8-9/10... inconsistent book tests persist

praxis3/transfer_defines.h

@@ -17,4 +17,49 @@ typedef enum
     UNSUPPORTED,
 } TYPE;
 
+char *sanitize_input(char *input){
+    if(!input) return NULL;
+
+    int i = 0;
+
+    char *ret = malloc(sizeof(char));
+    if(!ret){
+        // perror("[MAIN - sanitize_input] Failed to allocate memory for ret");
+        return NULL;
+    }
+    *ret = '\0';
+
+    char *it = input;
+    while(*it && !isalpha(*it)) it++;
+
+    bool writeSpace = false;
+    while(*it){
+        if(isalpha(*it)){
+            char *tmp = NULL;
+            if(writeSpace){
+                tmp = realloc(ret, i + 3);
+            }
+            else{
+                tmp = realloc(ret, i + 2);
+            }
+            if(!tmp){
+                // perror("[MAIN - sanitize_input] Failed to realloc memory for ret");
+                free(ret);
+                return NULL;
+            }
+            ret = tmp;
+            if(writeSpace) ret[i++] = ' ';
+            ret[i++] = tolower(*it++);
+            writeSpace = false;
+        }
+        else{
+            it++;
+            writeSpace = true;
+        }
+    }
+    ret[i] = '\0';
+    return ret;
+}
+
+
 #endif //TRANSFER_DEFINES_H