casacore::HeaderDataUnit Class Reference

base class that defines a HDU More...

#include <hdu.h>

Inheritance diagram for casacore::HeaderDataUnit:

Public Types
enum	HDUErrs {   OK,   NOMEM,   MISSKEY,   BADBITPIX,   NOAXISN,   NOPCOUNT,   NOGCOUNT,   BADPCOUNT,   BADGCOUNT,   NOGROUPS,   BADNAXIS,   BADREC,   BADTYPE,   BADRULES,   BADSIZE,   BADOPER,   BADCONV,   BADIO }
	error handling and error codes that can be returned More...

Public Member Functions
virtual	~HeaderDataUnit ()
Int	dims () const
Int	dim (int n) const
OFF_T	fitsdatasize () const
FITS::ValueType	datatype () const
Int	fitsitemsize () const
Int	localitemsize () const
FITS::HDUType	hdutype () const
int	err () const
int	skip (uInt n)
	skipping one or more HDU's More...
int	skip ()
int	write_hdr (FitsOutput &)
	write the current header More...
ConstFitsKeywordList &	kwlist ()
	Operations on the HDU's keyword list. More...
Vector< String >	kwlist_str (Bool length80=False)
	return the header of the chdu as a vector of String. More...
void	firstkw ()
void	lastkw ()
const FitsKeyword *	nextkw ()
const FitsKeyword *	prevkw ()
const FitsKeyword *	currkw ()
const FitsKeyword *	kw (int n)
const FitsKeyword *	kw (const FITS::ReservedName &n)
const FitsKeyword *	nextkw (FITS::ReservedName &n)
const FitsKeyword *	kw (FITS::ReservedName &n, int i)
const FitsKeyword *	nextkw (FITS::ReservedName &n, int i)
const FitsKeyword *	kw (const char *n)
const FitsKeyword *	nextkw (const char *n)
void	mk (FITS::ReservedName k, Bool v, const char *c=0)
void	mk (FITS::ReservedName k, const char *v=0, const char *c=0)
void	mk (FITS::ReservedName k, Int v, const char *c=0)
void	mk (FITS::ReservedName k, double v, const char *c=0)
void	mk (int n, FITS::ReservedName k, Bool v, const char *c=0)
void	mk (int n, FITS::ReservedName k, const char *v, const char *c=0)
void	mk (int n, FITS::ReservedName k, Int v, const char *c=0)
void	mk (int n, FITS::ReservedName k, double v, const char *c=0)
void	mk (const char *n, Bool v, const char *c=0)
void	mk (const char *n, const char *v=0, const char *c=0)
void	mk (const char *n, Int v, const char *c=0)
void	mk (const char *n, float v, const char *c=0)
void	mk (const char *n, double v, const char *c=0)
void	mk (const char *n, Int r, Int i, const char *c=0)
void	mk (const char *n, float r, float i, const char *c=0)
void	mk (const char *n, double r, double i, const char *c=0)
void	spaces (const char *n=0, const char *c=0)
void	comment (const char *n=0, const char *c=0)
void	history (const char *c=0)
Bool	notnull (double x) const
Bool	notnull (char *s) const
Bool	notnull (Int l) const
int	get_hdr (FITS::HDUType, FitsKeywordList &)
int	read_data (char *, Int)
int	write_data (FitsOutput &, char *, Int)
OFF_T	read_all_data (char *)
int	write_all_data (FitsOutput &, char *)

Static Public Member Functions
static Bool	determine_type (FitsKeywordList &, FITS::HDUType &, FITS::ValueType &, FITSErrorHandler, HDUErrs &)
	Determines the HDU type and the data type Parameterss: keyword list, hdu type, data type, error handler and error status. More...
static Bool	compute_size (FitsKeywordList &, OFF_T &, Int &, FITS::HDUType &, FITS::ValueType &, FITSErrorHandler, HDUErrs &)
	Compute the total size of the data associated with an HDU. More...

