mirror of https://github.com/go-gitea/gitea.git
538 lines
15 KiB
Go
538 lines
15 KiB
Go
// Copyright 2015 The Gogs Authors. All rights reserved.
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// Copyright 2018 The Gitea 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 git
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import (
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"bufio"
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"bytes"
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"context"
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"errors"
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"fmt"
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"io"
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"os/exec"
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"strconv"
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"strings"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/util"
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)
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// Commit represents a git commit.
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type Commit struct {
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Branch string // Branch this commit belongs to
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Tree
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ID SHA1 // The ID of this commit object
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Author *Signature
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Committer *Signature
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CommitMessage string
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Signature *CommitGPGSignature
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Parents []SHA1 // SHA1 strings
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submoduleCache *ObjectCache
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}
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// CommitGPGSignature represents a git commit signature part.
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type CommitGPGSignature struct {
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Signature string
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Payload string // TODO check if can be reconstruct from the rest of commit information to not have duplicate data
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}
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// Message returns the commit message. Same as retrieving CommitMessage directly.
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func (c *Commit) Message() string {
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return c.CommitMessage
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}
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// Summary returns first line of commit message.
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func (c *Commit) Summary() string {
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return strings.Split(strings.TrimSpace(c.CommitMessage), "\n")[0]
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}
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// ParentID returns oid of n-th parent (0-based index).
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// It returns nil if no such parent exists.
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func (c *Commit) ParentID(n int) (SHA1, error) {
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if n >= len(c.Parents) {
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return SHA1{}, ErrNotExist{"", ""}
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}
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return c.Parents[n], nil
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}
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// Parent returns n-th parent (0-based index) of the commit.
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func (c *Commit) Parent(n int) (*Commit, error) {
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id, err := c.ParentID(n)
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if err != nil {
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return nil, err
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}
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parent, err := c.repo.getCommit(id)
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if err != nil {
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return nil, err
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}
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return parent, nil
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}
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// ParentCount returns number of parents of the commit.
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// 0 if this is the root commit, otherwise 1,2, etc.
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func (c *Commit) ParentCount() int {
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return len(c.Parents)
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}
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// GetCommitByPath return the commit of relative path object.
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func (c *Commit) GetCommitByPath(relpath string) (*Commit, error) {
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return c.repo.getCommitByPathWithID(c.ID, relpath)
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}
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// AddChanges marks local changes to be ready for commit.
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func AddChanges(repoPath string, all bool, files ...string) error {
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return AddChangesWithArgs(repoPath, globalCommandArgs, all, files...)
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}
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// AddChangesWithArgs marks local changes to be ready for commit.
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func AddChangesWithArgs(repoPath string, globalArgs []string, all bool, files ...string) error {
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cmd := NewCommandNoGlobals(append(globalArgs, "add")...)
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if all {
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cmd.AddArguments("--all")
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}
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cmd.AddArguments("--")
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_, _, err := cmd.AddArguments(files...).RunStdString(&RunOpts{Dir: repoPath})
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return err
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}
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// CommitChangesOptions the options when a commit created
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type CommitChangesOptions struct {
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Committer *Signature
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Author *Signature
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Message string
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}
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// CommitChanges commits local changes with given committer, author and message.
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// If author is nil, it will be the same as committer.
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func CommitChanges(repoPath string, opts CommitChangesOptions) error {
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cargs := make([]string, len(globalCommandArgs))
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copy(cargs, globalCommandArgs)
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return CommitChangesWithArgs(repoPath, cargs, opts)
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}
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// CommitChangesWithArgs commits local changes with given committer, author and message.
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// If author is nil, it will be the same as committer.
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func CommitChangesWithArgs(repoPath string, args []string, opts CommitChangesOptions) error {
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cmd := NewCommandNoGlobals(args...)
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if opts.Committer != nil {
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cmd.AddArguments("-c", "user.name="+opts.Committer.Name, "-c", "user.email="+opts.Committer.Email)
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}
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cmd.AddArguments("commit")
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if opts.Author == nil {
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opts.Author = opts.Committer
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}
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if opts.Author != nil {
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cmd.AddArguments(fmt.Sprintf("--author='%s <%s>'", opts.Author.Name, opts.Author.Email))
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}
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cmd.AddArguments("-m", opts.Message)
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_, _, err := cmd.RunStdString(&RunOpts{Dir: repoPath})
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// No stderr but exit status 1 means nothing to commit.
