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digitalmars.D.learn - Experimental xml set up

reply Begah <mathieu.roux222 gmail.com> writes:
To load up 3D models in my application, i decided to use the 
COLLADA model format, to do that i need to be able to extract 
information out of an xml file.

Since std.xml is going to be deprecated eventually, is opted to 
try and use std.experiment.xml.

So i created a test project and added this dependency to dub.json 
:
"std-experimental-xml": "~>0.1.2"

I then tried and compiled the exemple i found on the xml wiki at 
https://lodo1995.github.io/experimental.xml/std/experimental/xml.html

Code :
// Made sure I imported Everything
import std.experimental.xml.appender;
import std.experimental.xml.cursor;
import std.experimental.xml.dom;
import std.experimental.xml.domimpl;
import std.experimental.xml.domparser;
import std.experimental.xml.dtd;
import std.experimental.xml.faststrings;
import std.experimental.xml.interfaces;
import std.experimental.xml.lexers;
import std.experimental.xml.parser;
import std.experimental.xml.sax;
import std.experimental.xml.validation;
import std.experimental.xml.writer;
import std.experimental.xml.legacy;
import std.stdio;

void main() {
	string input = q"{
		<?xml version = "1.0"?>
		<books>
		   <book ISBN = "078-5342635362">
			   <title>The D Programming Language</title>
			   <author>A. Alexandrescu</author>
		   </book>
		   <book ISBN = "978-1515074601">
			   <title>Programming in D</title>
			   <author>Ali Çehreli</author>
		   </book>
		   <book ISBN = "978-0201704310">
			   <title>Modern C++ Design</title>
			   <author>A. Alexandrescu</author>
		   </book>
		</books>
	}";

	// the following steps are all configurable
	auto domBuilder =
		input
	   .lexer              // instantiate the best lexer based on 
the type of input
	   .parser             // instantiate a parser on top of the 
lexer
	   .cursor             // instantiate a cursor on top of the 
parser
	   .domBuilder;        // and finally the DOM builder on top of 
the cursor

	// the source is forwarded down the parsing chain and everything 
is initialized
	domBuilder.setSource(input);

	// recursively build the entire DOM tree
	domBuilder.buildRecursive;
	auto dom = domBuilder.getDocument;

	// find and substitute all matching authors
	foreach (author; dom.getElementsByTagName("author"))
	   if (author.textContent == "A. Alexandrescu")
		   author.textContent = "Andrei Alexandrescu";

	// write it out to "catalogue.xml"
	auto file = File("catalogue.xml", "w");
	file.lockingTextWriter
		.writerFor!string   // instatiates an xml writer on top of an 
output range
		.writeDOM(dom);     // write the document with all of its 
children

	readln();
}

When trying to compile, i get the following error :
Error: no property 'lexer' for type 'string'

There are also a lot of variable types not recognized by the 
compiler.

Is the wiki example completely outdated or am i missing something?
Apr 02 2017
parent reply rikki cattermole <rikki cattermole.co.nz> writes:
On 02/04/2017 2:58 PM, Begah wrote:

 To load up 3D models in my application, i decided to use the COLLADA
 model format, to do that i need to be able to extract information out of
 an xml file.

 Since std.xml is going to be deprecated eventually, is opted to try and
 use std.experiment.xml.

 So i created a test project and added this dependency to dub.json :
 "std-experimental-xml": "~>0.1.2"

 I then tried and compiled the exemple i found on the xml wiki at
 https://lodo1995.github.io/experimental.xml/std/experimental/xml.html

 Code :
 // Made sure I imported Everything
 import std.experimental.xml.appender;
 import std.experimental.xml.cursor;
 import std.experimental.xml.dom;
 import std.experimental.xml.domimpl;
 import std.experimental.xml.domparser;
 import std.experimental.xml.dtd;
 import std.experimental.xml.faststrings;
 import std.experimental.xml.interfaces;
 import std.experimental.xml.lexers;
 import std.experimental.xml.parser;
 import std.experimental.xml.sax;
 import std.experimental.xml.validation;
 import std.experimental.xml.writer;
 import std.experimental.xml.legacy;
 import std.stdio;

 void main() {
     string input = q"{
         <?xml version = "1.0"?>
         <books>
            <book ISBN = "078-5342635362">
                <title>The D Programming Language</title>
                <author>A. Alexandrescu</author>
            </book>
            <book ISBN = "978-1515074601">
                <title>Programming in D</title>
                <author>Ali Çehreli</author>
            </book>
            <book ISBN = "978-0201704310">
                <title>Modern C++ Design</title>
                <author>A. Alexandrescu</author>
            </book>
         </books>
     }";

     // the following steps are all configurable
     auto domBuilder =
         input
        .lexer              // instantiate the best lexer based on the
 type of input
        .parser             // instantiate a parser on top of the lexer
        .cursor             // instantiate a cursor on top of the parser
        .domBuilder;        // and finally the DOM builder on top of the
 cursor

     // the source is forwarded down the parsing chain and everything is
 initialized
     domBuilder.setSource(input);

     // recursively build the entire DOM tree
     domBuilder.buildRecursive;
     auto dom = domBuilder.getDocument;

     // find and substitute all matching authors
     foreach (author; dom.getElementsByTagName("author"))
        if (author.textContent == "A. Alexandrescu")
            author.textContent = "Andrei Alexandrescu";

     // write it out to "catalogue.xml"
     auto file = File("catalogue.xml", "w");
     file.lockingTextWriter
         .writerFor!string   // instatiates an xml writer on top of an
 output range
         .writeDOM(dom);     // write the document with all of its children

     readln();
 }

 When trying to compile, i get the following error :
 Error: no property 'lexer' for type 'string'

 There are also a lot of variable types not recognized by the compiler.

 Is the wiki example completely outdated or am i missing something?


Quite out of date.

Here is some code that worked for me:

string raw_input = ...;

	auto domBuilder = raw_input
		.lexer
			.parser
			.cursor((CursorError err){})
			.domBuilder;
	domBuilder.setSource(raw_input);
	domBuilder.buildRecursive;
	auto dom = domBuilder.getDocument;
Apr 02 2017
parent Begah <mathieu.roux222 gmail.com> writes:
On Sunday, 2 April 2017 at 14:15:50 UTC, rikki cattermole wrote:

 On 02/04/2017 2:58 PM, Begah wrote:

 [...]


 Quite out of date.

 Here is some code that worked for me:

 string raw_input = ...;

 	auto domBuilder = raw_input
 		.lexer
 			.parser
 			.cursor((CursorError err){})
 			.domBuilder;
 	domBuilder.setSource(raw_input);
 	domBuilder.buildRecursive;
 	auto dom = domBuilder.getDocument;


Dub/Dmd still complains that there is no property/function 
'lexer' for type string.
Apr 02 2017