Reorganize code and remove hack for empty block outputs

src/util.c

@@ -0,0 +1,39 @@
+#include "util.h"
+
+int gcd(int a, int b) {
+    int temp;
+    while (b > 0) {
+        temp = a % b;
+        a = b;
+        b = temp;
+    }
+    return a;
+}
+
+void closePipe(int pipe[2]) {
+    close(pipe[0]);
+    close(pipe[1]);
+}
+
+void trimUTF8(char* buffer, unsigned int size) {
+    int length = (size - 1) / 4;
+    int count = 0, j = 0;
+    char ch = buffer[j];
+    while (ch != '\0' && ch != '\n' && count < length) {
+        // Skip continuation bytes, if any
+        int skip = 1;
+        while ((ch & 0xc0) > 0x80) {
+            ch <<= 1;
+            skip++;
+        }
+
+        j += skip;
+        ch = buffer[j];
+        count++;
+    }
+
+    // Trim trailing newline and spaces
+    buffer[j] = ' ';
+    while (j >= 0 && buffer[j] == ' ') j--;
+    buffer[j + 1] = '\0';
+}