# kio Library API Documentation

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# KProtocolInfo Class Reference

Information about I/O (Internet, etc.) protocols supported by KDE. More...

`#include <kprotocolinfo.h>`

Inheritance diagram for KProtocolInfo:

[legend]
Collaboration diagram for KProtocolInfo:

[legend]
List of all members.

## Public Types

typedef KSharedPtr< KProtocolInfo > | Ptr
typedef QValueList< ExtraField > | ExtraFieldList
enum | Type { T_STREAM, T_FILESYSTEM, T_NONE, T_ERROR }
enum | FileNameUsedForCopying { Name, FromURL }

## Public Member Functions

| KProtocolInfo (const QString &path)
virtual bool | isValid () const
virtual QString | name () const
| KProtocolInfo (QDataStream &_str, int offset)
virtual void | load (QDataStream &)
virtual void | save (QDataStream &)

## Static Public Member Functions

static QStringList | protocols ()
static bool | isKnownProtocol (const KURL &url)
static bool | isKnownProtocol (const QString &protocol)
static QString | exec (const QString &protocol)
static Type | inputType (const KURL &url)
static Type | outputType (const KURL &url)
static QStringList | listing (const KURL &url)
static ExtraFieldList | extraFields (const KURL &url)
static bool | isSourceProtocol (const KURL &url)
static bool | isHelperProtocol (const KURL &url)
static bool | isHelperProtocol (const QString &protocol)
static bool | isFilterProtocol (const KURL &url)
static bool | isFilterProtocol (const QString &protocol)
static bool | supportsListing (const KURL &url)
static bool | supportsReading (const KURL &url)
static bool | supportsWriting (const KURL &url)
static bool | supportsMakeDir (const KURL &url)
static bool | supportsDeleting (const KURL &url)
static bool | supportsLinking (const KURL &url)
static bool | supportsMoving (const KURL &url)
static bool | canCopyFromFile (const KURL &url)
static bool | canCopyToFile (const KURL &url)
static bool | canRenameFromFile (const KURL &url)
static bool | canRenameToFile (const KURL &url)
static bool | canDeleteRecursive (const KURL &url)
static FileNameUsedForCopying | fileNameUsedForCopying (const KURL &url)
static QString | defaultMimetype (const KURL &url)
static QString | icon (const QString &protocol)
static QString | config (const QString &protocol)
static int | maxSlaves (const QString &protocol)
static bool | determineMimetypeFromExtension (const QString &protocol)
static QString | docPath (const QString &protocol)
static QString | protocolClass (const QString &protocol)
static bool | showFilePreview (const QString &protocol)
static KURL::URIMode | uriParseMode (const QString &protocol)
static QStringList | capabilities (const QString &protocol)
static QString | proxiedBy (const QString &protocol)
static Type | inputType (const QString &protocol) KDE_DEPRECATED
static Type | outputType (const QString &protocol) KDE_DEPRECATED
static QStringList | listing (const QString &protocol) KDE_DEPRECATED
static bool | isSourceProtocol (const QString &protocol) KDE_DEPRECATED
static bool | supportsListing (const QString &protocol) KDE_DEPRECATED
static bool | supportsReading (const QString &protocol) KDE_DEPRECATED
static bool | supportsWriting (const QString &protocol) KDE_DEPRECATED
static bool | supportsMakeDir (const QString &protocol) KDE_DEPRECATED
static bool | supportsDeleting (const QString &protocol) KDE_DEPRECATED
static bool | supportsLinking (const QString &protocol) KDE_DEPRECATED
static bool | supportsMoving (const QString &protocol) KDE_DEPRECATED
static bool | canCopyFromFile (const QString &protocol) KDE_DEPRECATED
static bool | canCopyToFile (const QString &protocol) KDE_DEPRECATED
static QString | defaultMimetype (const QString &protocol) KDE_DEPRECATED

## Protected Member Functions

bool | canRenameFromFile () const
bool | canRenameToFile () const
bool | canDeleteRecursive () const
FileNameUsedForCopying | fileNameUsedForCopying () const
virtual void | virtual_hook (int id, void *data)

