/*
 * (C) 2007-2010 Alibaba Group Holding Limited.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *
 * Version: $Id: func.h 983 2011-10-31 09:59:33Z duanfei $
 *
 * Authors:
 *   duolong <duolong@taobao.com>
 *      - initial release
 *
 */
#ifndef TFS_COMMON_FUNC_H_
#define TFS_COMMON_FUNC_H_

#include <sys/vfs.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <unistd.h>
#include <netdb.h>
#include <inttypes.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include <string>
#include <tbsys.h>

#include "internal.h"

namespace tfs
{
  namespace common
  {
    class Func
    {
    public:
      static int get_disk_usage(const char* path, int64_t* used_bytes, int64_t* total_bytes);
      static int get_load_avg();
      static int make_directory(char* path);
      static int get_base_name(char* path, char* dirpath);

			/**
			 * @brief get parent dir by file_path
			 *
			 * @param file_path: file path
			 * @param dir_path: result parent dir
			 * @param dir_buf_len: dir path buffer length
			 *
			 * @return
			 */
			static int get_parent_dir(const char* file_path, char* dir_path, const int32_t dir_buf_len);

      static uint32_t get_local_addr(const char* dev_name = NULL);
      static bool is_local_addr(const uint32_t ip);
      static uint32_t get_addr(const char* ip);
      static uint64_t str_to_addr(const char* ip, const int32_t port);
      static std::string addr_to_str(const uint64_t ipport, bool with_port);
      static uint64_t get_host_ip(const char *s);
      //static uint64_t addr_inc_port(const uint64_t ipport, const int32_t inc);
      static uint32_t get_lan(uint64_t ipport, uint32_t ipmask);
      static int assign_ip_addr(const char* ifname, const char* ip, const char* mask);

      static char* str_to_lower(char* psz_buf);
      static char* str_to_upper(char* psz_buf);

      static uint32_t crc(uint32_t crc, const char* data, const int32_t len);

      static char* subright(char* dst, char* src, int32_t n);
      static int check_pid(const char* lock_file);
      static int write_pid(const char* lock_file);
      static std::string format_size(const int64_t c);
      static int64_t curr_time();
      static std::string time_to_str(time_t t, int f = 0);
      static char* safe_malloc(const int32_t len, char* data = NULL);
      static void sleep(const float f_heart_interval, bool& stop);
      static void sleep(const float f_heart_interval, int32_t& stop);
      static bool hour_range(int min, int max);
      static int32_t split_string(const char* line, const char del, std::vector<std::string>& fields);

      static int start_daemon(const char *pid_file, const char *log_file);
      static void hex_dump(const void* data, const int32_t size,
                           const bool char_type = true, const int32_t log_level = TBSYS_LOG_LEVEL_DEBUG);
      /* bit opertion */
      static int32_t set_bit(int32_t& data, int32_t index);
      static int32_t clr_bit(int32_t& data, int32_t index);
      static int32_t test_bit(int32_t data, int32_t index);

      static int64_t get_monotonic_time();
      static int64_t get_monotonic_time_ms();
      static int64_t get_monotonic_time_us();

#ifdef _syscall0
      static _syscall0(pid_t,gettid)
#else
        static pid_t gettid()
        {
          return syscall(__NR_gettid);
        }
#endif
    };

    static const char _sizeunits[] = "KMGTP";

