'\" '\" Generated from file 'plugin\&.inc' by tcllib/doctools with format 'nroff' '\" Copyright (c) 2009-2019 Andreas Kupries '\" .TH "doctools::toc::export::json" 3tcl 0\&.1 tcllib "Documentation tools" .\" The -*- nroff -*- definitions below are for supplemental macros used .\" in Tcl/Tk manual entries. .\" .\" .AP type name in/out ?indent? .\" Start paragraph describing an argument to a library procedure. .\" type is type of argument (int, etc.), in/out is either "in", "out", .\" or "in/out" to describe whether procedure reads or modifies arg, .\" and indent is equivalent to second arg of .IP (shouldn't ever be .\" needed; use .AS below instead) .\" .\" .AS ?type? ?name? .\" Give maximum sizes of arguments for setting tab stops. Type and .\" name are examples of largest possible arguments that will be passed .\" to .AP later. If args are omitted, default tab stops are used. .\" .\" .BS .\" Start box enclosure. From here until next .BE, everything will be .\" enclosed in one large box. .\" .\" .BE .\" End of box enclosure. .\" .\" .CS .\" Begin code excerpt. .\" .\" .CE .\" End code excerpt. .\" .\" .VS ?version? ?br? .\" Begin vertical sidebar, for use in marking newly-changed parts .\" of man pages. The first argument is ignored and used for recording .\" the version when the .VS was added, so that the sidebars can be .\" found and removed when they reach a certain age. If another argument .\" is present, then a line break is forced before starting the sidebar. .\" .\" .VE .\" End of vertical sidebar. .\" .\" .DS .\" Begin an indented unfilled display. .\" .\" .DE .\" End of indented unfilled display. .\" .\" .SO ?manpage? .\" Start of list of standard options for a Tk widget. The manpage .\" argument defines where to look up the standard options; if .\" omitted, defaults to "options". The options follow on successive .\" lines, in three columns separated by tabs. .\" .\" .SE .\" End of list of standard options for a Tk widget. .\" .\" .OP cmdName dbName dbClass .\" Start of description of a specific option. cmdName gives the .\" option's name as specified in the class command, dbName gives .\" the option's name in the option database, and dbClass gives .\" the option's class in the option database. .\" .\" .UL arg1 arg2 .\" Print arg1 underlined, then print arg2 normally. .\" .\" .QW arg1 ?arg2? .\" Print arg1 in quotes, then arg2 normally (for trailing punctuation). .\" .\" .PQ arg1 ?arg2? .\" Print an open parenthesis, arg1 in quotes, then arg2 normally .\" (for trailing punctuation) and then a closing parenthesis. .\" .\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages. .if t .wh -1.3i ^B .nr ^l \n(.l .ad b .\" # Start an argument description .de AP .ie !"\\$4"" .TP \\$4 .el \{\ . ie !"\\$2"" .TP \\n()Cu . el .TP 15 .\} .ta \\n()Au \\n()Bu .ie !"\\$3"" \{\ \&\\$1 \\fI\\$2\\fP (\\$3) .\".b .\} .el \{\ .br .ie !"\\$2"" \{\ \&\\$1 \\fI\\$2\\fP .\} .el \{\ \&\\fI\\$1\\fP .\} .\} .. .\" # define tabbing values for .AP .de AS .nr )A 10n .if !"\\$1"" .nr )A \\w'\\$1'u+3n .nr )B \\n()Au+15n .\" .if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n .nr )C \\n()Bu+\\w'(in/out)'u+2n .. .AS Tcl_Interp Tcl_CreateInterp in/out .\" # BS - start boxed text .\" # ^y = starting y location .\" # ^b = 1 .de BS .br .mk ^y .nr ^b 1u .if n .nf .if n .ti 0 .if n \l'\\n(.lu\(ul' .if n .fi .. .\" # BE - end boxed text (draw box now) .de BE .nf .ti 0 .mk ^t .ie n \l'\\n(^lu\(ul' .el \{\ .\" Draw four-sided box normally, but don't draw top of .\" box if the box started on an earlier page. .ie !\\n(^b-1 \{\ \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul' .\} .el \}\ \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul' .\} .\} .fi .br .nr ^b 0 .. .\" # VS - start vertical sidebar .\" # ^Y = starting y location .\" # ^v = 1 (for troff; for nroff this doesn't matter) .de VS .if !"