Protected Member Functions
	HeaderDataUnit (FitsInput &, FITS::HDUType, FITSErrorHandler errhandler=FITSError::defaultHandler)
	For input – ~ should delete the keyword list: kwflag = 1. More...
	HeaderDataUnit (FitsKeywordList &, FITS::HDUType, FITSErrorHandler errhandler=FITSError::defaultHandler, FitsInput *=0)
	For output – ~ should not delete keyword list: kwflag = 0 07/21/98 AKH Clarification: HeaderDataUnit has a copy of the FitsKeywordList, and should delete it. More...
	HeaderDataUnit (FITS::HDUType, FITSErrorHandler errhandler=FITSError::defaultHandler, FitsInput *=0)
	constructor for objects that write only required keyword to fits file. More...
bool	init_data_unit (FITS::HDUType t)
	for write required keywords only to use. More...
void	posEnd ()
void	errmsg (HDUErrs, const char *)
char *	assign (FITS::ReservedName)
char *	assign (FITS::ReservedName, int)
double	asgdbl (FITS::ReservedName, double)
double	asgdbl (FITS::ReservedName, int, double)

Protected Attributes
FitsKeywordList &	kwlist_
ConstFitsKeywordList	constkwlist_
FitsInput *	fin
FITSErrorHandler	errfn
HDUErrs	err_status
Int	no_dims
Int *	dimn
OFF_T	fits_data_size
	uInt fits_data_size; // size in bytes of total amount of data More...
FITS::ValueType	data_type
Int	fits_item_size
Int	local_item_size
FITS::HDUType	hdu_type
char	pad_char
double	double_null
char	char_null
Int	Int_null

Friends
std::ostream &	operator<< (std::ostream &, HeaderDataUnit &)

Detailed Description

base class that defines a HDU

Synopsis

The class HeaderDataUnit contains what is common to all header-data-units, including the collection of keywords. From this class a number of FITS header-data-units are derived, each of them with their own rich assortment of functions for accessing and manipulating data of specific types. The following inheritence hierarchy illustrates the current derived classes:

HeaderDataUnit
/          | 
/           | 
PrimaryArray   ExtensionHeaderDataUnit
/  |  \                                   | 
/   |   \                             | 
PrimaryGroup    |   ImageExtension                | 
|                                 | 
PrimaryTable                   BinaryTableExtension
/
/
AsciiTableExtension

Definition at line 71 of file hdu.h.

Member Enumeration Documentation

enum casacore::HeaderDataUnit::HDUErrs

error handling and error codes that can be returned

Enumerator
OK
NOMEM
MISSKEY
BADBITPIX
NOAXISN
NOPCOUNT
NOGCOUNT
BADPCOUNT
BADGCOUNT
NOGROUPS
BADNAXIS
BADREC
BADTYPE
BADRULES
BADSIZE
BADOPER
BADCONV
BADIO

Definition at line 86 of file hdu.h.

Constructor & Destructor Documentation

virtual casacore::HeaderDataUnit::~HeaderDataUnit ( )

virtual

casacore::HeaderDataUnit::HeaderDataUnit ( FitsInput &  , FITS::HDUType  , FITSErrorHandler  errhandler = FITSError::defaultHandler  )

protected

For input – ~ should delete the keyword list: kwflag = 1.

casacore::HeaderDataUnit::HeaderDataUnit ( FitsKeywordList &  , FITS::HDUType  , FITSErrorHandler  errhandler = FITSError::defaultHandler, FitsInput *  = 0  )

protected

For output – ~ should not delete keyword list: kwflag = 0 07/21/98 AKH Clarification: HeaderDataUnit has a copy of the FitsKeywordList, and should delete it.

The kwflag comments above are not important now.

casacore::HeaderDataUnit::HeaderDataUnit ( FITS::HDUType  , FITSErrorHandler  errhandler = FITSError::defaultHandler, FitsInput *  = 0  )

protected

constructor for objects that write only required keyword to fits file.

the write method to call by these object should be those for the specific hdu, such as write_bintbl_hdr().