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if err != nil && err.Error() == "exit status 1" {
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return nil
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}
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return err
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}
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// AllCommitsCount returns count of all commits in repository
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func AllCommitsCount(ctx context.Context, repoPath string, hidePRRefs bool, files ...string) (int64, error) {
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args := []string{"--all", "--count"}
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if hidePRRefs {
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args = append([]string{"--exclude=" + PullPrefix + "*"}, args...)
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}
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cmd := NewCommand(ctx, "rev-list")
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cmd.AddArguments(args...)
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if len(files) > 0 {
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cmd.AddArguments("--")
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cmd.AddArguments(files...)
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}
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stdout, _, err := cmd.RunStdString(&RunOpts{Dir: repoPath})
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if err != nil {
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return 0, err
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}
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return strconv.ParseInt(strings.TrimSpace(stdout), 10, 64)
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}
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// CommitsCountFiles returns number of total commits of until given revision.
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func CommitsCountFiles(ctx context.Context, repoPath string, revision, relpath []string) (int64, error) {
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cmd := NewCommand(ctx, "rev-list", "--count")
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cmd.AddArguments(revision...)
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if len(relpath) > 0 {
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cmd.AddArguments("--")
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cmd.AddArguments(relpath...)
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}
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stdout, _, err := cmd.RunStdString(&RunOpts{Dir: repoPath})
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if err != nil {
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return 0, err
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}
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return strconv.ParseInt(strings.TrimSpace(stdout), 10, 64)
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}
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// CommitsCount returns number of total commits of until given revision.
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func CommitsCount(ctx context.Context, repoPath string, revision ...string) (int64, error) {
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return CommitsCountFiles(ctx, repoPath, revision, []string{})
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}
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// CommitsCount returns number of total commits of until current revision.
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func (c *Commit) CommitsCount() (int64, error) {
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return CommitsCount(c.repo.Ctx, c.repo.Path, c.ID.String())
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}
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// CommitsByRange returns the specific page commits before current revision, every page's number default by CommitsRangeSize
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func (c *Commit) CommitsByRange(page, pageSize int) ([]*Commit, error) {
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return c.repo.commitsByRange(c.ID, page, pageSize)
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}
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// CommitsBefore returns all the commits before current revision
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func (c *Commit) CommitsBefore() ([]*Commit, error) {
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return c.repo.getCommitsBefore(c.ID)
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}
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// HasPreviousCommit returns true if a given commitHash is contained in commit's parents
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func (c *Commit) HasPreviousCommit(commitHash SHA1) (bool, error) {
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this := c.ID.String()
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that := commitHash.String()
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if this == that {
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return false, nil
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}
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_, _, err := NewCommand(c.repo.Ctx, "merge-base", "--is-ancestor", that, this).RunStdString(&RunOpts{Dir: c.repo.Path})
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if err == nil {
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return true, nil
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}
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var exitError *exec.ExitError
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if errors.As(err, &exitError) {
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if exitError.ProcessState.ExitCode() == 1 && len(exitError.Stderr) == 0 {
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return false, nil
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}
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}
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return false, err
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}
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// CommitsBeforeLimit returns num commits before current revision
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func (c *Commit) CommitsBeforeLimit(num int) ([]*Commit, error) {
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return c.repo.getCommitsBeforeLimit(c.ID, num)
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}
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// CommitsBeforeUntil returns the commits between commitID to current revision
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func (c *Commit) CommitsBeforeUntil(commitID string) ([]*Commit, error) {
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endCommit, err := c.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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return c.repo.CommitsBetween(c, endCommit)
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}
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// SearchCommitsOptions specify the parameters for SearchCommits
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type SearchCommitsOptions struct {
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Keywords []string
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Authors, Committers []string
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After, Before string
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All bool
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}
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// NewSearchCommitsOptions construct a SearchCommitsOption from a space-delimited search string
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func NewSearchCommitsOptions(searchString string, forAllRefs bool) SearchCommitsOptions {
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var keywords, authors, committers []string
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var after, before string
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fields := strings.Fields(searchString)
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for _, k := range fields {
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switch {
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case strings.HasPrefix(k, "author:"):
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authors = append(authors, strings.TrimPrefix(k, "author:"))
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case strings.HasPrefix(k, "committer:"):
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committers = append(committers, strings.TrimPrefix(k, "committer:"))
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case strings.HasPrefix(k, "after:"):
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after = strings.TrimPrefix(k, "after:")
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case strings.HasPrefix(k, "before:"):
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before = strings.TrimPrefix(k, "before:")
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default:
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keywords = append(keywords, k)
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}
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}
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return SearchCommitsOptions{
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Keywords: keywords,
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Authors: authors,
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Committers: committers,
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After: after,
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Before: before,
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All: forAllRefs,
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}
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}
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// SearchCommits returns the commits match the keyword before current revision