\\$2"" .br .mk ^Y .ie n 'mc \s12\(br\s0 .el .nr ^v 1u .. .\" # VE - end of vertical sidebar .de VE .ie n 'mc .el \{\ .ev 2 .nf .ti 0 .mk ^t \h'|\\n(^lu+3n'\L'|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-|\\n(^lu+3n' .sp -1 .fi .ev .\} .nr ^v 0 .. .\" # Special macro to handle page bottom: finish off current .\" # box/sidebar if in box/sidebar mode, then invoked standard .\" # page bottom macro. .de ^B .ev 2 'ti 0 'nf .mk ^t .if \\n(^b \{\ .\" Draw three-sided box if this is the box's first page, .\" draw two sides but no top otherwise. .ie !\\n(^b-1 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c .el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c .\} .if \\n(^v \{\ .nr ^x \\n(^tu+1v-\\n(^Yu \kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c .\} .bp 'fi .ev .if \\n(^b \{\ .mk ^y .nr ^b 2 .\} .if \\n(^v \{\ .mk ^Y .\} .. .\" # DS - begin display .de DS .RS .nf .sp .. .\" # DE - end display .de DE .fi .RE .sp .. .\" # SO - start of list of standard options .de SO 'ie '\\$1'' .ds So \\fBoptions\\fR 'el .ds So \\fB\\$1\\fR .SH "STANDARD OPTIONS" .LP .nf .ta 5.5c 11c .ft B .. .\" # SE - end of list of standard options .de SE .fi .ft R .LP See the \\*(So manual entry for details on the standard options. .. .\" # OP - start of full description for a single option .de OP .LP .nf .ta 4c Command-Line Name: \\fB\\$1\\fR Database Name: \\fB\\$2\\fR Database Class: \\fB\\$3\\fR .fi .IP .. .\" # CS - begin code excerpt .de CS .RS .nf .ta .25i .5i .75i 1i .. .\" # CE - end code excerpt .de CE .fi .RE .. .\" # UL - underline word .de UL \\$1\l'|0\(ul'\\$2 .. .\" # QW - apply quotation marks to word .de QW .ie '\\*(lq'"' ``\\$1''\\$2 .\"" fix emacs highlighting .el \\*(lq\\$1\\*(rq\\$2 .. .\" # PQ - apply parens and quotation marks to word .de PQ .ie '\\*(lq'"' (``\\$1''\\$2)\\$3 .\"" fix emacs highlighting .el (\\*(lq\\$1\\*(rq\\$2)\\$3 .. .\" # QR - quoted range .de QR .ie '\\*(lq'"' ``\\$1''\\-``\\$2''\\$3 .\"" fix emacs highlighting .el \\*(lq\\$1\\*(rq\\-\\*(lq\\$2\\*(rq\\$3 .. .\" # MT - "empty" string .de MT .QW "" .. .BS .SH NAME doctools::toc::export::json \- JSON export plugin .SH SYNOPSIS package require \fBTcl 8\&.4\fR .sp package require \fBdoctools::toc::export::json ?0\&.1?\fR .sp package require \fBtextutil::adjust \fR .sp \fBexport\fR \fIserial\fR \fIconfiguration\fR .sp .BE .SH DESCRIPTION This package implements the doctools table of contents export plugin for the generation of JSON markup\&. .PP This is an internal package of doctools, for use by the higher level management packages handling tables of contents, especially \fBdoctools::toc::export\fR, the export manager\&. .PP 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 \fBdoctools::toc::export\fR and the export manager objects it provides\&. .SH API The API provided by this package satisfies the specification of the doctoc export plugin API version 2\&. .TP \fBexport\fR \fIserial\fR \fIconfiguration\fR This command takes the canonical serialization of a table of contents, as specified in section \fBToC serialization format\fR, and contained in \fIserial\fR, the \fIconfiguration\fR, a dictionary, and generates JSON markup encoding the table\&. The created string is then returned as the result of the command\&. .PP .SH "JSON NOTATION OF TABLES OF CONTENTS" The JSON format used for tables of contents is a direct translation of the \fBToC serialization format\fR, mapping Tcl dictionaries as JSON objects and Tcl lists as JSON arrays\&. For example, the Tcl serialization .CS 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 } .CE is equivalent to the JSON string .CS { "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" } } .CE .SH CONFIGURATION The JSON export plugin recognizes the following configuration variables and changes its behaviour