Member Function Documentation

double casacore::HeaderDataUnit::asgdbl ( FITS::ReservedName  , double    )

protected

double casacore::HeaderDataUnit::asgdbl ( FITS::ReservedName  , int  , double    )

protected

char* casacore::HeaderDataUnit::assign ( FITS::ReservedName  )

protected

char* casacore::HeaderDataUnit::assign ( FITS::ReservedName  , int    )

protected

void casacore::HeaderDataUnit::comment ( const char *  n = 0, const char *  c = 0  )

inline

Definition at line 259 of file hdu.h.

References casacore::FitsKeywordList::comment(), kwlist_, and posEnd().

static Bool casacore::HeaderDataUnit::compute_size ( FitsKeywordList &  , OFF_T &  , Int &  , FITS::HDUType &  , FITS::ValueType &  , FITSErrorHandler  , HDUErrs &    )

static

Compute the total size of the data associated with an HDU.

The number of dimensions is also determined. This routine assumes that hdu type has been appropriately set, but it may be changed in the process. Data type is also determined. Returns False if a serious error was detected, otherwise True

const FitsKeyword* casacore::HeaderDataUnit::currkw ( )

inline

Definition at line 128 of file hdu.h.

References casacore::FitsKeywordList::curr(), and kwlist_.

FITS::ValueType casacore::HeaderDataUnit::datatype ( ) const

inline

Definition at line 79 of file hdu.h.

References data_type.

static Bool casacore::HeaderDataUnit::determine_type ( FitsKeywordList &  , FITS::HDUType &  , FITS::ValueType &  , FITSErrorHandler  , HDUErrs &    )

static

Determines the HDU type and the data type Parameterss: keyword list, hdu type, data type, error handler and error status.

Returns False if a serious error was detected, otherwise True

Int casacore::HeaderDataUnit::dim ( int  n ) const

inline

Definition at line 77 of file hdu.h.

References dimn, and no_dims.

Referenced by casacore::MSPrimaryTableHolder::dim(), casacore::MSPrimaryGroupHolder::dim(), and casacore::BinaryTableExtension::nrows().

Int casacore::HeaderDataUnit::dims ( ) const

inline

Definition at line 76 of file hdu.h.

References no_dims.

Referenced by casacore::MSPrimaryTableHolder::dims(), and casacore::MSPrimaryGroupHolder::dims().

int casacore::HeaderDataUnit::err ( ) const

inline

Definition at line 90 of file hdu.h.

References err_status.

void casacore::HeaderDataUnit::errmsg ( HDUErrs  , const char *    )

protected

void casacore::HeaderDataUnit::firstkw ( )

inline

Definition at line 124 of file hdu.h.

References casacore::FitsKeywordList::first(), and kwlist_.

OFF_T casacore::HeaderDataUnit::fitsdatasize ( ) const

inline

Definition at line 78 of file hdu.h.

References fits_data_size.

Int casacore::HeaderDataUnit::fitsitemsize ( ) const

inline

Definition at line 80 of file hdu.h.

References fits_item_size.

int casacore::HeaderDataUnit::get_hdr	(	FITS::HDUType	,
		FitsKeywordList &
	)

FITS::HDUType casacore::HeaderDataUnit::hdutype ( ) const

inline

Definition at line 82 of file hdu.h.

References hdu_type.

void casacore::HeaderDataUnit::history ( const char *  c = 0 )

inline

Definition at line 261 of file hdu.h.

References casacore::FitsKeywordList::history(), kwlist_, and posEnd().

bool casacore::HeaderDataUnit::init_data_unit ( FITS::HDUType  t )

protected

for write required keywords only to use.

const FitsKeyword* casacore::HeaderDataUnit::kw ( int  n )

inline

Definition at line 129 of file hdu.h.

References kwlist_.

Referenced by casacore::MSPrimaryTableHolder::kw(), and casacore::MSPrimaryGroupHolder::kw().

const FitsKeyword* casacore::HeaderDataUnit::kw ( const FITS::ReservedName &  n )

inline

Definition at line 131 of file hdu.h.

References kwlist_.

const FitsKeyword* casacore::HeaderDataUnit::kw ( FITS::ReservedName &  n, int  i  )

inline

Definition at line 135 of file hdu.h.

