/** @file
  Redfish CRT wrapper functions.

  Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
  (C) Copyright 2021 Hewlett Packard Enterprise Development LP<BR>

    SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef REDFISH_CRT_LIB_H_
#define REDFISH_CRT_LIB_H_

#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/PrintLib.h>

#define MAX_STRING_SIZE  0x10000000

// Minimum value for an object of type long long int.
#define LLONG_MIN  MIN_INT64

// Maximum value for an object of type long long int.
#define LLONG_MAX  MAX_INT64

// We dont support double on edk2
#define HUGE_VAL  0

#if defined (MDE_CPU_X64) || defined (MDE_CPU_AARCH64) || defined (MDE_CPU_RISCV64)
//
// With GCC we would normally use SIXTY_FOUR_BIT_LONG, but MSVC needs
// SIXTY_FOUR_BIT, because 'long' is 32-bit and only 'long long' is
// 64-bit. Since using 'long long' works fine on GCC too, just do that.
//
#define SIXTY_FOUR_BIT
#elif defined (MDE_CPU_IA32) || defined (MDE_CPU_ARM) || defined (MDE_CPU_EBC)
#define THIRTY_TWO_BIT
#endif

//
// Map all va_xxxx elements to VA_xxx defined in MdePkg/Include/Base.h
//
#if !defined (__CC_ARM) // if va_list is not already defined
#define va_list   VA_LIST
#define va_arg    VA_ARG
#define va_start  VA_START
#define va_end    VA_END
#else // __CC_ARM
#define va_start(Marker, Parameter)  __va_start(Marker, Parameter)
#define va_arg(Marker, TYPE)         __va_arg(Marker, TYPE)
#define va_end(Marker)               ((void)0)
#endif

//
// Definitions for global constants used by CRT library routines
//
#define INT_MAX    MAX_INT32          /* Maximum (signed) int value */
#define LONG_MAX   0X7FFFFFFFL        /* max value for a long */
#define LONG_MIN   (-LONG_MAX-1)      /* min value for a long */
#define ULONG_MAX  0xFFFFFFFF         /* Maximum unsigned long value */
#define CHAR_BIT   8                  /* Number of bits in a char */

// Maximum value for an object of type unsigned long long int.
#define ULLONG_MAX  0xFFFFFFFFFFFFFFFFULL // 2^64 - 1
// Maximum value for an object of type unsigned char.
#define UCHAR_MAX  255   // 2^8 - 1

//
// Basic types mapping
//
typedef UINTN   size_t;
typedef INTN    ssize_t;
typedef INT32   time_t;
typedef UINT8   __uint8_t;
typedef UINT8   sa_family_t;
typedef UINT32  uid_t;
typedef UINT32  gid_t;
typedef INT32   int32_t;
typedef UINT32  uint32_t;
typedef UINT16  uint16_t;
typedef UINT8   uint8_t;
typedef enum {
  false, true
} bool;

//
// File operations are not required for EFI building,
// so FILE is mapped to VOID * to pass build
//
typedef VOID *FILE;

/**
  This is the Redfish version of CRT snprintf function, this function replaces "%s" to
  "%a" before invoking AsciiSPrint(). That is becasue "%s" is unicode base on edk2
  environment however "%s" is ascii code base on snprintf().
  See definitions of AsciiSPrint() for the details.

  @param  StartOfBuffer   A pointer to the output buffer for the produced Null-terminated
                          ASCII string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    A Null-terminated ASCII format string.
  @param  ...             Variable argument list whose contents are accessed based on the
                          format string specified by FormatString.

  @return The number of ASCII characters in the produced output buffer not including the
          Null-terminator. Zero means no string is produced or the error happens.

**/
UINTN
EFIAPI
RedfishAsciiSPrint (
  OUT CHAR8        *StartOfBuffer,
  IN  UINTN        BufferSize,
  IN  CONST CHAR8  *FormatString,
  ...
  );

/**
  This is the Redfish version of CRT vsnprintf function, this function replaces "%s" to
  "%a" before invoking AsciiVSPrint(). That is because "%s" is unicode base on edk2
  environment however "%s" is ascii code base on vsnprintf().
  See definitions of AsciiVSPrint() for the details.

  @param  StartOfBuffer   A pointer to the output buffer for the produced Null-terminated
                          ASCII string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    A Null-terminated ASCII format string.
  @param  Marker          VA_LIST marker for the variable argument list.

  @return The number of ASCII characters in the produced output buffer not including the
          Null-terminator.

