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130 lines
7.7 KiB
130 lines
7.7 KiB
15 years ago
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KHelpCenter documentation meta data structure
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=============================================
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KHelpCenter uses meta data files which describe the documentation available in
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the system. Each document is represented by a meta data file and shown as an
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entry in the KHelpCenter navigation tree view. The meta data contains
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information about title and short description of the document, the location of
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the document and some more information like how to search the document and
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translations of title and description. Document hierarchy is represented as
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hierarchy of the meta data files. Directories are also described by a meta data
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file which contains the same information as a document meta data file.
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Format of the meta data files
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-----------------------------
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The meta files adhere to the Desktop Entry Standard
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(http://www.freedesktop.org/Standards/desktop-entry-spec). Documentation
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specific extensions are covered by an own namespace using the prefix "X-DOC-".
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The following table describes all keys which are currently used by
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KHelpCenter:
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Key Value Description
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Name string Title of document
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Name[xx] string Translated title for language xx
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Comment string Short description of document
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Comment[xx] string Translated short description for
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Language xx
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Icon string Name of icon for document
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DocPath URI Location of document. In addition to the
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standard URI schemes like http: and file:
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all schemes which are supported through
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kioslaves can be used. In particular the
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following non-standard URI schemes are
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supported:
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help: KDE manual identified by app name
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ghelp: GNOME manual identified by app name
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man: man page
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info: info page
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cgi: output of CGI script
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DocPath[xx] URI Language specific location for
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language xx
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Lang langcode Language of document
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X-DOC-Identifier string Unique identifier for document, if this
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entry is not present the base name of the
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file is used as identifier
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X-DOC-Indexer command Command used for creating a search index
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for the document.
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The following symbols are replaced by the
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corresponding values:
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%f - Filename
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X-DOC-IndexTestFile filename Name of file whose existence indicates
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the existence of a usable search index
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X-DOC-Search command Command used for searching, the output
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of the command should be HTML which is
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shown in KHelpCenter.
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The following symbols in the command are
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replaced by the corresponding values:
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%k - Words to be searched for
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%n - Maximum number of results
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%m - Method for combining search words,
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can be 'and' or 'or'
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%l - Language of documents to be searched
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%s - Scope of search. This is a list of
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identifiers as given by the
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X-DOC-Identifier entry or the bas
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name of the desktop file if not
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present.
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X-DOC-SearchMethod string If this entry is 'htdig' htdig is used to
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index and search the document. The
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Indexer, IndexTestFile and Search entries
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aren't required in this case.
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X-DOC-SearchEnabledDefault bool If set to 'true' the document is searched
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by default, if set to 'false' it is not.
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This setting is overridden by user
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selected search scopes.
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X-DOC-Weight int A number indicating the position of the
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document within the list of siblings. A
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greater weight indicates that the document
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is 'heavier', thus shown below 'lighter'
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documents. The default weight is 0.
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X-KDE-KHelpcenter string If this entry is set to one of the
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following values a set of documents
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generated by other means than desktop file
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meta info is inserted at the place
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specified by the desktop file:
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'apps' manuals of applications
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from the start menu
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'scrollkeeper' scrollkeeper docs
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'applets' panel applet docs
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'kinfocenter' kinfocenter docs
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'kcontrol' kcontrol module docs
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'konqueror' konqueror plugin docs
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'kioslave' kioslave docs
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'info' info pages
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X-DOC-DocumentType string Type of document. The type is used to look
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up corresponding search handlers.
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Meta File Location
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------------------
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A list of directories given by the config entry "MetaInfoDirs" in the "General"
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group of the help center configuration file "khelpcenterrc" (at
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$KDEDIRS/share/config) is scanned for desktop files. They are merged to a common
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hierarchy. If the "MetaInfoDirs" entry is empty the directory at
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$KDEDIRS/share/apps/khelpcenter/plugins is used.
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Document Hierarchy
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------------------
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The hierarchy of the documents shown in the help center is reflected by the
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hierarchy of the desktop files in the filesystem. Directories can have an
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associated desktop file with the name ".directory". It can contain all the
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keys described above.
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Language handling
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-----------------
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In addition to translation of meta information like title and short description
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of documents which is contained in the meta file, translations of whole
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documents are handled. Each translation of a document has an own desktop file.
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The language of the document is indicated by adding the language code as
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additional suffix to the the filename of the desktop file. The language suffix
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is added before the ".desktop" suffix (Example: 'apache.de.desktop' would be the
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file name for the german translation of the apache documentation).
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KHelpCenter shows only the documents whose language is contained in the list of
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used languages configured for the desktop in the control center. A document
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corresponding to a desktop file without language suffix is always shown.
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