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func (c *Commit) SearchCommits(opts SearchCommitsOptions) ([]*Commit, error) {
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return c.repo.searchCommits(c.ID, opts)
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}
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// GetFilesChangedSinceCommit get all changed file names between pastCommit to current revision
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func (c *Commit) GetFilesChangedSinceCommit(pastCommit string) ([]string, error) {
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return c.repo.getFilesChanged(pastCommit, c.ID.String())
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}
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// FileChangedSinceCommit Returns true if the file given has changed since the the past commit
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// YOU MUST ENSURE THAT pastCommit is a valid commit ID.
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func (c *Commit) FileChangedSinceCommit(filename, pastCommit string) (bool, error) {
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return c.repo.FileChangedBetweenCommits(filename, pastCommit, c.ID.String())
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}
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// HasFile returns true if the file given exists on this commit
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// This does only mean it's there - it does not mean the file was changed during the commit.
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func (c *Commit) HasFile(filename string) (bool, error) {
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_, err := c.GetBlobByPath(filename)
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if err != nil {
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return false, err
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}
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return true, nil
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}
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// GetFileContent reads a file content as a string or returns false if this was not possible
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func (c *Commit) GetFileContent(filename string, limit int) (string, error) {
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entry, err := c.GetTreeEntryByPath(filename)
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if err != nil {
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return "", err
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}
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r, err := entry.Blob().DataAsync()
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if err != nil {
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return "", err
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}
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defer r.Close()
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if limit > 0 {
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bs := make([]byte, limit)
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n, err := util.ReadAtMost(r, bs)
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if err != nil {
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return "", err
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}
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return string(bs[:n]), nil
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}
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bytes, err := io.ReadAll(r)
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if err != nil {
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return "", err
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}
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return string(bytes), 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 (c *Commit) GetSubModules() (*ObjectCache, error) {
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if c.submoduleCache != nil {
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return c.submoduleCache, nil
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}
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entry, err := c.GetTreeEntryByPath(".gitmodules")
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if err != nil {
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if _, ok := err.(ErrNotExist); ok {
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return nil, nil
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}
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return nil, err
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}
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rd, err := entry.Blob().DataAsync()
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if err != nil {
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return nil, err
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}
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defer rd.Close()
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scanner := bufio.NewScanner(rd)
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c.submoduleCache = newObjectCache()
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var ismodule bool
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var path string
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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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c.submoduleCache.Set(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 c.submoduleCache, nil
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}
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// GetSubModule get the sub module according entryname
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func (c *Commit) GetSubModule(entryname string) (*SubModule, error) {
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modules, err := c.GetSubModules()
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if err != nil {
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return nil, err
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}
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if modules != nil {
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module, has := modules.Get(entryname)
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if has {
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return module.(*SubModule), nil
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}
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}
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return nil, nil
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}
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// GetBranchName gets the closest branch name (as returned by 'git name-rev --name-only')
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func (c *Commit) GetBranchName() (string, error) {
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args := []string{
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"name-rev",
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}
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if CheckGitVersionAtLeast("2.13.0") == nil {
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args = append(args, "--exclude", "refs/tags/*")
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}
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args = append(args, "--name-only", "--no-undefined", c.ID.String())
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data, _, err := NewCommand(c.repo.Ctx, args...).RunStdString(&RunOpts{Dir: c.repo.Path})
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if err != nil {
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// handle special case where git can not describe commit
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if strings.Contains(err.Error(), "cannot describe") {
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return "", nil
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}
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return "", err
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}
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// name-rev commitID output will be "master" or "master~12"
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return strings.SplitN(strings.TrimSpace(data), "~", 2)[0], nil
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}
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// LoadBranchName load branch name for commit
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func (c *Commit) LoadBranchName() (err error) {
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if len(c.Branch) != 0 {
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return
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}
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c.Branch, err = c.GetBranchName()
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return
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}
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// GetTagName gets the current tag name for given commit
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func (c *Commit) GetTagName() (string, error) {
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data, _, err := NewCommand(c.repo.Ctx, "describe", "--exact-match", "--tags", "--always", c.ID.String()).RunStdString(&RunOpts{Dir: c.repo.Path})
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if err != nil {
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// handle special case where there is no tag for this commit
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if strings.Contains(err.Error(), "no tag exactly matches") {
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return "", nil
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}
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return "", err
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}
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return strings.TrimSpace(data), nil
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}
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// CommitFileStatus represents status of files in a commit.
