Provided by: tcllib_1.20+dfsg-1_all 
NAME
dtplite - Lightweight DocTools Markup Processor
SYNOPSIS
dtplite -o output ?options? format inputfile
dtplite validate inputfile
dtplite -o output ?options? format inputdirectory
dtplite -merge -o output ?options? format inputdirectory
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DESCRIPTION
The application described by this document, dtplite, is the successor to the extremely simple mpexpand.
Influenced in its functionality by the dtp doctools processor it is much more powerful than mpexpand, yet
still as easy to use; definitely easier than dtp with its myriad of subcommands and options.
dtplite is based upon the package doctools, like the other two processors.
USE CASES
dtplite was written with the following three use cases in mind.
[1] Validation of a single document, i.e. checking that it was written in valid doctools format. This
mode can also be used to get a preliminary version of the formatted output for a single document,
for display in a browser, nroff, etc., allowing proofreading of the formatting.
[2] Generation of the formatted documentation for a single package, i.e. all the manpages, plus a
table of contents and an index of keywords.
[3] An extension of the previous mode of operation, a method for the easy generation of one
documentation tree for several packages, and especially of a unified table of contents and keyword
index.
Beyond the above we also want to make use of the customization features provided by the HTML formatter.
It is not the only format the application should be able to generate, but we anticipiate it to be the
most commonly used, and it is one of the few which do provide customization hooks.
We allow the caller to specify a header string, footer string, a stylesheet, and data for a bar of
navigation links at the top of the generated document. While all can be set as long as the formatting
engine provides an appropriate engine parameter (See section OPTIONS) the last two have internal
processing which make them specific to HTML.
COMMAND LINE
dtplite -o output ?options? format inputfile
This is the form for use case [1]. The options will be explained later, in section OPTIONS.
path output (in)
This argument specifies where to write the generated document. It can be the path to a file
or directory, or -. The last value causes the application to write the generated
documented to stdout.
If the output does not exist then [file dirname $output] has to exist and must be a
writable directory. The generated document will be written to a file in that directory,
and the name of that file will be derived from the inputfile, the format, and the value
given to option -ext (if present).
(path|handle) format (in)
This argument specifies the formatting engine to use when processing the input, and thus
the format of the generated document. See section FORMATS for the possibilities recognized
by the application.
path inputfile (in)
This argument specifies the path to the file to process. It has to exist, must be readable,
and written in doctools format.
dtplite validate inputfile
This is a simpler form for use case [1]. The "validate" format generates no output at all, only
syntax checks are performed. As such the specification of an output file or other options is not
necessary and left out.
dtplite -o output ?options? format inputdirectory
This is the form for use case [2]. It differs from the form for use case [1] by having the input
documents specified through a directory instead of a file. The other arguments are identical,
except for output, which now has to be the path to an existing and writable directory.
The input documents are all files in inputdirectory or any of its subdirectories which were
recognized by fileutil::fileType as containing text in doctools format.
dtplite -merge -o output ?options? format inputdirectory
This is the form for use case [3]. The only difference to the form for use case [2] is the
additional option -merge.
Each such call will merge the generated documents coming from processing the input documents under
inputdirectory or any of its subdirectories to the files under output. In this manner it is
possible to incrementally build the unified documentation for any number of packages. Note that it
is necessary to run through all the packages twice to get fully correct cross-references (for
formats supporting them).
OPTIONS
This section describes all the options available to the user of the application, with the exception of
the options -o and -merge. These two were described already, in section COMMAND LINE.
-exclude string
This option specifies an exclude (glob) pattern. Any files identified as manpages to process which
match the exclude pattern are ignored. The option can be provided multiple times, each usage
adding an additional pattern to the list of exclusions.
-ext string
If the name of an output file has to be derived from the name of an input file it will use the
name of the format as the extension by default. This option here will override this however,
forcing it to use string as the file extension. This option is ignored if the name of the output
file is fully specified through option -o.
When used multiple times only the last definition is relevant.
-header file
This option can be used if and only if the selected format provides an engine parameter named
"header". It takes the contents of the specified file and assign them to that parameter, for
whatever use by the engine. The HTML engine will insert the text just after the tag <body>. If
navigation buttons are present (see option -nav below), then the HTML generated for them is
appended to the header data originating here before the final assignment to the parameter.
When used multiple times only the last definition is relevant.
-footer file
Like -header, except that: Any navigation buttons are ignored, the corresponding required engine
parameter is named "footer", and the data is inserted just before the tag </body>.
When used multiple times only the last definition is relevant.
