/*
 * ================================
 * eli960@qq.com
 * http://linuxmail.cn/
 * 2015年12月06日
 * ================================
 */

#include "zcc/zcc_stdlib.h"

zcc_namespace_begin;

void hex_encode(const void *src, int64_t src_size, std::string &str)
{
 unsigned char dec2hex[18] = "0123456789ABCDEF";
 unsigned char *src_c = (unsigned char *)src;
 int src_pos;
 int addch1, addch2;
 if (src_size < 0)
 {
 src_size = (int)std::strlen((const char *)src);
 }
 for (src_pos = 0; src_pos < src_size; src_pos++)
 {
 addch1 = dec2hex[src_c[src_pos] >> 4];
 addch2 = dec2hex[src_c[src_pos] & 0X0F];
 str.push_back((char)addch1);
 str.push_back((char)addch2);
 }
}

std::string hex_encode(const void *src, int64_t src_size)
{
 std::string str;
 hex_encode(src, src_size, str);
 return str;
}

void hex_decode(const void *src, int64_t src_size, std::string &str)
{
 unsigned char *src_c = (unsigned char *)src;
 int src_pos;
 unsigned char h_l, h_r;
 int addch;
 if (src_size < 0)
 {
 src_size = (int)std::strlen((const char *)src);
 }
 for (src_pos = 0; src_pos + 1 < src_size; src_pos += 2)
 {
 h_l = (unsigned char)(var_char_xdigitval_vector[src_c[src_pos]] << 4);
 h_r = (unsigned char)(var_char_xdigitval_vector[src_c[src_pos + 1]]);
 addch = (h_l | h_r);
 str.push_back((char)addch);
 }
}

std::string hex_decode(const void *src, int64_t src_size)
{
 std::string str;
 hex_decode(src, src_size, str);
 return str;
}

zcc_namespace_end;