//-----------------------------------------------------------------------------
// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// utilities
//-----------------------------------------------------------------------------
#ifndef __UTIL_H_
#define __UTIL_H_

#include <stdint.h> //included in data.h
#include <stddef.h>
#include <inttypes.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include "ui.h"     // PrintAndLog

#ifdef ANDROID
#include <endian.h>
#endif

#ifndef BITMASK
# define BITMASK(X) (1 << (X))
#endif
#ifndef ROTR
# define ROTR(x,n) (((uintmax_t)(x) >> (n)) | ((uintmax_t)(x) << ((sizeof(x) * 8) - (n))))
#endif
#ifndef ROTL
# define ROTL(x,n) (((uintmax_t)(x) << (n)) | ((uintmax_t)(x) >> ((sizeof(x) * 8) - (n))))
#endif

#ifndef MIN
# define MIN(a, b) (((a) < (b)) ? (a) : (b))
#endif
#ifndef MAX
# define MAX(a, b) (((a) > (b)) ? (a) : (b))
#endif

// endian change for 64bit
#ifdef __GNUC__
#ifndef BSWAP_64
#define BSWAP_64(x) __builtin_bswap64(x)
#endif
#else
#ifdef _MSC_VER
#ifndef BSWAP_64
#define BSWAP_64(x) _byteswap_uint64(x)
#endif
#else
#ifndef BSWAP_64
#define BSWAP_64(x) \
    (((uint64_t)(x) << 56) | \
     (((uint64_t)(x) << 40) & 0xff000000000000ULL) | \
     (((uint64_t)(x) << 24) & 0xff0000000000ULL) | \
     (((uint64_t)(x) << 8)  & 0xff00000000ULL) | \
     (((uint64_t)(x) >> 8)  & 0xff000000ULL) | \
     (((uint64_t)(x) >> 24) & 0xff0000ULL) | \
     (((uint64_t)(x) >> 40) & 0xff00ULL) | \
     ((uint64_t)(x)  >> 56))
#endif
#endif
#endif

// endian change for 32bit
#ifdef __GNUC__
#ifndef BSWAP_32
#define BSWAP_32(x) __builtin_bswap32(x)
#endif
#else
#ifdef _MSC_VER
#ifndef BSWAP_32
#define BSWAP_32(x) _byteswap_ulong(x)
#endif
#else
#ifndef BSWAP_32
# define BSWAP_32(x) \
    ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) | \
     (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24))
#endif
#endif
#endif

// endian change for 16bit
#ifdef __GNUC__
#ifndef BSWAP_16
#define BSWAP_16(x) __builtin_bswap16(x)
#endif
#else
#ifdef _MSC_VER
#ifndef BSWAP_16
#define BSWAP_16(x) _byteswap_ushort(x)
#endif
#else
#ifndef BSWAP_16
# define BSWAP_16(x) ((( ((x) & 0xFF00 ) >> 8))| ( (((x) & 0x00FF) << 8)))
#endif
#endif
#endif

#define EVEN                        0
#define ODD                         1

// Nibble logic
#ifndef NIBBLE_HIGH
# define NIBBLE_HIGH(b) ( (b & 0xF0) >> 4 )
#endif
#ifndef NIBBLE_LOW
# define NIBBLE_LOW(b)  ( b & 0x0F )
#endif
#ifndef CRUMB
# define CRUMB(b,p)    (((b & (0x3 << p) ) >> p ) & 0xF)
#endif
#ifndef SWAP_NIBBLE
# define SWAP_NIBBLE(b)  ( (NIBBLE_LOW(b)<< 4) | NIBBLE_HIGH(b))
#endif

// Binary Encoded Digit
#ifndef BCD2DEC
# define BCD2DEC(bcd) HornerScheme(bcd, 0x10, 10)
#endif
#ifndef DEC2BCD
# define DEC2BCD(dec) HornerScheme(dec, 10, 0x10)
#endif

// used for save/load files
#ifndef FILE_PATH_SIZE
# define FILE_PATH_SIZE 1000
#endif

#ifndef ARRAYLEN
# define ARRAYLEN(x) (sizeof(x)/sizeof((x)[0]))
#endif

#if defined(__linux__) || (__APPLE__)
# define _BLUE_(s) "\x1b[34m" s "\x1b[0m "
#else
# define _BLUE_(s) s " "
#endif

#if defined(__linux__) || (__APPLE__)
# define _RED_(s) "\x1b[31m" s "\x1b[0m "
#else
# define _RED_(s) s " "
#endif

#if defined(__linux__) || (__APPLE__)
# define _GREEN_(s) "\x1b[32m" s "\x1b[0m "
#else
# define _GREEN_(s) s " "
#endif

#if defined(__linux__) || (__APPLE__)
# define _YELLOW_(s) "\x1b[33m" s "\x1b[0m "
#else
# define _YELLOW_(s) s " "
#endif

