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// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package repofiles
import (
"fmt"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/setting"
api "code.gitea.io/sdk/gitea"
)
// GetTreeBySHA get the GitTreeResponse of a repository using a sha hash.
func GetTreeBySHA(repo *models.Repository, sha string, page, perPage int, recursive bool) (*api.GitTreeResponse, error) {
gitRepo, err := git.OpenRepository(repo.RepoPath())
gitTree, err := gitRepo.GetTree(sha)
if err != nil || gitTree == nil {
return nil, models.ErrSHANotFound{
SHA: sha,
}
}
tree := new(api.GitTreeResponse)
tree.SHA = gitTree.ID.String()
tree.URL = repo.APIURL() + "/git/trees/" + tree.SHA
var entries git.Entries
if recursive {
entries, err = gitTree.ListEntriesRecursive()
} else {
entries, err = gitTree.ListEntries()
}
if err != nil {
return nil, err
}
apiURL := repo.APIURL()
apiURLLen := len(apiURL)
// 51 is len(sha1) + len("/git/blobs/"). 40 + 11.
blobURL := make([]byte, apiURLLen+51)
copy(blobURL[:], apiURL)
copy(blobURL[apiURLLen:], "/git/blobs/")
// 51 is len(sha1) + len("/git/trees/"). 40 + 11.
treeURL := make([]byte, apiURLLen+51)
copy(treeURL[:], apiURL)
copy(treeURL[apiURLLen:], "/git/trees/")
// 40 is the size of the sha1 hash in hexadecimal format.
copyPos := len(treeURL) - 40
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("%06x", entries[e].Mode())
tree.Entries[i].Type = string(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 {
copy(blobURL[copyPos:], entries[e].ID.String())
tree.Entries[i].URL = string(blobURL[:])
}
}
return tree, nil
}
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