/*
 * ================================
 * eli960@qq.com
 * http://linuxmail.cn/
 * 2021年04月23日
 * ================================
 */

#include "zcc/zcc_stdlib.h"

zcc_namespace_begin;

void uudecode(const void *src, int src_size, std::string &str)
{
 const unsigned char *s = (const unsigned char *)src;
 if (src_size < 0)
 {
 src_size = (int)std::strlen((const char *)s);
 }
 const unsigned char *e = s + src_size;

 while (s < e - 4)
 {
 int v = 0;
 int i;
 for (i = 0; i < 4; i += 1)
 {
 int c = *s++;
 v = v << 6 | ((c - 0x20) & 0x3F);
 }
 for (i = 2; i >= 0; i -= 1)
 {
 int c = (v & 0xFF);
 str.push_back((char)c);
 v = v >> 8;
 }
 }
 while (s < e)
 {
 int c = *s++;
 str.push_back((char)c);
 }
}

zcc_namespace_end;