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A2X

Section: \ \& (1)
Updated: 9 November 2013
Index Return to Main Contents
 

NAME

a2x - A toolchain manager for AsciiDoc (converts Asciidoc text files to other file formats)  

SYNOPSIS

a2x [OPTIONS] SOURCE_FILE  

DESCRIPTION

A DocBook toolchain manager that translates an AsciiDoc text file SOURCE_FILE to PDF, EPUB, DVI, PS, LaTeX, XHTML (single page or chunked), man page, HTML Help or plain text formats using asciidoc(1) and other applications (see REQUISITES section). SOURCE_FILE can also be a DocBook file with an .xml extension.  

OPTIONS

-a, --attribute=ATTRIBUTE

Set asciidoc(1) attribute value (shortcut for --asciidoc-opts="-a ATTRIBUTE" option). This option may be specified more than once.

--asciidoc-opts=ASCIIDOC_OPTS

Additional asciidoc(1) options. This option may be specified more than once.

--conf-file=CONF_FILE

Load configuration file. See CONF FILES section.

-D, --destination-dir=DESTINATION_DIR

Output directory. Defaults to SOURCE_FILE directory. This option is only applicable to HTML based output formats (chunked, epub, htmlhelp, xhtml).

-d, --doctype=DOCTYPE

DocBook document type: article, manpage or book. Default document type is article unless the format is manpage (in which case it defaults to manpage).

-b, --backend=BACKEND

BACKEND is the name of an installed backend plugin. When this option is specified a2x attempts load a file name a2x-backend.py from the BACKEND plugin directory It then converts the SOURCE_FILE to a BACKEND formatted output file using a global function defined in a2x-backend.py called to_BACKEND.

-f, --format=FORMAT

Output formats: chunked, docbook, dvi, epub, htmlhelp, manpage, pdf (default), ps, tex, text, xhtml. The AsciiDoc a2x-format attribute value is set to FORMAT.

-h, --help

Print command-line syntax and program options to stdout.

--icons

Use admonition or navigation icon images in output documents. The default behavior is to use text in place of icons.

--icons-dir=PATH

A path (relative to output files) containing admonition and navigation icons. Defaults to images/icons. The --icons option is implicit if this option is used.

-k, --keep-artifacts

Do not delete temporary build files.

--lynx

Use lynx(1) to generate text formatted output. The default behavior is to use w3m(1).

-L, --no-xmllint

Do not check asciidoc output with xmllint(1).

---epubcheck

Check EPUB output with epubcheck(1).

-n, --dry-run

Do not do anything just print what would have been done.

-r, --resource=RESOURCE_SPEC

Specify a resource. This option may be specified more than once. See the RESOURCES section for more details.

-m, --resource-manifest=FILE

FILE contains a list resources (one per line). Manifest FILE entries are formatted just like --resource option arguments. Environment variables and tilde home directories are allowed.

--stylesheet=STYLESHEET

A space delimited list of one or more CSS stylesheet file names that are used to style HTML output generated by DocBook XSL Stylesheets. Defaults to docbook-xsl.css. The stylesheets are processed in list order. The stylesheets must reside in a valid resource file location. Applies to HTML formats: xhtml, epub, chunked, htmlhelp formats.

-v, --verbose

Print operational details to stderr. A second -v option applies the verbose option to toolchain commands.

--version

Print program version to stdout.

--xsltproc-opts=XSLTPROC_OPTS

Additional xsltproc(1) options. This option may be specified more than once.

--xsl-file=XSL_FILE

Override the built-in XSL stylesheet with the custom XSL stylesheet XSL_FILE.

--fop

Use FOP to generate PDFs. The default behavior is to use dblatex(1). The --fop option is implicit if this option is used.

--fop-opts=FOP_OPTS

Additional fop(1) options. If this option is specified FOP is used to generate PDFs. This option may be specified more than once.

--dblatex-opts=DBLATEX_OPTS

Additional dblatex(1) options. This option may be specified more than once.

--backend-opts=BACKEND_OPTS

Options for the backend plugin specified by the --backend option. This option may be specified more than once.

Options can also be set in the AsciiDoc source file. If SOURCE_FILE contains a comment line beginning with // a2x: then the remainder of the line will be treated as a2x command-line options. For example:

// a2x default options.
//    a2x: -dbook --epubcheck
// Suppress revision history in dblatex outputs.
//    a2x: --dblatex-opts "-P latex.output.revhistory=0"

* Options spanning multiple such comment lines will be concatenated.

* Zero or more white space characters can appear between the leading // and a2x:.

* Command-line options take precedence over options set in the source file.
 

OUTPUT FILES

Output files are written to the directory specified by the --destination-dir option. If no --destination-dir option is set output files are written to the SOURCE_FILE directory.

Output files have the same name as the SOURCE_FILE but with an appropriate file name extension: .html for xhtml; .epub for epub; .hhp for htmlhelp; .pdf for pdf; .text for text, .xml for docbook. By convention manpages have no .man extension (man page section number only). Chunked HTML directory names have a .chunked extension; chunked HTML Help directory names have a .htmlhelp extension.

Same named existing files are overwritten.

In addition to generating HTML files the xhtml, epub, chunked and htmlhelp formats ensure resource files are copied to their correct destination directory locations.  