**/
UINTN
EFIAPI
RedfishAsciiVSPrint (
  OUT CHAR8        *StartOfBuffer,
  IN  UINTN        BufferSize,
  IN  CONST CHAR8  *FormatString,
  IN  VA_LIST      Marker
  );

//
// Global variables
//
extern int   errno;
extern FILE  *stderr;

//
// Function prototypes of CRT Library routines
//
void           *
malloc     (
  size_t
  );

void           *
realloc    (
  void *,
  size_t
  );

void           *
calloc     (
  size_t  Num,
  size_t  Size
  );

void
free        (
  void *
  );

int
isdigit     (
  int
  );

int
isspace     (
  int
  );

int
tolower     (
  int
  );

int
isupper     (
  int
  );

int
isxdigit    (
  int
  );

int
isalnum     (
  int
  );

int
strncmp     (
  const char *,
  const char *,
  size_t
  );

int
strncasecmp (
  const char *,
  const char *,
  size_t
  );

char           *
strrchr    (
  const char *,
  int
  );

unsigned long
strtoul     (
  const char *,
  char **,
  int
  );

long
strtol      (
  const char *,
  char **,
  int
  );

char           *
strerror   (
  int
  );

size_t
strspn      (
  const char *,
  const char *
  );

char *
strdup      (
  const char  *str
  );

char *
strpbrk     (
  const char  *s1,
  const char  *s2
  );

unsigned long long
strtoull (
  const char  *nptr,
  char        **endptr,
  int         base
  );

long long
strtoll     (
  const char  *nptr,
  char        **endptr,
  int         base
  );

long
strtol      (
  const char  *nptr,
  char        **endptr,
  int         base
  );

double
strtod      (
  const char *__restrict  nptr,
  char **__restrict       endptr
  );

size_t
strcspn     (
  const char *,
  const char *
  );

int
printf      (
  const char *,
  ...
  );

int
sscanf      (
  const char *,
  const char *,
  ...
  );

FILE           *
fopen      (
  const char *,
  const char *
  );

size_t
fread       (
  void *,
  size_t,
  size_t,
  FILE *
  );

size_t
fwrite      (
  const void *,
  size_t,
  size_t,
  FILE *
  );

int
fclose      (
  FILE *
  );

int
fprintf     (
  FILE *,
  const char *,
  ...
  );

int
fgetc       (
  FILE  *_File
  );

uid_t
getuid      (
  void
  );

uid_t
geteuid     (
  void
  );

gid_t
getgid      (
  void
  );

gid_t
getegid     (
  void
  );

void
qsort       (
  void *,
  size_t,
  size_t,
  int (*)(const void *, const void *)
  );

char           *
getenv     (
  const char *
  );

#if defined (__GNUC__) && (__GNUC__ >= 2)
void
abort       (
  void
  ) __attribute__ ((__noreturn__));

#else
void
abort       (
  void
  );

#endif
int
toupper     (
  int
  );

int
Digit2Val   (
  int
  );

time_t
time        (
  time_t *
  );

//
// Macros that directly map functions to BaseLib, BaseMemoryLib, and DebugLib functions
//
#define strcmp  AsciiStrCmp
#define memcpy(dest, source, count)                   CopyMem(dest,source,(UINTN)(count))
#define memset(dest, ch, count)                       SetMem(dest,(UINTN)(count),(UINT8)(ch))
#define memchr(buf, ch, count)                        ScanMem8(buf,(UINTN)(count),(UINT8)ch)
#define memcmp(buf1, buf2, count)                     (int)(CompareMem(buf1,buf2,(UINTN)(count)))
#define memmove(dest, source, count)                  CopyMem(dest,source,(UINTN)(count))
#define strlen(str)                                   (size_t)(AsciiStrnLenS(str,MAX_STRING_SIZE))
#define strcpy(strDest, strSource)                    AsciiStrCpyS(strDest,(strlen(strSource)+1),strSource)
#define strncpy(strDest, strSource, count)            AsciiStrnCpyS(strDest,(UINTN)count,strSource,(UINTN)count)
#define strncpys(strDest, DestLen, strSource, count)  AsciiStrnCpyS(strDest,DestLen,strSource,(UINTN)count)
#define strcat(strDest, strSource)                    AsciiStrCatS(strDest,(strlen(strSource)+strlen(strDest)+1),strSource)
#define strchr(str, ch)                               ScanMem8((VOID *)(str),AsciiStrSize(str),(UINT8)ch)
#define strcasecmp(str1, str2)                        (int)AsciiStriCmp(str1,str2)
#define strstr(s1, s2)                                AsciiStrStr(s1,s2)
#define snprintf(buf, len, ...)                       RedfishAsciiSPrint(buf,len,__VA_ARGS__)
#define vsnprintf(buf, len, format, marker)           RedfishAsciiVSPrint((buf),(len),(format),(marker))
#define assert(expression)                            ASSERT(expression)
#define offsetof(type, member)                        OFFSET_OF(type,member)

#define EOF  (-1)

extern int  errno;

#define ERANGE  34                 /* 34   Result too large */

#endif