From 3ad39fddb7433ca51e585930f026f6b85ab29950 Mon Sep 17 00:00:00 2001
From: Oliver Davies <oliver@oliverdavies.dev>
Date: Tue, 21 May 2024 08:00:00 +0100
Subject: [PATCH] Don't re-run if there is a result file

Use the existing result file if there is one.
---
 git-commit-length-counter.sh | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/git-commit-length-counter.sh b/git-commit-length-counter.sh
index 721a127..5af6b86 100755
--- a/git-commit-length-counter.sh
+++ b/git-commit-length-counter.sh
@@ -13,16 +13,17 @@ REPO="${REPO:-$(pwd)}"
 [[ ! -d "${REPO}" ]] && exit 2
 
 result_file="./result"
+if [[ ! -f "${result_file}" ]]; then
+  for commit_id in $(git -C "${REPO}" rev-list --all --no-merges); do
+      echo "Processing commit ${commit_id}..."
+      # Calculate the legnth of the commit message.
+      commit_message=$(GIT_PAGER=cat git -C "${REPO}" show "${commit_id}" -s --format=%B)
+      commit_message_length=$(echo "${commit_message}" | wc -l)
 
-for commit_id in $(git -C "${REPO}" rev-list --all --no-merges); do
-    echo "Processing commit ${commit_id}..."
-    # Calculate the legnth of the commit message.
-    commit_message=$(GIT_PAGER=cat git -C "${REPO}" show "${commit_id}" -s --format=%B)
-    commit_message_length=$(echo "${commit_message}" | wc -l)
-
-    # Store the commit IDs and the message length.
-    echo "${commit_message_length} ${commit_id}" >> "${result_file}"
-done
+      # Store the commit IDs and the message length.
+      echo "${commit_message_length} ${commit_id}" >> "${result_file}"
+  done
+fi
 
 # Sort the result file so all files are sorted by the length of the message.
 sort "${result_file}" --reverse --numeric-sort --output "${result_file}"