bufrnoaa_utils.c File Reference

File with some routines for bufrnoaa binary. More...

#include "bufrnoaa.h"

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Functions
int	is_bufr (unsigned char *b)
	checks if an unsigned char from an array is the first char of 'BUFR' More...
int	is_head (unsigned char *b)
	checks if an unsigned char from an array is the first char of '****' More...
int	is_head_custom (unsigned char *b, char mark)
	checks if an unsigned char from an array is the first char of repeated mark char four times More...
int	is_endb (unsigned char *b)
	checks if an unsigned char from an array is the first char of '7777' More...
int	timeval_substract (struct timeval *result, struct timeval *x, struct timeval *y)
	Subtract the ‘struct timeval’ values X and Y, storing the result in RESULT. More...
int	bufr_is_selected (char *name)
	returns 1 if selected message 0 otherwise More...
int	date_mtime_from_stat (char *date, struct stat *st)
	get a string with date and time from a struct stat More...
int	mtime_from_stat (char *filename, struct stat *st)
	modifies a file update time from a struct stat More...

Detailed Description

File with some routines for bufrnoaa binary.

Definition in file bufrnoaa_utils.c.

Function Documentation

bufr_is_selected()

int bufr_is_selected

(

char *

name

)

returns 1 if selected message 0 otherwise

Parameters

name	string with name to check

Definition at line 124 of file bufrnoaa_utils.c.

{
  if ( strlen ( SEL ) == 0 )
    return 0;
  if ( strchr ( SEL, name[1] ) == NULL )
    return 0;
  if ( name[1] == 'S' )
    {
      if ( strlen ( SELS ) == 0 )
        return 1;
      else if ( strchr ( SELS, name[2] ) == NULL )
        return 0;
    }
 
  if ( name[1] == 'O' )
    {
      if ( strlen ( SELO ) == 0 )
        return 1;
      else if ( strchr ( SELO, name[2] ) == NULL )
        return 0;
    }
 
  if ( name[1] == 'U' )
    {
      if ( strlen ( SELU ) == 0 )
        return 1;
      else if ( strchr ( SELU, name[2] ) == NULL )
        return 0;
    }
 
  return 1;
}

References SELO, SELS, and SELU.

Referenced by main().

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date_mtime_from_stat()

int date_mtime_from_stat	(	char *	date,
		struct stat *	st
	)

get a string with date and time from a struct stat

Parameters

date	string wuth the result
st	pointer to a strucr stat

Definition at line 163 of file bufrnoaa_utils.c.

{
  struct tm tim;
  memset ( &tim, 0, sizeof ( tim ) );
  gmtime_r ( & ( st->st_mtime ), &tim );
  strftime ( date, 16, "%Y%m%d%H%M%S", &tim );
  return 1;
}

Referenced by main().

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is_bufr()

int is_bufr

(

unsigned char *

b

)

checks if an unsigned char from an array is the first char of 'BUFR'

Parameters

b	pointer to unsigned char to check

Returns 1 if success, 0 othewise

Definition at line 33 of file bufrnoaa_utils.c.

{
  if ( b[0] == 'R' && b[1] == 'F' && b[2] == 'U' && b[3] == 'B' )
    return 1;
  return 0;
}

Referenced by main().

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is_endb()

int is_endb

(

unsigned char *

b

)

checks if an unsigned char from an array is the first char of '7777'

Parameters

b	pointer to unsigned char to check

Returns 1 if success, 0 othewise

Definition at line 76 of file bufrnoaa_utils.c.

{
  if ( b[0] == '7' && b[1] == '7' && b[2] == '7' && b[3] == '7' )
    return 1;
  return 0;
}

Referenced by main().

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is_head()

int is_head

(

unsigned char *

b

)

checks if an unsigned char from an array is the first char of '****'

Parameters

b	pointer to unsigned char to check

Returns 1 if success, 0 othewise

Definition at line 47 of file bufrnoaa_utils.c.

{
  if ( b[0] == '*' && b[1] == '*' && b[2] == '*' && b[3] == '*' )
    return 1;
  return 0;
}

is_head_custom()

int is_head_custom	(	unsigned char *	b,
		char	mark
	)

checks if an unsigned char from an array is the first char of repeated mark char four times

Parameters

b	pointer to unsigned char to check
mark	char to be found repeated four times since b Returns 1 if success, 0 othewise

Definition at line 61 of file bufrnoaa_utils.c.

{
  if ( b[0] == mark && b[1] == mark && b[2] == mark && b[3] == mark )
    return 1;
  return 0;
}

Referenced by main().

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mtime_from_stat()

int mtime_from_stat	(	char *	filename,
		struct stat *	st
	)

modifies a file update time from a struct stat

Parameters

filename	string with the pathname of file to modify
st	pointer to a struct stat as reference

Definition at line 178 of file bufrnoaa_utils.c.

{
  struct utimbuf ut;
  ut.modtime = st->st_mtime;
  ut.actime = st->st_mtime;
  utime ( filename, &ut );
  return 1;
}

Referenced by main().

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timeval_substract()

int timeval_substract	(	struct timeval *	result,
		struct timeval *	x,
		struct timeval *	y
	)

Subtract the ‘struct timeval’ values X and Y, storing the result in RESULT.

Parameters

result	pointer to a struct timeval where to set the result
x	pointer to struct timeval as X in (X - Y)
y	pointer to struct timeval as Y in (X - Y)

Return 1 if the difference is negative, otherwise 0.

Definition at line 93 of file bufrnoaa_utils.c.

{
  /* Perform the carry for the later subtraction by updating Y. */
  if ( x->tv_usec < y->tv_usec )
    {
      int nsec = ( y->tv_usec - x->tv_usec ) / 1000000 + 1;
      y->tv_usec -= 1000000 * nsec;
      y->tv_sec += nsec;
    }
  if ( x->tv_usec - y->tv_usec > 1000000 )
    {
      int nsec = ( x->tv_usec - y->tv_usec ) / 1000000;
      y->tv_usec += 1000000 * nsec;
      y->tv_sec -= nsec;
    }
 
  /* Compute the time remaining to wait.
     `tv_usec' is certainly positive. */
  result->tv_sec = x->tv_sec - y->tv_sec;
  result->tv_usec = x->tv_usec - y->tv_usec;
 
  /* Return 1 if result is negative. */
  return x->tv_sec < y->tv_sec;
}

Referenced by main().

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