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48 lines
1.1 KiB
48 lines
1.1 KiB
5 years ago
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class CreateDiffRecordService < ApplicationService
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attr_reader :user, :obj, :column_name, :after, :before
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def initialize(user, obj, column_name, before, after)
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@user = user
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@obj = obj
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@before = before
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@after = after
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@column_name = column_name
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end
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def call
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ActiveRecord::Base.transaction do
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diff_record = DiffRecord.create!(user: user, container: obj, column_name: column_name)
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diff_record.create_diff_record_content!(content: diff_content)
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end
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end
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private
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def diff_content
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content = ''
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arr = []
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index = 0
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fragment_size = 1
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Diffy::Diff.new(before, after).each do |line|
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unless line.include?("\\ 文件尾没有 newline 字符")
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unless line =~ /^[\+-]/
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if arr.empty? && index < fragment_size
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content += line
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index += 1
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else
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index = 0
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arr << line
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arr.shift if arr.size > fragment_size
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end
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next
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end
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content += arr.join('') if arr.present?
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content += line
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arr.clear
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end
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end
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content
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end
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end
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