LinkedHashMap instead of Properties. Addresses #1289

Author: AngledLuffa

src/edu/stanford/nlp/process/PTBLexer.flex

@@ -28,9 +28,9 @@ package edu.stanford.nlp.process;
 
 import java.io.Reader;
 import java.text.Normalizer;
+import java.util.LinkedHashMap;
 import java.util.Locale;
 import java.util.Map;
-import java.util.Properties;
 import java.util.Set;
 import java.util.regex.Pattern;
 
@@ -139,11 +139,11 @@ import edu.stanford.nlp.util.logging.Redwood;
         if (options == null) {
           options = "";
         }
-        Properties prop = StringUtils.stringToProperties(options);
-        Set<Map.Entry<Object,Object>> props = prop.entrySet();
-        for (Map.Entry<Object,Object> item : props) {
-          String key = (String) item.getKey();
-          String value = (String) item.getValue();
+        LinkedHashMap<String, String> prop = StringUtils.stringToPropertiesMap(options);
+        Set<Map.Entry<String, String>> props = prop.entrySet();
+        for (Map.Entry<String, String> item : props) {
+          String key = item.getKey();
+          String value = item.getValue();
           boolean val = Boolean.parseBoolean(value);
           if ("".equals(key)) {
             // allow an empty item

src/edu/stanford/nlp/process/PTBLexer.java

@@ -32,9 +32,9 @@
 
 import java.io.Reader;
 import java.text.Normalizer;
+import java.util.LinkedHashMap;
 import java.util.Locale;
 import java.util.Map;
-import java.util.Properties;
 import java.util.Set;
 import java.util.regex.Pattern;
 
@@ -60954,11 +60954,11 @@ public PTBLexer(Reader r, LexedTokenFactory<?> tf, String options) {
         if (options == null) {
           options = "";
         }
-        Properties prop = StringUtils.stringToProperties(options);
-        Set<Map.Entry<Object,Object>> props = prop.entrySet();
-        for (Map.Entry<Object,Object> item : props) {
-          String key = (String) item.getKey();
-          String value = (String) item.getValue();
+        LinkedHashMap<String, String> prop = StringUtils.stringToPropertiesMap(options);
+        Set<Map.Entry<String, String>> props = prop.entrySet();
+        for (Map.Entry<String, String> item : props) {
+          String key = item.getKey();
+          String value = item.getValue();
           boolean val = Boolean.parseBoolean(value);
           if ("".equals(key)) {
             // allow an empty item

src/edu/stanford/nlp/util/StringUtils.java

@@ -1136,6 +1136,35 @@ public static Properties stringToProperties(String str, Properties props) {
     return props;
   }
 
+  /**
+   * This method updates a LinkedHashMap based on
+   * a comma-separated String (with whitespace
+   * optionally allowed after the comma) representing properties
+   * to a Properties object.  Each property is "property=value".  The value
+   * for properties without an explicitly given value is set to "true".
+   *
+   * TODO: remove the stringToProperties version
+   */
+  public static LinkedHashMap<String, String> stringToPropertiesMap(String str) {
+    LinkedHashMap<String, String> props = new LinkedHashMap<>();
+
+    String[] propsStr = str.trim().split(",\\s*");
+    for (String term : propsStr) {
+      int divLoc = term.indexOf('=');
+      String key;
+      String value;
+      if (divLoc >= 0) {
+        key = term.substring(0, divLoc).trim();
+        value = term.substring(divLoc + 1).trim();
+      } else {
+        key = term.trim();
+        value = "true";
+      }
+      props.put(key, value);
+    }
+    return props;
+  }
+
   /**
    * If any of the given list of properties are not found, returns the
    * name of that property.  Otherwise, returns null.