add functions to show staged changes

2 files changed, 106 insertions, 4 deletions

diff --git a/git-base.sh b/git-base.sh
index d9dc10a..20388aa 100755
--- a/git-base.sh
+++ b/git-base.sh
@@ -181,10 +181,29 @@ porcelain_status() {
   echo "$(git status --porcelain 2>/dev/null)"
 }
 
-untracked_files() {
+count_from_porcelain() {
   if is_repo; then
-    git_status="$(porcelain_status)"
-    untracked="$(echo "$git_status" | grep -p "?? " | wc -l | grep -oEi '[0-9][0-9]*')"
-    echo "$untracked"
+    status="$(porcelain_status)"
+    pattern="$2"
+    echo "$(echo "$status" | grep -p "$pattern" | wc -l | grep -oEi '[0-9][0-9]*')"
+  else
+    echo "0"
   fi
 }
+
+untracked_files() {
+  echo "$(count_from_porcelain "$git_status" "?? ")"
+}
+
+staged_added_changes() {
+  echo "$(count_from_porcelain "$git_status" "A[A|M|C|D|U|R ] ")"
+}
+staged_modified_changes() {
+  echo "$(count_from_porcelain "$git_status" "M[A|M|C|D|U|R ] ")"
+}
+staged_deleted_changes() {
+  echo "$(count_from_porcelain "$git_status" "D[A|M|C|D|U|R ] ")"
+}
+staged_renamed_changes() {
+  echo "$(count_from_porcelain "$git_status" "R[A|M|C|D|U|R ] ")"
+}
diff --git a/test-files.sh b/test-files.sh
index ee583cc..22a1966 100755
--- a/test-files.sh
+++ b/test-files.sh
@@ -30,4 +30,87 @@ test_untracked_files() {
   rm_tmp
 }
 
+test_staged_added_files() {
+  cd_to_tmp
+  git init --quiet
+
+  assertEquals "0" "$(staged_added_changes)"
+
+  touch foo
+  git add .
+  assertEquals "1" "$(staged_added_changes)"
+
+  touch bar
+  git add .
+  assertEquals "2" "$(staged_added_changes)"
+
+  rm_tmp
+}
+
+test_staged_modified_files() {
+  cd_to_tmp
+  git init --quiet
+
+  assertEquals "0" "$(staged_modified_changes)"
+
+  touch foo
+  touch bar
+  git add .
+  git commit -m "foo and bar" >/dev/null
+
+  echo "foo" >> foo
+  git add .
+  assertEquals "1" "$(staged_modified_changes)"
+
+  echo "bar" >> bar
+  git add .
+  assertEquals "2" "$(staged_modified_changes)"
+
+  rm_tmp
+}
+
+test_staged_deleted_files() {
+  cd_to_tmp
+  git init --quiet
+
+  assertEquals "0" "$(staged_deleted_changes)"
+
+  touch foo
+  touch bar
+  git add .
+  git commit -m "foo and bar" >/dev/null
+
+  rm foo
+  git add .
+  assertEquals "1" "$(staged_deleted_changes)"
+
+  rm bar
+  git add .
+  assertEquals "2" "$(staged_deleted_changes)"
+
+  rm_tmp
+}
+
+test_staged_renamed_files() {
+  cd_to_tmp
+  git init --quiet
+
+  assertEquals "0" "$(staged_renamed_changes)"
+
+  touch foo
+  touch bar
+  git add .
+  git commit -m "foo and bar" >/dev/null
+
+  mv foo foo2
+  git add .
+  assertEquals "1" "$(staged_renamed_changes)"
+
+  mv bar bar2
+  git add .
+  assertEquals "2" "$(staged_renamed_changes)"
+
+  rm_tmp
+}
+
 . ./shunit/shunit2