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// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package files
import (
"context"
"fmt"
"net/url"
"code.gitea.io/gitea/models"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/setting"
api "code.gitea.io/gitea/modules/structs"
)
// GetTreeBySHA get the GitTreeResponse of a repository using a sha hash.
func GetTreeBySHA(ctx context.Context, repo *repo_model.Repository, gitRepo *git.Repository, sha string, page, perPage int, recursive bool) (*api.GitTreeResponse, error) {
gitTree, err := gitRepo.GetTree(sha)
if err != nil || gitTree == nil {
return nil, models.ErrSHANotFound{
SHA: sha,
}
}
tree := new(api.GitTreeResponse)
tree.SHA = gitTree.ResolvedID.String()
tree.URL = repo.APIURL() + "/git/trees/" + url.PathEscape(tree.SHA)
var entries git.Entries
if recursive {
entries, err = gitTree.ListEntriesRecursiveWithSize()
} else {
entries, err = gitTree.ListEntries()
}
if err != nil {
return nil, err
}
apiURL := repo.APIURL()
apiURLLen := len(apiURL)
objectFormat := git.ObjectFormatFromName(repo.ObjectFormatName)
hashLen := objectFormat.FullLength()
const gitBlobsPath = "/git/blobs/"
blobURL := make([]byte, apiURLLen+hashLen+len(gitBlobsPath))
copy(blobURL, apiURL)
copy(blobURL[apiURLLen:], []byte(gitBlobsPath))
const gitTreePath = "/git/trees/"
treeURL := make([]byte, apiURLLen+hashLen+len(gitTreePath))
copy(treeURL, apiURL)
copy(treeURL[apiURLLen:], []byte(gitTreePath))
// copyPos is at the start of the hash
copyPos := len(treeURL) - hashLen
if perPage <= 0 || perPage > setting.API.DefaultGitTreesPerPage {
perPage = setting.API.DefaultGitTreesPerPage
}
if page <= 0 {
page = 1
}
tree.Page = page
tree.TotalCount = len(entries)
rangeStart := perPage * (page - 1)
if rangeStart >= len(entries) {
return tree, nil
}
var rangeEnd int
if len(entries) > perPage {
tree.Truncated = true
}
if rangeStart+perPage < len(entries) {
rangeEnd = rangeStart + perPage
} else {
rangeEnd = len(entries)
}
tree.Entries = make([]api.GitEntry, rangeEnd-rangeStart)
for e := rangeStart; e < rangeEnd; e++ {
i := e - rangeStart
tree.Entries[i].Path = entries[e].Name()
tree.Entries[i].Mode = fmt.Sprintf("%06o", entries[e].Mode())
tree.Entries[i].Type = entries[e].Type()
tree.Entries[i].Size = entries[e].Size()
tree.Entries[i].SHA = entries[e].ID.String()
if entries[e].IsDir() {
copy(treeURL[copyPos:], entries[e].ID.String())
tree.Entries[i].URL = string(treeURL)
} else if entries[e].IsSubModule() {
// In Github Rest API Version=2022-11-28, if a tree entry is a submodule,
// its url will be returned as an empty string.
// So the URL will be set to "" here.
tree.Entries[i].URL = ""
} else {
copy(blobURL[copyPos:], entries[e].ID.String())
tree.Entries[i].URL = string(blobURL)
}
}
return tree, nil
}
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