References kwlist_.

const FitsKeyword* casacore::HeaderDataUnit::kw ( const char *  n )

inline

Definition at line 139 of file hdu.h.

References kwlist_.

ConstFitsKeywordList& casacore::HeaderDataUnit::kwlist ( )

inline

Operations on the HDU's keyword list.

Definition at line 120 of file hdu.h.

References constkwlist_.

Referenced by casacore::MSPrimaryTableHolder::kwlist(), and casacore::MSPrimaryGroupHolder::kwlist().

Vector<String> casacore::HeaderDataUnit::kwlist_str

(

Bool

length80 = False

)

return the header of the chdu as a vector of String.

You can force the strings to be length 80 (padded with spaces)

void casacore::HeaderDataUnit::lastkw ( )

inline

Definition at line 125 of file hdu.h.

References kwlist_, and casacore::FitsKeywordList::last().

Int casacore::HeaderDataUnit::localitemsize ( ) const

inline

Definition at line 81 of file hdu.h.

References local_item_size.

void casacore::HeaderDataUnit::mk ( FITS::ReservedName  k, Bool  v, const char *  c = 0  )

inline

Definition at line 225 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( FITS::ReservedName  k, const char *  v = 0, const char *  c = 0  )

inline

Definition at line 227 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( FITS::ReservedName  k, Int  v, const char *  c = 0  )

inline

Definition at line 229 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( FITS::ReservedName  k, double  v, const char *  c = 0  )

inline

Definition at line 231 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( int  n, FITS::ReservedName  k, Bool  v, const char *  c = 0  )

inline

Definition at line 233 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( int  n, FITS::ReservedName  k, const char *  v, const char *  c = 0  )

inline

Definition at line 235 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( int  n, FITS::ReservedName  k, Int  v, const char *  c = 0  )

inline

Definition at line 237 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( int  n, FITS::ReservedName  k, double  v, const char *  c = 0  )

inline

Definition at line 239 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( const char *  n, Bool  v, const char *  c = 0  )

inline

Definition at line 241 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( const char *  n, const char *  v = 0, const char *  c = 0  )

inline

Definition at line 243 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( const char *  n, Int  v, const char *  c = 0  )

inline

Definition at line 245 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( const char *  n, float  v, const char *  c = 0  )

inline

Definition at line 247 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( const char *  n, double  v, const char *  c = 0  )

inline

Definition at line 249 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( const char *  n, Int  r, Int  i, const char *  c = 0  )

inline

Definition at line 251 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( const char *  n, float  r, float  i, const char *  c = 0  )

inline

Definition at line 253 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

void casacore::HeaderDataUnit::mk ( const char *  n, double  r, double  i, const char *  c = 0  )

inline

Definition at line 255 of file hdu.h.

References kwlist_, casacore::FitsKeywordList::mk(), and posEnd().

const FitsKeyword* casacore::HeaderDataUnit::nextkw ( )

inline

Definition at line 126 of file hdu.h.

References kwlist_, and casacore::FitsKeywordList::next().

Referenced by casacore::MSPrimaryTableHolder::nextkw(), and casacore::MSPrimaryGroupHolder::nextkw().

const FitsKeyword* casacore::HeaderDataUnit::nextkw ( FITS::ReservedName &  n )

inline

Definition at line 133 of file hdu.h.

References kwlist_, and casacore::FitsKeywordList::next().

const FitsKeyword* casacore::HeaderDataUnit::nextkw ( FITS::ReservedName &  n, int  i  )

inline

Definition at line 137 of file hdu.h.

References kwlist_, and casacore::FitsKeywordList::next().

const FitsKeyword* casacore::HeaderDataUnit::nextkw ( const char *  n )

inline

Definition at line 140 of file hdu.h.

References kwlist_, and casacore::FitsKeywordList::next().

Bool casacore::HeaderDataUnit::notnull ( double  x ) const

inline

Definition at line 162 of file hdu.h.

References double_null, casacore::False, and casacore::True.

Bool casacore::HeaderDataUnit::notnull ( char *  s ) const

inline

Definition at line 163 of file hdu.h.

