cc65/doc/ca65html.sgml

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<article>
<title>ca65html Users Guide
<author>Ullrich von Bassewitz, <htmlurl url="mailto:uz@cc65.org" name="uz@cc65.org">
<date>2003-10-16

<abstract>
ca65html is an assembler source to HTML converter. It is very useful if you
want to publish your assembler sources in the web.
</abstract>

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<toc>

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<sect>Overview<p>

ca65html converts assembler source files written for use with the <tt/<htmlurl
url="ca65.html" name="ca65">/ crossassembler into HTML. It is a standalone
tool written in Perl, and as such it does not understand the structure of
assembler sources in the same depth as ca65 does, so it may fail in very rare
cases. In all other cases it generates very nice output.


<sect>Usage<p>


<sect1>Command line option overview<p>

The HTML converter accepts the following options:

<tscreen><verb>
---------------------------------------------------------------------------
Usage: ca65html [options] file ...
Options:
  --bgcolor c        Use background color c instead of #FFFFFF
  --colorize         Colorize the output (generates non standard HTML)
  --commentcolor c   Use color c for comments instead of #B22222
  --crefs            Generate references to the C source file(s)
  --ctrlcolor c      Use color c for directives instead of #228B22
  --cvttabs          Convert tabs to spaces in the output
  --help             This text
  --htmldir dir      Specify directory for HTML files
  --indexcols n      Use n columns on index page (default 6)
  --indexname file   Use file for the index file instead of index.html
  --indexpage        Create an index page
  --indextitle title Use title as the index title instead of Index
  --keywordcolor c   Use color c for keywords instead of #A020F0
  --linelabels       Generate a linexxx HTML label for each line
  --linenumbers      Add line numbers to the output
  --linkstyle style  Use the given link style
  --replaceext       Replace source extension instead of appending .html
  --textcolor c      Use text color c instead of #000000
  --verbose          Be more verbose
---------------------------------------------------------------------------
</verb></tscreen>


<sect1>Command line options in detail<p>

Here is a description of all the command line options:

<descrip>

  <tag><tt>--bgcolor c</tt></tag>

  Set the background color. The argument c must be a valid HTML color, usually
  given as RGB triplet in the form <tt/#rrggbb/, where r, g and b are the
  respective red, green and blue parts as two digit hex values. The default is
  <tt/#FFFFFF/ (white). This color is used in the <tt/&lt;body&gt;/ tag of the
  generated HTML output.


  <tag><tt>--colorize</tt></tag>

  Colorize the output. The converter outputs processor instructions, assembler
  control commands and comments in different colors.

  While this make the output look very nice, it generates invalid HTML,
  because using colors in a <tt/&lt;pre&gt;/ environment is not allowed.
  However, most browsers display it well, and it is used by several other
  tools, so it's up to you.


  <tag><tt>--commentcolor c</tt></tag>

  Set the color used for comments. The argument c must be a valid HTML color,
  usually given as RGB triplet in the form <tt/#rrggbb/, where r, g and b are
  the respective red, green and blue parts as two digit hex values. The
  default is <tt/#B22222/ (red).

  Note that this option has no effect if <tt/--colorize/ is not also given.


  <tag><tt>--crefs</tt></tag>

  Generate references to the C file, when a <tt/.dbg/ command is found with a
  file name. The converter assumes that the C source was also converted into
  HTML (for example by use of <tt/c2html/), has the name <tt/file.c.html/, and
  lives in the same directory as the assembler file. If the <tt/.dbg/
  directive specifies a line, a link to the correct line in the C file is
  generated, using a label in the form <tt/linexxx/, as it is created by
  <tt/c2html/ by use of the <tt/-n/ option.


  <tag><tt>--commentcolor c</tt></tag>

  Set the color used for assembler control commands. The argument c must be a
  valid HTML color, usually given as RGB triplet in the form <tt/#rrggbb/,
  where r, g and b are the respective red, green and blue parts as two digit
  hex values. The default is <tt/#228B22/ (green).

  Note that this option has no effect if <tt/--colorize/ is not also given.


  <tag><tt>--cvttabs</tt></tag>

  Convert tabs in the input into spaces in the output, assuming the standard
  tab width of 8. This is useful if the <tt/--linenumbers/ option is used to
  retain the indentation.


  <tag><tt>--help</tt></tag>

  Print the command line option summary shown above.


  <tag><tt>--htmldir dir</tt></tag>

  Specify an output directory for the generated HTML files.


