From 08a18531f04a395a556444ecba149356eeddf9d7 Mon Sep 17 00:00:00 2001
From: Irene Knapp <ireneista@gmail.com>
Date: Sun, 6 Dec 2020 01:01:19 -0800
Subject: Grouping primitive in the library

---
 lib/src/lib.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'lib')

diff --git a/lib/src/lib.rs b/lib/src/lib.rs
index 4913cbb..0272485 100644
--- a/lib/src/lib.rs
+++ b/lib/src/lib.rs
@@ -36,6 +36,25 @@ pub fn read_lines_file(filename: &str) -> Result<Vec<String>> {
   Ok(input)
 }
 
+pub fn group_lines_by_blanks(lines: Vec<String>) -> Result<Vec<Vec<String>>> {
+  let mut all_groups = Vec::new();
+  let mut current_group = Vec::new();
+
+  for line in lines {
+    if line.trim().len() == 0 {
+      all_groups.push(current_group);
+      current_group = Vec::new();
+    } else {
+      current_group.push(line);
+    }
+  }
+
+  if current_group.len() > 0 {
+    all_groups.push(current_group);
+  }
+
+  Ok(all_groups)
+}
 
 pub fn read_int_file(filename: &str) -> Result<Vec<i64>> {
   let file = File::open(filename)?;
-- 
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