NAME¶
trang - convert between different schema languages for XML
SYNOPSIS¶
trang [
-I rng|
rnc|
dtd|
xml] [
-O
rng|
rnc|
dtd|
xsd] [
-i input-param]
[
-o output-param]
input-file ...
output-file
DESCRIPTION¶
trang takes as input a schema written in any of the following formats:
- RELAX NG (XML syntax)
- RELAX NG (compact syntax)
- XML 1.0 DTD
and produces as output a schema written in any of the following formats:
- RELAX NG (XML syntax)
- RELAX NG (compact syntax)
- XML 1.0 DTD
- W3C XML Schema
Trang can also infer a schema from one or more example XML documents.
Trang uses an internal representation based on RELAX NG. For each supported
input format, there is an input module that converts a schema in that input
format into this internal representation. For each supported output format,
there is an output module that converts the internal representation into a
schema in that output format. Thus, any supported input format can be
translated to any supported output format.
Trang requires two command-line arguments: the first is the URI or filename of
the schema to be translated; the second is the output filename.
Trang infers the input and output modules to be used from the extension of input
and output filenames as follows:
- .rng
- RELAX NG (XML syntax)
- .rnc
- RELAX NG (compact syntax)
- .dtd
- XML 1.0 DTD
- .xsd
- W3C XML Schema
- .xml
- XML documents (used as examples from which to infer a schema)
This inference can be overridden using the
-I and
-O options.
When the input is XML documents used as examples to infer a schema, more than
one input file may be specified as arguments. All the input files are
specified before the output file.
OPTIONS¶
- -I rng|rnc|dtd|xml
- Specifies which input module to use.
- -O rng|rnc|dtd|xsd
- Specifies which output module to use.
- -i input-param
- -o output-param
- Specifies a parameter for an input (-i) or output (-o)
module. The -i and -o options may be used multiple times in
order to specify multiple parameters. There are two kinds of parameter:
boolean parameters and string-valued parameters. A string-valued parameter
is specified using the form name=value. A boolean
parameter is specified using the form name or
no-name. The applicable parameters depend on the particular
input and output module. For details, see the HTML documentation.
SEE ALSO¶
jing(1)
Trang Manual
http://relaxng.org
AUTHOR¶
James Clark (jjc@jclark.com)
This product includes software developed by the Apache Software Foundation
(
http://www.apache.org/).