From 4635f4daaa2107329c2f22ea7587b5558cbe81ba Mon Sep 17 00:00:00 2001
From: Th3maz1ng <re.hertz@laposte.net>
Date: Sat, 23 Apr 2022 22:51:52 +0200
Subject: [PATCH] Added the new mallocWithFallback function which tries to
 allocate the specified size and falls back to a smaller size when fails

---
 src/app/utilities.cpp | 17 +++++++++++++++++
 src/app/utilities.h   |  1 +
 2 files changed, 18 insertions(+)

diff --git a/src/app/utilities.cpp b/src/app/utilities.cpp
index 3eed40a..8543e3b 100644
--- a/src/app/utilities.cpp
+++ b/src/app/utilities.cpp
@@ -68,3 +68,20 @@ uint32_t monthNumTo3LetterAbbreviation(const uint8_t monthNumber)
     
   return toReturn;
 }
+
+void *mallocWithFallback(size_t requestedSize, size_t *acceptedSize)
+{
+  void *allocAddr(nullptr);
+  uint32_t divider(1);
+  
+  do
+  {
+    requestedSize /= divider++;
+    allocAddr = malloc(requestedSize);
+  } while(!allocAddr && requestedSize >= 50); //If we can't even manage to malloc 50 bytes then we should give up and cry
+
+  if(acceptedSize && allocAddr)*acceptedSize = requestedSize;
+  else if(acceptedSize)*acceptedSize = 0;
+
+  return allocAddr;
+}
\ No newline at end of file
diff --git a/src/app/utilities.h b/src/app/utilities.h
index f429317..19de3ff 100644
--- a/src/app/utilities.h
+++ b/src/app/utilities.h
@@ -5,4 +5,5 @@
 char *addChar(char *pointer, const char character);
 char *dateTimeFormater(char *pointer, const uint8_t value, const char character);
 uint32_t monthNumTo3LetterAbbreviation(const uint8_t monthNumber);
+void *mallocWithFallback(size_t requestedSize, size_t *acceptedSize = nullptr);
 #endif // UTILITIES_H