#if defined(__linux__) || (__APPLE__)
# define _MAGENTA_(s) "\x1b[35m" s "\x1b[0m "
#else
# define _MAGENTA_(s) s " "
#endif

#if defined(__linux__) || (__APPLE__)
# define _CYAN_(s) "\x1b[36m" s "\x1b[0m "
#else
# define _CYAN_(s) s " "
#endif

#ifndef DropField
#define DropField() { \
        UsbCommand c_drop = {CMD_READER_ISO_14443a, {0,0,0}}; clearCommandBuffer(); SendCommand(&c_drop); \
    }
#endif

#ifndef DropFieldEx
#define DropFieldEx(x) { \
        if ( (x) == ECC_CONTACTLESS) { \
            DropField(); \
        } \
    }
#endif

uint8_t g_debugMode;

int ukbhit(void);
void AddLogLine(char *fn, char *data, char *c);
void AddLogHex(char *fn, char *extData, const uint8_t *data, const size_t len);
void AddLogUint64(char *fn, char *data, const uint64_t value);
void AddLogCurrentDT(char *fn);
void FillFileNameByUID(char *filenamePrefix, uint8_t *uid, const char *ext, int uidlen);

// fill buffer from structure [{uint8_t data, size_t length},...]
int FillBuffer(uint8_t *data, size_t maxDataLength, size_t *dataLength, ...);

bool CheckStringIsHEXValue(const char *value);
void hex_to_buffer(const uint8_t *buf, const uint8_t *hex_data, const size_t hex_len,
                   const size_t hex_max_len, const size_t min_str_len, const size_t spaces_between,
                   bool uppercase);

void print_hex(const uint8_t *data, const size_t len);
void print_hex_break(const uint8_t *data, const size_t len, const uint8_t breaks);
char *sprint_hex(const uint8_t *data, const size_t len);
char *sprint_hex_inrow(const uint8_t *data, const size_t len);
char *sprint_hex_inrow_ex(const uint8_t *data, const size_t len, const size_t min_str_len);
char *sprint_hex_inrow_spaces(const uint8_t *data, const size_t len, size_t spaces_between);
char *sprint_bin(const uint8_t *data, const size_t len);
char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks);
char *sprint_hex_ascii(const uint8_t *data, const size_t len);
char *sprint_ascii(const uint8_t *data, const size_t len);
char *sprint_ascii_ex(const uint8_t *data, const size_t len, const size_t min_str_len);

void print_blocks(uint32_t *data, size_t len);

void num_to_bytes(uint64_t n, size_t len, uint8_t *dest);
uint64_t bytes_to_num(uint8_t *src, size_t len);
void num_to_bytebits(uint64_t n, size_t len, uint8_t *dest);
void num_to_bytebitsLSBF(uint64_t n, size_t len, uint8_t *dest);
uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize);
void SwapEndian64ex(const uint8_t *src, const size_t len, const uint8_t blockSize, uint8_t *dest);

int param_getlength(const char *line, int paramnum);
char param_getchar(const char *line, int paramnum);
char param_getchar_indx(const char *line, int indx, int paramnum);
int param_getptr(const char *line, int *bg, int *en, int paramnum);
uint8_t param_get8(const char *line, int paramnum);
uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base);
uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base);
uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base);
uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination);
uint8_t param_isdec(const char *line, int paramnum);
int param_gethex(const char *line, int paramnum, uint8_t *data, int hexcnt);
int param_gethex_ex(const char *line, int paramnum, uint8_t *data, int *hexcnt);
int param_gethex_to_eol(const char *line, int paramnum, uint8_t *data, int maxdatalen, int *datalen);
int param_getstr(const char *line, int paramnum, char *str, size_t buffersize);

int hextobinarray(char *target, char *source);
int hextobinstring(char *target, char *source);
int binarraytohex(char *target, const size_t targetlen, char *source, size_t srclen);
void binarraytobinstring(char *target,  char *source, int length);
uint8_t GetParity(uint8_t *bits, uint8_t type, int length);
void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length);

void xor(unsigned char *dst, unsigned char *src, size_t len);
int32_t le24toh(uint8_t data[3]);

uint32_t PackBits(uint8_t start, uint8_t len, uint8_t *bits);
void rol(uint8_t *data, const size_t len);
uint32_t reflect(uint32_t v, int b);
uint8_t reflect8(uint8_t b); // dedicated 8bit reversal
uint16_t reflect16(uint16_t b); // dedicated 16bit reversal
uint64_t HornerScheme(uint64_t num, uint64_t divider, uint64_t factor);

int num_CPUs(void); // number of logical CPUs

void str_lower(char *s); // converts string to lower case
bool str_startswith(const char *s,  const char *pre);  // check for prefix in string
void strcleanrn(char *buf, size_t len);
void strcreplace(char *buf, size_t len, char from, char to);
char *strmcopy(char *buf);
#endif