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feat: add escaping strategy for JSON #1077

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feat: add escaping strategy for JSON #1077

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4 changes: 4 additions & 0 deletions handlebars/src/main/java/com/github/jknack/handlebars/EscapingStrategy.java
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Original file line number Diff line number Diff line change
Expand Up @@ -141,6 +141,10 @@ private static Map<CharSequence, CharSequence> escapeMap(final String[][] table)
EscapingStrategy JS = value ->
value == null ? null : StringEscapeUtils.escapeEcmaScript(value.toString());

/** Escape variable for JSON. */
EscapingStrategy JSON = value ->
value == null ? null : StringEscapeUtils.escapeJson(value.toString());

/** NOOP escaping. */
EscapingStrategy NOOP = value -> value;

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18 changes: 18 additions & 0 deletions handlebars/src/test/java/com/github/jknack/handlebars/EscapingStrategyTest.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,18 @@
package com.github.jknack.handlebars;

import org.junit.Test;

import java.io.IOException;

import static org.junit.Assert.assertEquals;

public class EscapingStrategyTest {
@Test
public void shouldEscapeVariableForJSON() throws IOException {
Template template = new Handlebars().with(EscapingStrategy.JSON).compileInline("{{this}}");

assertEquals("\\\"", template.apply("\""));
assertEquals("\\\\", template.apply("\\"));
assertEquals("\\/", template.apply("/"));
}
}