Class: Gitlab::Git::Blob

Inherits:
Object
  • Object
show all
Includes:
EncodingHelper, Linguist::BlobHelper
Defined in:
lib/gitlab_git/blob.rb

Constant Summary collapse

MAX_DATA_DISPLAY_SIZE =

This number is the maximum amount of data that we want to display to the user. We load as much as we can for encoding detection (Linguist) and LFS pointer parsing. All other cases where we need full blob data should use load_all_data!.

10485760

Constants included from EncodingHelper

EncodingHelper::ENCODING_CONFIDENCE_THRESHOLD

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from EncodingHelper

#encode!, #encode_utf8

Constructor Details

#initialize(options) ⇒ Blob

Returns a new instance of Blob.



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# File 'lib/gitlab_git/blob.rb', line 251

def initialize(options)
  %w(id name path size data mode commit_id binary).each do |key|
    self.send("#{key}=", options[key.to_sym])
  end

  @loaded_all_data = false
  # Retain the actual size before it is encoded
  @loaded_size = @data.bytesize if @data
end

Instance Attribute Details

#binary ⇒ Object

Returns the value of attribute binary.



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# File 'lib/gitlab_git/blob.rb', line 16

def binary
  @binary
end

#commit_id ⇒ Object

Returns the value of attribute commit_id.



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# File 'lib/gitlab_git/blob.rb', line 16

def commit_id
  @commit_id
end

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/gitlab_git/blob.rb', line 16

def data
  @data
end

#id ⇒ Object

Returns the value of attribute id.



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# File 'lib/gitlab_git/blob.rb', line 16

def id
  @id
end

#loaded_size ⇒ Object

Returns the value of attribute loaded_size.



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# File 'lib/gitlab_git/blob.rb', line 16

def loaded_size
  @loaded_size
end

#mode ⇒ Object

Returns the value of attribute mode.



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# File 'lib/gitlab_git/blob.rb', line 16

def mode
  @mode
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/gitlab_git/blob.rb', line 16

def name
  @name
end

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/gitlab_git/blob.rb', line 16

def path
  @path
end

#size ⇒ Object

Returns the value of attribute size.



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# File 'lib/gitlab_git/blob.rb', line 16

def size
  @size
end

Class Method Details

.commit(repository, options, action = :add) ⇒ Object

Commit file in repository and return commit sha

options should contain next structure:

file: {
  content: 'Lorem ipsum...',
  path: 'documents/story.txt',
  update: true
},
author: {
  email: '[email protected]',
  name: 'Test User',
  time: Time.now
},
committer: {
  email: '[email protected]',
  name: 'Test User',
  time: Time.now
},
commit: {
  message: 'Wow such commit',
  branch: 'master',
  update_ref: false
}

Raises:



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# File 'lib/gitlab_git/blob.rb', line 124

def commit(repository, options, action = :add)
  file = options[:file]
  update = file[:update].nil? ? true : file[:update]
  author = options[:author]
  committer = options[:committer]
  commit = options[:commit]
  repo = repository.rugged
  ref = commit[:branch]
  update_ref = commit[:update_ref].nil? ? true : commit[:update_ref]
  parents = []

  unless ref.start_with?('refs/')
    ref = 'refs/heads/' + ref
  end

  path_name = PathHelper.normalize_path(file[:path])
  # Abort if any invalid characters remain (e.g. ../foo)
  raise Repository::InvalidBlobName.new("Invalid path") if path_name.each_filename.to_a.include?('..')

  filename = path_name.to_s
  index = repo.index

  unless repo.empty?
    rugged_ref = repo.references[ref]
    raise Repository::InvalidRef.new("Invalid branch name") unless rugged_ref
    last_commit = rugged_ref.target
    index.read_tree(last_commit.tree)
    parents = [last_commit]
  end

  if action == :remove
    index.remove(filename)
  else
    if action == :rename
      old_path_name = PathHelper.normalize_path(file[:previous_path])
      old_filename = old_path_name.to_s
      index.remove(old_filename)
    end

    mode = 0o100644
    file_entry = index.get(filename)

    if file_entry
      raise Repository::InvalidBlobName.new("Filename already exists; update not allowed") unless update
      # Preserve the current file mode if one is available
      mode = file_entry[:mode] if file_entry[:mode]
    end

    content = file[:content]
    detect = CharlockHolmes::EncodingDetector.new.detect(content) if content

    unless detect && detect[:type] == :binary
      # When writing to the repo directly as we are doing here,
      # the `core.autocrlf` config isn't taken into account.
      content.gsub!("\r\n", "\n") if repository.autocrlf
    end

    oid = repo.write(content, :blob)
    index.add(path: filename, oid: oid, mode: mode)
  end

  opts = {}
  opts[:tree] = index.write_tree(repo)
  opts[:author] = author
  opts[:committer] = committer
  opts[:message] = commit[:message]
  opts[:parents] = parents
  opts[:update_ref] = ref if update_ref

