std::string converter::base64_enc_map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
std::vector<unsigned char> converter::buffer_to_base64(const std::vector<unsigned char> & p_value) {
std::vector<unsigned char> out;
int val = 0, valb = -6;
for (unsigned char c : p_value) {
val = (val << 8) + c;
valb += 8;
while (valb >= 0) {
out.push_back(converter::base64_enc_map[(val >> valb) & 0x3F]);
valb -= 6;
} // End of 'while' statement
} // End of 'for' statement
if (valb > -6) {
out.push_back(converter::base64_enc_map[((val << 8) >> (valb + 8)) & 0x3F]);
}
while (out.size() % 4) {
out.push_back('=');
} // End of 'while' statement
return out;
}
std::vector<unsigned char> converter::base64_to_buffer(const std::vector<unsigned char> &p_value) {
std::vector<unsigned char> out;
std::vector<int> T(256, -1);
for (int i = 0; i < 64; i++) {
T[converter::base64_enc_map[i]] = i;
}
int val = 0, valb = -8;
for (unsigned char c : p_value) {
if (T[c] == -1) {
break;
}
val = (val << 6) + T[c];
valb += 6;
if (valb >= 0) {
out.push_back((unsigned char)char((val >> valb) & 0xFF));
valb -= 8;
}
} // End of 'for' statement
return out;
}