Merge Argeo Util and parts of Argeo JCR in Argeo Core.

[lgpl/argeo-commons.git] / org.argeo.core / src / org / argeo / util / CsvParserWithLinesAsMap.java

diff --git a/org.argeo.core/src/org/argeo/util/CsvParserWithLinesAsMap.java b/org.argeo.core/src/org/argeo/util/CsvParserWithLinesAsMap.java
new file mode 100644 (file)
index 0000000..8eb6e94
--- /dev/null
+++ b/org.argeo.core/src/org/argeo/util/CsvParserWithLinesAsMap.java
@@ -0,0 +1,36 @@
+package org.argeo.util;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * CSV parser allowing to process lines as maps whose keys are the header
+ * fields.
+ */
+public abstract class CsvParserWithLinesAsMap extends CsvParser {
+
+       /**
+        * Actually processes a line.
+        * 
+        * @param lineNumber the current line number, starts at 1 (the header, if header
+        *                   processing is enabled, the first lien otherwise)
+        * @param line       the parsed tokens as a map whose keys are the header fields
+        */
+       protected abstract void processLine(Integer lineNumber, Map<String, String> line);
+
+       protected final void processLine(Integer lineNumber, List<String> header, List<String> tokens) {
+               if (header == null)
+                       throw new IllegalArgumentException("Only CSV with header is supported");
+               Map<String, String> line = new HashMap<String, String>();
+               for (int i = 0; i < header.size(); i++) {
+                       String key = header.get(i);
+                       String value = null;
+                       if (i < tokens.size())
+                               value = tokens.get(i);
+                       line.put(key, value);
+               }
+               processLine(lineNumber, line);
+       }
+
+}