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# frozen_string_literal: true
module DiffHelper
def mark_inline_diffs(old_line, new_line)
old_diffs, new_diffs = Gitlab::Diff::InlineDiff.new(old_line, new_line).inline_diffs
marked_old_line = Gitlab::Diff::InlineDiffMarker.new(old_line).mark(old_diffs, mode: :deletion)
marked_new_line = Gitlab::Diff::InlineDiffMarker.new(new_line).mark(new_diffs, mode: :addition)
[marked_old_line, marked_new_line]
end
def diffs_expanded?
params[:expanded].present?
end
def diff_view
@diff_view ||= begin
diff_views = %w(inline parallel)
diff_view = params[:view] || cookies[:diff_view]
diff_view = diff_views.first unless diff_views.include?(diff_view)
diff_view.to_sym
end
end
def diff_options
options = { ignore_whitespace_change: hide_whitespace?, expanded: diffs_expanded? }
if action_name == 'diff_for_path'
options[:expanded] = true
options[:paths] = params.values_at(:old_path, :new_path)
end
options
end
def diff_match_line(old_pos, new_pos, text: '', view: :inline, bottom: false)
content_line_class = %w[line_content match]
content_line_class << 'parallel' if view == :parallel
line_num_class = %w[diff-line-num unfold js-unfold]
line_num_class << 'js-unfold-bottom' if bottom
html = []
if old_pos
html << content_tag(:td, '...', class: [*line_num_class, 'old_line'], data: { linenumber: old_pos })
html << content_tag(:td, text, class: [*content_line_class, 'left-side']) if view == :parallel
end
if new_pos
html << content_tag(:td, '...', class: [*line_num_class, 'new_line'], data: { linenumber: new_pos })
html << content_tag(:td, text, class: [*content_line_class, ('right-side' if view == :parallel)])
end
html.join.html_safe
end
def diff_line_content(line)
if line.blank?
" ".html_safe
else
# `sub` and substring-ing would destroy HTML-safeness of `line`
if line.start_with?('+', '-', ' ')
line.dup.tap do |line|
line[0] = ''
end
else
line
end
end
end
def parallel_diff_discussions(left, right, diff_file)
return unless @grouped_diff_discussions
discussions_left = discussions_right = nil
if left && left.discussable? && (left.unchanged? || left.removed?)
line_code = diff_file.line_code(left)
discussions_left = @grouped_diff_discussions[line_code]
end
if right && right.discussable? && right.added?
line_code = diff_file.line_code(right)
discussions_right = @grouped_diff_discussions[line_code]
end
[discussions_left, discussions_right]
end
def inline_diff_btn
diff_btn('Inline', 'inline', diff_view == :inline)
end
def parallel_diff_btn
diff_btn('Side-by-side', 'parallel', diff_view == :parallel)
end
def submodule_link(blob, ref, repository = @repository)
project_url, tree_url = submodule_links(blob, ref, repository)
commit_id = if tree_url.nil?
Commit.truncate_sha(blob.id)
else
link_to Commit.truncate_sha(blob.id), tree_url
end
[
content_tag(:span, link_to(truncate(blob.name, length: 40), project_url)),
'@',
content_tag(:span, commit_id, class: 'commit-sha')
].join(' ').html_safe
end
def diff_file_blob_raw_url(diff_file, only_path: false)
project_raw_url(@project, tree_join(diff_file.content_sha, diff_file.file_path), only_path: only_path)
end
def diff_file_old_blob_raw_url(diff_file, only_path: false)
sha = diff_file.old_content_sha
return unless sha
project_raw_url(@project, tree_join(diff_file.old_content_sha, diff_file.old_path), only_path: only_path)
end
def diff_file_blob_raw_path(diff_file)
diff_file_blob_raw_url(diff_file, only_path: true)
end
def diff_file_old_blob_raw_path(diff_file)
diff_file_old_blob_raw_url(diff_file, only_path: true)
end
def diff_file_html_data(project, diff_file_path, diff_commit_id)
{
blob_diff_path: project_blob_diff_path(project,
tree_join(diff_commit_id, diff_file_path)),
view: diff_view
}
end
def editable_diff?(diff_file)
!diff_file.deleted_file? && @merge_request && @merge_request.source_project
end
def diff_file_changed_icon(diff_file)
if diff_file.deleted_file?
"file-deletion"
elsif diff_file.new_file?
"file-addition"
else
"file-modified"
end
end
def diff_file_changed_icon_color(diff_file)
if diff_file.deleted_file?
"cred"
elsif diff_file.new_file?
"cgreen"
end
end
private
def diff_btn(title, name, selected)
params_copy = safe_params.dup
params_copy[:view] = name
# Always use HTML to handle case where JSON diff rendered this button
params_copy.delete(:format)
link_to url_for(params_copy), id: "#{name}-diff-btn", class: (selected ? 'btn active' : 'btn'), data: { view_type: name } do
title
end
end
def commit_diff_whitespace_link(project, commit, options)
url = project_commit_path(project, commit.id, params_with_whitespace)
toggle_whitespace_link(url, options)
end
def diff_merge_request_whitespace_link(project, merge_request, options)
url = diffs_project_merge_request_path(project, merge_request, params_with_whitespace)
toggle_whitespace_link(url, options)
end
def diff_compare_whitespace_link(project, from, to, options)
url = project_compare_path(project, from, to, params_with_whitespace)
toggle_whitespace_link(url, options)
end
def hide_whitespace?
params[:w] == '1'
end
def params_with_whitespace
hide_whitespace? ? request.query_parameters.except(:w) : request.query_parameters.merge(w: 1)
end
def toggle_whitespace_link(url, options)
options[:class] = [*options[:class], 'btn btn-default'].join(' ')
link_to "#{hide_whitespace? ? 'Show' : 'Hide'} whitespace changes", url, class: options[:class]
end
def render_overflow_warning?(diffs_collection)
diffs = @merge_request_diff.presence || diffs_collection.diff_files
diffs.overflow?
end
def diff_file_path_text(diff_file, max: 60)
path = diff_file.new_path
return path unless path.size > max && max > 3
"...#{path[-(max - 3)..-1]}"
end
end
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