mirror of
https://github.com/go-gitea/gitea.git
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3a09d7aa8d
Most potential deadlock problems should have been fixed, and new code is unlikely to cause new problems with the new design. Also raise the minimum Git version required to 2.6.0 (released in 2015)
98 lines
2.9 KiB
Go
98 lines
2.9 KiB
Go
// Copyright 2025 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package attribute
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import (
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"bytes"
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"context"
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"errors"
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"fmt"
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"os"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/git/gitcmd"
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)
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func checkAttrCommand(gitRepo *git.Repository, treeish string, filenames, attributes []string) (*gitcmd.Command, []string, func(), error) {
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cancel := func() {}
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envs := []string{"GIT_FLUSH=1"}
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cmd := gitcmd.NewCommand("check-attr", "-z")
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if len(attributes) == 0 {
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cmd.AddArguments("--all")
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}
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// there is treeish, read from bare repo or temp index created by "read-tree"
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if treeish != "" {
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if git.DefaultFeatures().SupportCheckAttrOnBare {
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cmd.AddArguments("--source")
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cmd.AddDynamicArguments(treeish)
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} else {
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indexFilename, worktree, deleteTemporaryFile, err := gitRepo.ReadTreeToTemporaryIndex(treeish)
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if err != nil {
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return nil, nil, nil, err
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}
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cmd.AddArguments("--cached")
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envs = append(envs,
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"GIT_INDEX_FILE="+indexFilename,
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"GIT_WORK_TREE="+worktree,
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)
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cancel = deleteTemporaryFile
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}
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} else {
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// Read from existing index, in cases where the repo is bare and has an index,
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// or the work tree contains unstaged changes that shouldn't affect the attribute check.
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// It is caller's responsibility to add changed ".gitattributes" into the index if they want to respect the new changes.
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cmd.AddArguments("--cached")
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}
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cmd.AddDynamicArguments(attributes...)
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if len(filenames) > 0 {
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cmd.AddDashesAndList(filenames...)
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}
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return cmd, envs, cancel, nil
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}
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type CheckAttributeOpts struct {
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Filenames []string
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Attributes []string
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}
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// CheckAttributes return the attributes of the given filenames and attributes in the given treeish.
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// If treeish is empty, then it will use current working directory, otherwise it will use the provided treeish on the bare repo
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func CheckAttributes(ctx context.Context, gitRepo *git.Repository, treeish string, opts CheckAttributeOpts) (map[string]*Attributes, error) {
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cmd, envs, cancel, err := checkAttrCommand(gitRepo, treeish, opts.Filenames, opts.Attributes)
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if err != nil {
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return nil, err
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}
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defer cancel()
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stdout, _, err := cmd.WithEnv(append(os.Environ(), envs...)).
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WithDir(gitRepo.Path).
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RunStdBytes(ctx)
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if err != nil {
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return nil, fmt.Errorf("failed to run check-attr: %w", err)
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}
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fields := bytes.Split(stdout, []byte{'\000'})
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if len(fields)%3 != 1 {
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return nil, errors.New("wrong number of fields in return from check-attr")
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}
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attributesMap := make(map[string]*Attributes)
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for i := 0; i < (len(fields) / 3); i++ {
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filename := string(fields[3*i])
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attribute := string(fields[3*i+1])
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info := string(fields[3*i+2])
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attribute2info, ok := attributesMap[filename]
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if !ok {
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attribute2info = NewAttributes()
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attributesMap[filename] = attribute2info
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}
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attribute2info.m[attribute] = Attribute(info)
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}
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return attributesMap, nil
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}
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