Module: SnippetsHelper

Included in:
Gitlab::SnippetSearchResults
Defined in:
app/helpers/snippets_helper.rb

Instance Method Summary collapse

Instance Method Details

#bounded_line_numbers(line, min, max, surrounding_lines) ⇒ Object

Get an array of line numbers surrounding a matching line, bounded by min/max.


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# File 'app/helpers/snippets_helper.rb', line 15

def bounded_line_numbers(line, min, max, surrounding_lines)
  lower = line - surrounding_lines > min ? line - surrounding_lines : min
  upper = line + surrounding_lines < max ? line + surrounding_lines : max
  (lower..upper).to_a
end

#chunk_snippet(snippet, query, surrounding_lines = 3) ⇒ Object

'Chunkify' entire snippet. Splits the snippet data into matching lines + surrounding_lines() worth of unmatching lines.


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# File 'app/helpers/snippets_helper.rb', line 44

def chunk_snippet(snippet, query, surrounding_lines = 3)
  lined_content = snippet.content.split("\n")
  used_lines = matching_lines(lined_content, surrounding_lines, query)

  snippet_chunk = []
  snippet_chunks = []
  snippet_start_line = 0
  last_line = -1

  # Go through each used line, and add consecutive lines as a single chunk
  # to the snippet chunk array.
  used_lines.each do |line_number|
    if last_line < 0
      # Start a new chunk.
      snippet_start_line = line_number
      snippet_chunk << lined_content[line_number]
    elsif last_line == line_number - 1
      # Consecutive line, continue chunk.
      snippet_chunk << lined_content[line_number]
    else
      # Non-consecutive line, add chunk to chunk array.
      snippet_chunks << {
        data: snippet_chunk.join("\n"),
        start_line: snippet_start_line + 1
      }

      # Start a new chunk.
      snippet_chunk = [lined_content[line_number]]
      snippet_start_line = line_number
    end
    last_line = line_number
  end
  # Add final chunk to chunk array
  snippet_chunks << {
    data: snippet_chunk.join("\n"),
    start_line: snippet_start_line + 1
  }

  # Return snippet with chunk array
  { snippet_object: snippet, snippet_chunks: snippet_chunks }
end

#matching_lines(lined_content, surrounding_lines, query) ⇒ Object

Returns a sorted set of lines to be included in a snippet preview. This ensures matching adjacent lines do not display duplicated surrounding code.


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# File 'app/helpers/snippets_helper.rb', line 26

def matching_lines(lined_content, surrounding_lines, query)
  used_lines = []
  lined_content.each_with_index do |line, line_number|
    used_lines.concat bounded_line_numbers(
      line_number,
      0,
      lined_content.size,
      surrounding_lines
    ) if line.include?(query)
  end

  used_lines.uniq.sort
end

#reliable_snippet_path(snippet) ⇒ Object 


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# File 'app/helpers/snippets_helper.rb', line 2

def reliable_snippet_path(snippet)
  if snippet.project_id?
    namespace_project_snippet_path(snippet.project.namespace,
                                   snippet.project, snippet)
  else
    snippet_path(snippet)
  end
end