Class: Refinement::Changeset::FileModification

Inherits:
Object
  • Object
show all
Defined in:
lib/refinement/changeset/file_modification.rb

Overview

Represents a modification to a single file or directory on disk

Constant Summary collapse

DIRECTORY_CHANGE_TYPE =

Returns the change type for directories.

Returns:

  • (Symbol) —

    the change type for directories

:'had contents change'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path:, type:, prior_path: nil, contents_reader: -> { nil }, prior_contents_reader: -> { nil }) ⇒ FileModification

Returns a new instance of FileModification.



19
20
21
22
23
24
25
26
27
28
 
# File 'lib/refinement/changeset/file_modification.rb', line 19

def initialize(path:, type:,
               prior_path: nil,
               contents_reader: -> { nil },
               prior_contents_reader: -> { nil })
  @path = path
  @type = type
  @prior_path = prior_path
  @contents_reader = contents_reader
  @prior_contents_reader = prior_contents_reader
end

Instance Attribute Details

#path ⇒ Pathname (readonly)

Returns the path to the modified file.

Returns:

  • (Pathname) —

    the path to the modified file



11
12
13
 
# File 'lib/refinement/changeset/file_modification.rb', line 11

def path
  @path
end

#prior_path ⇒ Pathname, Nil (readonly)

Returns the prior path to the modified file, or ‘nil` if it was not renamed or copied.

Returns:

  • (Pathname, Nil) —

    the prior path to the modified file, or ‘nil` if it was not renamed or copied



14
15
16
 
# File 'lib/refinement/changeset/file_modification.rb', line 14

def prior_path
  @prior_path
end

#type ⇒ #to_s (readonly)

Returns the type of change that happened to this file.

Returns:

  • (#to_s) —

    the type of change that happened to this file



17
18
19
 
# File 'lib/refinement/changeset/file_modification.rb', line 17

def type
  @type
end

Instance Method Details

#contents ⇒ String

Returns the current contents of the file.

Returns:

  • (String) —

    the current contents of the file



118
119
120
121
122
123
124
125
 
# File 'lib/refinement/changeset/file_modification.rb', line 118

def contents
  @contents ||=
    begin
      @contents_reader[].tap { @contents_reader = nil } || DOES_NOT_EXIST
    rescue StandardError
      DOES_NOT_EXIST
    end
end

#prior_contents ⇒ String

Returns the prior contents of the file.

Returns:

  • (String) —

    the prior contents of the file



128
129
130
131
132
133
134
135
 
# File 'lib/refinement/changeset/file_modification.rb', line 128

def prior_contents
  @prior_contents ||=
    begin
      @prior_contents_reader[].tap { @prior_contents_reader = nil } || DOES_NOT_EXIST
    rescue StandardError
      DOES_NOT_EXIST
    end
end

#yaml_diff(keypath) ⇒ String, Nil

Returns a YAML string representing the diff of the file from the prior revision to the current revision at the given keypath in the YAML, or ‘nil` if there is no diff.

Parameters:

  • keypath (Array) —

    a list of indices passed to ‘dig`. An empty array is equivalent to the entire YAML document

Returns:

  • (String, Nil) —

    a YAML string representing the diff of the file from the prior revision to the current revision at the given keypath in the YAML, or ‘nil` if there is no diff



72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
 
# File 'lib/refinement/changeset/file_modification.rb', line 72

def yaml_diff(keypath)
  require 'yaml'

  @cached_yaml ||= {}

  dig_yaml = lambda do |yaml, path|
    return yaml if DOES_NOT_EXIST == yaml

    object = @cached_yaml[path] ||= YAML.safe_load(yaml, [Symbol])
    if keypath.empty?
      object
    elsif object.respond_to?(:dig)
      object.dig(*keypath)
    else # backwards compatibility
      keypath.reduce(object) do |acc, elem|
        acc[elem]
      end
    end
  end

  prior = dig_yaml[prior_contents, :prior]
  current = dig_yaml[contents, :current]

  require 'xcodeproj/differ'

  return unless (diff = Xcodeproj::Differ.diff(
    prior,
    current,
    key_1: 'prior_revision',
    key_2: 'current_revision'
  ))

  diff.to_yaml.prepend("#{path} changed at keypath #{keypath.inspect}\n")
end