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type CommitFileStatus struct {
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Added []string
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Removed []string
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Modified []string
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}
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// NewCommitFileStatus creates a CommitFileStatus
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func NewCommitFileStatus() *CommitFileStatus {
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return &CommitFileStatus{
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[]string{}, []string{}, []string{},
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}
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}
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func parseCommitFileStatus(fileStatus *CommitFileStatus, stdout io.Reader) {
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rd := bufio.NewReader(stdout)
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peek, err := rd.Peek(1)
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if err != nil {
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if err != io.EOF {
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log.Error("Unexpected error whilst reading from git log --name-status. Error: %v", err)
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}
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return
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}
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if peek[0] == '\n' || peek[0] == '\x00' {
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_, _ = rd.Discard(1)
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}
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for {
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modifier, err := rd.ReadSlice('\x00')
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if err != nil {
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if err != io.EOF {
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log.Error("Unexpected error whilst reading from git log --name-status. Error: %v", err)
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}
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return
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}
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file, err := rd.ReadString('\x00')
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if err != nil {
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if err != io.EOF {
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log.Error("Unexpected error whilst reading from git log --name-status. Error: %v", err)
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}
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return
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}
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file = file[:len(file)-1]
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switch modifier[0] {
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case 'A':
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fileStatus.Added = append(fileStatus.Added, file)
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case 'D':
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fileStatus.Removed = append(fileStatus.Removed, file)
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case 'M':
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fileStatus.Modified = append(fileStatus.Modified, file)
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}
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}
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}
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// GetCommitFileStatus returns file status of commit in given repository.
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func GetCommitFileStatus(ctx context.Context, repoPath, commitID string) (*CommitFileStatus, error) {
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stdout, w := io.Pipe()
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done := make(chan struct{})
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fileStatus := NewCommitFileStatus()
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go func() {
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parseCommitFileStatus(fileStatus, stdout)
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close(done)
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}()
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stderr := new(bytes.Buffer)
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args := []string{"log", "--name-status", "-c", "--pretty=format:", "--parents", "--no-renames", "-z", "-1", commitID}
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err := NewCommand(ctx, args...).Run(&RunOpts{
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Dir: repoPath,
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Stdout: w,
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Stderr: stderr,
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})
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w.Close() // Close writer to exit parsing goroutine
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if err != nil {
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return nil, ConcatenateError(err, stderr.String())
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}
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<-done
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return fileStatus, nil
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}
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// GetFullCommitID returns full length (40) of commit ID by given short SHA in a repository.
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func GetFullCommitID(ctx context.Context, repoPath, shortID string) (string, error) {
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commitID, _, err := NewCommand(ctx, "rev-parse", shortID).RunStdString(&RunOpts{Dir: repoPath})
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if err != nil {
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if strings.Contains(err.Error(), "exit status 128") {
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return "", ErrNotExist{shortID, ""}
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|
}
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return "", err
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|
}
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|
return strings.TrimSpace(commitID), nil
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|
}
|
|
|
|
// GetRepositoryDefaultPublicGPGKey returns the default public key for this commit
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|
func (c *Commit) GetRepositoryDefaultPublicGPGKey(forceUpdate bool) (*GPGSettings, error) {
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|
if c.repo == nil {
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return nil, nil
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|
}
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return c.repo.GetDefaultPublicGPGKey(forceUpdate)
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}
|