## Static Protected Member Functions

static KProtocolInfo * | findProtocol (const KURL &url)

## Protected Attributes

QString | m_name
QString | m_exec
Type | m_inputType
Type | m_outputType
QStringList | m_listing
bool | m_isSourceProtocol
bool | m_isHelperProtocol
bool | m_supportsListing
bool | m_supportsReading
bool | m_supportsWriting
bool | m_supportsMakeDir
bool | m_supportsDeleting
bool | m_supportsLinking
bool | m_supportsMoving
QString | m_defaultMimetype
bool | m_determineMimetypeFromExtension
QString | m_icon
bool | m_canCopyFromFile
bool | m_canCopyToFile
QString | m_config
int | m_maxSlaves

## Friends

class | KProtocolInfoFactory

## Classes

struct | ExtraField
| Definition of an extra field in the UDS entries, returned by a listDir operation. More...

## Detailed Description

Information about I/O (Internet, etc.) protocols supported by KDE.

This class is useful if you want to know which protocols KDE supports. In addition you can find out lots of information about a certain protocol. A KProtocolInfo instance represents a single protocol. Most of the functionality is provided by the static methods that scan the *.protocol files of all installed kioslaves to get this information.

*.protocol files are installed in the "services" resource.

Author:
  Torben Weis <weis@kde.org>

Definition at line 44 of file kprotocolinfo.h.

## Member Enumeration Documentation

enum KProtocolInfo::Type

Describes the type of a protocol.

Enumeration values:

  T_STREAM | protocol returns a stream
  T_FILESYSTEM | protocol describes location in a file system
  T_NONE | no information about the tyope available
  T_ERROR | used to signal an error

Definition at line 117 of file kprotocolinfo.h.

## Constructor & Destructor Documentation

KProtocolInfo::KProtocolInfo | ( | const QString & | path | ) |

Read a protocol description file.

Parameters:

  | path | the path of the description file

## Member Function Documentation

virtual bool KProtocolInfo::isValid | ( |  | ) | const`[inline, virtual]`

Returns whether the protocol description file is valid.

Returns:
  true if valid, false otherwise

Implements KSycocaEntry.

Definition at line 64 of file kprotocolinfo.h.

virtual QString KProtocolInfo::name | ( |  | ) | const`[inline, virtual]`

Returns the name of the protocol.

This corresponds to the "protocol=" field in the protocol description file.

Returns:
  the name of the protocol

See also:
  KURL::protocol()

Implements KSycocaEntry.

Definition at line 74 of file kprotocolinfo.h.

static QStringList KProtocolInfo::protocols | ( |  | ) | `[static]`

Returns list of all known protocols.

Returns:
  a list of all known protocols

bool KProtocolInfo::isKnownProtocol | ( | const KURL & | url | ) | `[static]`

Returns whether a protocol is installed that is able to handle `url`.

Parameters:

  | url | the url to check

Returns:
  true if the protocol is known

See also:
  name()

Definition at line 109 of file kprotocolinfo.cpp.

Referenced by KURLBar::readItem().

bool KProtocolInfo::isKnownProtocol | ( | const QString & | protocol | ) | `[static]`

| Same as above except you can supply just the protocol instead of the whole URL. Definition at line 114 of file kprotocolinfo.cpp. References KProtocolInfoFactory::findProtocol(), and KProtocolInfoFactory::self().

static QString KProtocolInfo::exec | ( | const QString & | protocol | ) | `[static]`

Returns the library / executable to open for the protocol `protocol` Example : "kio_ftp", meaning either the executable "kio_ftp" or the library "kio_ftp.la" (recommended), whichever is available.

This corresponds to the "exec=" field in the protocol description file.

Parameters:

  | protocol | the protocol to check

Returns:
  the executable of library to open, or QString::null for unsupported protocols

See also:
  KURL::protocol()

KProtocolInfo::Type KProtocolInfo::inputType | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol should be treated as a filesystem or as a stream when reading from it.

This corresponds to the "input=" field in the protocol description file. Valid values for this field are "filesystem", "stream" or "none" (default).

