From fad3f801a3dc1185779b8c7b8b9442811aaa1982 Mon Sep 17 00:00:00 2001
From: Andrew Harvey <andrew@alantgeo.com.au>
Date: Fri, 7 May 2021 22:36:33 +1000
Subject: because OSM tag values are limited to 255 characters, implement code
 to split addr:flats across addr:flatsN

---
 lib/valueLimits.js | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 lib/valueLimits.js

(limited to 'lib/valueLimits.js')

diff --git a/lib/valueLimits.js b/lib/valueLimits.js
new file mode 100644
index 0000000..c902883
--- /dev/null
+++ b/lib/valueLimits.js
@@ -0,0 +1,17 @@
+/**
+ * In OSM tag values are limited to 255 characters.
+ * Search for addr:flats beyond that limit and wrap into addr:flats2 addr:flats3 etc.
+ * 
+ * @param {Object} feature 
+ * @returns {boolean}
+ */
+module.exports = (feature) => {
+  if ('addr:flats' in feature.properties && feature.properties['addr:flats'].length > 255) {
+    // need to wrap
+    const value = feature.properties['addr:flats']
+    for (let i = 0; i < value.length; i += 255) {
+      feature.properties[`addr:flats${i === 0 ? '' : i / 255 + 1}`] = value.slice(i, i + 255)
+    }
+  }
+  return feature
+}
-- 
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