Mercurial > hg > xslscript


This code is a replacement for XSLScript, previously available from
http://pault.com/pault/XSLScript/.  It is not recommended for general
use, but rather a replacement for what is used by nginx.

Snapshot of the original XSLScript documentation is given below,
as recovered from:

http://moemesto.ru/link/6865082
http://moemesto.ru/philonov/page/6865082/download/INODE.RU%20/%20ProgrammaZm%20/%20XSLScript%20-%20%D0%B7%D0%B0%D0%BC%D0%B5%D0%BD%D0%B0%20XSLT

###############################################################################

Since Year 2000
Version 0.7
Check out TerseXML project

XSLScript is for those, who are writing complex XSLT stylesheets.

XSLScript is a terse notation for writing complex XSLT stylesheets.
XSLScript is part of  Hiawatha web-server, but XSLScript also can be
used stand-alone.

To execute XSLScript script:

xsls some.xml some.xsls

The XSLScript script (some.xsls) gets compiled into corresponding XSLT
stylesheet and then generated XSLT stylesheet is applied to the file
some.xml (no temporary .xsl file is created, this all happens in the
memory). The actual XSLT tranformation is performed by SAXON. There is
1-1 lines mapping between XSLScript script and generated XSLT ( this
means if some XSLScript construction starts on line 5, the corresponding
XSLT construction will also start on the same line 5. )

To generate the XSLT stylesheet out of XSLScript script:

xslsdump some.xsls
or

xslsdump-indent some.xsls
if you want a nice looking indentation.

Why XSLScript ?

XSLT syntax is not for human beings.

One can write complex XSLT code in XSLScript and then generate the 100%
XSLT stylesheet. Like I do. Occasionaly.

Can I use my XSLT stylesheets with XSLScript?

You can use xsl:import / xsl:include to include .xsl into .xsls and to
include .xsls into .xsl.

What if I like writing <xsl:something?

You can write XSLT instructions in plain XSLT, XSLScript preprocessor
will not touch them and will pass those constructions as-is.

Top-level elements should be plain XSLScript.

What is XSLScript ?

XSLScript is just syntax sugar, 1-1 mapping of XSLT. The only exception
is that XSLScript has 'else' (which is missing in XSLT). In XSLScript
if-else is translated into appropriate xsl:choose-when-otherwise.
XSLScript could get more 'non-xslt' semantics if you ask me for
something you need.

OK, but what is XSLScript ?

Snippet 1

X:stylesheet {

X:template = "poem" {
	<html>
	<head>
		<title> !{title} </title>
	</head>
	<body>
		!! "title";
		!! "author";
		X:apply-templates "stanza";
		X:apply-templates "date";
	</body>
	</html>
}

X:template = "title"  { <div align="center"><h1> !{.} </h1></div> }
X:template = "author" { <div align="center"><h2> By <% !{.} %> </h2></div> }
X:template = "stanza" { <p> !! "line"; </p> }

X:template = "line" {
    X:if "position() mod 2 = 0" {&#160;&#160;}
    !{.} <br/>
}

X:template = "date" { <p><i> !{.} </i></p> }

}


Snippet 2

X:transform {

X:template max( list ) {
    X:if "$list" {
	   X:variable first="count($list[1]/LINE)"
	   X:variable max-of-rest={ !max( list="$list[position()!=1]" ) }

	   X:if "$first &gt; $max-of-rest"  {
		!{$first}
	   } else {
		!{$max-of-rest}
	   }
    } else {
	   0
    }
}

 X:template ="/" {
  Longest speech is <% X:text; !max( list="//SPEECH" ) X:text; %> lines.
 }

}

Syntax overview

Rather than drawing the mapping for all of 35 XSLT elements, I'l just
provide the mapping rules. If this is not enough, please note that
XSLScript distribution contains more than 10 examples of XSLScript code.
Those examples are XSLT stylesheets from Michael Kay's XSLT Programming
Reference (available for download from Wrox website) rewritten in
XSLScript. This results in XSLScript examples being educational and
covering almost every XSLT (XSLScript) command.

Rules

There are top-level XSLScript constructions and instructions. (exactly
like it is in XSLT). Instructions could be separated from the content
with <% and %> ( optional ).

Instruction has body and header. Body is separated from header with { }
'match', 'select', 'test' and 'name' are not written (but also could be
written in some exotic cases.)

Symbols ', ", {, are special. Use \{ e t.c. if you need those special
symbols in tne content of your stylesheet.

xsl:apply-templates, !! and xsl:number should end with ";"

Syntax of apply-templates is extremely close to the syntax of
call-template.

There are few shortcuts:
You can use !{xpath-expression} for
X:value-of select="xpath-expression";
!! for X:apply-templates
!foo() for X:call-template name="foo"
X:var for X:variable

There is 'comma' shortcut. It exists for X:stylesheet (see date.xsls for
example of XSLT-engine independent java binding). And also it exists for
X:for-each and X:apply-templates.

X:for-each "//*" , X:sort {

You can not write X:sort as an element, but you should use 'comma'
shortcut.

The shortcut for template allows :
X:template foo( bar="init", baz={markup} ) = "match" mode="some" {
Download

Because SAXON (http://users.iclway.co.uk/mhkay/saxon/) is 100% free,
XSLScript distribution contains everything you need to run XSLScript.

xsls.jar includes not only .class files, but also the source code of
XSLScript

XSLScript is 100% free.

Contact

Paul Tchistopolskii.
http://www.pault.com
paul@pault.com

Changes in version 0.7

(major rewrite)

<% %> are optional.
Some verbose forms are dropped ( no X:with-param and call-template ever,
e t.c. )
Parser is less forgiving and some things become not intuitive.
\{ \' " required.
Nice dumping of generated stylesheet.
1-1 line mapping.
Based on SAXON / SAX2, but still should work with XT.
Changes in version 0.51

(small bugfixes)

':' was not allowed in #NAME token. ( Allows xmlns:some= )
Multiple <!-- comments bugfixed.
\{ bugfixed and \' allowed. This is actually not obvious, I should
explain how to use \{ and \' ... some day ...
Few examples from XSL-list are included.

###############################################################################
author	Maxim Dounin <mdounin@mdounin.ru>
date	Thu, 27 Feb 2014 21:19:33 +0400
parents	xslscript.txt@d3340fdeadf6
children