Parameters:

  | url | the url to check

Returns:
  the input type of the given `url`

Definition at line 51 of file kprotocolinfo.cpp.

References T_NONE.

KProtocolInfo::Type KProtocolInfo::outputType | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol should be treated as a filesystem or as a stream when writing to it.

This corresponds to the "output=" field in the protocol description file. Valid values for this field are "filesystem", "stream" or "none" (default).

Parameters:

  | url | the url to check

Returns:
  the output type of the given `url`

Definition at line 60 of file kprotocolinfo.cpp.

References T_NONE.

QStringList KProtocolInfo::listing | ( | const KURL & | url | ) | `[static]`

Returns the list of fields this protocol returns when listing The current possibilities are Name, Type, Size, Date, AccessDate, Access, Owner, Group, Link, URL, MimeType as well as Extra1, Extra2 etc.

for extra fields (see extraFields).

This corresponds to the "listing=" field in the protocol description file. The supported fields should be separated with ',' in the protocol description file.

Parameters:

  | url | the url to check

Returns:
  a list of field names

Definition at line 130 of file kprotocolinfo.cpp.

static ExtraFieldList KProtocolInfo::extraFields | ( | const KURL & | url | ) | `[static]`

Definition of extra fields in the UDS entries, returned by a listDir operation.

This corresponds to the "ExtraNames=" and "ExtraTypes=" fields in the protocol description file. Those two lists should be separated with ',' in the protocol description file. See ExtraField for details about names and types

Since:
  3.2

bool KProtocolInfo::isSourceProtocol | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can act as a source protocol.

A source protocol retrieves data from or stores data to the location specified by a URL. A source protocol is the opposite of a filter protocol.

The "source=" field in the protocol description file determines whether a protocol is a source protocol or a filter protocol.

Parameters:

  | url | the url to check

Returns:
  true if the protocol is a source of data (e.g. http), false if the protocol is a filter (e.g. gzip)

Definition at line 70 of file kprotocolinfo.cpp.

bool KProtocolInfo::isHelperProtocol | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can act as a helper protocol.

A helper protocol invokes an external application and does not return a file or stream.

This corresponds to the "helper=" field in the protocol description file. Valid values for this field are "true" or "false" (default).

Parameters:

  | url | the url to check

Returns:
  true if the protocol is a helper protocol (e.g. vnc), false if not (e.g. http)

Definition at line 94 of file kprotocolinfo.cpp.

Referenced by KRun::processDesktopExec().

bool KProtocolInfo::isHelperProtocol | ( | const QString & | protocol | ) | `[static]`

| Same as above except you can supply just the protocol instead of the whole URL. Definition at line 99 of file kprotocolinfo.cpp. References KProtocolInfoFactory::findProtocol(), and KProtocolInfoFactory::self().

bool KProtocolInfo::isFilterProtocol | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can act as a filter protocol.

A filter protocol can operate on data that is passed to it but does not retrieve/store data itself, like gzip. A filter protocol is the opposite of a source protocol.

The "source=" field in the protocol description file determines whether a protocol is a source protocol or a filter protocol. Valid values for this field are "true" (default) for source protocol or "false" for filter protocol.

Parameters:

  | url | the url to check

Returns:
  true if the protocol is a filter (e.g. gzip), false if the protocol is a helper or source

Definition at line 79 of file kprotocolinfo.cpp.

bool KProtocolInfo::isFilterProtocol | ( | const QString & | protocol | ) | `[static]`

| Same as above except you can supply just the protocol instead of the whole URL. Definition at line 84 of file kprotocolinfo.cpp. References KProtocolInfoFactory::findProtocol(), and KProtocolInfoFactory::self().

bool KProtocolInfo::supportsListing | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can list files/objects.

If a protocol supports listing it can be browsed in e.g. file-dialogs and konqueror.

Whether a protocol supports listing is determined by the "listing=" field in the protocol description file. If the protocol support listing it should list the fields it provides in this field. If the protocol does not support listing this field should remain empty (default.)

Parameters:

  | url | the url to check

Returns:
  true if the protocol support listing

See also:
  listing()

Definition at line 121 of file kprotocolinfo.cpp.

bool KProtocolInfo::supportsReading | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can retrieve data from URLs.