-style file
This option can be used if and only if the selected format provides an engine parameter named
"meta". When specified it will generate a piece of HTML code declaring the file as the stylesheet
for the generated document and assign that to the parameter. The HTML engine will insert this inot
the document, just after the tag <head>.
When processing an input directory the stylesheet file is copied into the output directory and the
generated HTML will refer to the copy, to make the result more self-contained. When processing an
input file we have no location to copy the stylesheet to and so just reference it as specified.
When used multiple times only the last definition is relevant.
-toc path
This option specifies a doctoc file to use for the table of contents instead of generating our
own.
When used multiple times only the last definition is relevant.
-pre+toc label path|text
-post+toc label path|text
This option specifies additional doctoc files (or texts) to use in the navigation bar.
Positioning and handling of multiple uses is like for options -prenav and -postnav, see below.
-nav label url
-prenav label url
Use this option to specify a navigation button with label to display and the url to link to. This
option can be used if and only if the selected format provides an engine parameter named "header".
The HTML generated for this is appended to whatever data we got from option -header before it is
inserted into the generated documents.
When used multiple times all definitions are collected and a navigation bar is created, with the
first definition shown at the left edge and the last definition to the right.
The url can be relative. In that case it is assumed to be relative to the main files (TOC and
Keyword index), and will be transformed for all others to still link properly.
-postnav label url
Use this option to specify a navigation button with label to display and the url to link to. This
option can be used if and only if the selected format provides an engine parameter named "header".
The HTML generated for this is appended to whatever data we got from option -header before it is
inserted into the generated documents.
When used multiple times all definitions are collected and a navigation bar is created, with the
last definition shown at the right edge and the first definition to the left.
The url can be relative. In that case it is assumed to be relative to the main files (TOC and
Keyword index), and will be transformed for all others to still link properly.
FORMATS
At first the format argument will be treated as a path to a tcl file containing the code for the
requested formatting engine. The argument will be treated as the name of one of the predefined formats
listed below if and only if the path does not exist.
Note a limitation: If treating the format as path to the tcl script implementing the engine was
sucessful, then this script has to implement not only the engine API for doctools, i.e. doctools_api,
but for doctoc_api and docidx_api as well. Otherwise the generation of a table of contents and of a
keyword index will fail.
List of predefined formats, i.e. as provided by the package doctools:
nroff The processor generates *roff output, the standard format for unix manpages.
html The processor generates HTML output, for usage in and display by web browsers. This engine is
currently the only one providing the various engine parameters required for the additional
customaization of the output.
tmml The processor generates TMML output, the Tcl Manpage Markup Language, a derivative of XML.
latex The processor generates LaTeX output.
wiki The processor generates Wiki markup as understood by wikit.
list The processor extracts the information provided by manpage_begin. This format is used internally
to extract the meta data from which both table of contents and keyword index are derived from.
null The processor does not generate any output. This is equivalent to validate.
DIRECTORY STRUCTURES
In this section we describe the directory structures generated by the application under output when
processing all documents in an inputdirectory. In other words, this is only relevant to the use cases [2]
and [3].
[2] The following directory structure is created when processing a single set of input documents. The
file extension used is for output in HTML, but that is not relevant to the structure and was just
used to have proper file names.
output/
toc.html
index.html
files/
path/to/FOO.html
The last line in the example shows the document generated for a file FOO located at
inputdirectory/path/to/FOO
[3] When merging many packages into a unified set of documents the generated directory structure is a
bit deeper:
output
.toc
.idx
.tocdoc
.idxdoc
.xrf
toc.html
index.html
FOO1/
...
FOO2/
toc.html
files/
path/to/BAR.html
Each of the directories FOO1, ... contains the documents generated for the package FOO1, ... and
follows the structure shown for use case [2]. The only exception is that there is no per-package
index.
The files ".toc", ".idx", and ".xrf" contain the internal status of the whole output and will be
read and updated by the next invokation. Their contents will not be documented. Remove these files
when all packages wanted for the output have been processed, i.e. when the output is complete.
The files ".tocdoc", and ".idxdoc", are intermediate files in doctoc and docidx markup,
respectively, containing the main table of contents and keyword index for the set of documents
before their conversion to the chosen output format. They are left in place, i.e. not deleted, to
serve as demonstrations of doctoc and docidx markup.
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.
SEE ALSO
docidx introduction, doctoc introduction, doctools introduction
KEYWORDS
HTML, TMML, conversion, docidx, doctoc, doctools, manpage, markup, nroff
CATEGORY
Documentation tools
COPYRIGHT
Copyright (c) 2004-2013 Andreas Kupries <andreas_kupries@users.sourceforge.net>