#include <stdlib.h>

#include <ctype.h>

#include <stdint.h>

#include <string.h>

#include <unistd.h>

#include <sys/types.h>

#include "linkedlist.h"

#include "logging.h"

#include "minieap_common.h"

//#define ICONV

#ifdef ICONV

#include <iconv.h>

#endif

void chk_free(void** pptr) {

if (pptr == NULL || *pptr == NULL)

return;

free(*pptr);

*pptr = NULL;

}

uint8_t char2hex(const char* str) {

#define LOWER2HEX(digit) ((digit >= 'a') ? (10 + (digit - 'a')) : (digit - '0'))

const char digit0 = tolower(str[0]);

const char digit1 = tolower(str[1]);

if (digit1 == 0) {

return LOWER2HEX(digit0);

}

return 16 * LOWER2HEX(digit0) + LOWER2HEX(digit1);

}

uint8_t bit_reverse(uint8_t in) {

static const uint8_t half_reverse_table[] = {

0x0, 0x8, 0x4, 0xc, 0x2, 0xa, 0x6, 0xe,

0x1, 0x9, 0x5, 0xd, 0x3, 0xb, 0x7, 0xf

};

return half_reverse_table[in & 0xf] << 4 | half_reverse_table[(in & 0xf0) >> 4];

}

void gbk2utf8(char* in, size_t inlen, char* out, size_t outlen) {

#ifdef ICONV

iconv_t _cd = iconv_open("utf-8", "gbk");

if (_cd < 0) {

PR_WARN("无法从 iconv 获取编码描述符，服务器消息可能会出现乱码");

goto legacy;

} else {

iconv(_cd, &in, &inlen, &out, &outlen);

iconv_close(_cd);

return;

}

legacy:

#endif

memmove(out, in, inlen);

}

void pr_info_gbk(char* in, size_t inlen) {

size_t _utf8_size = (inlen >> 1) * 3;

char* _utf8_buf = (char*)malloc(_utf8_size);

memset(_utf8_buf, 0, _utf8_size);

if (_utf8_buf > 0) {

gbk2utf8(in, inlen, _utf8_buf, _utf8_size);

PR_INFO("%s", _utf8_buf);

free(_utf8_buf);

} else {

_utf8_buf = in;

PR_INFO("%s", _utf8_buf);

}

}

RESULT go_background() {

pid_t pid;

pid = fork();

if (pid < 0)

return FAILURE;

if (pid > 0)

_exit(0); /* Do not call exit_handler() */

if (setsid() < 0)

return FAILURE;

return SUCCESS;

}