Ubuntu Manpage: doctools::idx::export::docidx

NAME

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

SYNOPSIS

       package require Tcl  8.4

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

       export serial configuration

_________________________________________________________________

DESCRIPTION

       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.

API

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

       export serial configuration
              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.

[DOCIDX] NOTATION OF KEYWORD INDICES

       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.

CONFIGURATION

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

string user
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.

string file
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.

boolean newlines
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.

boolean indented
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.

boolean aligned
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.

KEYWORD INDEX SERIALIZATION FORMAT

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.

regular serialization

[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

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

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

keywords
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.

references
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,

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

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

canonical serialization
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.

BUGS, IDEAS, FEEDBACK

       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.

KEYWORDS

       docidx, doctools, export, index, serialization

COPYRIGHT

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