102 lines
No EOL
3.6 KiB
Ruby
102 lines
No EOL
3.6 KiB
Ruby
# Implements the logic behind the rake tasks for annotations like
|
|
#
|
|
# rake notes
|
|
# rake notes:optimize
|
|
#
|
|
# and friends. See <tt>rake -T notes</tt> and <tt>railties/lib/tasks/annotations.rake</tt>.
|
|
#
|
|
# Annotation objects are triplets <tt>:line</tt>, <tt>:tag</tt>, <tt>:text</tt> that
|
|
# represent the line where the annotation lives, its tag, and its text. Note
|
|
# the filename is not stored.
|
|
#
|
|
# Annotations are looked for in comments and modulus whitespace they have to
|
|
# start with the tag optionally followed by a colon. Everything up to the end
|
|
# of the line (or closing ERb comment tag) is considered to be their text.
|
|
class SourceAnnotationExtractor
|
|
class Annotation < Struct.new(:line, :tag, :text)
|
|
|
|
# Returns a representation of the annotation that looks like this:
|
|
#
|
|
# [126] [TODO] This algorithm is simple and clearly correct, make it faster.
|
|
#
|
|
# If +options+ has a flag <tt>:tag</tt> the tag is shown as in the example above.
|
|
# Otherwise the string contains just line and text.
|
|
def to_s(options={})
|
|
s = "[%3d] " % line
|
|
s << "[#{tag}] " if options[:tag]
|
|
s << text
|
|
end
|
|
end
|
|
|
|
# Prints all annotations with tag +tag+ under the root directories +app+, +lib+,
|
|
# and +test+ (recursively). Only filenames with extension +.builder+, +.rb+,
|
|
# +.rxml+, +.rjs+, +.rhtml+, or +.erb+ are taken into account. The +options+
|
|
# hash is passed to each annotation's +to_s+.
|
|
#
|
|
# This class method is the single entry point for the rake tasks.
|
|
def self.enumerate(tag, options={})
|
|
extractor = new(tag)
|
|
extractor.display(extractor.find, options)
|
|
end
|
|
|
|
attr_reader :tag
|
|
|
|
def initialize(tag)
|
|
@tag = tag
|
|
end
|
|
|
|
# Returns a hash that maps filenames under +dirs+ (recursively) to arrays
|
|
# with their annotations. Only files with annotations are included, and only
|
|
# those with extension +.builder+, +.rb+, +.rxml+, +.rjs+, +.rhtml+, and +.erb+
|
|
# are taken into account.
|
|
def find(dirs=%w(app lib test))
|
|
dirs.inject({}) { |h, dir| h.update(find_in(dir)) }
|
|
end
|
|
|
|
# Returns a hash that maps filenames under +dir+ (recursively) to arrays
|
|
# with their annotations. Only files with annotations are included, and only
|
|
# those with extension +.builder+, +.rb+, +.rxml+, +.rjs+, +.rhtml+, and +.erb+
|
|
# are taken into account.
|
|
def find_in(dir)
|
|
results = {}
|
|
|
|
Dir.glob("#{dir}/*") do |item|
|
|
next if File.basename(item)[0] == ?.
|
|
|
|
if File.directory?(item)
|
|
results.update(find_in(item))
|
|
elsif item =~ /\.(builder|(r(?:b|xml|js)))$/
|
|
results.update(extract_annotations_from(item, /#\s*(#{tag}):?\s*(.*)$/))
|
|
elsif item =~ /\.(rhtml|erb)$/
|
|
results.update(extract_annotations_from(item, /<%\s*#\s*(#{tag}):?\s*(.*?)\s*%>/))
|
|
end
|
|
end
|
|
|
|
results
|
|
end
|
|
|
|
# If +file+ is the filename of a file that contains annotations this method returns
|
|
# a hash with a single entry that maps +file+ to an array of its annotations.
|
|
# Otherwise it returns an empty hash.
|
|
def extract_annotations_from(file, pattern)
|
|
lineno = 0
|
|
result = File.readlines(file).inject([]) do |list, line|
|
|
lineno += 1
|
|
next list unless line =~ pattern
|
|
list << Annotation.new(lineno, $1, $2)
|
|
end
|
|
result.empty? ? {} : { file => result }
|
|
end
|
|
|
|
# Prints the mapping from filenames to annotations in +results+ ordered by filename.
|
|
# The +options+ hash is passed to each annotation's +to_s+.
|
|
def display(results, options={})
|
|
results.keys.sort.each do |file|
|
|
puts "#{file}:"
|
|
results[file].each do |note|
|
|
puts " * #{note.to_s(options)}"
|
|
end
|
|
puts
|
|
end
|
|
end
|
|
end |