Add appengine/gcloud/mustache dependencies.

pkg/appengine/tool/utils.sh

Index: pkg/appengine/tool/utils.sh
diff --git a/pkg/appengine/tool/utils.sh b/pkg/appengine/tool/utils.sh
new file mode 100644
index 0000000000000000000000000000000000000000..92057db67e153ec31c895ca5b9b319e0a81ba6e4
--- /dev/null
+++ b/pkg/appengine/tool/utils.sh
@@ -0,0 +1,50 @@
+#!/bin/bash
+
+function start_phase {
+  echo "==============================================="
+  echo "= Phase: $1"
+  echo "==============================================="
+}
+
+function error {
+  echo "==============================================="
+  echo "= Error: $1"
+  echo "==============================================="
+}
+
+function die {
+  echo "$1"
+  exit 1
+}
+
+function check_env_variable {
+  NAME="$1"
+  env | grep "$NAME" &> /dev/null
+  if [ $? -ne 0 ]; then
+    die "Couldn't find environment variable '$NAME'!"
+  fi
+}
+
+function analyze_files {
+  echo "Analyzing files '$1'."
+
+  "$DART_SDK/bin/dartanalyzer" --fatal-warnings "$@"
+  if [ $? -ne 0 ]; then
+    error "Analyzer failed on file '$1'."
+    return 1
+  fi
+  return 0
+}
+
+function test_file {
+  echo "Testing file '$1'."
+  "$DART_SDK/bin/dart" --checked "$1"
+  if [ $? -ne 0 ]; then
+    cd ..
+    error "Running tests in '$1' failed."
+    return 1
+  fi
+  cd ..
+  return 0
+}
+