mirror of
https://github.com/go-gitea/gitea.git
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121 lines
3.3 KiB
Go
121 lines
3.3 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package files
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import (
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"context"
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"fmt"
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"net/url"
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repo_model "code.gitea.io/gitea/models/repo"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/setting"
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api "code.gitea.io/gitea/modules/structs"
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"code.gitea.io/gitea/modules/util"
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)
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// ErrSHANotFound represents a "SHADoesNotMatch" kind of error.
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type ErrSHANotFound struct {
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SHA string
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}
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// IsErrSHANotFound checks if an error is a ErrSHANotFound.
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func IsErrSHANotFound(err error) bool {
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_, ok := err.(ErrSHANotFound)
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return ok
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}
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func (err ErrSHANotFound) Error() string {
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return fmt.Sprintf("sha not found [%s]", err.SHA)
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}
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func (err ErrSHANotFound) Unwrap() error {
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return util.ErrNotExist
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}
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// GetTreeBySHA get the GitTreeResponse of a repository using a sha hash.
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func GetTreeBySHA(ctx context.Context, repo *repo_model.Repository, gitRepo *git.Repository, sha string, page, perPage int, recursive bool) (*api.GitTreeResponse, error) {
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gitTree, err := gitRepo.GetTree(sha)
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if err != nil || gitTree == nil {
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return nil, ErrSHANotFound{ // TODO: this error has never been catch outside of this function
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SHA: sha,
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}
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}
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tree := new(api.GitTreeResponse)
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tree.SHA = gitTree.ResolvedID.String()
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tree.URL = repo.APIURL() + "/git/trees/" + url.PathEscape(tree.SHA)
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var entries git.Entries
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if recursive {
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entries, err = gitTree.ListEntriesRecursiveWithSize()
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} else {
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entries, err = gitTree.ListEntries()
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}
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if err != nil {
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return nil, err
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}
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apiURL := repo.APIURL()
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apiURLLen := len(apiURL)
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objectFormat := git.ObjectFormatFromName(repo.ObjectFormatName)
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hashLen := objectFormat.FullLength()
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const gitBlobsPath = "/git/blobs/"
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blobURL := make([]byte, apiURLLen+hashLen+len(gitBlobsPath))
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copy(blobURL, apiURL)
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copy(blobURL[apiURLLen:], []byte(gitBlobsPath))
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const gitTreePath = "/git/trees/"
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treeURL := make([]byte, apiURLLen+hashLen+len(gitTreePath))
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copy(treeURL, apiURL)
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copy(treeURL[apiURLLen:], []byte(gitTreePath))
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// copyPos is at the start of the hash
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copyPos := len(treeURL) - hashLen
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if perPage <= 0 || perPage > setting.API.DefaultGitTreesPerPage {
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perPage = setting.API.DefaultGitTreesPerPage
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}
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if page <= 0 {
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page = 1
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}
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tree.Page = page
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tree.TotalCount = len(entries)
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rangeStart := perPage * (page - 1)
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if rangeStart >= len(entries) {
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return tree, nil
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}
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var rangeEnd int
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if len(entries) > perPage {
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tree.Truncated = true
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}
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if rangeStart+perPage < len(entries) {
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rangeEnd = rangeStart + perPage
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} else {
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rangeEnd = len(entries)
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}
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tree.Entries = make([]api.GitEntry, rangeEnd-rangeStart)
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for e := rangeStart; e < rangeEnd; e++ {
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i := e - rangeStart
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tree.Entries[i].Path = entries[e].Name()
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tree.Entries[i].Mode = fmt.Sprintf("%06o", entries[e].Mode())
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tree.Entries[i].Type = entries[e].Type()
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tree.Entries[i].Size = entries[e].Size()
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tree.Entries[i].SHA = entries[e].ID.String()
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if entries[e].IsDir() {
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copy(treeURL[copyPos:], entries[e].ID.String())
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tree.Entries[i].URL = string(treeURL)
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} else if entries[e].IsSubModule() {
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// In Github Rest API Version=2022-11-28, if a tree entry is a submodule,
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// its url will be returned as an empty string.
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// So the URL will be set to "" here.
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tree.Entries[i].URL = ""
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} else {
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copy(blobURL[copyPos:], entries[e].ID.String())
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tree.Entries[i].URL = string(blobURL)
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}
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}
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return tree, nil
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}
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