413 lines
8.8 KiB
Go
413 lines
8.8 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package models
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import (
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"bufio"
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"container/list"
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"fmt"
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"io"
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"os"
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"os/exec"
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"path"
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"strings"
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"github.com/gogits/git"
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"github.com/gogits/gogs/modules/base"
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)
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// RepoFile represents a file object in git repository.
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type RepoFile struct {
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*git.TreeEntry
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Path string
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Size int64
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Repo *git.Repository
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Commit *git.Commit
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}
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// LookupBlob returns the content of an object.
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func (file *RepoFile) LookupBlob() (*git.Blob, error) {
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if file.Repo == nil {
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return nil, ErrRepoFileNotLoaded
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}
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return file.Repo.LookupBlob(file.Id)
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}
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// GetBranches returns all branches of given repository.
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func GetBranches(userName, reposName string) ([]string, error) {
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repo, err := git.OpenRepository(RepoPath(userName, reposName))
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if err != nil {
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return nil, err
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}
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refs, err := repo.AllReferences()
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if err != nil {
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return nil, err
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}
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brs := make([]string, len(refs))
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for i, ref := range refs {
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brs[i] = ref.BranchName()
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}
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return brs, nil
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}
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func GetTargetFile(userName, reposName, branchName, commitId, rpath string) (*RepoFile, error) {
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repo, err := git.OpenRepository(RepoPath(userName, reposName))
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if err != nil {
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return nil, err
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}
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commit, err := repo.GetCommit(branchName, commitId)
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if err != nil {
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return nil, err
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}
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parts := strings.Split(path.Clean(rpath), "/")
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var entry *git.TreeEntry
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tree := commit.Tree
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for i, part := range parts {
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if i == len(parts)-1 {
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entry = tree.EntryByName(part)
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if entry == nil {
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return nil, ErrRepoFileNotExist
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}
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} else {
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tree, err = repo.SubTree(tree, part)
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if err != nil {
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return nil, err
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}
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}
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}
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size, err := repo.ObjectSize(entry.Id)
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if err != nil {
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return nil, err
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}
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repoFile := &RepoFile{
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entry,
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rpath,
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size,
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repo,
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commit,
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}
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return repoFile, nil
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}
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// GetReposFiles returns a list of file object in given directory of repository.
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func GetReposFiles(userName, reposName, branchName, commitId, rpath string) ([]*RepoFile, error) {
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repo, err := git.OpenRepository(RepoPath(userName, reposName))
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if err != nil {
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return nil, err
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}
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commit, err := repo.GetCommit(branchName, commitId)
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if err != nil {
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return nil, err
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}
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var repodirs []*RepoFile
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var repofiles []*RepoFile
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commit.Tree.Walk(func(dirname string, entry *git.TreeEntry) int {
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if dirname == rpath {
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// TODO: size get method shoule be improved
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size, err := repo.ObjectSize(entry.Id)
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if err != nil {
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return 0
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}
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var cm = commit
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var i int
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for {
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i = i + 1
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//fmt.Println(".....", i, cm.Id(), cm.ParentCount())
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if cm.ParentCount() == 0 {
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break
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} else if cm.ParentCount() == 1 {
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pt, _ := repo.SubTree(cm.Parent(0).Tree, dirname)
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if pt == nil {
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break
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}
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pEntry := pt.EntryByName(entry.Name)
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if pEntry == nil || !pEntry.Id.Equal(entry.Id) {
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break
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} else {
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cm = cm.Parent(0)
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}
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} else {
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var emptyCnt = 0
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var sameIdcnt = 0
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var lastSameCm *git.Commit
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//fmt.Println(".....", cm.ParentCount())
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for i := 0; i < cm.ParentCount(); i++ {
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//fmt.Println("parent", i, cm.Parent(i).Id())
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p := cm.Parent(i)
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pt, _ := repo.SubTree(p.Tree, dirname)
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var pEntry *git.TreeEntry
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if pt != nil {
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pEntry = pt.EntryByName(entry.Name)
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}
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//fmt.Println("pEntry", pEntry)
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if pEntry == nil {
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emptyCnt = emptyCnt + 1
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if emptyCnt+sameIdcnt == cm.ParentCount() {
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if lastSameCm == nil {
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goto loop
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} else {
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cm = lastSameCm
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break
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}
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}
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} else {
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//fmt.Println(i, "pEntry", pEntry.Id, "entry", entry.Id)
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if !pEntry.Id.Equal(entry.Id) {
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goto loop
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} else {
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lastSameCm = cm.Parent(i)
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sameIdcnt = sameIdcnt + 1
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if emptyCnt+sameIdcnt == cm.ParentCount() {
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// TODO: now follow the first parent commit?
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cm = lastSameCm
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//fmt.Println("sameId...")
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break
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}
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}
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}
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}
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}
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}
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loop:
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rp := &RepoFile{
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entry,
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path.Join(dirname, entry.Name),
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size,
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repo,
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cm,
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}
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if entry.IsFile() {
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repofiles = append(repofiles, rp)
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} else if entry.IsDir() {
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repodirs = append(repodirs, rp)
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}
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}
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return 0
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})
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return append(repodirs, repofiles...), nil
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}
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func GetCommit(userName, repoName, branchname, commitid string) (*git.Commit, error) {
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repo, err := git.OpenRepository(RepoPath(userName, repoName))
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if err != nil {
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return nil, err
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}
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return repo.GetCommit(branchname, commitid)
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}
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// GetCommits returns all commits of given branch of repository.
