Exiv2::StringValue Class Reference

Value for string type. More...

#include <value.hpp>

Inheritance diagram for Exiv2::StringValue:

Public Types

typedef std::auto_ptr< StringValueAutoPtr
 Shortcut for a StringValue auto pointer.
 
- Public Types inherited from Exiv2::StringValueBase
typedef std::auto_ptr< StringValueBaseAutoPtr
 Shortcut for a StringValueBase auto pointer.
 
- Public Types inherited from Exiv2::Value
typedef std::auto_ptr< ValueAutoPtr
 Shortcut for a Value auto pointer.
 

Public Member Functions

Creators
 StringValue ()
 Default constructor.
 
 StringValue (const std::string &buf)
 Constructor.
 
virtual ~StringValue ()
 Virtual destructor.
 
Accessors
AutoPtr clone () const
 
- Public Member Functions inherited from Exiv2::StringValueBase
 StringValueBase (TypeId typeId)
 Constructor for subclasses.
 
 StringValueBase (TypeId typeId, const std::string &buf)
 Constructor for subclasses.
 
 StringValueBase (const StringValueBase &rhs)
 Copy constructor.
 
virtual ~StringValueBase ()
 Virtual destructor.
 
virtual int read (const std::string &buf)
 Read the value from buf. This default implementation uses buf as it is.
 
virtual int read (const byte *buf, long len, ByteOrder byteOrder=invalidByteOrder)
 Read the value from a character buffer. More...
 
AutoPtr clone () const
 
virtual long copy (byte *buf, ByteOrder byteOrder=invalidByteOrder) const
 Write value to a character data buffer. More...
 
virtual long count () const
 Return the number of components of the value.
 
virtual long size () const
 Return the size of the value in bytes.
 
virtual long toLong (long n=0) const
 Convert the n-th component of the value to a long. The behaviour of this method may be undefined if there is no n-th component. More...
 
virtual float toFloat (long n=0) const
 Convert the n-th component of the value to a float. The behaviour of this method may be undefined if there is no n-th component. More...
 
virtual Rational toRational (long n=0) const
 Convert the n-th component of the value to a Rational. The behaviour of this method may be undefined if there is no n-th component. More...
 
virtual std::ostream & write (std::ostream &os) const
 Write the value to an output stream. You do not usually have to use this function; it is used for the implementation of the output operator for Value, operator<<(std::ostream &os, const Value &value).
 
- Public Member Functions inherited from Exiv2::Value
 Value (TypeId typeId)
 Constructor, taking a type id to initialize the base class with.
 
virtual ~Value ()
 Virtual destructor.
 
virtual int setDataArea (const byte *buf, long len)
 Set the data area, if the value has one by copying (cloning) the buffer pointed to by buf. More...
 
TypeId typeId () const
 Return the type identifier (Exif data format type).
 
AutoPtr clone () const
 Return an auto-pointer to a copy of itself (deep copy). The caller owns this copy and the auto-pointer ensures that it will be deleted.
 
std::string toString () const
 Return the value as a string. Implemented in terms of write(std::ostream& os) const of the concrete class.
 
virtual std::string toString (long n) const
 Return the n-th component of the value as a string. The default implementation returns toString(). The behaviour of this method may be undefined if there is no n-th component.
 
virtual long sizeDataArea () const
 Return the size of the data area, 0 if there is none.
 
virtual DataBuf dataArea () const
 Return a copy of the data area if the value has one. The caller owns this copy and DataBuf ensures that it will be deleted. More...
 
bool ok () const
 Check the ok status indicator. After a to<Type> conversion, this indicator shows whether the conversion was successful.
 

Additional Inherited Members

- Static Public Member Functions inherited from Exiv2::Value
static AutoPtr create (TypeId typeId)
 A (simple) factory to create a Value type. More...
 
- Public Attributes inherited from Exiv2::StringValueBase
std::string value_
 Stores the string value.
 
- Protected Member Functions inherited from Exiv2::StringValueBase
StringValueBaseoperator= (const StringValueBase &rhs)
 Assignment operator.
 
- Protected Member Functions inherited from Exiv2::Value
Valueoperator= (const Value &rhs)
 Assignment operator. Protected so that it can only be used by subclasses but not directly.
 
- Protected Attributes inherited from Exiv2::Value
bool ok_
 Indicates the status of the previous to<Type> conversion.
 

Detailed Description

Value for string type.

This can be a plain Ascii string or a multipe byte encoded string. It is left to caller to decode and encode the string to and from readable text if that is required.

Examples:
iptceasy.cpp.

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