RESOURCES

Resources are files (typically CSS and images) that are required by HTML based outputs (xhtml, epub, chunked, htmlhelp formats). a2x scans the generated HTML files and builds a list of required CSS and image files. Additional resource files can be specified explicitly using the --resource option.

a2x searches for resource files in the following locations in the following order:

1. The SOURCE_FILE directory.

2. Resource directories specified by the --resource option (searched recursively).

3. Resource directories specified by the --resource-manifest option (searched recursively in the order they appear in the manifest file).

4. The stock images and stylesheets directories in the asciidoc(1) configuration files directories (searched recursively).

5. The destination directory.

When a resource file is found it is copied to the correct relative destination directory. Missing destination sub-directories are created automatically.

There are two distinct mechanisms for specifying additional resources:

1. A resource directory which will be searched recursively for missing resource files.

2. A resource file which will be copied to the output destination directory.

Resources are specified with --resource option values which can be one of the following formats:

<resource_dir>
<resource_file>[=<destination_file>]
.<ext>=<mimetype>

Where:

<resource_dir>

Specifies a directory (absolute or relative to the SOURCE_FILE) which is searched recursively for missing resource files. To eliminate ambiguity the <resource_dir> name should end with a directory separator character.

<resource_file>

Specifies a resource file (absolute or relative to the SOURCE_FILE) which will be copied to <destination_file>. If <destination_file> is not specified then it is the same as the <resource_file>.

<destination_file>

Specifies the destination of the copied source file. The <destination_file> path is relative to the destination directory (absolute paths are not allowed). The location of the destination directory depends on the output FORMAT (see the OUTPUT FILES section for details):

chunked, htmlhelp

The chunked output directory.

epub

The archived OEBPS directory.

xhtml

The output DESTINATION_DIR.

.<ext>=<mimetype>

When adding resources to EPUB files the mimetype is inferred from the <destination file> extension, if the mimetype cannot be guessed an error occurs. The .<ext>=<mimetype> resource syntax can be used to explicitly set mimetypes. <ext> is the file name extension, <mimetype> is the corresponding MIME type.

Resource option examples:

--resource ../images/
--resource doc/README.txt=README.txt
--resource ~/images/tiger.png=images/tiger.png
--resource .ttf=application/x-font-ttf
 

EXAMPLES

a2x -f pdf doc/source-highlight-filter.txt

Generates doc/source-highlight-filter.pdf file.

a2x -f xhtml -D ../doc --icons -r ../images/ team.txt

Creates HTML file ../doc/team.html, uses admonition icons and recursively searches the ../images/ directory for any missing resources.

a2x -f manpage doc/asciidoc.1.txt

Generate doc/asciidoc.1 manpage.
 

REQUISITES

a2x uses the following programs:

*

Asciidoc: http://asciidoc.org/

*

xsltproc: (all formats except text): http://xmlsoft.org/XSLT/

*

DocBook XSL Stylesheets (all formats except text): http://docbook.sourceforge.net/projects/xsl/

*

dblatex (pdf, dvi, ps, tex formats): http://dblatex.sourceforge.net/

*

FOP (pdf format --- alternative PDF file generator): http://xmlgraphics.apache.org/fop/

*

w3m (text format): http://w3m.sourceforge.net/index.en.html

*

Lynx (text format --- alternative text file generator): http://lynx.isc.org/

*

epubcheck (epub format --- EPUB file validator): http://code.google.com/p/epubcheck/

See also the latest README file.  

CONF FILES

A configuration file contains executable Python code that overrides the global configuration parameters in a2x.py. Optional configuration files are loaded in the following order:

1.

a2x.conf from the directory containing the a2x.py executable.

2.

a2x.conf from the AsciiDoc global configuration directory. Skip this step if we are executing a locally installed (non system wide) copy.

3.

a2x.conf from the AsciiDoc $HOME/.asciidoc configuration directory.

4. The CONF_FILE specified in the --conf-file option.

Here are the default configuration file option values:

# Optional environment variable dictionary passed to
# executing programs. If set to None the existing
# environment is used.
ENV = None

# External executables.
ASCIIDOC = 'asciidoc'
XSLTPROC = 'xsltproc'
DBLATEX = 'dblatex'         # pdf generation.
FOP = 'fop'                 # pdf generation (--fop option).
W3M = 'w3m'                 # text generation.
LYNX = 'lynx'               # text generation (if no w3m).
XMLLINT = 'xmllint'         # Set to '' to disable.
EPUBCHECK = 'epubcheck'     # Set to '' to disable.
# External executable default options.
ASCIIDOC_OPTS = ''
DBLATEX_OPTS = ''
FOP_OPTS = ''
XSLTPROC_OPTS = ''
 

BUGS

See the AsciiDoc distribution BUGS file.  

AUTHOR

a2x was originally written by Stuart Rackham. Many people have contributed to it.  

RESOURCES

SourceForge: http://sourceforge.net/projects/asciidoc/

Main web site: http://asciidoc.org/  

COPYING

Copyright (C) 2002-2011 Stuart Rackham. Free use of this software is granted under the terms of the MIT license.


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
OUTPUT FILES
RESOURCES
EXAMPLES
REQUISITES
CONF FILES
BUGS
AUTHOR
RESOURCES
COPYING


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