Class: Soywiki::Renamer

Inherits:
Object
  • Object
show all
Includes:
PathHelper
Defined in:
lib/soywiki/renamer.rb

Constant Summary collapse 

/(\A|\s)([A-Z][a-z]+[A-Z0-9]\w*)/

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from PathHelper

#ensure_path, #in_repo, #repo_path=, #repo_relative

Constructor Details

#initialize(repo_path, old_name, new_name) ⇒ Renamer

Returns a new instance of Renamer.



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# File 'lib/soywiki/renamer.rb', line 8

def initialize(repo_path, old_name, new_name)
  @repo_path = ensure_path(repo_path)
  @old_path = ensure_path(old_name)
  @new_path = ensure_path(new_name)
  @old_name = repo_relative(@old_path).to_s
  @new_name = repo_relative(@new_path).to_s
  @memo = ["Updating inbound and outbound links..."]
end

Instance Attribute Details

#memo ⇒ Object (readonly)

Returns the value of attribute memo.



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# File 'lib/soywiki/renamer.rb', line 4

def memo
  @memo
end

#new_name ⇒ Object (readonly)

Returns the value of attribute new_name.



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# File 'lib/soywiki/renamer.rb', line 3

def new_name
  @new_name
end

#old_name ⇒ Object (readonly)

Returns the value of attribute old_name.



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# File 'lib/soywiki/renamer.rb', line 3

def old_name
  @old_name
end

#repo_path ⇒ Object (readonly)

Returns the value of attribute repo_path.



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# File 'lib/soywiki/renamer.rb', line 3

def repo_path
  @repo_path
end

Instance Method Details



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# File 'lib/soywiki/renamer.rb', line 89

def absolutize_unqualified_outbound_links
  memorize "Absolutizing unqualified inbound links"
  target_file = ensure_path(in_repo(new_name).to_s.to_file_path)
  if target_file.exist?
    text = target_file.read
    begin
      matches = text.scan(RELATIVE_LINK_REGEX).map {|x| x[1]}.
        select {|match| match.strip != "" }.
        select {|match| in_repo("#{namespace(:old)}/#{match}").exist? }
      puts memorize("  - In file #{target_file}: matches: #{matches.inspect}")

      text = text.gsub(RELATIVE_LINK_REGEX) do |match|
        if matches.include?($2)
          res = "#$1#{namespace(:old)}.#{$2}"
          memorize "  - In file #{target_file}: #{$2} -> #{res.strip}"
          res
        else
          memorize  "  - In file #{target_file}: skipping #{$2}"
          match
        end
      end
      File.open(target_file, 'w') {|f| f.puts text}
    rescue
      puts "Error processing #{target_file}: #$!"
    end
  end
end

#change_all_absolute_links ⇒ Object 



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# File 'lib/soywiki/renamer.rb', line 57

def change_all_absolute_links
  memorize "- Updating all absolute links"
  grep_for_files(page_title(:old), repo_path).each do |file|
    text = File.read(file)
    begin
      regex = /\b#{page_title(:old)}\b/
      matches = text.scan(regex)
      text = text.gsub(regex, page_title(:new))
      File.open(file, 'w') {|f| f.puts text}
      report file, page_title(:old), page_title(:new)
    rescue
      puts "Error processing #{file}: #$!"
    end
  end
end

#change_unqualified_inbound_links_in_same_namespace ⇒ Object 



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# File 'lib/soywiki/renamer.rb', line 73

def change_unqualified_inbound_links_in_same_namespace
  memorize "- Updating unqualified inbound links"
  grep_for_files(short_page_title(:old), in_repo(namespace(:old))).each do |file|
    text = File.read(file)
    begin
      text = text.gsub(/(\A|\s)(#{short_page_title(:old)}\b)/, '\1' + page_title(:new))
      File.open(file, 'w') {|f| f.puts text}
      report file, short_page_title(:old), new_name
    rescue
      puts "Error processing #{file}: #$!"
    end
  end
end

#grep_for_files(search, where, ignore = /(\.swp|\.swo)$/) ⇒ Object 



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# File 'lib/soywiki/renamer.rb', line 50

def grep_for_files(search, where, ignore=/(\.swp|\.swo)$/)
  cmd = "grep -rlF '#{search}' #{where}"
  puts cmd
  files = `#{cmd}`.strip.split(/\n/)
  ignore ? files.select { |f| f !~ ignore } : files
end

#memorize(message) ⇒ Object 



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# File 'lib/soywiki/renamer.rb', line 39

def memorize(message)
  @memo ||= []
  @memo << message if message.is_a?(String)
  @memo += message if message.is_a?(Array)
  message
end

#namespace(query = nil) ⇒ Object 



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# File 'lib/soywiki/renamer.rb', line 17

def namespace(query=nil)
  self.instance_variable_get("@#{query}_name").namespace
rescue
  nil
end

#page_title(query = nil) ⇒ Object 



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# File 'lib/soywiki/renamer.rb', line 23

def page_title(query=nil)
  self.instance_variable_get("@#{query}_name").to_page_title
rescue
  nil
end

#print_report ⇒ Object 



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# File 'lib/soywiki/renamer.rb', line 46

def print_report
  puts @memo.join("\n")
end

#rename ⇒ Object 



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# File 'lib/soywiki/renamer.rb', line 117

def rename
  # Three other cases to cover, involving namespaces:
  #
  # Case 1: newname is in same namespace as oldname
  #
  # In the directory for OldName's namespace, change all unqualified references to
  # OldName to NewName

  if namespace(:old) == namespace(:new)
    memorize "- Updating unqualified links in same namespace"
    grep_for_files(short_page_title(:old), in_repo(namespace(:old))).each do |file|
      text = File.read(file)
      begin
        text = text.gsub(/(\A|\s)(#{short_page_title(:old)})\b/, '\1' + short_page_title(:new))
        File.open(file, 'w') {|f| f.puts text}
        report file, short_page_title(:old), short_page_title(:new)
      rescue
        puts "Error processing #{file}: #$!"
      end
    end
    # Case 2: newname is in different namespace from oldname
    # oldname.namespace != newname.namespace
  else
    # In the directory for OldName's namespace, change all unqualified references to
    # OldName to newnamespace.NewName (i.e. NewName).
    change_unqualified_inbound_links_in_same_namespace
    # And in the renamed file, change all unqualified references to
    # PageName to oldnamespace.PageName
    absolutize_unqualified_outbound_links
  end

  # Finally,
  change_all_absolute_links
end

#report(file, oldname, newname) ⇒ Object 



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# File 'lib/soywiki/renamer.rb', line 35

def report(file, oldname, newname)
  @memo <<  "  - In #{file}: #{oldname} -> #{newname}"
end

#short_page_title(query = nil) ⇒ Object 



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# File 'lib/soywiki/renamer.rb', line 29

def short_page_title(query=nil)
  self.instance_variable_get("@#{query}_name").short_page_title
rescue
  nil
end