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core.rb
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string.rb
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Editing: string.rb
# frozen_string_literal: true require "rake/ext/core" class String rake_extension("ext") do # Replace the file extension with +newext+. If there is no extension on # the string, append the new extension to the end. If the new extension # is not given, or is the empty string, remove any existing extension. # # +ext+ is a user added method for the String class. # # This String extension comes from Rake def ext(newext="") return self.dup if [".", ".."].include? self if newext != "" newext = "." + newext unless newext =~ /^\./ end self.chomp(File.extname(self)) << newext end end rake_extension("pathmap") do # Explode a path into individual components. Used by +pathmap+. # # This String extension comes from Rake def pathmap_explode head, tail = File.split(self) return [self] if head == self return [tail] if head == "." || tail == "/" return [head, tail] if head == "/" return head.pathmap_explode + [tail] end protected :pathmap_explode # Extract a partial path from the path. Include +n+ directories from the # front end (left hand side) if +n+ is positive. Include |+n+| # directories from the back end (right hand side) if +n+ is negative. # # This String extension comes from Rake def pathmap_partial(n) dirs = File.dirname(self).pathmap_explode partial_dirs = if n > 0 dirs[0...n] elsif n < 0 dirs.reverse[0...-n].reverse else "." end File.join(partial_dirs) end protected :pathmap_partial # Perform the pathmap replacement operations on the given path. The # patterns take the form 'pat1,rep1;pat2,rep2...'. # # This String extension comes from Rake def pathmap_replace(patterns, &block) result = self patterns.split(";").each do |pair| pattern, replacement = pair.split(",") pattern = Regexp.new(pattern) if replacement == "*" && block_given? result = result.sub(pattern, &block) elsif replacement result = result.sub(pattern, replacement) else result = result.sub(pattern, "") end end result end protected :pathmap_replace # Map the path according to the given specification. The specification # controls the details of the mapping. The following special patterns are # recognized: # # <tt>%p</tt> :: The complete path. # <tt>%f</tt> :: The base file name of the path, with its file extension, # but without any directories. # <tt>%n</tt> :: The file name of the path without its file extension. # <tt>%d</tt> :: The directory list of the path. # <tt>%x</tt> :: The file extension of the path. An empty string if there # is no extension. # <tt>%X</tt> :: Everything *but* the file extension. # <tt>%s</tt> :: The alternate file separator if defined, otherwise use # # the standard file separator. # <tt>%%</tt> :: A percent sign. # # The <tt>%d</tt> specifier can also have a numeric prefix (e.g. '%2d'). # If the number is positive, only return (up to) +n+ directories in the # path, starting from the left hand side. If +n+ is negative, return (up # to) +n+ directories from the right hand side of the path. # # Examples: # # 'a/b/c/d/file.txt'.pathmap("%2d") => 'a/b' # 'a/b/c/d/file.txt'.pathmap("%-2d") => 'c/d' # # Also the <tt>%d</tt>, <tt>%p</tt>, <tt>%f</tt>, <tt>%n</tt>, # <tt>%x</tt>, and <tt>%X</tt> operators can take a pattern/replacement # argument to perform simple string substitutions on a particular part of # the path. The pattern and replacement are separated by a comma and are # enclosed by curly braces. The replacement spec comes after the % # character but before the operator letter. (e.g. "%{old,new}d"). # Multiple replacement specs should be separated by semi-colons (e.g. # "%{old,new;src,bin}d"). # # Regular expressions may be used for the pattern, and back refs may be # used in the replacement text. Curly braces, commas and semi-colons are # excluded from both the pattern and replacement text (let's keep parsing # reasonable). # # For example: # # "src/org/onestepback/proj/A.java".pathmap("%{^src,class}X.class") # # returns: # # "class/org/onestepback/proj/A.class" # # If the replacement text is '*', then a block may be provided to perform # some arbitrary calculation for the replacement. # # For example: # # "/path/to/file.TXT".pathmap("%X%{.*,*}x") { |ext| # ext.downcase # } # # Returns: # # "/path/to/file.txt" # # This String extension comes from Rake def pathmap(spec=nil, &block) return self if spec.nil? result = "".dup spec.scan(/%\{[^}]*\}-?\d*[sdpfnxX%]|%-?\d+d|%.|[^%]+/) do |frag| case frag when "%f" result << File.basename(self) when "%n" result << File.basename(self).ext when "%d" result << File.dirname(self) when "%x" result << File.extname(self) when "%X" result << self.ext when "%p" result << self when "%s" result << (File::ALT_SEPARATOR || File::SEPARATOR) when "%-" # do nothing when "%%" result << "%" when /%(-?\d+)d/ result << pathmap_partial($1.to_i) when /^%\{([^}]*)\}(\d*[dpfnxX])/ patterns, operator = $1, $2 result << pathmap("%" + operator).pathmap_replace(patterns, &block) when /^%/ fail ArgumentError, "Unknown pathmap specifier #{frag} in '#{spec}'" else result << frag end end result end end end
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