| // Copyright 2022 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package build |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| "os" |
| ) |
| |
| // PackageSubpackageInfo contains metadata for a single subpackage in a package |
| type PackageSubpackageInfo struct { |
| // The path of the subpackage relative to the output directory |
| Name string `json:"name"` |
| |
| // Merkle root for the subpackage |
| Merkle MerkleRoot `json:"merkle"` |
| |
| // Path to the package_manifest.json for the subpackage, |
| // relative to the output directory |
| ManifestPath string `json:"manifest_path"` |
| } |
| |
| // LoadSubpackages attempts to read and parse a subpackages manifest from the |
| // given path. |
| func LoadSubpackages(path string) ([]PackageSubpackageInfo, error) { |
| data, err := os.ReadFile(path) |
| if err != nil { |
| return nil, err |
| } |
| |
| var members []PackageSubpackageInfo |
| |
| err = json.Unmarshal(data, &members) |
| if err != nil { |
| return nil, err |
| } |
| |
| packagePaths := make(map[string]struct{}) |
| for _, subpackage := range members { |
| if _, ok := packagePaths[subpackage.ManifestPath]; ok { |
| return nil, fmt.Errorf("%q contains more than one entry with path = %q", path, subpackage.ManifestPath) |
| } |
| packagePaths[subpackage.ManifestPath] = struct{}{} |
| } |
| |
| return members, nil |
| } |