[//000000001]: # (doctools::toc::export::doctoc \- Documentation tools) [//000000002]: # (Generated from file 'plugin\.inc' by tcllib/doctools with format 'markdown') [//000000003]: # (Copyright © 2009\-2019 Andreas Kupries ) [//000000004]: # (doctools::toc::export::doctoc\(n\) 0\.2\.1 tcllib "Documentation tools")
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# NAME doctools::toc::export::doctoc \- doctoc export plugin # Table Of Contents - [Table Of Contents](#toc) - [Synopsis](#synopsis) - [Description](#section1) - [API](#section2) - [\[doctoc\] notation of tables of contents](#section3) - [Configuration](#section4) - [ToC serialization format](#section5) - [Bugs, Ideas, Feedback](#section6) - [Keywords](#keywords) - [Category](#category) - [Copyright](#copyright) # SYNOPSIS package require Tcl 8\.4 package require doctools::toc::export::doctoc ?0\.2\.1? [__[export](\.\./\.\./\.\./\.\./index\.md\#export)__ *serial* *configuration*](#1) # DESCRIPTION This package implements the doctools table of contents export plugin for the generation of doctoc markup\. This is an internal package of doctools, for use by the higher level management packages handling tables of contents, especially __[doctools::toc::export](toc\_export\.md)__, 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::toc::export](toc\_export\.md)__ and the export manager objects it provides\. # API The API provided by this package satisfies the specification of the doctoc export plugin API version 2\. - __[export](\.\./\.\./\.\./\.\./index\.md\#export)__ *serial* *configuration* This command takes the canonical serialization of a table of contents, as specified in section [ToC serialization format](#section5), and contained in *serial*, the *configuration*, a dictionary, and generates doctoc markup encoding the table\. The created string is then returned as the result of the command\. # \[doctoc\] notation of tables of contents The doctoc format for tables of contents, also called the *doctoc markup language*, is too large to be covered in single section\. The interested reader should start with the document 1. *[doctoc language introduction](\.\./doctools/doctoc\_lang\_intro\.md)* and then proceed from there to the formal specifications, i\.e\. the documents 1. *[doctoc language syntax](\.\./doctools/doctoc\_lang\_syntax\.md)* and 1. *[doctoc language command reference](\.\./doctools/doctoc\_lang\_cmdref\.md)*\. to get a thorough understanding of the language\. # Configuration The doctoc 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 table of contents 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 doctoc 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 tables of contents\. 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 value of __newlines__, and no indenting is done\. - boolean *aligned* If this flag is set the generator ensures that the arguments for the __item__ commands in a division 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\. # ToC serialization format Here we specify the format used by the doctools v2 packages to serialize tables of contents as immutable values for transport, comparison, etc\. We distinguish between *regular* and *canonical* serializations\. While a table of contents may have more than one regular serialization only exactly one of them will be *canonical*\. - regular serialization 1. The serialization of any table of contents is a nested Tcl dictionary\. 1. This dictionary holds a single key, __doctools::toc__, and its value\. This value holds the contents of the table of contents\. 1. The contents of the table of contents are a Tcl dictionary holding the title of the table of contents, a label, and its elements\. The relevant keys and their values are * __title__ The value is a string containing the title of the table of contents\. * __label__ The value is a string containing a label for the table of contents\. * __items__ The value is a Tcl list holding the elements of the table, in the order they are to be shown\. Each element is a Tcl list holding the type of the item, and its description, in this order\. An alternative description would be that it is a Tcl dictionary holding a single key, the item type, mapped to the item description\. The two legal item types and their descriptions are + __reference__ This item describes a single entry in the table of contents, referencing a single document\. To this end its value is a Tcl dictionary containing an id for the referenced document, a label, and a longer textual description which can be associated with the entry\. The relevant keys and their values are - __id__ The value is a string containing the id of the document associated with the entry\. - __label__ The value is a string containing a label for this entry\. This string also identifies the entry, and no two entries \(references and divisions\) in the containing list are allowed to have the same label\. - __desc__ The value is a string containing a longer description for this entry\. + __division__ This item describes a group of entries in the table of contents, inducing a hierarchy of entries\. To this end its value is a Tcl dictionary containing a label for the group, an optional id to a document for the whole group, and the list of entries in the group\. The relevant keys and their values are - __id__ The value is a string containing the id of the document associated with the whole group\. This key is optional\. - __label__ The value is a string containing a label for the group\. This string also identifies the entry, and no two entries \(references and divisions\) in the containing list are allowed to have the same label\. - __items__ The value is a Tcl list holding the elements of the group, in the order they are to be shown\. This list has the same structure as the value for the keyword __items__ used to describe the whole table of contents, see above\. This closes the recusrive definition of the structure, with divisions holding the same type of elements as the whole table of contents, including other divisions\. - canonical serialization The canonical serialization of a table of contents 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 this table of contents\. 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__\. # 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 Trackers](http://core\.tcl\.tk/tcllib/reportlist)\. Please also report any ideas for enhancements you may have for either package and/or documentation\. When proposing code changes, please provide *unified diffs*, i\.e the output of __diff \-u__\. Note further that *attachments* are strongly preferred over inlined patches\. Attachments can be made by going to the __Edit__ form of the ticket immediately after its creation, and then using the left\-most button in the secondary navigation bar\. # KEYWORDS [doctoc](\.\./\.\./\.\./\.\./index\.md\#doctoc), [doctools](\.\./\.\./\.\./\.\./index\.md\#doctools), [export](\.\./\.\./\.\./\.\./index\.md\#export), [serialization](\.\./\.\./\.\./\.\./index\.md\#serialization), [table of contents](\.\./\.\./\.\./\.\./index\.md\#table\_of\_contents), [toc](\.\./\.\./\.\./\.\./index\.md\#toc) # CATEGORY Text formatter plugin # COPYRIGHT Copyright © 2009\-2019 Andreas Kupries