summaryrefslogtreecommitdiff
path: root/app/helpers/snippets_helper.rb
blob: fd7e58826b522c42c4e80a36eced5c8ab515497d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
# frozen_string_literal: true

module SnippetsHelper
  def snippets_upload_path(snippet, user)
    return unless user

    if snippet&.persisted?
      upload_path('personal_snippet', id: snippet.id)
    else
      upload_path('user', id: user.id)
    end
  end

  def download_raw_snippet_button(snippet)
    link_to(icon('download'),
            gitlab_raw_snippet_path(snippet, inline: false),
            target: '_blank',
            rel: 'noopener noreferrer',
            class: "btn btn-sm has-tooltip",
            title: 'Download',
            data: { container: 'body' })
  end

  # Return the path of a snippets index for a user or for a project
  #
  # @returns String, path to snippet index
  def subject_snippets_path(subject = nil, opts = nil)
    if subject.is_a?(Project)
      project_snippets_path(subject, opts)
    else # assume subject === User
      dashboard_snippets_path(opts)
    end
  end

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

  # Returns a sorted set of lines to be included in a snippet preview.
  # This ensures matching adjacent lines do not display duplicated
  # surrounding code.
  #
  # @returns Array, unique and sorted.
  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.downcase.include?(query.downcase)
    end

    used_lines.uniq.sort
  end

  # 'Chunkify' entire snippet.  Splits the snippet data into matching lines +
  # surrounding_lines() worth of unmatching lines.
  #
  # @returns a hash with {snippet_object, snippet_chunks:{data,start_line}}
  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

  def snippet_embed_tag(snippet)
    content_tag(:script, nil, src: gitlab_snippet_url(snippet, format: :js))
  end

  def snippet_embed_input(snippet)
    content_tag(:input,
                nil,
                type: :text,
                readonly: true,
                class: 'js-snippet-url-area snippet-embed-input form-control',
                data: { url: gitlab_snippet_url(snippet) },
                value: snippet_embed_tag(snippet),
                autocomplete: 'off')
  end

  def snippet_badge(snippet)
    return unless attrs = snippet_badge_attributes(snippet)

    css_class, text = attrs
    tag.span(class: %w[badge badge-gray]) do
      concat(tag.i(class: ['fa', css_class]))
      concat(' ')
      concat(text)
    end
  end

  def snippet_badge_attributes(snippet)
    if snippet.private?
      ['fa-lock', _('private')]
    end
  end

  def embedded_raw_snippet_button
    blob = @snippet.blob
    return if blob.empty? || blob.binary? || blob.stored_externally?

    link_to(external_snippet_icon('doc-code'),
            gitlab_raw_snippet_url(@snippet),
            class: 'btn',
            target: '_blank',
            rel: 'noopener noreferrer',
            title: 'Open raw')
  end

  def embedded_snippet_download_button
    link_to(external_snippet_icon('download'),
            gitlab_raw_snippet_url(@snippet, inline: false),
            class: 'btn',
            target: '_blank',
            title: 'Download',
            rel: 'noopener noreferrer')
  end
end