This corresponds to the "reading=" field in the protocol description file. Valid values for this field are "true" or "false" (default).

Parameters:

  | url | the url to check

Returns:
  true if it is possible to read from the URL

Definition at line 139 of file kprotocolinfo.cpp.

bool KProtocolInfo::supportsWriting | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can store data to URLs.

This corresponds to the "writing=" field in the protocol description file. Valid values for this field are "true" or "false" (default).

Parameters:

  | url | the url to check

Returns:
  true if the protocol supports writing

Definition at line 148 of file kprotocolinfo.cpp.

bool KProtocolInfo::supportsMakeDir | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can create directories/folders.

This corresponds to the "makedir=" field in the protocol description file. Valid values for this field are "true" or "false" (default).

Parameters:

  | url | the url to check

Returns:
  true if the protocol can create directories

Definition at line 157 of file kprotocolinfo.cpp.

bool KProtocolInfo::supportsDeleting | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can delete files/objects.

This corresponds to the "deleting=" field in the protocol description file. Valid values for this field are "true" or "false" (default).

Parameters:

  | url | the url to check

Returns:
  true if the protocol supports deleting

Definition at line 166 of file kprotocolinfo.cpp.

bool KProtocolInfo::supportsLinking | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can create links between files/objects.

This corresponds to the "linking=" field in the protocol description file. Valid values for this field are "true" or "false" (default).

Parameters:

  | url | the url to check

Returns:
  true if the protocol supports linking

Definition at line 175 of file kprotocolinfo.cpp.

bool KProtocolInfo::supportsMoving | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can move files/objects between different locations.

This corresponds to the "moving=" field in the protocol description file. Valid values for this field are "true" or "false" (default).

Parameters:

  | url | the url to check

Returns:
  true if the protocol supports moving

Definition at line 184 of file kprotocolinfo.cpp.

bool KProtocolInfo::canCopyFromFile | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can copy files/objects directly from the filesystem itself.

If not, the application will read files from the filesystem using the file-protocol and pass the data on to the destination protocol.

This corresponds to the "copyFromFile=" field in the protocol description file. Valid values for this field are "true" or "false" (default).

Parameters:

  | url | the url to check

Returns:
  true if the protocol can copy files from the local file system

Definition at line 193 of file kprotocolinfo.cpp.

bool KProtocolInfo::canCopyToFile | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can copy files/objects directly to the filesystem itself.

If not, the application will receive the data from the source protocol and store it in the filesystem using the file-protocol.

This corresponds to the "copyToFile=" field in the protocol description file. Valid values for this field are "true" or "false" (default).

Parameters:

  | url | the url to check

Returns:
  true if the protocol can copy files to the local file system

Definition at line 203 of file kprotocolinfo.cpp.

bool KProtocolInfo::canRenameFromFile | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can rename (i.e.

move fast) files/objects directly from the filesystem itself. If not, the application will read files from the filesystem using the file-protocol and pass the data on to the destination protocol.

This corresponds to the "renameFromFile=" field in the protocol description file. Valid values for this field are "true" or "false" (default).

Parameters:

  | url | the url to check

Returns:
  true if the protocol can rename/move files from the local file system

Since:
  3.4

Definition at line 212 of file kprotocolinfo.cpp.

bool KProtocolInfo::canRenameToFile | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can rename (i.e.

move fast) files/objects directly to the filesystem itself. If not, the application will receive the data from the source protocol and store it in the filesystem using the file-protocol.

This corresponds to the "renameToFile=" field in the protocol description file. Valid values for this field are "true" or "false" (default).

Parameters:

  | url | the url to check

Returns:
  true if the protocol can rename files to the local file system

Since:
  3.4

Definition at line 222 of file kprotocolinfo.cpp.

bool KProtocolInfo::canDeleteRecursive | ( | const KURL & | url | ) | `[static]`

Returns whether the protocol can recursively delete directories by itself.

If not (the usual case) then KIO will list the directory and delete files and empty directories one by one.

