Tcl Library Source Code

Documentation
Login
EuroTcl/OpenACS 11 - 12 JULY 2024, VIENNA


[ Main Table Of Contents | Table Of Contents | Keyword Index | Categories | Modules | Applications ]

NAME

doctools::toc::export::json - JSON export plugin

Table Of Contents

SYNOPSIS

package require Tcl 8.5 9
package require doctools::toc::export::json ?0.2?
package require textutil::adjust

export serial configuration

DESCRIPTION

This package implements the doctools table of contents export plugin for the generation of JSON markup.

This is an internal package of doctools, for use by the higher level management packages handling tables of contents, especially doctools::toc::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::toc::export 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.

JSON notation of tables of contents

The JSON format used for tables of contents is a direct translation of the ToC serialization format, mapping Tcl dictionaries as JSON objects and Tcl lists as JSON arrays. For example, the Tcl serialization

doctools::toc {
    items {
        {reference {
	    desc {DocTools - Tables of Contents}
	     id introduction.man
	     label doctools::toc::introduction
	}}
	{division {
	     id processing.man
	     items {
	         {reference {
		     desc {doctoc serialization utilities}
		     id structure.man
		     label doctools::toc::structure
		 }}
		 {reference {
		     desc {Parsing text in doctoc format}
		     id parse.man
		     label doctools::toc::parse
		 }}
	     }
             label Processing
        }}
    }
    label {Table of Contents}
    title TOC
}

is equivalent to the JSON string

{
    "doctools::toc" : {
        "items" : [{
            "reference" : {
                "desc"  : "DocTools - Tables of Contents",
                "id"    : "introduction.man",
                "label" : "doctools::toc::introduction"
            }
        },{
            "division" : {
                "id"    : "processing.man",
                "items" : [{
                    "reference" : {
                        "desc"  : "doctoc serialization utilities",
                        "id"    : "structure.man",
                        "label" : "doctools::toc::structure"
                    }
                },{
                    "reference" : {
                        "desc"  : "Parsing text in doctoc format",
                        "id"    : "parse.man",
                        "label" : "doctools::toc::parse"
                    }
                }],
                "label" : "Processing"
            }
        }],
        "label" : "Table of Contents",
        "title" : "TOC"
    }
}

Configuration

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

Note that this plugin ignores the standard configuration variables user, format, file, 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.

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. 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

JSON, doctools, export, serialization, table of contents, toc

CATEGORY

Text formatter plugin

COPYRIGHT

Copyright © 2009-2019 Andreas Kupries