golint/gofmt only local .go files not in vendor/

Also, do not fail on the first failed check.

scripts/travis_checker.sh

@@ -1,19 +1,78 @@
 #!/bin/bash
 
-go test ./...
-if [ $? -ne 0 ]; then
-    echo "Some tests failed"
-    exit 1
+# Print a file surrounded by BEGIN/END preamble, e.g.:
+#
+#	--- BEGIN a.out output ---
+#	Hello world
+#	--- END a.out output ---
+#
+print_file() {
+	echo "--- BEGIN ${2} ---"
+	cat "${1}"
+	echo "--- END ${2} ---"
+}
+
+unset -v ok tmpdir go_files go_dirs gofmt_output golint_output
+ok=true
+tmpdir=
+trap 'case "${tmpdir}" in ?*) rm -rf "${tmpdir}";; esac' EXIT
+tmpdir=$(mktemp -d)
+
+go_files="${tmpdir}/go_files.txt"
+git ls-files '*.go' | grep -v '^vendor/' > "${go_files}"
+
+# Print dirname of each relative pathname from stdin (one per line).
+dirnames() {
+	# pathname	dirname
+	# ----------------------
+	# a/b/c.go	a/b
+	# c.go		.
+	sed \
+		-e 's:^:./:' \
+		-e 's:/[^/]*$::' \
+		-e 's:^\./::'
+}
+
+go_dirs="${tmpdir}/go_dirs.txt"
+dirnames < "${go_files}" | sort -u -t/ > "${go_dirs}"
+
+echo "Running go test..."
+if go test ./...
+then
+	echo "go test succeeded."
+else
+	echo "go test FAILED!"
+	ok=false
 fi
-if [ $(golint ./... | wc | awk '{print $1}') -gt 2 ]; then
-    echo "Go code is not formatted:"
-    gofmt -d .
-    exit 1
+
+echo "Running golint..."
+golint_output="${tmpdir}/golint_output.txt"
+if xargs golint -set_exit_status < "${go_dirs}" > "${golint_output}" 2>&1
+then
+	echo "golint passed."
+else
+	echo "golint FAILED!"
+	print_file "${golint_output}" "golint"
+	ok=false
 fi
-if [ -n "$(gofmt -l .)" ]; then
-    echo "Go code is not formatted:"
-    gofmt -d .
-    exit 1
+
+echo "Running gofmt..."
+gofmt_output="${tmpdir}/gofmt_output.txt"
+xargs gofmt -d < "${go_files}" > "${gofmt_output}" 2>&1
+if [ -s "${gofmt_output}" ]
+then
+	echo "gofmt FAILED!"
+	print_file "${gofmt_output}" "gofmt"
+	ok=false
 else
-	echo "Go code is well formatted ;)"
+	echo "gofmt passed."
 fi
+
+if ! ${ok}
+then
+	echo "Some checks failed; see output above."
+	exit 1
+fi
+
+echo "All checks passed. :-)"
+exit 0