References casacore::False, and casacore::True.

Bool casacore::HeaderDataUnit::notnull ( Int  l ) const

inline

Definition at line 164 of file hdu.h.

References casacore::False, Int_null, and casacore::True.

void casacore::HeaderDataUnit::posEnd ( )

protected

Referenced by comment(), history(), mk(), and spaces().

const FitsKeyword* casacore::HeaderDataUnit::prevkw ( )

inline

Definition at line 127 of file hdu.h.

References kwlist_, and casacore::FitsKeywordList::prev().

OFF_T casacore::HeaderDataUnit::read_all_data

(

char *

)

int casacore::HeaderDataUnit::read_data	(	char *	,
		Int
	)

Referenced by casacore::ExtensionHeaderDataUnit::read().

int casacore::HeaderDataUnit::skip

(

uInt

n

)

skipping one or more HDU's

int casacore::HeaderDataUnit::skip

(

)

void casacore::HeaderDataUnit::spaces ( const char *  n = 0, const char *  c = 0  )

inline

Definition at line 257 of file hdu.h.

References kwlist_, posEnd(), and casacore::FitsKeywordList::spaces().

int casacore::HeaderDataUnit::write_all_data	(	FitsOutput &	,
		char *
	)

int casacore::HeaderDataUnit::write_data	(	FitsOutput &	,
		char *	,
		Int
	)

Referenced by casacore::ExtensionHeaderDataUnit::write().

int casacore::HeaderDataUnit::write_hdr

(

FitsOutput &

)

write the current header

Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  o, HeaderDataUnit &  h  )

friend

Definition at line 223 of file hdu.h.

Member Data Documentation

char casacore::HeaderDataUnit::char_null

protected

Definition at line 212 of file hdu.h.

ConstFitsKeywordList casacore::HeaderDataUnit::constkwlist_

protected

Definition at line 187 of file hdu.h.

Referenced by kwlist().

FITS::ValueType casacore::HeaderDataUnit::data_type

protected

Definition at line 199 of file hdu.h.

Referenced by datatype().

Int* casacore::HeaderDataUnit::dimn

protected

Definition at line 196 of file hdu.h.

Referenced by dim().

double casacore::HeaderDataUnit::double_null

protected

Definition at line 211 of file hdu.h.

Referenced by notnull().

HDUErrs casacore::HeaderDataUnit::err_status

protected

Definition at line 192 of file hdu.h.

Referenced by err().

FITSErrorHandler casacore::HeaderDataUnit::errfn

protected

Definition at line 191 of file hdu.h.

FitsInput* casacore::HeaderDataUnit::fin

protected

Definition at line 190 of file hdu.h.

OFF_T casacore::HeaderDataUnit::fits_data_size

protected

uInt fits_data_size; // size in bytes of total amount of data

Definition at line 198 of file hdu.h.

Referenced by fitsdatasize().

Int casacore::HeaderDataUnit::fits_item_size

protected

Definition at line 200 of file hdu.h.

Referenced by fitsitemsize().

FITS::HDUType casacore::HeaderDataUnit::hdu_type

protected

Definition at line 202 of file hdu.h.

Referenced by hdutype().

Int casacore::HeaderDataUnit::Int_null

protected

Definition at line 213 of file hdu.h.

Referenced by notnull().

FitsKeywordList& casacore::HeaderDataUnit::kwlist_

protected

Definition at line 186 of file hdu.h.

Referenced by comment(), currkw(), firstkw(), history(), kw(), lastkw(), mk(), nextkw(), casacore::operator<<(), prevkw(), and spaces().

Int casacore::HeaderDataUnit::local_item_size

protected

Definition at line 201 of file hdu.h.

Referenced by localitemsize().

Int casacore::HeaderDataUnit::no_dims

protected

Definition at line 195 of file hdu.h.

Referenced by dim(), and dims().

char casacore::HeaderDataUnit::pad_char

protected

Definition at line 203 of file hdu.h.

---

The documentation for this class was generated from the following file:

• casa/casacore/fits/FITS/hdu.h