vy commented on code in PR #820:
URL: https://github.com/apache/logging-log4j2/pull/820#discussion_r851453305
##########
log4j-slf4j20-impl/src/main/java/org/apache/logging/slf4j/Log4jMDCAdapter.java:
##########
@@ -16,16 +16,87 @@
*/
package org.apache.logging.slf4j;
+import java.util.ArrayDeque;
+import java.util.Deque;
import java.util.Map;
+import java.util.Objects;
+import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.ThreadContext;
+import org.apache.logging.log4j.status.StatusLogger;
+import org.apache.logging.log4j.util.Strings;
import org.slf4j.spi.MDCAdapter;
/**
*
*/
public class Log4jMDCAdapter implements MDCAdapter {
+ private static final Logger LOGGER = StatusLogger.getLogger();
+
+ private static final char QUOTE_CHAR = '\"';
+ private static final char ESCAPE_CHAR = '\\';
+ private static final char ARRAY_START = '[';
+ private static final char ARRAY_SEP = ',';
+ private static final char ARRAY_END = ']';
+ private static final String EMPTY_ARRAY = "[]";
+
+ /**
+ * Quotes a string using a simplified JSON quoting mechanism.
+ */
+ static void quoteString(final CharSequence value, final StringBuilder
output) {
+ output.append(QUOTE_CHAR);
+ int i = 0;
+ while (i < value.length()) {
+ final char c = value.charAt(i);
+ switch (c) {
+ case ESCAPE_CHAR:
+ case QUOTE_CHAR:
+ output.append(ESCAPE_CHAR);
+ // intentional fall through
+ default:
+ output.append(c);
+ }
+ i++;
+ }
+ output.append(QUOTE_CHAR);
+ }
+
+ /**
+ * Splits a valid and non empty JSON array into a head and tail part.
Unicode
+ * escapes are not supported.
+ */
+ static void splitString(final char[] value, final String[] output) throws
ArrayIndexOutOfBoundsException {
Review Comment:
I think we have a misunderstanding. I had the idea that JSON reader/writer
classes will be in the `-core` and `-slf4j20-impl` can very well depend on it.
Why do you need them to be in `-api`?
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