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Add base64Encode handlebars helper #4925

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merged 3 commits into from
Sep 26, 2024
Merged

Add base64Encode handlebars helper #4925

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adfd931
Add base64Encode handlebars helper
fishface60 Sep 15, 2024
e6eed10
Merge branch 'develop' into develop
cwisniew Sep 26, 2024
22d7b47
Merge branch 'develop' into develop
cwisniew Sep 26, 2024
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28 changes: 28 additions & 0 deletions src/main/java/net/rptools/maptool/util/HandlebarsUtil.java
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,8 @@

import com.github.jknack.handlebars.Context;
import com.github.jknack.handlebars.Handlebars;
import com.github.jknack.handlebars.Helper;
import com.github.jknack.handlebars.Options;
import com.github.jknack.handlebars.Template;
import com.github.jknack.handlebars.context.JavaBeanValueResolver;
import com.github.jknack.handlebars.helper.AssignHelper;
Expand All @@ -29,8 +31,10 @@
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.Base64;
import net.rptools.maptool.model.Token;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
Expand Down Expand Up @@ -95,6 +99,29 @@ protected URL getResource(String location) throws IOException {
}
}

private static enum MapToolHelpers implements Helper<Object> {
/**
* Turns the textual form of the value into a base64-encoded string. For example:
*
* <pre>
* &lt;script type="application/json;base64" id="jsonProperty"&gt;
* {{ base64Encode properties[0].value }}
* &lt;/script&gt;
* &lt;script type="application/javascript"&gt;
* const jsonProperty = JSON.parse(atob(document.getElementById("jsonProperty").innerText));
* &lt;/script&gt;
* </pre>
*/
base64Encode {
@Override
public Object apply(final Object context, final Options options) {
byte[] message = context.toString().getBytes(StandardCharsets.UTF_8);

return new Handlebars.SafeString(Base64.getUrlEncoder().encodeToString(message));
}
}
}

/**
* Creates a new instance of the utility class.
*
Expand All @@ -111,6 +138,7 @@ private HandlebarsUtil(String stringTemplate, TemplateLoader loader) throws IOEx
NumberHelper.register(handlebars);
handlebars.registerHelper(AssignHelper.NAME, AssignHelper.INSTANCE);
handlebars.registerHelper(IncludeHelper.NAME, IncludeHelper.INSTANCE);
Arrays.stream(MapToolHelpers.values()).forEach(h -> handlebars.registerHelper(h.name(), h));

template = handlebars.compileInline(stringTemplate);
} catch (IOException e) {
Expand Down
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