134 lines
4 KiB
Ruby
134 lines
4 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Ci
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module Ansi2json
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class Converter
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def convert(stream, new_state)
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@lines = []
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@state = State.new(new_state, stream.size)
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append = false
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truncated = false
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cur_offset = stream.tell
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if cur_offset > @state.offset
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@state.offset = cur_offset
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truncated = true
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else
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stream.seek(@state.offset)
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append = @state.offset > 0
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end
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start_offset = @state.offset
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@state.set_current_line!(style: Style.new(@state.inherited_style))
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stream.each_line do |line|
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s = StringScanner.new(line)
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convert_line(s)
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end
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# This must be assigned before flushing the current line
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# or the @current_line.offset will advance to the very end
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# of the trace. Instead we want @last_line_offset to always
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# point to the beginning of last line.
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@state.set_last_line_offset
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flush_current_line
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# TODO: replace OpenStruct with a better type
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# https://gitlab.com/gitlab-org/gitlab/issues/34305
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OpenStruct.new(
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lines: @lines,
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state: @state.encode,
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append: append,
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truncated: truncated,
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offset: start_offset,
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size: stream.tell - start_offset,
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total: stream.size
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)
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end
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private
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def convert_line(scanner)
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until scanner.eos?
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if scanner.scan(Gitlab::Regex.build_trace_section_regex)
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handle_section(scanner)
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elsif scanner.scan(/\e([@-_])(.*?)([@-~])/)
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handle_sequence(scanner)
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elsif scanner.scan(/\e(([@-_])(.*?)?)?$/)
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break
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elsif scanner.scan(/</)
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@state.current_line << '<'
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elsif scanner.scan(/\r?\n/)
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# we advance the offset of the next current line
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# so it does not start from \n
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flush_current_line(advance_offset: scanner.matched_size)
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else
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@state.current_line << scanner.scan(/./m)
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end
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@state.offset += scanner.matched_size
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end
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end
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def handle_sequence(scanner)
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indicator = scanner[1]
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commands = scanner[2].split ';'
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terminator = scanner[3]
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# We are only interested in color and text style changes - triggered by
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# sequences starting with '\e[' and ending with 'm'. Any other control
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# sequence gets stripped (including stuff like "delete last line")
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return unless indicator == '[' && terminator == 'm'
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@state.update_style(commands)
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end
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def handle_section(scanner)
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action = scanner[1]
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timestamp = scanner[2]
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section = scanner[3]
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section_name = sanitize_section_name(section)
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if action == "start"
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handle_section_start(section_name, timestamp)
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elsif action == "end"
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handle_section_end(section_name, timestamp)
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end
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end
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def handle_section_start(section, timestamp)
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flush_current_line unless @state.current_line.empty?
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@state.open_section(section, timestamp)
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end
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def handle_section_end(section, timestamp)
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return unless @state.section_open?(section)
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flush_current_line unless @state.current_line.empty?
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@state.close_section(section, timestamp)
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# ensure that section end is detached from the last
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# line in the section
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flush_current_line
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end
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def flush_current_line(advance_offset: 0)
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@lines << @state.current_line.to_h
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@state.set_current_line!(advance_offset: advance_offset)
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end
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def sanitize_section_name(section)
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section.to_s.downcase.gsub(/[^a-z0-9]/, '-')
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end
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end
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end
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end
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end
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