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zipios::CollectionCollection(3) Library Functions Manual zipios::CollectionCollection(3)

NAME

zipios::CollectionCollection -

SYNOPSIS

#include <collcoll.h>
Inherits zipios::FileCollection.

Public Member Functions


CollectionCollection ()
 
Constructor. CollectionCollection (const CollectionCollection &src)
 
Copy constructor. const CollectionCollection & operator= (const CollectionCollection &src)
 
Copy assignment operator. bool addCollection (const FileCollection &collection)
 
bool addCollection (FileCollection *collection)
 
Adds the collection pointed to by collection. virtual void close ()
 
Closes the FileCollection. virtual ConstEntries entries () const
 
virtual ConstEntryPointer getEntry (const string &name, MatchPath matchpath=MATCH) const
 
virtual istream * getInputStream (const ConstEntryPointer &entry)
 
virtual istream * getInputStream (const string &entry_name, MatchPath matchpath=MATCH)
 
Returns a pointer to an opened istream for the specified entry name. virtual int size () const
 
Returns the number in entries in all collections kept by the CollectionCollection object. virtual FileCollection * clone () const
 
Create a heap allocated clone of the object this method is called for.

Static Public Member Functions


static CollectionCollection & inst ()
 

Protected Member Functions


void getEntry (const string &name, ConstEntryPointer &cep, std::vector< FileCollection * >::const_iterator &it, MatchPath matchpath=MATCH) const
 
A protected getEntry member function, that not only finds an entry that match the name, if such an entry exists in the collection, it also returns, which collection it was found in.

Protected Attributes


vector< FileCollection * > _collections
 

Detailed Description


CollectionCollection is a FileCollection that consists of an arbitrary number of FileCollections. With a CollectionCollection the user can use multiple FileCollections transparently, making it easy for a program to keep some of its files in a zip archive and others stored in ordinary files. CollectionCollection can be used to create a simple virtual filesystem, where all collections are mounted in /. If more than one collection contain a file with the same path only the one in the first added collection will be accessible.
Definition at line 26 of file collcoll.h.

Constructor & Destructor Documentation

zipios::CollectionCollection::CollectionCollection () [explicit]

Constructor.
Definition at line 16 of file collcoll.cpp.

zipios::CollectionCollection::CollectionCollection (const CollectionCollection &src) [inline]

Copy constructor.
Definition at line 118 of file collcoll.h.

Member Function Documentation

bool zipios::CollectionCollection::addCollection (const FileCollection &collection) Adds a collection.

Parameters:
collection The collection to add.
Returns:
true if the collection was added succesfully and the added collection is valid.
 
Definition at line 21 of file collcoll.cpp.

bool zipios::CollectionCollection::addCollection (FileCollection *collection)

Adds the collection pointed to by collection. The CollectionCollection will call delete on the pointer when it is destructed, so the caller should make absolutely sure to only pass in a collection created with new and be sure to leave it alone after adding it. If the collection is not added false is returned and the caller remains responsible for the collection pointed to by collection.
Parameters:
collection A pointer to the collection to add.
Returns:
true if the collection was added succesfully and the added collection is valid.
 
Definition at line 31 of file collcoll.cpp.

FileCollection * zipios::CollectionCollection::clone () const [virtual]

Create a heap allocated clone of the object this method is called for. The caller is responsible for deallocating the clone when he is done with it.
Returns:
A heap allocated copy of the object this method is called for.
 
Implements zipios::FileCollection.
Definition at line 108 of file collcoll.cpp.

void zipios::CollectionCollection::close () [virtual]

Closes the FileCollection.
Implements zipios::FileCollection.
Definition at line 41 of file collcoll.cpp.

ConstEntries zipios::CollectionCollection::entries () const [virtual] Returns a vector of const pointers to the entries in the FileCollection.

Returns:
a ConstEntries containing the entries of the FileCollection.
Exceptions:
InvalidStateException Thrown if the collection is invalid.
 
Reimplemented from zipios::FileCollection.
Definition at line 46 of file collcoll.cpp.

void zipios::CollectionCollection::getEntry (const string &name, ConstEntryPointer &cep, std::vector< FileCollection * >::const_iterator &it, MatchPathmatchpath = MATCH) const [protected]

A protected getEntry member function, that not only finds an entry that match the name, if such an entry exists in the collection, it also returns, which collection it was found in.
Definition at line 123 of file collcoll.cpp.

ConstEntryPointer zipios::CollectionCollection::getEntry (const string &name, MatchPathmatchpath = MATCH) const [virtual] Returns a ConstEntryPointer to a FileEntry object for the entry with the specified name. To ignore the path part of the filename in search of a match, specify FileCollection::IGNORE as the second argument.

Parameters:
name A string containing the name of the entry to get.
 
matchpath Speficy MATCH, if the path should match as well, specify IGNORE, if the path should be ignored.
Returns:
A ConstEntryPointer to the found entry. The returned pointer equals zero if no entry is found.
Exceptions:
InvalidStateException Thrown if the collection is invalid.
 
Reimplemented from zipios::FileCollection.
Definition at line 58 of file collcoll.cpp.

istream * zipios::CollectionCollection::getInputStream (const ConstEntryPointer &entry) [virtual] Returns a pointer to an opened istream for the specified FileEntry. It is the callers responsibility to delete the stream when he is done with it. Returns 0, if there is no such FileEntry in the FileCollection.

Parameters:
entry A ConstEntryPointer to the FileEntry to get an istream to.
Returns:
an open istream for the specified entry. The istream is allocated on heap and it is the users responsibility to delete it when he is done with it.
Exceptions:
InvalidStateException Thrown if the collection is invalid.
 
Implements zipios::FileCollection.
Definition at line 72 of file collcoll.cpp.

istream * zipios::CollectionCollection::getInputStream (const string &entry_name, MatchPathmatchpath = MATCH) [virtual]

Returns a pointer to an opened istream for the specified entry name. It is the callers responsibility to delete the stream when he is done with it. Returns 0, if there is no entry with the specified name in the FileCollection.
Parameters:
matchpath Speficy MATCH, if the path should match as well, specify IGNORE, if the path should be ignored.
Returns:
an open istream for the specified entry. The istream is allocated on heap and it is the users responsibility to delete it when he is done with it.
Exceptions:
InvalidStateException Thrown if the collection is invalid.
 
Implements zipios::FileCollection.
Definition at line 80 of file collcoll.cpp.

CollectionCollection & zipios::CollectionCollection::inst () [inline, static] This static method provides a singleton instance of a CollectionCollection. The instance is instantiated the first time the method is called.

Returns:
A pointer to a singleton CollectionCollection instance.
 
Definition at line 111 of file collcoll.h.

const CollectionCollection & zipios::CollectionCollection::operator= (const CollectionCollection &src) [inline]

Copy assignment operator.
Definition at line 129 of file collcoll.h.

int zipios::CollectionCollection::size () const [virtual]

Returns the number in entries in all collections kept by the CollectionCollection object.
Reimplemented from zipios::FileCollection.
Definition at line 98 of file collcoll.cpp.
 

Author

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Mon Oct 10 2011 Zipios++