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# Controller for viewing a file's blame
class Projects::BlobController < Projects::ApplicationController
include ExtractsPath
include CreatesCommit
include RendersBlob
include ActionView::Helpers::SanitizeHelper
# Raised when given an invalid file path
InvalidPathError = Class.new(StandardError)
prepend_before_action :authenticate_user!, only: [:edit]
before_action :require_non_empty_project, except: [:new, :create]
before_action :authorize_download_code!
before_action :authorize_edit_tree!, only: [:new, :create, :update, :destroy]
before_action :assign_blob_vars
before_action :commit, except: [:new, :create]
before_action :blob, except: [:new, :create]
before_action :require_branch_head, only: [:edit, :update]
before_action :editor_variables, except: [:show, :preview, :diff]
before_action :validate_diff_params, only: :diff
before_action :set_last_commit_sha, only: [:edit, :update]
def new
commit unless @repository.empty?
end
def create
create_commit(Files::CreateService, success_notice: "The file has been successfully created.",
success_path: -> { project_blob_path(@project, File.join(@branch_name, @file_path)) },
failure_view: :new,
failure_path: project_new_blob_path(@project, @ref))
end
def show
conditionally_expand_blob(@blob)
respond_to do |format|
format.html do
show_html
end
format.json do
show_json
end
end
end
def edit
if can_collaborate_with_project?
blob.load_all_data!
else
redirect_to action: 'show'
end
end
def update
@path = params[:file_path] if params[:file_path].present?
create_commit(Files::UpdateService, success_path: -> { after_edit_path },
failure_view: :edit,
failure_path: project_blob_path(@project, @id))
rescue Files::UpdateService::FileChangedError
@conflict = true
render :edit
end
def preview
@content = params[:content]
@blob.load_all_data!
diffy = Diffy::Diff.new(@blob.data, @content, diff: '-U 3', include_diff_info: true)
diff_lines = diffy.diff.scan(/.*\n/)[2..-1]
diff_lines = Gitlab::Diff::Parser.new.parse(diff_lines)
@diff_lines = Gitlab::Diff::Highlight.new(diff_lines, repository: @repository).highlight
render layout: false
end
def destroy
create_commit(Files::DeleteService, success_notice: "The file has been successfully deleted.",
success_path: -> { project_tree_path(@project, @branch_name) },
failure_view: :show,
failure_path: project_blob_path(@project, @id))
end
def diff
apply_diff_view_cookie!
@blob.load_all_data!
@lines = Gitlab::Highlight.highlight(@blob.path, @blob.data, repository: @repository).lines
@form = UnfoldForm.new(params)
@lines = @lines[@form.since - 1..@form.to - 1].map(&:html_safe)
if @form.bottom?
@match_line = ''
else
lines_length = @lines.length - 1
line = [@form.since, lines_length].join(',')
@match_line = "@@ -#{line}+#{line} @@"
end
render layout: false
end
private
def blob
@blob ||= @repository.blob_at(@commit.id, @path)
if @blob
@blob
else
if tree = @repository.tree(@commit.id, @path)
if tree.entries.any?
return redirect_to project_tree_path(@project, File.join(@ref, @path))
end
end
return render_404
end
end
def commit
@commit = @repository.commit(@ref)
return render_404 unless @commit
end
def assign_blob_vars
@id = params[:id]
@ref, @path = extract_ref(@id)
rescue InvalidPathError
render_404
end
def after_edit_path
from_merge_request = MergeRequestsFinder.new(current_user, project_id: @project.id).execute.find_by(iid: params[:from_merge_request_iid])
if from_merge_request && @branch_name == @ref
diffs_project_merge_request_path(from_merge_request.target_project, from_merge_request) +
"##{hexdigest(@path)}"
else
project_blob_path(@project, File.join(@branch_name, @path))
end
end
def editor_variables
@branch_name = params[:branch_name]
@file_path =
if action_name.to_s == 'create'
if params[:file].present?
params[:file_name] = params[:file].original_filename
end
File.join(@path, params[:file_name])
elsif params[:file_path].present?
params[:file_path]
else
@path
end
if params[:file].present?
params[:content] = Base64.encode64(params[:file].read)
params[:encoding] = 'base64'
end
@commit_params = {
file_path: @file_path,
commit_message: params[:commit_message],
previous_path: @path,
file_content: params[:content],
file_content_encoding: params[:encoding],
last_commit_sha: params[:last_commit_sha]
}
end
def validate_diff_params
if [:since, :to, :offset].any? { |key| params[key].blank? }
render nothing: true
end
end
def set_last_commit_sha
@last_commit_sha = Gitlab::Git::Commit
.last_for_path(@repository, @ref, @path).sha
end
def show_html
environment_params = @repository.branch_exists?(@ref) ? { ref: @ref } : { commit: @commit }
@environment = EnvironmentsFinder.new(@project, current_user, environment_params).execute.last
@last_commit = @repository.last_commit_for_path(@commit.id, @blob.path)
render 'show'
end
def show_json
json = blob_json(@blob)
return render_404 unless json
path_segments = @path.split('/')
path_segments.pop
tree_path = path_segments.join('/')
render json: json.merge(
path: blob.path,
name: blob.name,
extension: blob.extension,
size: blob.raw_size,
mime_type: blob.mime_type,
binary: blob.raw_binary?,
simple_viewer: blob.simple_viewer&.class&.partial_name,
rich_viewer: blob.rich_viewer&.class&.partial_name,
show_viewer_switcher: !!blob.show_viewer_switcher?,
render_error: blob.simple_viewer&.render_error || blob.rich_viewer&.render_error,
raw_path: project_raw_path(project, @id),
blame_path: project_blame_path(project, @id),
commits_path: project_commits_path(project, @id),
tree_path: project_tree_path(project, File.join(@ref, tree_path)),
permalink: project_blob_path(project, File.join(@commit.id, @path))
)
end
end
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