    static const uint32_t _crc32tab[] = {
      0x0,0x77073096,0xee0e612c,0x990951ba,0x76dc419,0x706af48f,0xe963a535,0x9e6495a3,0xedb8832,0x79dcb8a4,
      0xe0d5e91e,0x97d2d988,0x9b64c2b,0x7eb17cbd,0xe7b82d07,0x90bf1d91,0x1db71064,0x6ab020f2,0xf3b97148,0x84be41de,
      0x1adad47d,0x6ddde4eb,0xf4d4b551,0x83d385c7,0x136c9856,0x646ba8c0,0xfd62f97a,0x8a65c9ec,0x14015c4f,0x63066cd9,
      0xfa0f3d63,0x8d080df5,0x3b6e20c8,0x4c69105e,0xd56041e4,0xa2677172,0x3c03e4d1,0x4b04d447,0xd20d85fd,0xa50ab56b,
      0x35b5a8fa,0x42b2986c,0xdbbbc9d6,0xacbcf940,0x32d86ce3,0x45df5c75,0xdcd60dcf,0xabd13d59,0x26d930ac,0x51de003a,
      0xc8d75180,0xbfd06116,0x21b4f4b5,0x56b3c423,0xcfba9599,0xb8bda50f,0x2802b89e,0x5f058808,0xc60cd9b2,0xb10be924,
      0x2f6f7c87,0x58684c11,0xc1611dab,0xb6662d3d,0x76dc4190,0x1db7106,0x98d220bc,0xefd5102a,0x71b18589,0x6b6b51f,
      0x9fbfe4a5,0xe8b8d433,0x7807c9a2,0xf00f934,0x9609a88e,0xe10e9818,0x7f6a0dbb,0x86d3d2d,0x91646c97,0xe6635c01,
      0x6b6b51f4,0x1c6c6162,0x856530d8,0xf262004e,0x6c0695ed,0x1b01a57b,0x8208f4c1,0xf50fc457,0x65b0d9c6,0x12b7e950,
      0x8bbeb8ea,0xfcb9887c,0x62dd1ddf,0x15da2d49,0x8cd37cf3,0xfbd44c65,0x4db26158,0x3ab551ce,0xa3bc0074,0xd4bb30e2,
      0x4adfa541,0x3dd895d7,0xa4d1c46d,0xd3d6f4fb,0x4369e96a,0x346ed9fc,0xad678846,0xda60b8d0,0x44042d73,0x33031de5,
      0xaa0a4c5f,0xdd0d7cc9,0x5005713c,0x270241aa,0xbe0b1010,0xc90c2086,0x5768b525,0x206f85b3,0xb966d409,0xce61e49f,
      0x5edef90e,0x29d9c998,0xb0d09822,0xc7d7a8b4,0x59b33d17,0x2eb40d81,0xb7bd5c3b,0xc0ba6cad,0xedb88320,0x9abfb3b6,
      0x3b6e20c,0x74b1d29a,0xead54739,0x9dd277af,0x4db2615,0x73dc1683,0xe3630b12,0x94643b84,0xd6d6a3e,0x7a6a5aa8,
      0xe40ecf0b,0x9309ff9d,0xa00ae27,0x7d079eb1,0xf00f9344,0x8708a3d2,0x1e01f268,0x6906c2fe,0xf762575d,0x806567cb,
      0x196c3671,0x6e6b06e7,0xfed41b76,0x89d32be0,0x10da7a5a,0x67dd4acc,0xf9b9df6f,0x8ebeeff9,0x17b7be43,0x60b08ed5,
      0xd6d6a3e8,0xa1d1937e,0x38d8c2c4,0x4fdff252,0xd1bb67f1,0xa6bc5767,0x3fb506dd,0x48b2364b,0xd80d2bda,0xaf0a1b4c,
      0x36034af6,0x41047a60,0xdf60efc3,0xa867df55,0x316e8eef,0x4669be79,0xcb61b38c,0xbc66831a,0x256fd2a0,0x5268e236,
      0xcc0c7795,0xbb0b4703,0x220216b9,0x5505262f,0xc5ba3bbe,0xb2bd0b28,0x2bb45a92,0x5cb36a04,0xc2d7ffa7,0xb5d0cf31,
      0x2cd99e8b,0x5bdeae1d,0x9b64c2b0,0xec63f226,0x756aa39c,0x26d930a,0x9c0906a9,0xeb0e363f,0x72076785,0x5005713,
      0x95bf4a82,0xe2b87a14,0x7bb12bae,0xcb61b38,0x92d28e9b,0xe5d5be0d,0x7cdcefb7,0xbdbdf21,0x86d3d2d4,0xf1d4e242,
      0x68ddb3f8,0x1fda836e,0x81be16cd,0xf6b9265b,0x6fb077e1,0x18b74777,0x88085ae6,0xff0f6a70,0x66063bca,0x11010b5c,
      0x8f659eff,0xf862ae69,0x616bffd3,0x166ccf45,0xa00ae278,0xd70dd2ee,0x4e048354,0x3903b3c2,0xa7672661,0xd06016f7,
      0x4969474d,0x3e6e77db,0xaed16a4a,0xd9d65adc,0x40df0b66,0x37d83bf0,0xa9bcae53,0xdebb9ec5,0x47b2cf7f,0x30b5ffe9,
      0xbdbdf21c,0xcabac28a,0x53b39330,0x24b4a3a6,0xbad03605,0xcdd70693,0x54de5729,0x23d967bf,0xb3667a2e,0xc4614ab8,
      0x5d681b02,0x2a6f2b94,0xb40bbe37,0xc30c8ea1,0x5a05df1b,0x2d02ef8d};

  }
}
#endif //TFS_COMMON_FUNC_H_
