doctools::idx::export::docidx(n) Documentation tools doctools::idx::export::docidx(n) 







doctools::idx::export::docidx - docidx export plugin








package require Tcl 8.4


package require doctools::idx::export::docidx ?0.1?


export serial configuration












This package implements the doctools keyword index export plugin
    for the generation of docidx markup.


This is an internal package of doctools, for use by the higher
    level management packages handling keyword indices, especially
    doctools::idx::export, the export manager.


Using it from a regular interpreter is possible, however only with
    contortions, and is not recommended. The proper way to use this
    functionality is through the package doctools::idx::export and the
    export manager objects it provides.








The API provided by this package satisfies the specification of
    the docidx export plugin API version 2.



  

  
This command takes the canonical serialization of a keyword index, as
      specified in section Keyword index serialization format, and
      contained in serial, the configuration, a dictionary, and
      generates docidx markup encoding the index. The created string is then
      returned as the result of the command.










The docidx format for keyword indices, also called the docidx
    markup language, is too large to be covered in single section. The
    interested reader should start with the document



  
[1]

  
docidx language introduction




and then proceed from there to the formal specifications, i.e. the
    documents



  
[1]

  
docidx language syntax and

  
[2]

  
docidx language command reference.




to get a thorough understanding of the language.








The docidx export plugin recognizes the following configuration
    variables and changes its behaviour as they specify.



  

  
This standard configuration variable contains the name of the user running
      the process which invoked the export plugin. The plugin puts this
      information into the provenance comment at the beginning of the generated
      document.

  

  
This standard configuration variable contains the name of the file the
      index came from. This variable may not be set or contain the empty string.
      The plugin puts this information, if defined, i.e. set and not the empty
      string, into the provenance comment at the beginning of the generated
      document.

  

  
If this flag is set the plugin will break the generated docidx code across
      lines, with each markup command on a separate line.
    
If this flag is not set (the default), the whole document will
        be written on a single line, with minimum spacing between all
      elements.

  

  

  
If this flag is set the plugin will indent the markup commands according
      to the structure of indices. To make this work this also implies that
      newlines is set. This effect is independent of the value for
      aligned however.
    
If this flag is not set (the default), the output is formatted
        as per the values of newlines and aligned, and no
        indenting is done.

  

  

  
If this flag is set the generator ensures that the arguments for the
      manpage and url commands in a keyword section are aligned
      vertically for a nice table effect. To make this work this also implies
      that newlines is set. This effect is independent of the value for
      indented however.
    
If this flag is not set (the default), the output is formatted
        as per the values of newlines and indented, and no
        alignment is done.

  




Note that this plugin ignores the standard configuration
    variables format, and map, and their values.








Here we specify the format used by the doctools v2 packages to
    serialize keyword indices as immutable values for transport, comparison,
    etc.


We distinguish between regular and canonical
    serializations. While a keyword index may have more than one regular
    serialization only exactly one of them will be canonical.



  

  







  
[1]

  
An index serialization is a nested Tcl dictionary.

  
[2]

  
This dictionary holds a single key, doctools::idx, and its value.
      This value holds the contents of the index.

  
[3]

  
The contents of the index are a Tcl dictionary holding the title of the
      index, a label, and the keywords and references. The relevant keys and
      their values are







  

  
The value is a string containing the title of the index.

  

  
The value is a string containing a label for the index.

  

  
The value is a Tcl dictionary, using the keywords known to the index as
      keys. The associated values are lists containing the identifiers of the
      references associated with that particular keyword.
    
Any reference identifier used in these lists has to exist as a
        key in the references dictionary, see the next item for its
        definition.

  

  

  
The value is a Tcl dictionary, using the identifiers for the references
      known to the index as keys. The associated values are 2-element lists
      containing the type and label of the reference, in this order.
    
Any key here has to be associated with at least one keyword,
        i.e. occur in at least one of the reference lists which are the values
        in the keywords dictionary, see previous item for its
      definition.

  







  
[4]

  
The type of a reference can be one of two values,







  

  
The identifier of the reference is interpreted as symbolic file name,
      refering to one of the documents the index was made for.

  

  
The identifier of the reference is interpreted as an url, refering to some
      external location, like a website, etc.









  

  
The canonical serialization of a keyword index has the format as specified
      in the previous item, and then additionally satisfies the constraints
      below, which make it unique among all the possible serializations of the
      keyword index.







  
[1]

  
The keys found in all the nested Tcl dictionaries are sorted in ascending
      dictionary order, as generated by Tcl's builtin command lsort
      -increasing -dict.

  
[2]

  
The references listed for each keyword of the index, if any, are listed in
      ascending dictionary order of their labels, as generated by Tcl's
      builtin command lsort -increasing -dict.












This document, and the package it describes, will undoubtedly
    contain bugs and other problems. Please report such in the category
    doctools of the Tcllib SF Trackers
    [http://sourceforge.net/tracker/?group_id=12883]. Please also report any
    ideas for enhancements you may have for either package and/or
  documentation.








docidx, doctools, export, index, serialization








Text formatter plugin








Copyright (c) 2009 Andreas Kupries <andreas_kupries@users.sourceforge.net>








  

    0.1
    doctools2idx