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module Gitlab
module Git
class Wiki
DuplicatePageError = Class.new(StandardError)
OperationError = Class.new(StandardError)
PageNotFound = Class.new(GRPC::NotFound)
CommitDetails = Struct.new(:user_id, :username, :name, :email, :message) do
def to_h
{ user_id: user_id, username: username, name: name, email: email, message: message }
end
end
PageBlob = Struct.new(:name)
attr_reader :repository
def self.default_ref
'master'
end
# Initialize with a Gitlab::Git::Repository instance
def initialize(repository)
@repository = repository
end
def repository_exists?
@repository.exists?
end
def write_page(name, format, content, commit_details)
gollum_write_page(name, format, content, commit_details)
end
def update_page(page_path, title, format, content, commit_details)
gollum_update_page(page_path, title, format, content, commit_details)
end
def pages(limit: nil, sort: nil, direction_desc: false)
gollum_get_all_pages(limit: limit, sort: sort, direction_desc: direction_desc)
end
def page(title:, version: nil, dir: nil)
gollum_find_page(title: title, version: version, dir: dir)
end
def count_page_versions(page_path)
@repository.count_commits(ref: 'HEAD', path: page_path)
end
def preview_slug(title, format)
# Adapted from gollum gem (Gollum::Wiki#preview_page) to avoid
# using Rugged through a Gollum::Wiki instance
page_class = Gollum::Page
page = page_class.new(nil)
ext = page_class.format_to_ext(format.to_sym)
name = page_class.cname(title) + '.' + ext
blob = PageBlob.new(name)
page.populate(blob)
page.url_path
end
def gollum_wiki
@gollum_wiki ||= Gollum::Wiki.new(@repository.path)
end
private
def new_page(gollum_page)
Gitlab::Git::WikiPage.new(gollum_page, new_version(gollum_page, gollum_page.version.id))
end
def new_version(gollum_page, commit_id)
Gitlab::Git::WikiPageVersion.new(version(commit_id), gollum_page&.format)
end
def version(commit_id)
Gitlab::Git::Commit.find(@repository, commit_id)
end
def assert_type!(object, klass)
raise ArgumentError, "expected a #{klass}, got #{object.inspect}" unless object.is_a?(klass)
end
def committer_with_hooks(commit_details)
Gitlab::Git::CommitterWithHooks.new(self, commit_details.to_h)
end
def with_committer_with_hooks(commit_details)
committer = committer_with_hooks(commit_details)
yield committer
committer.commit
nil
end
# options:
# :page - The Integer page number.
# :per_page - The number of items per page.
# :limit - Total number of items to return.
def commits_from_page(gollum_page, options = {})
unless options[:limit]
options[:offset] = ([1, options.delete(:page).to_i].max - 1) * Gollum::Page.per_page
options[:limit] = (options.delete(:per_page) || Gollum::Page.per_page).to_i
end
@repository.log(ref: gollum_page.last_version.id,
path: gollum_page.path,
limit: options[:limit],
offset: options[:offset])
end
# Retrieve the page at that `page_path`, raising an error if it does not exist
def gollum_page_by_path(page_path)
page_name = Gollum::Page.canonicalize_filename(page_path)
page_dir = File.split(page_path).first
gollum_wiki.paged(page_name, page_dir) || (raise PageNotFound, page_path)
end
def gollum_write_page(name, format, content, commit_details)
assert_type!(format, Symbol)
assert_type!(commit_details, CommitDetails)
with_committer_with_hooks(commit_details) do |committer|
filename = File.basename(name)
dir = (tmp_dir = File.dirname(name)) == '.' ? '' : tmp_dir
gollum_wiki.write_page(filename, format, content, { committer: committer }, dir)
end
rescue Gollum::DuplicatePageError => e
raise Gitlab::Git::Wiki::DuplicatePageError, e.message
end
def gollum_update_page(page_path, title, format, content, commit_details)
assert_type!(format, Symbol)
assert_type!(commit_details, CommitDetails)
with_committer_with_hooks(commit_details) do |committer|
page = gollum_page_by_path(page_path)
# Instead of performing two renames if the title has changed,
# the update_page will only update the format and content and
# the rename_page will do anything related to moving/renaming
gollum_wiki.update_page(page, page.name, format, content, committer: committer)
gollum_wiki.rename_page(page, title, committer: committer)
end
end
def gollum_find_page(title:, version: nil, dir: nil)
if version
version = Gitlab::Git::Commit.find(@repository, version)&.id
return unless version
end
gollum_page = gollum_wiki.page(title, version, dir)
return unless gollum_page
new_page(gollum_page)
end
def gollum_get_all_pages(limit: nil, sort: nil, direction_desc: false)
gollum_wiki.pages(
limit: limit, sort: sort, direction_desc: direction_desc
).map do |gollum_page|
new_page(gollum_page)
end
end
end
end
end
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