1 files changed, 86 insertions, 0 deletions
diff --git a/lib/helper.php b/lib/helper.php
new file mode 100644
index 0000000..41951c7
--- /dev/null
+++ b/lib/helper.php
@@ -0,0 +1,86 @@
+<?php
+
+# do not include twice
+if (function_exists("format_time_duration"))
+  return;
+
+require_once "../init.php";
+
+function format_time_duration($val) {
+  $val = floor($val);
+  $result = "";
+  $result =
+    sprintf(
+      "%02d",
+      $val % 60
+    );
+  $val = floor($val / 60);
+  if ($val == 0)
+    return $result;
+  $result =
+    sprintf(
+      "%02d:%s",
+      $val % 60,
+      $result
+    );
+  $val = floor($val / 60);
+  if ($val == 0)
+    return $result;
+  $result =
+    sprintf(
+      "%d:%s",
+      $val % 24,
+      $result
+    );
+  $val = floor($val / 24);
+  if ($val == 0)
+    return $result;
+  $tmp = $val % 7;
+  $printed_conjunction = true;
+  if ($tmp > 1)
+    $result =
+      sprintf(
+        "%d days and %s",
+        $tmp,
+        $result
+      );
+  elseif ($tmp == 1)
+    $result =
+      sprintf(
+        "%d day and %s",
+        $tmp,
+        $result
+      );
+  else
+    $printed_conjunction = false;
+  $val = floor($val / 7);
+  if ($val == 0)
+    return $result;
+  if ($printed_conjunction)
+    $result =
+      sprintf(
+        ", %s",
+        $result
+      );
+  else
+    $result =
+      sprintf(
+        " and %s",
+        $result
+      );
+  if ($val>1)
+    $result =
+      sprintf(
+        "%d weeks%s",
+        $val,
+        $result
+      );
+  else
+    $result =
+      sprintf(
+        "%d week%s",
+        $val,
+        $result
+      );
+  return $result;
+}