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func GetCommits(userName, reposName, branchname string) (*list.List, error) {
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repo, err := git.OpenRepository(RepoPath(userName, reposName))
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if err != nil {
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return nil, err
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}
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r, err := repo.LookupReference(fmt.Sprintf("refs/heads/%s", branchname))
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if err != nil {
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return nil, err
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}
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return r.AllCommits()
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}
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// Diff line types.
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const (
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DIFF_LINE_PLAIN = iota + 1
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DIFF_LINE_ADD
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DIFF_LINE_DEL
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DIFF_LINE_SECTION
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)
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const (
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DIFF_FILE_ADD = iota + 1
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DIFF_FILE_CHANGE
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DIFF_FILE_DEL
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)
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type DiffLine struct {
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LeftIdx int
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RightIdx int
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Type int
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Content string
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}
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func (d DiffLine) GetType() int {
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return d.Type
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}
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type DiffSection struct {
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Name string
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Lines []*DiffLine
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}
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type DiffFile struct {
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Name string
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Addition, Deletion int
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Type int
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Sections []*DiffSection
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}
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type Diff struct {
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TotalAddition, TotalDeletion int
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Files []*DiffFile
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}
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func (diff *Diff) NumFiles() int {
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return len(diff.Files)
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}
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const DIFF_HEAD = "diff --git "
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func ParsePatch(reader io.Reader) (*Diff, error) {
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scanner := bufio.NewScanner(reader)
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var (
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curFile *DiffFile
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curSection = &DiffSection{
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Lines: make([]*DiffLine, 0, 10),
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}
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leftLine, rightLine int
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)
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diff := &Diff{Files: make([]*DiffFile, 0)}
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var i int
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for scanner.Scan() {
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line := scanner.Text()
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// fmt.Println(i, line)
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if strings.HasPrefix(line, "+++ ") || strings.HasPrefix(line, "--- ") {
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continue
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}
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i = i + 1
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if line == "" {
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continue
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}
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if line[0] == ' ' {
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diffLine := &DiffLine{Type: DIFF_LINE_PLAIN, Content: line, LeftIdx: leftLine, RightIdx: rightLine}
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leftLine++
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rightLine++
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curSection.Lines = append(curSection.Lines, diffLine)
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continue
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} else if line[0] == '@' {
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curSection = &DiffSection{}
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curFile.Sections = append(curFile.Sections, curSection)
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ss := strings.Split(line, "@@")
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diffLine := &DiffLine{Type: DIFF_LINE_SECTION, Content: line}
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curSection.Lines = append(curSection.Lines, diffLine)
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// Parse line number.
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ranges := strings.Split(ss[len(ss)-2][1:], " ")
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leftLine, _ = base.StrTo(strings.Split(ranges[0], ",")[0][1:]).Int()
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rightLine, _ = base.StrTo(strings.Split(ranges[1], ",")[0]).Int()
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continue
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} else if line[0] == '+' {
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curFile.Addition++
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diff.TotalAddition++
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diffLine := &DiffLine{Type: DIFF_LINE_ADD, Content: line, RightIdx: rightLine}
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rightLine++
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curSection.Lines = append(curSection.Lines, diffLine)
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continue
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} else if line[0] == '-' {
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curFile.Deletion++
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diff.TotalDeletion++
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diffLine := &DiffLine{Type: DIFF_LINE_DEL, Content: line, LeftIdx: leftLine}
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if leftLine > 0 {
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leftLine++
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}
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curSection.Lines = append(curSection.Lines, diffLine)
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continue
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}
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// Get new file.
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if strings.HasPrefix(line, DIFF_HEAD) {
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fs := strings.Split(line[len(DIFF_HEAD):], " ")
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a := fs[0]
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curFile = &DiffFile{
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Name: a[strings.Index(a, "/")+1:],
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Type: DIFF_FILE_CHANGE,
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Sections: make([]*DiffSection, 0, 10),
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}
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diff.Files = append(diff.Files, curFile)
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// Check file diff type.
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for scanner.Scan() {
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switch {
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case strings.HasPrefix(scanner.Text(), "new file"):
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curFile.Type = DIFF_FILE_ADD
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case strings.HasPrefix(scanner.Text(), "deleted"):
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curFile.Type = DIFF_FILE_DEL
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case strings.HasPrefix(scanner.Text(), "index"):
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curFile.Type = DIFF_FILE_CHANGE
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}
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if curFile.Type > 0 {
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break
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}
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}
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}
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}
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return diff, nil
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}
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func GetDiff(repoPath, commitid string) (*Diff, error) {
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repo, err := git.OpenRepository(repoPath)
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if err != nil {
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return nil, err
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}
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commit, err := repo.GetCommit("", commitid)
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if err != nil {
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return nil, err
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}
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// First commit of repository.
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if commit.ParentCount() == 0 {
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rd, wr := io.Pipe()
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go func() {
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cmd := exec.Command("git", "show", commitid)
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cmd.Dir = repoPath
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cmd.Stdout = wr
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cmd.Stdin = os.Stdin
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cmd.Stderr = os.Stderr
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cmd.Run()
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wr.Close()
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}()
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defer rd.Close()
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return ParsePatch(rd)
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}
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rd, wr := io.Pipe()
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go func() {
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cmd := exec.Command("git", "diff", commit.Parent(0).Oid.String(), commitid)
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cmd.Dir = repoPath
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cmd.Stdout = wr
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cmd.Stdin = os.Stdin
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cmd.Stderr = os.Stderr
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cmd.Run()
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wr.Close()
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}()
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defer rd.Close()
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return ParsePatch(rd)
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}
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