This corresponds to the "deleteRecursive=" field in the protocol description file. Valid values for this field are "true" or "false" (default).

Parameters:

  | url | the url to check

Returns:
  true if the protocol can delete non-empty directories by itself.

Since:
  3.4

Definition at line 231 of file kprotocolinfo.cpp.

KProtocolInfo::FileNameUsedForCopying KProtocolInfo::fileNameUsedForCopying | ( | const KURL & | url | ) | `[static]`

This setting defines the strategy to use for generating a filename, when copying a file or directory to another directory.

By default the destination filename is made out of the filename in the source URL. However if the ioslave displays names that are different from the filename of the URL (e.g. kio_fonts shows Arial for arial.ttf, or kio_trash shows foo.txt and uses some internal URL), using Name means that the display name (UDS_NAME) will be used to as the filename in the destination directory.

This corresponds to the "fileNameUsedForCopying=" field in the protocol description file. Valid values for this field are "Name" or "FromURL" (default).

Parameters:

  | url | the url to check

Returns:
  how to generate the filename in the destination directory when copying/moving

Since:
  3.4

Definition at line 240 of file kprotocolinfo.cpp.

QString KProtocolInfo::defaultMimetype | ( | const KURL & | url | ) | `[static]`

Returns default mimetype for this URL based on the protocol.

This corresponds to the "defaultMimetype=" field in the protocol description file.

Parameters:

  | url | the url to check

Returns:
  the default mime type of the protocol, or null if unknown

Definition at line 249 of file kprotocolinfo.cpp.

Referenced by KMimeType::findByURL().

static QString KProtocolInfo::icon | ( | const QString & | protocol | ) | `[static]`

Returns the name of the icon, associated with the specified protocol.

This corresponds to the "Icon=" field in the protocol description file.

Parameters:

  | protocol | the protocol to check

Returns:
  the icon of the protocol, or null if unknown

Referenced by KMimeType::iconForURL().

static QString KProtocolInfo::config | ( | const QString & | protocol | ) | `[static]`

Returns the name of the config file associated with the specified protocol.

This is useful if two similar protocols need to share a single config file, e.g. http and https.

This corresponds to the "config=" field in the protocol description file. The default is the protocol name, see name()

Parameters:

  | protocol | the protocol to check

Returns:
  the config file, or null if unknown

static int KProtocolInfo::maxSlaves | ( | const QString & | protocol | ) | `[static]`

Returns the soft limit on the number of slaves for this protocol.

This limits the number of slaves used for a single operation, note that multiple operations may result in a number of instances that exceeds this soft limit.

This corresponds to the "maxInstances=" field in the protocol description file. The default is 1.

Parameters:

  | protocol | the protocol to check

Returns:
  the maximum number of slaves, or 1 if unknown

static bool KProtocolInfo::determineMimetypeFromExtension | ( | const QString & | protocol | ) | `[static]`

Returns whether mimetypes can be determined based on extension for this protocol.

For some protocols, e.g. http, the filename extension in the URL can not be trusted to truly reflect the file type.

This corresponds to the "determineMimetypeFromExtension=" field in the protocol description file. Valid values for this field are "true" (default) or "false".

Parameters:

  | protocol | the protocol to check

Returns:
  true if the mime types can be determined by extension

Referenced by KMimeType::findByURL().

static QString KProtocolInfo::docPath | ( | const QString & | protocol | ) | `[static]`

Returns the documentation path for the specified protocol.

This corresponds to the "DocPath=" field in the protocol description file.

Parameters:

  | protocol | the protocol to check

Returns:
  the docpath of the protocol, or null if unknown

Since:
  3.2

static QString KProtocolInfo::protocolClass | ( | const QString & | protocol | ) | `[static]`

Returns the protocol class for the specified protocol.

This corresponds to the "Class=" field in the protocol description file.

The following classes are defined:

- ":internet" for common internet protocols
- ":local" for protocols that access local resources

Protocol classes always start with a ':' so that they can not be confused with the protocols themselves.

