Maybe I missed something obvious in the docs but how can I just parse the XML and print its content?

import dxml.parser;

auto xml = parseXML!simpleXML(layout);
xml.map!(e => e.text).join.writeln;

throws core.exception.AssertError@../../../.dub/packages/dxml-0.4.3/dxml/source/dxml/parser.d(1457): text cannot be called with elementStart.

Maybe I missed something obvious in the docs but how can I just parse the XML and print its content?

import dxml.parser;

auto xml = parseXML!simpleXML(layout);
xml.map!(e => e.text).join.writeln;

throws core.exception.AssertError@../../../.dub/packages/dxml-0.4.3/dxml/source/dxml/parser.d(1457): text cannot be called with elementStart.

On Thursday, 9 September 2021 at 17:17:23 UTC, tastyminerals wrote:

dxml.parser is a streaming XML parser. The documentation at http://jmdavisprog.com/docs/dxml/0.4.0/dxml_parser.html has a link to more information about this at the top, behind 'StAX'. Thus, when you're mapping over xml, you're not getting <a>some text</a> at a time, but <a>, some text, and </a> separately, as they're parsed. The <a> there is an elementStart which lacks a text, hence the error.

[...]

On Thursday, 9 September 2021 at 18:40:53 UTC, jfondren wrote:

That's a nice trick you did there

On Thursday, 9 September 2021 at 17:17:23 UTC, tastyminerals wrote:

dxml.parser is a streaming XML parser. The documentation at http://jmdavisprog.com/docs/dxml/0.4.0/dxml_parser.html has a link to more information about this at the top, behind 'StAX'. Thus, when you're mapping over xml, you're not getting <a>some text</a> at a time, but <a>, some text, and </a> separately, as they're parsed. The <a> there is an elementStart which lacks a text, hence the error.

Here's a script:

#! /usr/bin/env dub
/++ dub.sdl:
    dependency "dxml" version="0.4.0"
    stringImportPaths "."
+/
import dxml.parser;
import std;

enum text = import(__FILE__)
    .splitLines
    .find("__EOF__")
    .drop(1)
    .join("\n");

void main() {
    foreach (entity; parseXML!simpleXML(text)) {
        if (entity.type == EntityType.text)
            writeln(entity.text.strip);
    }
}
__EOF__
<!-- comment -->
<root>
    <foo>some text<whatever/></foo>
    <bar/>
    <baz></baz>
    more text
</root>

that runs with this output:

some text
more text

On Thursday, 9 September 2021 at 23:29:56 UTC, Imperatorn wrote:

Something in the quoted text?

Or if you mean the self-string-importing script that uses the content after __EOF__ , yeah, that's in imitation of Perl's __DATA__ https://perldoc.perl.org/perldata#Special-Literals

As for the dxml, I believe adding a small quick start example would be very beneficial for the newcomers. Especially, ppl like me who are not aware of the XML parser types and just need to extract text from an XML file.