loader/file_discover.go

// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package loader

import (
	"fmt"
	"path/filepath"
)

// DiscoverFiles takes a slices of wildcards patterns and try to discover all the matching files
// recursively and will stop on any errors.
func DiscoverFiles(patterns ...string) ([]string, error) {
	files := make([]string, 0)
	for _, pattern := range patterns {
		f, err := filepath.Glob(pattern)
		if err != nil {
			return files, fmt.Errorf("error while loading glob pattern: %w", err)
		}

		if len(f) > 0 {
			files = append(files, f...)
		}
	}

	return files, nil
}