From cf36412e51fe68850ce05559f205e37d25257c57 Mon Sep 17 00:00:00 2001
From: Jim Martens <github@2martens.de>
Date: Sat, 4 Jul 2015 12:29:57 +0200
Subject: [PATCH] [ES] Added readString method
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Signed-óff-by: Jim Martens <github@2martens.de>
---
 es/blatt6/uebung6-1/uebung6-1.ino | 33 +++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/es/blatt6/uebung6-1/uebung6-1.ino b/es/blatt6/uebung6-1/uebung6-1.ino
index 8a1ecf2..923e8c7 100644
--- a/es/blatt6/uebung6-1/uebung6-1.ino
+++ b/es/blatt6/uebung6-1/uebung6-1.ino
@@ -1,4 +1,5 @@
 #include <SPI.h>
+#include <SD.h>
 
 // pins
 int slaveSelectPin = 10;
@@ -304,3 +305,35 @@ int printString(int x, int y, const char* text, int textLength)
 
   return 0;
 }
+
+/**
+ * Reads the contents of a text file into a string.
+ *
+ * Returns an empty string on failure.
+ *
+ * @param File file
+ */
+const char* readString(File file)
+{
+  if (file) {
+    unsigned long fileSize = file.size();
+    char result[fileSize];
+    int i = 0;
+    while (file.available()) {
+      char c = file.read();
+      if (c != '\n') {
+        result[i] = c;
+        i++;
+      }
+      else {
+        result[i] = '\0';
+      }
+    }
+
+    return result;
+  }
+  else {
+    // something happened
+    return "";
+  }
+}