Class: RSCM::CvsLogParser

Inherits:
AbstractLogParser show all
Defined in:
lib/rscm/scm/cvs_log_parser.rb

Constant Summary collapse

REVISION_SEPARATOR = 
/^----------------------------$/
ENTRY_SEPARATOR = 
/^=============================================================================$/
STATES =

The state field is “Exp” both for added and modified files. retards! We need some additional logic to figure out whether it is added or not. Maybe look at the revision. (1.1 means new I think. - deal with it later)

{"dead" => RevisionFile::DELETED, "Exp" => RevisionFile::MODIFIED}

Instance Attribute Summary collapse

Attributes inherited from AbstractLogParser

#io

Instance Method Summary collapse

Methods inherited from AbstractLogParser

#convert_all_slashes_to_forward_slashes, #error, #had_error?, #read_until_matching_line

Constructor Details

#initialize(io) ⇒ CvsLogParser

Returns a new instance of CvsLogParser.



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 15

def initialize(io)
  super(io)
  @log = ""
end

Instance Attribute Details

#cvsmodule ⇒ Object

Returns the value of attribute cvsmodule.



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 13

def cvsmodule
  @cvsmodule
end

#cvspath ⇒ Object

Returns the value of attribute cvspath.



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 12

def cvspath
  @cvspath
end

Instance Method Details

#determine_previous_native_revision_identifier(revision) ⇒ Object 



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 117

def determine_previous_native_revision_identifier(revision)
  if revision =~ /(.*)\.(.*)/
    big_version_number = $1
    small_version_number = $2.to_i
    if small_version_number == 1
      nil
    else
      "#{big_version_number}.#{small_version_number - 1}"
    end
  else
    nil
  end
end

#extract_match(string, regexp) ⇒ Object 



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 144

def extract_match(string, regexp)
  if string=~regexp
    return($1)
  else
    ""
  end
end

#extract_required_match(string, regexp) ⇒ Object 



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 136

def extract_required_match(string, regexp)
  if string=~regexp
    return($1)
  else
    $stderr.puts("can't parse: '#{string}'\nexpected to match regexp: #{regexp.to_s}")
  end
end

#make_relative_to_module(file) ⇒ Object 



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 79

def make_relative_to_module(file)
  return file if cvspath.nil? || cvsmodule.nil? || file.nil?
  cvspath = convert_all_slashes_to_forward_slashes(self.cvspath)
  convert_all_slashes_to_forward_slashes(file).gsub(/^#{cvspath}\/#{cvsmodule}\//, "")
end

#next_log_entry ⇒ Object 



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 35

def next_log_entry
  read_until_matching_line(ENTRY_SEPARATOR)
end

#parse_cvs_time(time) ⇒ Object 



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 131

def parse_cvs_time(time)
  # 2003/11/09 15:39:25
  Time.utc(time[0..3], time[5..6], time[8..9], time[11..12], time[14..15], time[17..18])
end

#parse_file(file_entry) ⇒ Object 



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 85

def parse_file(file_entry)
  raise "can't parse: #{file_entry}" if file_entry =~ REVISION_SEPARATOR
     
  file_entry_lines = file_entry.split(/\r?\n/)
  file = RevisionFile.new

  file.native_revision_identifier =  extract_match(file_entry_lines[0], /revision (.*)$/)
  
  file.previous_native_revision_identifier = determine_previous_native_revision_identifier(file.native_revision_identifier)
  file.time = parse_cvs_time(extract_required_match(file_entry_lines[1], /date: (.*?)(;|$)/))
  file.developer = extract_match(file_entry_lines[1], /author: (.*?);/)
  
  state = extract_match(file_entry_lines[1], /state: (.*?);/)
  file.status = STATES[state]
  
  message_start = 2
  branches = nil
  if(file_entry_lines[2] =~ /^branches:\s+(.*);/)
    message_start = 3
    branches = $1
  end

  file.message = file_entry_lines[message_start..-1].join("\n")
     
  # Ignore the initial revision from import - we will have two of them
  if(file.message == "Initial revision" && branches == "1.1.1")
    return nil
  end

  file
end

#parse_files(log_entry, revisions) ⇒ Object 



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 51

def parse_files(log_entry, revisions)
  entries = split_entries(log_entry)

  entries[1..entries.length].each do |entry|
    file = parse_file(entry)
    next if file.nil?
    file.path = parse_path(entries[0])

    file.status = RevisionFile::ADDED if file.native_revision_identifier =~ /1\.1$/

    revision = revisions.add(file)
    # CVS doesn't have revision for revisions, use
    # Fisheye-style revision
#        revision.native_revision_identifier =  "MAIN:#{file.developer}:#{file.time.utc.strftime('%Y%m%d%H%M%S')}" if revision
  end
  nil
end

#parse_head_revision(first_entry) ⇒ Object 



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 69

def parse_head_revision(first_entry)
  head_revision = extract_match(first_entry, /^head: (.*?)$/m)
end

#parse_path(first_entry) ⇒ Object 



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 73

def parse_path(first_entry)
  working_file = extract_match(first_entry, /^Working file: (.*?)$/m)
  return convert_all_slashes_to_forward_slashes(working_file) unless working_file.nil? || working_file == ""
  make_relative_to_module(extract_required_match(first_entry, /^RCS file: (.*?)(,v|$)/m))
end

#parse_revisions ⇒ Object 



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 20

def parse_revisions
  revisions = Revisions.new
  while(log_entry = next_log_entry)
    @log<<log_entry
    @log<<""
    begin
      parse_files(log_entry, revisions)
    rescue Exception => e
      $stderr.puts("could not parse log entry: #{log_entry}\ndue to: #{e.message}\n\t")
      $stderr.puts(e.backtrace.join("\n\t"))
    end
  end
  revisions.sort!
end

#split_entries(log_entry) ⇒ Object 



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# File 'lib/rscm/scm/cvs_log_parser.rb', line 39

def split_entries(log_entry)
  entries = [""]
  log_entry.each_line do |line|
    if line=~REVISION_SEPARATOR
      entries << ""
    else
      entries[entries.length-1] << line
    end
  end
  entries
end