From 70dc72e47750d5005f3767848770c17d2e1a57bc Mon Sep 17 00:00:00 2001
From: Alex Knox <alex@austin.utexas.edu>
Date: Thu, 18 Jul 2024 11:53:01 -0500
Subject: [PATCH] allow escape sequences

---
 .../evolveum/polygon/connector/csv/util/Util.java   | 13 +++++++++++++
 .../polygon/connector/csv/ConfigurationTest.java    | 12 ++++++++++++
 src/test/resources/create-tabs.tsv                  |  2 ++
 3 files changed, 27 insertions(+)
 create mode 100644 src/test/resources/create-tabs.tsv

diff --git a/src/main/java/com/evolveum/polygon/connector/csv/util/Util.java b/src/main/java/com/evolveum/polygon/connector/csv/util/Util.java
index d157226..c11767b 100644
--- a/src/main/java/com/evolveum/polygon/connector/csv/util/Util.java
+++ b/src/main/java/com/evolveum/polygon/connector/csv/util/Util.java
@@ -226,6 +226,19 @@ public static Character toCharacter(String value) {
             return null;
         }
 
+        if (value.length() == 2 && value.startsWith("\\")) {
+            // This is likely to be an escape sequence, like \t
+            // We'll take advantage of Properties to convert this to a character
+            Properties props = new Properties();
+            try {
+                props.load(new StringReader("key=" + value));
+            } catch (IOException ex) {
+                throw new ConfigurationException("Can't cast to character, reason: " + ex.getMessage(), ex);
+            }
+
+            value = props.getProperty("key");
+        }
+
         if (value.length() != 1) {
             throw new ConfigurationException("Can't cast to character, illegal string size: "
                     + value.length() + ", should be 1");
diff --git a/src/test/java/com/evolveum/polygon/connector/csv/ConfigurationTest.java b/src/test/java/com/evolveum/polygon/connector/csv/ConfigurationTest.java
index 464ec94..e007e8e 100644
--- a/src/test/java/com/evolveum/polygon/connector/csv/ConfigurationTest.java
+++ b/src/test/java/com/evolveum/polygon/connector/csv/ConfigurationTest.java
@@ -49,4 +49,16 @@ public void testMissingMultivalueDelimiter() throws Exception {
         ConnectorFacade connector = setupConnector("/create.csv", config);
         connector.test();
     }
+
+    @Test
+    public void testTabDelimiter() throws Exception {
+        CsvConfiguration config = new CsvConfiguration();
+        config.setUniqueAttribute("uid");
+        config.setFieldDelimiter("\\t");
+        config.setReadOnly(true);
+
+        ConnectorFacade connector = setupConnector("/create-tabs.tsv", config);
+        connector.test();
+
+    }
 }
diff --git a/src/test/resources/create-tabs.tsv b/src/test/resources/create-tabs.tsv
new file mode 100644
index 0000000..f7e4738
--- /dev/null
+++ b/src/test/resources/create-tabs.tsv
@@ -0,0 +1,2 @@
+firstName	uid	lastName	password
+john	123	doe	qwe123
\ No newline at end of file