Exiv2::DateValue Class Reference
Value for simple ISO 8601 dates More...
#include <value.hpp>
Inheritance diagram for Exiv2::DateValue:
Classes | |
| struct | Date |
| Simple Date helper structure. More... | |
Public Types | |
| typedef std::auto_ptr< DateValue > | AutoPtr |
| Shortcut for a DateValue auto pointer. | |
 Public Types inherited from Exiv2::Value | |
| typedef std::auto_ptr< Value > | AutoPtr |
| Shortcut for a Value auto pointer. | |
Public Member Functions | |
Creators | |
| DateValue () | |
| Default constructor. | |
| DateValue (int year, int month, int day) | |
| Constructor. | |
| virtual | ~DateValue () |
| Virtual destructor. | |
Manipulators | |
| virtual int | read (const byte *buf, long len, ByteOrder byteOrder=invalidByteOrder) |
| Read the value from a character buffer. More... | |
| virtual int | read (const std::string &buf) |
| Set the value to that of the string buf. More... | |
| void | setDate (const Date &src) |
| Set the date. | |
| 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. | |
Accessors | |
| AutoPtr | clone () const |
| virtual long | copy (byte *buf, ByteOrder byteOrder=invalidByteOrder) const |
| Write value to a character data buffer. More... | |
| virtual const Date & | getDate () const |
| Return date struct containing date information. | |
| 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 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). | |
| virtual long | toLong (long n=0) const |
| Return the value as a UNIX calender time converted to long. | |
| virtual float | toFloat (long n=0) const |
| Return the value as a UNIX calender time converted to float. | |
| virtual Rational | toRational (long n=0) const |
| Return the value as a UNIX calender time converted to Rational. | |
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... | |
| 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. | |
Detailed Description
Value for simple ISO 8601 dates
This class is limited to parsing simple date strings in the ISO 8601 format CCYYMMDD (century, year, month, day).
Member Function Documentation
◆ copy()
|
virtual |
Write value to a character data buffer.
The user must ensure that the buffer has enough memory. Otherwise the call results in undefined behaviour.
- Note
- The byte order is required by the interface but not used by this method, so just use the default.
- Parameters
-
buf Data buffer to write to. byteOrder Byte order. Not used.
- Returns
- Number of characters written.
Implements Exiv2::Value.
◆ read() [1/2]
|
virtual |
Read the value from a character buffer.
- Note
- The byte order is required by the interface but not used by this method, so just use the default.
- Parameters
-
buf Pointer to the data buffer to read from len Number of bytes in the data buffer byteOrder Byte order. Not needed.
- Returns
- 0 if successful
1 in case of an unsupported date format
Implements Exiv2::Value.
◆ read() [2/2]
|
virtual |
Set the value to that of the string buf.
- Parameters
-
buf String containing the date
- Returns
- 0 if successful
1 in case of an unsupported date format
Implements Exiv2::Value.
The documentation for this class was generated from the following file:
- value.hpp