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Exiv2
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Exiv2
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Value for string type. More...
#include <value.hpp>
Public Types | |
| typedef std::auto_ptr< StringValue > | AutoPtr |
| Shortcut for a StringValue auto pointer. | |
 Public Types inherited from Exiv2::StringValueBase | |
| typedef std::auto_ptr< StringValueBase > | AutoPtr |
| Shortcut for a StringValueBase auto pointer. | |
| Public Types inherited from Exiv2::Value | |
| typedef std::auto_ptr< Value > | AutoPtr |
| 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 | |
| StringValueBase & | operator= (const StringValueBase &rhs) |
| Assignment operator. | |
| Protected Member Functions inherited from Exiv2::Value | |
| Value & | operator= (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. | |
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.
1.8.14