  Rugged::Commit.create(repo, opts)
end

.find(repository, sha, path) ⇒ Object 



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# File 'lib/gitlab_git/blob.rb', line 19

def find(repository, sha, path)
  commit = repository.lookup(sha)
  root_tree = commit.tree

  blob_entry = find_entry_by_path(repository, root_tree.oid, path)

  return nil unless blob_entry

  if blob_entry[:type] == :commit
    submodule_blob(blob_entry, path, sha)
  else
    blob = repository.lookup(blob_entry[:oid])

    if blob
      Blob.new(
        id: blob.oid,
        name: blob_entry[:name],
        size: blob.size,
        data: blob.content(MAX_DATA_DISPLAY_SIZE),
        mode: blob_entry[:filemode].to_s(8),
        path: path,
        commit_id: sha,
        binary: blob.binary?
      )
    end
  end
end

.find_entry_by_path(repository, root_id, path) ⇒ Object

Recursive search of blob id by path

Ex.

blog/            # oid: 1a
  app/           # oid: 2a
    models/      # oid: 3a
    file.rb      # oid: 4a

Blob.find_entry_by_path(repo, ‘1a’, ‘app/file.rb’) # => ‘4a’



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# File 'lib/gitlab_git/blob.rb', line 69

def find_entry_by_path(repository, root_id, path)
  root_tree = repository.lookup(root_id)
  # Strip leading slashes
  path[/^\/*/] = ''
  path_arr = path.split('/')

  entry = root_tree.find do |entry|
    entry[:name] == path_arr[0]
  end

  return nil unless entry

  if path_arr.size > 1
    return nil unless entry[:type] == :tree
    path_arr.shift
    find_entry_by_path(repository, entry[:oid], path_arr.join('/'))
  else
    [:blob, :commit].include?(entry[:type]) ? entry : nil
  end
end

.raw(repository, sha) ⇒ Object 



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# File 'lib/gitlab_git/blob.rb', line 47

def raw(repository, sha)
  blob = repository.lookup(sha)

  Blob.new(
    id: blob.oid,
    size: blob.size,
    data: blob.content(MAX_DATA_DISPLAY_SIZE),
    binary: blob.binary?
  )
end

.remove(repository, options) ⇒ Object

Remove file from repository and return commit sha

options should contain next structure:

file: {
  path: 'documents/story.txt'
},
author: {
  email: '[email protected]',
  name: 'Test User',
  time: Time.now
},
committer: {
  email: '[email protected]',
  name: 'Test User',
  time: Time.now
},
commit: {
  message: 'Remove FILENAME',
  branch: 'master'
}



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# File 'lib/gitlab_git/blob.rb', line 217

def remove(repository, options)
  commit(repository, options, :remove)
end

.rename(repository, options) ⇒ Object

Rename file from repository and return commit sha

options should contain next structure:

file: {
  previous_path: 'documents/old_story.txt'
  path: 'documents/story.txt'
  content: 'Lorem ipsum...',
  update: true
},
author: {
  email: '[email protected]',
  name: 'Test User',
  time: Time.now
},
committer: {
  email: '[email protected]',
  name: 'Test User',
  time: Time.now
},
commit: {
  message: 'Rename FILENAME',
  branch: 'master'
}



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# File 'lib/gitlab_git/blob.rb', line 246

def rename(repository, options)
  commit(repository, options, :rename)
end

.submodule_blob(blob_entry, path, sha) ⇒ Object 



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# File 'lib/gitlab_git/blob.rb', line 90

def submodule_blob(blob_entry, path, sha)
  Blob.new(
    id: blob_entry[:oid],
    name: blob_entry[:name],
    data: '',
    path: path,
    commit_id: sha,
  )
end

Instance Method Details

#binary? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gitlab_git/blob.rb', line 261

def binary?
  @binary.nil? ? super : @binary == true
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gitlab_git/blob.rb', line 265

def empty?
  !data || data == ''
end

#lfs_oid ⇒ Object 



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# File 'lib/gitlab_git/blob.rb', line 297

def lfs_oid
  if has_lfs_version_key?
    oid = data.match(/(?<=sha256:)([0-9a-f]{64})/)
    return oid[1] if oid
  end

  nil
end

#lfs_pointer? ⇒ Boolean

Valid LFS object pointer is a text file consisting of version oid size see github.com/github/git-lfs/blob/v1.1.0/docs/spec.md#the-pointer

Returns:

  • (Boolean) 


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# File 'lib/gitlab_git/blob.rb', line 293

def lfs_pointer?
  has_lfs_version_key? && lfs_oid.present? && lfs_size.present?
end

#lfs_size ⇒ Object 



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# File 'lib/gitlab_git/blob.rb', line 306

def lfs_size
  if has_lfs_version_key?
    size = data.match(/(?<=size )([0-9]+)/)
    return size[1] if size
  end

  nil
end

#load_all_data!(repository) ⇒ Object

Load all blob data (not just the first MAX_DATA_DISPLAY_SIZE bytes) into memory as a Ruby string.



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# File 'lib/gitlab_git/blob.rb', line 275

def load_all_data!(repository)
  return if @data == '' # don't mess with submodule blobs
  return @data if @loaded_all_data

  @loaded_all_data = true
  @data = repository.lookup(id).content
  @loaded_size = @data.bytesize
end

#truncated? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gitlab_git/blob.rb', line 315

def truncated?
  size && (size > loaded_size)
end