[!T] Added reduce

praxis3/key_value_pair.c

@@ -1,5 +1,7 @@
 #include "key_value_pair.h"
 
+#include <ctype.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -130,3 +132,39 @@ void remove_key_value_pair(key_value_pair *kv, key_value_pair **head, key_value_
         iterator = iterator->next;
     }
 }
+
+void extract_key_value_pairs(char *red_str, key_value_pair **head, key_value_pair **tail){
+    char *it = red_str;
+    bool reading_value = false;
+    char *word_start = it;
+    size_t word_length = 0;
+    size_t value_length = 0;
+
+    while(*it){
+        if(isalpha(*it) && reading_value){
+            char key[word_length + 1];
+            strncpy(key, word_start, word_length);
+            char value[16];
+            snprintf(value, 16, "%d", (int)value_length);
+
+            key_value_pair *kv = init_key_value_pair(key, value);
+            add_key_value_pair(kv, head, tail);
+
+            // reset
+            word_length = 0;
+            value_length = 0;
+            word_start = it;
+            reading_value = false;
+            continue;
+        }
+        if(isalpha(*it)){
+            word_length++;
+            it++;
+        }
+        else{
+            reading_value = true; // reassigning true is faster than if checks every iteration
+            word_length++;
+            it++;
+        }
+    }
+}