From c992100a388acdacec636431bad440f0f036dd25 Mon Sep 17 00:00:00 2001
From: Peli de Halleux <pelikhan@users.noreply.github.com>
Date: Thu, 11 Jan 2018 21:36:43 -0800
Subject: [PATCH] added option to append CSV headers

---
 .../_locales/storage-jsdoc-strings.json        |  5 ++++-
 libs/storage/_locales/storage-strings.json     |  1 +
 libs/storage/storage-core.ts                   | 18 +++++++++++++++++-
 3 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/libs/storage/_locales/storage-jsdoc-strings.json b/libs/storage/_locales/storage-jsdoc-strings.json
index cd0cd6fb..e6a246f3 100644
--- a/libs/storage/_locales/storage-jsdoc-strings.json
+++ b/libs/storage/_locales/storage-jsdoc-strings.json
@@ -2,8 +2,11 @@
   "storage.Storage.append": "Append string data to a new or existing file.",
   "storage.Storage.appendBuffer": "Append a buffer to a new or existing file.",
   "storage.Storage.appendCSV": "Append a row of CSV data",
+  "storage.Storage.appendCSVHeaders": "Append a row of CSV headers",
+  "storage.Storage.appendCSVHeaders|param|filename": "the file name to append data, eg: \"data.csv\"",
+  "storage.Storage.appendCSVHeaders|param|headers": "the data to append",
   "storage.Storage.appendCSV|param|data": "the data to append",
-  "storage.Storage.appendCSV|param|filename": "the file name to append data, eg: \"data.txt\"",
+  "storage.Storage.appendCSV|param|filename": "the file name to append data, eg: \"data.csv\"",
   "storage.Storage.appendLine": "Appends a new line of data in the file",
   "storage.Storage.appendLine|param|data": "the data to append",
   "storage.Storage.appendLine|param|filename": "the file name to append data, eg: \"data.txt\"",
diff --git a/libs/storage/_locales/storage-strings.json b/libs/storage/_locales/storage-strings.json
index 7e651bb3..ee929629 100644
--- a/libs/storage/_locales/storage-strings.json
+++ b/libs/storage/_locales/storage-strings.json
@@ -1,4 +1,5 @@
 {
+  "storage.Storage.appendCSVHeaders|block": "storage %source|%filename|append CSV headers %headers",
   "storage.Storage.appendCSV|block": "storage %source|%filename|append CSV %data",
   "storage.Storage.appendLine|block": "storage %source|%filename|append line %data",
   "storage.Storage.append|block": "storage %source|%filename|append %data",
diff --git a/libs/storage/storage-core.ts b/libs/storage/storage-core.ts
index f8ae0b13..12ba8490 100644
--- a/libs/storage/storage-core.ts
+++ b/libs/storage/storage-core.ts
@@ -61,8 +61,24 @@ namespace storage {
         }
 
         /**
+         * Append a row of CSV headers
+         * @param filename the file name to append data, eg: "data.csv"
+         * @param headers the data to append
+         */
+        //% blockId=storageAppendCSVHeaders block="storage %source|%filename|append CSV headers %headers"
+        appendCSVHeaders(filename: string, headers: string[]) {
+            let s = ""
+            for (const d of headers) {
+                if (s) s += "\t"
+                s = s + d;
+            }
+            s += "\r\n"
+            this.append(filename, s)
+        }
+
+                /**
          * Append a row of CSV data
-         * @param filename the file name to append data, eg: "data.txt"
+         * @param filename the file name to append data, eg: "data.csv"
          * @param data the data to append
          */
         //% blockId=storageAppendCSV block="storage %source|%filename|append CSV %data"