mirror of https://github.com/harness/drone.git
92 lines
2.4 KiB
Go
92 lines
2.4 KiB
Go
// Copyright 2023 Harness, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package api
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import (
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"bufio"
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"context"
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"strings"
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)
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type Submodule struct {
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Name string
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URL string
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}
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// GetSubmodule returns the submodule at the given path reachable from ref.
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// Note: ref can be Branch / Tag / CommitSHA.
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func (g *Git) GetSubmodule(
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ctx context.Context,
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repoPath string,
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ref string,
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treePath string,
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) (*Submodule, error) {
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if repoPath == "" {
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return nil, ErrRepositoryPathEmpty
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}
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treePath = cleanTreePath(treePath)
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// Get the commit object for the ref
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commit, err := g.GetFullCommitID(ctx, repoPath, ref)
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if err != nil {
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return nil, processGitErrorf(err, "error getting commit for ref '%s'", ref)
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}
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node, err := g.GetTreeNode(ctx, repoPath, commit.String(), ".gitmodules")
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if err != nil {
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return nil, processGitErrorf(err, "error reading tree node for ref '%s' with commit '%s'",
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ref, commit)
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}
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reader, err := GetBlob(ctx, repoPath, nil, node.SHA, 0)
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if err != nil {
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return nil, processGitErrorf(err, "error reading commit for ref '%s'", ref)
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}
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defer reader.Content.Close()
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modules, err := GetSubModules(reader)
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if err != nil {
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return nil, processGitErrorf(err, "error getting submodule '%s' from commit", treePath)
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}
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return modules[treePath], nil
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}
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// GetSubModules get all the sub modules of current revision git tree.
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func GetSubModules(rd *BlobReader) (map[string]*Submodule, error) {
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var isModule bool
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var path string
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submodules := make(map[string]*Submodule, 4)
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scanner := bufio.NewScanner(rd.Content)
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for scanner.Scan() {
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if strings.HasPrefix(scanner.Text(), "[submodule") {
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isModule = true
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continue
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}
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if isModule {
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fields := strings.Split(scanner.Text(), "=")
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k := strings.TrimSpace(fields[0])
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if k == "path" {
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path = strings.TrimSpace(fields[1])
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} else if k == "url" {
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submodules[path] = &Submodule{path, strings.TrimSpace(fields[1])}
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isModule = false
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}
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}
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}
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return submodules, nil
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}
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