Custom directive's body not being read properly when the body has directives

srihari_ravi <[email protected]> Wed, 29 May 2013 04:50:36 -0700 (PDT)
Newsgroups gmane.comp.web.freemarker.user
Message-ID <[email protected]> 
Hi, my requirement is to create an output HTML file using a freemarker
template such that the file name, content are specified in the template
itself. The code I am using is shown at the end. What my code does:
1. freemarker template: uses a new @file directive, wraps some HTML tags
2. FileDirective.java (implementation for @file): gets parameters filename
and filepath, simply gets directive's body (everything between <@file> and
</@file>) and writes to the file mentioned in parameters

*Current behavior:* When I include freemarker directives (example: #assign,
#list) in the directive body, the HTML output does not contain the whole
content. The content after the directive is only included. Without a
directive inside it (if body has only plain HTML tags), the output file
contains the complete body. I need the # directives inside the body to
dynamically create some content from the input datamodel.
*Current output:* (source of newFile.html)
	
Test heading...

	Paragraph 1...
	<P>
	Paragraph 2...
    </BODY>
</HTML>

*Expected behavior:* Everything inside the tags <@file> is the directive's
body, so it should be included in the output post resolution of freemarker
specific tags. Expected output is as shown below:
<HTML>
    <HEAD>
        <TITLE>My Page</TITLE>
    </HEAD>
	
Test heading...

	Paragraph 1...
	<P>
	Paragraph 2...
    </BODY>
</HTML>

If in the template below, I move the <#assign> line after "Paragraph 2...",
what I get is this:
    </BODY>
</HTML>


*CODE:
Template:*
<#include "ErrorDoc_Directives.ftl">

<@file name="newFile.html" path="${outputDirectoryPath}">
<HTML>
    <HEAD>
        <TITLE>My Page</TITLE>
    </HEAD>
	<#assign name="test">
	
Test heading...

	Paragraph 1...
	<P>
	Paragraph 2...
    </BODY>
</HTML>
</@file>

*Directive:*
public class FileDirective implements TemplateDirectiveModel {
    private static final String PARAM_NAME_NAME = "name";
    private static final String PARAM_NAME_PATH = "path";

    @Override
    public void execute(Environment environment, Map params, TemplateModel[]
templateModels,
                        TemplateDirectiveBody templateDirectiveBody) {
        // Process parameters
        Iterator paramIter = params.entrySet().iterator();
        String fileName = null;
        String filePath = null;

        while (paramIter.hasNext()) {
            Map.Entry ent = (Map.Entry)paramIter.next();
            String paramName = (String)ent.getKey();
            TemplateModel paramValue = (TemplateModel)ent.getValue();

            switch (paramName) {
            case PARAM_NAME_NAME:
                fileName = ((SimpleScalar)paramValue).getAsString();
                break;
            case PARAM_NAME_PATH:
                filePath = ((SimpleScalar)paramValue).getAsString();
                break;
            }
        }

        Writer fileWriter;
        try {
            fileWriter = new FileWriter(new File(fileName));
            templateDirectiveBody.render(new OutputFileWriter(fileName,
filePath)); // use a custom writer to write to an external file defined by
fileName & filePath
        } catch (Exception e) {
            System.out.println("EXCEPTION RENDERING THE OUTPUT");
        }
    }

    private static class OutputFileWriter extends Writer {
        private final String fileName;
        private final String filePath;

        OutputFileWriter(String fileName, String filePath) {
            this.fileName = fileName;
            this.filePath = filePath;
        }

        @Override
        public void write(char[] cbuf, int off, int len) {
            File file = new File(filePath + "/" + fileName);
            FileWriter fw;
            BufferedWriter bw = null;
            try {
                fw = new FileWriter(file.getAbsoluteFile());
                bw = new BufferedWriter(fw);
                bw.write(cbuf);
                bw.close();
            } catch (IOException e) {
                System.out.println("Exception caught while working with the
buffer writer...\n");
                e.printStackTrace();
                if (bw != null) {
                    try {
                        bw.close();
                    } catch (IOException f) {
                        System.out.println("Exception caught while closing
the buffer writer...");
                    }
                }
            }
        }
    }
}

PS: I apologize for the post being so long! :)



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