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# frozen_string_literal: true
require 'method_source'
class Pry
class CodeFile
DEFAULT_EXT = '.rb'.freeze
# List of all supported languages.
# @return [Hash]
EXTENSIONS = {
%w[.py] => :python,
%w[.js] => :javascript,
%w[.css] => :css,
%w[.xml] => :xml,
%w[.php] => :php,
%w[.html] => :html,
%w[.diff] => :diff,
%w[.java] => :java,
%w[.json] => :json,
%w[.c .h] => :c,
%w[.rhtml] => :rhtml,
%w[.yaml .yml] => :yaml,
%w[.cpp .hpp .cc .h .cxx] => :cpp,
%w[.rb .ru .irbrc .gemspec .pryrc .rake] => :ruby
}.freeze
FILES = {
%w[Gemfile Rakefile Guardfile Capfile] => :ruby
}.freeze
# Store the current working directory. This allows show-source etc. to work if
# your process has changed directory since boot. [Issue #675]
INITIAL_PWD = Dir.pwd
# @return [Symbol] The type of code stored in this wrapper.
attr_reader :code_type
# @param [String] filename The name of a file with code to be detected
# @param [Symbol] code_type The type of code the `filename` contains
def initialize(filename, code_type = type_from_filename(filename))
@filename = filename
@code_type = code_type
end
# @return [String] The code contained in the current `@filename`.
def code
if @filename == Pry.eval_path
Pry.line_buffer.drop(1)
elsif Pry::Method::Patcher.code_for(@filename)
Pry::Method::Patcher.code_for(@filename)
else
path = abs_path
@code_type = type_from_filename(path)
File.read(path)
end
end
private
# @raise [MethodSource::SourceNotFoundError] if the `filename` is not
# readable for some reason.
# @return [String] absolute path for the given `filename`.
def abs_path
code_path.detect { |path| readable?(path) } ||
raise(MethodSource::SourceNotFoundError,
"Cannot open #{@filename.inspect} for reading.")
end
# @param [String] path
# @return [Boolean] if the path, with or without the default ext,
# is a readable file then `true`, otherwise `false`.
def readable?(path)
File.readable?(path) && !File.directory?(path) ||
File.readable?(path << DEFAULT_EXT)
end
# @return [Array] All the paths that contain code that Pry can use for its
# API's. Skips directories.
def code_path
[from_pwd, from_pry_init_pwd, *from_load_path]
end
# @param [String] filename
# @param [Symbol] default (:unknown) the file type to assume if none could be
# detected.
# @return [Symbol, nil] The SyntaxHighlighter type of a file from its
# extension, or `nil` if `:unknown`.
def type_from_filename(filename, default = :unknown)
_, @code_type = EXTENSIONS.find do |k, _|
k.any? { |ext| ext == File.extname(filename) }
end || FILES.find do |k, _|
k.any? { |file_name| file_name == File.basename(filename) }
end
code_type || default
end
# @return [String]
def from_pwd
File.expand_path(@filename, Dir.pwd)
end
# @return [String]
def from_pry_init_pwd
File.expand_path(@filename, INITIAL_PWD)
end
# @return [String]
def from_load_path
$LOAD_PATH.map { |path| File.expand_path(@filename, path) }
end
end
end
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