as they specify\&. .TP boolean \fIindented\fR If this flag is set the plugin will break the generated JSON code across lines and indent it according to its inner structure, with each key of a dictionary on a separate line\&. .sp If this flag is not set (the default), the whole JSON object will be written on a single line, with minimum spacing between all elements\&. .TP boolean \fIaligned\fR If this flag is set the generator ensures that the values for the keys in a dictionary are vertically aligned with each other, for a nice table effect\&. To make this work this also implies that \fBindented\fR is set\&. .sp If this flag is not set (the default), the output is formatted as per the value of \fBindented\fR, without trying to align the values for dictionary keys\&. .PP \fINote\fR that this plugin ignores the standard configuration variables \fBuser\fR, \fBformat\fR, \fBfile\fR, and \fBmap\fR and their values\&. .SH "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\&. .PP We distinguish between \fIregular\fR and \fIcanonical\fR serializations\&. While a table of contents may have more than one regular serialization only exactly one of them will be \fIcanonical\fR\&. .PP .TP regular serialization .RS .IP [1] The serialization of any table of contents is a nested Tcl dictionary\&. .IP [2] This dictionary holds a single key, \fBdoctools::toc\fR, and its value\&. This value holds the contents of the table of contents\&. .IP [3] 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 .RS .TP \fBtitle\fR The value is a string containing the title of the table of contents\&. .TP \fBlabel\fR The value is a string containing a label for the table of contents\&. .TP \fBitems\fR The value is a Tcl list holding the elements of the table, in the order they are to be shown\&. .sp 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\&. .sp The two legal item types and their descriptions are .RS .TP \fBreference\fR 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 .RS .TP \fBid\fR The value is a string containing the id of the document associated with the entry\&. .TP \fBlabel\fR 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\&. .TP \fBdesc\fR The value is a string containing a longer description for this entry\&. .RE .TP \fBdivision\fR 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 .RS .TP \fBid\fR The value is a string containing the id of the document associated with the whole group\&. This key is optional\&. .TP \fBlabel\fR 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\&. .TP \fBitems\fR 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 \fBitems\fR 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\&. .RE .RE .RE .RE .TP 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\&. .RS .IP [1] The keys found in all the nested Tcl dictionaries are sorted in ascending dictionary order, as generated by Tcl's builtin command \fBlsort -increasing -dict\fR\&. .RE .PP .SH "BUGS, IDEAS, FEEDBACK" This document, and the package it describes, will undoubtedly contain bugs and other problems\&. Please report such in the category \fIdoctools\fR of the \fITcllib Trackers\fR [http://core\&.tcl\&.tk/tcllib/reportlist]\&. Please also report any ideas for enhancements you may have for either package and/or documentation\&. .PP When proposing code changes, please provide \fIunified diffs\fR, i\&.e the output of \fBdiff -u\fR\&. .PP Note further that \fIattachments\fR are strongly preferred over inlined patches\&. Attachments can be made by going to the \fBEdit\fR form of the ticket immediately after its creation, and then using the left-most button in the secondary navigation bar\&. .SH KEYWORDS JSON, doctools, export, serialization, table of contents, toc .SH CATEGORY Text formatter plugin .SH COPYRIGHT .nf Copyright (c) 2009-2019 Andreas Kupries .fi