Parameters:

  | protocol | the protocol to check

Returns:
  the class of the protocol, or null if unknown

Since:
  3.2

Referenced by KIO::ForwardingSlaveBase::prepareUDSEntry().

static bool KProtocolInfo::showFilePreview | ( | const QString & | protocol | ) | `[static]`

Returns whether file previews should be shown for the specified protocol.

This corresponds to the "ShowPreviews=" field in the protocol description file.

By default previews are shown if protocolClass is :local.

Parameters:

  | protocol | the protocol to check

Returns:
  true if previews should be shown by default, false otherwise

Since:
  3.2

static KURL::URIMode KProtocolInfo::uriParseMode | ( | const QString & | protocol | ) | `[static]`

Returns the suggested URI parsing mode for the KURL parser.

This corresponds to the "URIMode=" field in the protocol description file.

The following parsing modes are defined:

- "url" for a standards compliant URL
- "rawuri" for a non-conformant URI for which URL parsing would be meaningless
- "mailto" for a mailto style URI (the path part contains only an email address)

Parameters:

  | protocol | the protocol to check

Returns:
  the suggested parsing mode, or KURL::Auto if unspecified

Since:
  3.2

static QStringList KProtocolInfo::capabilities | ( | const QString & | protocol | ) | `[static]`

Returns the list of capabilities provided by the kioslave implementing this protocol.

This corresponds to the "Capabilities=" field in the protocol description file.

The capability names are not defined globally, they are up to each slave implementation. For example when adding support for a new special command for mounting, one would add the string "Mount" to the capabilities list, and applications could check for that string before sending a special() command that would otherwise do nothing on older kioslave implementations.

Parameters:

  | protocol | the protocol to check

Returns:
  the list of capabilities.

Since:
  3.3

static QString KProtocolInfo::proxiedBy | ( | const QString & | protocol | ) | `[static]`

Returns the name of the protocol through which the request will be routed if proxy support is enabled.

A good example of this is the ftp protocol for which proxy support is commonly handled by the http protocol.

This corresponds to the "ProxiedBy=" in the protocol description file.

Since:
  3.3

static Type KProtocolInfo::inputType | ( | const QString & | protocol | ) | `[static]`

Deprecated:

static Type KProtocolInfo::outputType | ( | const QString & | protocol | ) | `[static]`

Deprecated:

static QStringList KProtocolInfo::listing | ( | const QString & | protocol | ) | `[static]`

Deprecated:
  Returns the list of fields this protocol returns when listing The current possibilities are Name, Type, Size, Date, AccessDate, Access, Owner, Group, Link, URL, MimeType

static bool KProtocolInfo::isSourceProtocol | ( | const QString & | protocol | ) | `[static]`

Deprecated:

static bool KProtocolInfo::supportsListing | ( | const QString & | protocol | ) | `[static]`

Deprecated:

static bool KProtocolInfo::supportsReading | ( | const QString & | protocol | ) | `[static]`

Deprecated:

static bool KProtocolInfo::supportsWriting | ( | const QString & | protocol | ) | `[static]`

Deprecated:

static bool KProtocolInfo::supportsMakeDir | ( | const QString & | protocol | ) | `[static]`

Deprecated:

static bool KProtocolInfo::supportsDeleting | ( | const QString & | protocol | ) | `[static]`

Deprecated:

static bool KProtocolInfo::supportsLinking | ( | const QString & | protocol | ) | `[static]`

Deprecated:

static bool KProtocolInfo::supportsMoving | ( | const QString & | protocol | ) | `[static]`

Deprecated:

static bool KProtocolInfo::canCopyFromFile | ( | const QString & | protocol | ) | `[static]`

Deprecated:

static bool KProtocolInfo::canCopyToFile | ( | const QString & | protocol | ) | `[static]`

Deprecated:

static QString KProtocolInfo::defaultMimetype | ( | const QString & | protocol | ) | `[static]`

Deprecated:

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

- kprotocolinfo.h
- kprotocolinfo.cpp

This file is part of the documentation for kio Library Version 3.4.1.
Documentation copyright © 1996-2004 the KDE developers.
Generated on Sat Jun 11 20:25:12 2005 by doxygen 1.4.1 written by Dimitri van Heesch, © 1997-2003