Class: Ace::Support::MacClipboard::Reader

Inherits:
Object
  • Object
show all
Extended by:
FFI::Library
Defined in:
lib/ace/support/mac_clipboard/reader.rb

Class Method Summary collapse

Class Method Details

.available_types(pasteboard) ⇒ Object

Get all available UTI types on the pasteboard



55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
 
# File 'lib/ace/support/mac_clipboard/reader.rb', line 55

def self.available_types(pasteboard)
  types_array = objc_send(pasteboard, "types")
  return [] unless types_array && !types_array.null?

  count = objc_msgSend_uint(types_array, sel_registerName("count"))
  return [] if count.zero?

  types = []
  count.times do |i|
    type_obj = objc_msgSend_uint64(types_array, sel_registerName("objectAtIndex:"), i)
    next unless type_obj && !type_obj.null?

    utf8_selector = sel_registerName("UTF8String")
    type_cstr = objc_msgSend(type_obj, utf8_selector)
    next if type_cstr.null?

    types << type_cstr.read_string
  end

  types
rescue => e
  warn "Error in available_types: #{e.message}"
  warn e.backtrace.first(5)
  []
end

.create_nsstring(str) ⇒ Object

Helper to create NSString from Ruby string



203
204
205
206
207
208
209
210
211
 
# File 'lib/ace/support/mac_clipboard/reader.rb', line 203

def self.create_nsstring(str)
  ns_string_class = objc_getClass("NSString")
  return nil unless ns_string_class

  utf8_selector = sel_registerName("stringWithUTF8String:")
  objc_msgSend_id(ns_string_class, utf8_selector, FFI::MemoryPointer.from_string(str))
rescue
  nil
end

.get_general_pasteboard ⇒ Object

Get the general (system) pasteboard



49
50
51
52
 
# File 'lib/ace/support/mac_clipboard/reader.rb', line 49

def self.get_general_pasteboard
  ns_pasteboard_class = objc_getClass("NSPasteboard")
  objc_send(ns_pasteboard_class, "generalPasteboard")
end

.objc_send(obj, selector, *args) ⇒ Object

Helper to send Objective-C messages



24
25
26
27
28
29
30
31
 
# File 'lib/ace/support/mac_clipboard/reader.rb', line 24

def self.objc_send(obj, selector, *args)
  sel = sel_registerName(selector.to_s)
  if args.empty?
    objc_msgSend(obj, sel)
  else
    objc_msgSend_id(obj, sel, *args)
  end
end

.read ⇒ Object

Read clipboard content



34
35
36
37
38
39
40
41
42
43
44
45
46
 
# File 'lib/ace/support/mac_clipboard/reader.rb', line 34

def self.read
  return {success: false, error: "Not on macOS"} unless RUBY_PLATFORM.match?(/darwin/)

  pasteboard = get_general_pasteboard
  return {success: false, error: "Could not access pasteboard"} unless pasteboard

  types = available_types(pasteboard)
  return {success: true, types: [], text: nil, attachments: []} if types.empty?

  {success: true, types: types, raw_pasteboard: pasteboard}
rescue => e
  {success: false, error: e.message}
end

.read_file_urls(pasteboard) ⇒ Object

Read file URLs from pasteboard



128
129
130
131
132
133
134
135
136
137
138
139
140
141
 
# File 'lib/ace/support/mac_clipboard/reader.rb', line 128

def self.read_file_urls(pasteboard)
  # Try NSFilenamesPboardType first (Finder uses this for copied files)
  file_paths = read_filenames_pboard_type(pasteboard)
  return file_paths if file_paths.any?

  # Fallback to public.file-url
  file_paths = read_public_file_url(pasteboard)
  return file_paths if file_paths.any?

  []
rescue => e
  warn "Error reading file URLs: #{e.message}"
  []
end

.read_filenames_pboard_type(pasteboard) ⇒ Object

Read file paths from NSFilenamesPboardType (used by Finder)



144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
 
# File 'lib/ace/support/mac_clipboard/reader.rb', line 144

def self.read_filenames_pboard_type(pasteboard)
  uti_str = create_nsstring("NSFilenamesPboardType")
  return [] unless uti_str

  # Get property list (NSArray of file path strings)
  prop_list_sel = sel_registerName("propertyListForType:")
  array_obj = objc_msgSend_id(pasteboard, prop_list_sel, uti_str)
  return [] unless array_obj && !array_obj.null?

  # Get count of files
  count_sel = sel_registerName("count")
  count = objc_msgSend_uint(array_obj, count_sel)
  return [] if count.zero?

  # Extract file paths
  file_paths = []
  count.times do |i|
    obj_at_index_sel = sel_registerName("objectAtIndex:")
    path_obj = objc_msgSend_uint64(array_obj, obj_at_index_sel, i)
    next unless path_obj && !path_obj.null?

    utf8_sel = sel_registerName("UTF8String")
    cstr = objc_msgSend(path_obj, utf8_sel)
    next if cstr.null?

    path = cstr.read_string
    file_paths << path if File.exist?(path)
  end

  file_paths
rescue => e
  warn "Error reading NSFilenamesPboardType: #{e.message}"
  []
end

.read_public_file_url(pasteboard) ⇒ Object

Read file URL from public.file-url



180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
 
# File 'lib/ace/support/mac_clipboard/reader.rb', line 180

def self.read_public_file_url(pasteboard)
  data = read_type(pasteboard, "public.file-url")
  return [] unless data

  # Parse URL from data
  url_str = data.force_encoding("UTF-8").strip

  # Remove "file://" prefix if present
  url_str = url_str.sub(%r{^file://}, "")

  # URL decode
  url_str = begin
    URI.decode_www_form_component(url_str)
  rescue
    url_str
  end

  File.exist?(url_str) ? [url_str] : []
rescue
  []
end

.read_string(pasteboard, uti) ⇒ Object

Read string content for text types



107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
 
# File 'lib/ace/support/mac_clipboard/reader.rb', line 107

def self.read_string(pasteboard, uti)
  # Try to get as string first
  objc_getClass("NSString")
  uti_str = create_nsstring(uti)
  return nil unless uti_str

  string_obj = objc_msgSend_id(pasteboard, sel_registerName("stringForType:"), uti_str)
  if string_obj && !string_obj.null?
    utf8_selector = sel_registerName("UTF8String")
    cstr = objc_msgSend(string_obj, utf8_selector)
    return cstr.read_string unless cstr.null?
  end

  # Fallback to reading as data
  data = read_type(pasteboard, uti)
  data&.force_encoding("UTF-8")
rescue
  nil
end

.read_type(pasteboard, uti) ⇒ Object

Read data for a specific UTI type



82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
 
# File 'lib/ace/support/mac_clipboard/reader.rb', line 82

def self.read_type(pasteboard, uti)
  # Create NSString for the UTI
  objc_getClass("NSString")
  uti_str = create_nsstring(uti)
  return nil unless uti_str

  # Get data from pasteboard
  data = objc_msgSend_id(pasteboard, sel_registerName("dataForType:"), uti_str)
  return nil unless data && !data.null?

  # Get byte length
  length = objc_msgSend_uint(data, sel_registerName("length"))
  return nil if length.zero?

  # Get bytes pointer
  bytes = objc_msgSend(data, sel_registerName("bytes"))
  return nil if bytes.null?

  # Read binary data
  bytes.read_bytes(length)
rescue
  nil
end