  <tag><tt>--indexcols n</tt></tag>

  Use n columns on the index page. This option has no effect if used without
  <tt/--indexpage/.


  <tag><tt>--indexname name</tt></tag>

  Use another index file name instead of <tt/index.html/. This option has no
  effect if used without <tt/--indexpage/.


  <tag><tt>--indexpage</tt></tag>

  Causes the converter to generate an index page listing all label names and
  exports found in the converted files.


  <tag><tt>--indextitle title</tt></tag>

  Use "title" as the title of the index page. This option has no effect if
  used without <tt/--indexpage/.


  <tag><tt>--keywordcolor c</tt></tag>

  Set the color used for processor instructions. The argument c must be a
  valid HTML color, usually given as RGB triplet in the form <tt/#rrggbb/,
  where r, g and b are the respective red, green and blue parts as two digit
  hex values. The default is <tt/#A020F0/ (purple).

  Note that this option has no effect if <tt/--colorize/ is not also given.

  <tag><tt>--linelabels</tt></tag>

  Generate a label for each line using the name <tt/linexxx/ where xxx is the
  number of the line.

  Note: The converter will not make use of this label. Use this option if you
  have other HTML pages referencing the converted assembler file.


  <tag><tt>--linenumbers</tt></tag>

  Generate line numbers on the left side of the output.


  <tag><tt>--linkstyle n</tt></tag>

  Influences the style used when generating links for imports. If n is zero
  (the default), the converter creates a link to the actual symbol if it is
  defined somewhere in the input files. If not, it creates a link to the
  <tt/.import/ statement. If n is one, the converter will always generate a
  HTML link to <tt/.import/ statement.


  <tag><tt>--replaceext</tt></tag>

  Replace the file extension of the input file instead of appending <tt/.html/
  when generating the output file name.


  <tag><tt>--textcolor c</tt></tag>

  Set the color for normal text. The argument c must be a valid HTML color,
  usually given as RGB triplet in the form <tt/#rrggbb/, where r, g and b are
  the respective red, green and blue parts as two digit hex values. The
  default is <tt/#000000/ (black). This color is used in the <tt/&lt;body&gt;/
  tag of the generated HTML output.


  <tag><tt>--verbose</tt></tag>

  Increase the converter verbosity. Without this option, ca65html is quiet
  when working. If you have a slow machine and lots of files to convert, you
  may like a little bit more progress information.

</descrip>
<p>


<sect>Peculiarities<p>

<sect1>Cross links<p>

Since ca65html is able to generate links between modules, the best way to use
it is to supply all modules to it in one run, instead of running each file
separately through it.


<sect1>Include files<p>

For now, ca65html will not read files included with <tt/.include/. Specifying
the include files as normal input files on the command line works in many
cases.


<sect1>Conversion errors<p>

Since ca65html does not really parse the input, but does most of its work
applying text patterns, it doesn't know anything about scoping and advanced
features of the assembler. This means that it may miss a label may choose the
wrong color for an item in rare cases. Since it's just a tool for displaying
sources in a nice form, I think that's ok. Anyway, if you find a conversion
problem, you can send me a short piece of example input code. If possible, I
will fix it.


<sect1>Colorization<p>

While having colors in the output looks really nice, it has two drawbacks:

<enum>

<item>The output is not standard compliant HTML, because <tt/&lt;font&gt;/
tags are use in a <tt/&lt;pre&gt;/ environment. This works with all browsers
I've tested, but it may not work with the one you're using.

<item>Since lots of <tt/&lt;font&gt;/ tags are created in the output, the size
of the output file will literally explode. This seems to be the price, you
have to pay for color...

</enum>


<sect>Bugs/Feedback<p>

If you have problems using the converter, if you find any bugs, or if you're
doing something interesting with the assembler, I would be glad to hear from
you. Feel free to contact me by email (<htmlurl url="mailto:uz@cc65.org"
name="uz@cc65.org">).



<sect>Copyright<p>

ca65html is (C) Copyright 2000-2003 Ullrich von Bassewitz. For its use the
following conditions apply:

This software is provided 'as-is', without any expressed or implied
warranty.  In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

<enum>
<item> 	The origin of this software must not be misrepresented; you must not
       	claim that you wrote the original software. If you use this software
       	in a product, an acknowledgment in the product documentation would be
	appreciated but is not required.
<item>	Altered source versions must be plainly marked as such, and must not
	be misrepresented as being the original software.
<item>	This notice may not be removed or altered from any source
	distribution.
</enum>



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