1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
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
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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
|
class Pry
module Helpers
module CommandHelpers
include OptionsHelpers
module_function
# Open a temp file and yield it to the block, closing it after
# @return [String] The path of the temp file
def temp_file(ext='.rb')
file = Tempfile.new(['pry', ext])
yield file
ensure
file.close(true) if file
end
def render_output(str, opts={})
if opts[:flood]
output.puts str
else
stagger_output str
end
end
# Return the file and line for a Binding.
# @param [Binding] target The binding
# @return [Array] The file and line
def file_and_line_from_binding(target)
file = target.eval('__FILE__')
line_num = target.eval('__LINE__')
if rbx?
if !target.instance_variable_defined?(:@__actual_file__)
target.instance_variable_set(:@__actual_file__, RbxPath.convert_path_to_full(target.variables.method.file.to_s))
end
file = target.instance_variable_get(:@__actual_file__).to_s
end
[file, line_num]
end
def internal_binding?(target)
m = target.eval("__method__").to_s
# class_eval is here because of http://jira.codehaus.org/browse/JRUBY-6753
["__binding__", "__binding_impl__", "class_eval"].include?(m)
end
def get_method_or_raise(name, target, opts={}, omit_help=false)
meth = Pry::Method.from_str(name, target, opts)
if name && !meth
command_error("The method '#{name}' could not be found.", omit_help)
end
(opts[:super] || 0).times do
if meth.super
meth = meth.super
else
command_error("'#{meth.name_with_owner}' has no super method.", omit_help)
end
end
if !meth || (!name && internal_binding?(target))
command_error("No method name given, and context is not a method.", omit_help, NonMethodContextError)
end
set_file_and_dir_locals(meth.source_file)
meth
end
def command_error(message, omit_help, klass=CommandError)
message += " Type `#{command_name} --help` for help." unless omit_help
raise klass, message
end
def make_header(meth, content=meth.source)
header = "\n#{Pry::Helpers::Text.bold('From:')} #{meth.source_file} "
if meth.source_type == :c
header << "(C Method):\n"
else
header << "@ line #{meth.source_line}:\n"
end
header << "#{Pry::Helpers::Text.bold("Number of lines:")} #{content.each_line.count.to_s}\n"
end
def invoke_editor(file, line, reloading)
raise CommandError, "Please set Pry.config.editor or export $VISUAL or $EDITOR" unless Pry.config.editor
if Pry.config.editor.respond_to?(:call)
args = [file, line, reloading][0...(Pry.config.editor.arity)]
editor_invocation = Pry.config.editor.call(*args)
else
editor_invocation = "#{Pry.config.editor} #{blocking_flag_for_editor(reloading)} #{start_line_syntax_for_editor(file, line)}"
end
return nil unless editor_invocation
if jruby?
begin
require 'spoon'
pid = Spoon.spawnp(*editor_invocation.split)
Process.waitpid(pid)
rescue FFI::NotFoundError
system(editor_invocation)
end
else
# Note we dont want to use Pry.config.system here as that
# may be invoked non-interactively (i.e via Open4), whereas we want to
# ensure the editor is always interactive
system(editor_invocation) or raise CommandError, "`#{editor_invocation}` gave exit status: #{$?.exitstatus}"
end
end
# Some editors that run outside the terminal allow you to control whether or
# not to block the process from which they were launched (in this case, Pry).
# For those editors, return the flag that produces the desired behavior.
def blocking_flag_for_editor(block)
case editor_name
when /^emacsclient/
'--no-wait' unless block
when /^[gm]vim/
'--nofork' if block
when /^jedit/
'-wait' if block
when /^mate/, /^subl/
'-w' if block
end
end
# Return the syntax for a given editor for starting the editor
# and moving to a particular line within that file
def start_line_syntax_for_editor(file_name, line_number)
if windows?
file_name = file_name.gsub(/\//, '\\')
end
# special case for 1st line
return file_name if line_number <= 1
case editor_name
when /^[gm]?vi/, /^emacs/, /^nano/, /^pico/, /^gedit/, /^kate/
"+#{line_number} #{file_name}"
when /^mate/, /^geany/
"-l #{line_number} #{file_name}"
when /^subl/
"#{file_name}:#{line_number}"
when /^uedit32/
"#{file_name}/#{line_number}"
when /^jedit/
"#{file_name} +line:#{line_number}"
else
if windows?
"#{file_name}"
else
"+#{line_number} #{file_name}"
end
end
end
# Get the name of the binary that Pry.config.editor points to.
#
# This is useful for deciding which flags we pass to the editor as
# we can just use the program's name and ignore any absolute paths.
#
# @example
# Pry.config.editor="/home/conrad/bin/textmate -w"
# editor_name
# # => textmate
#
def editor_name
File.basename(Pry.config.editor).split(" ").first
end
# Remove any common leading whitespace from every line in `text`.
#
# This can be used to make a HEREDOC line up with the left margin, without
# sacrificing the indentation level of the source code.
#
# e.g.
# opt.banner unindent <<-USAGE
# Lorem ipsum dolor sit amet, consectetur adipisicing elit,
# sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
# "Ut enim ad minim veniam."
# USAGE
#
# Heavily based on textwrap.dedent from Python, which is:
# Copyright (C) 1999-2001 Gregory P. Ward.
# Copyright (C) 2002, 2003 Python Software Foundation.
# Written by Greg Ward <gward@python.net>
#
# Licensed under <http://docs.python.org/license.html>
# From <http://hg.python.org/cpython/file/6b9f0a6efaeb/Lib/textwrap.py>
#
# @param [String] text The text from which to remove indentation
# @return [String] The text with indentation stripped.
def unindent(text)
# Empty blank lines
text = text.sub(/^[ \t]+$/, '')
# Find the longest common whitespace to all indented lines
margin = text.scan(/^[ \t]*(?=[^ \t\n])/).inject do |current_margin, next_indent|
if next_indent.start_with?(current_margin)
current_margin
elsif current_margin.start_with?(next_indent)
next_indent
else
""
end
end
text.gsub(/^#{margin}/, '')
end
# Restrict a string to the given range of lines (1-indexed)
# @param [String] content The string.
# @param [Range, Fixnum] lines The line(s) to restrict it to.
# @return [String] The resulting string.
def restrict_to_lines(content, lines)
line_range = one_index_range_or_number(lines)
Array(content.lines.to_a[line_range]).join
end
def one_index_number(line_number)
if line_number > 0
line_number - 1
else
line_number
end
end
# convert a 1-index range to a 0-indexed one
def one_index_range(range)
Range.new(one_index_number(range.begin), one_index_number(range.end))
end
def one_index_range_or_number(range_or_number)
case range_or_number
when Range
one_index_range(range_or_number)
else
one_index_number(range_or_number)
end
end
def absolute_index_number(line_number, array_length)
if line_number >= 0
line_number
else
[array_length + line_number, 0].max
end
end
def absolute_index_range(range_or_number, array_length)
case range_or_number
when Range
a = absolute_index_number(range_or_number.begin, array_length)
b = absolute_index_number(range_or_number.end, array_length)
else
a = b = absolute_index_number(range_or_number, array_length)
end
Range.new(a, b)
end
end
end
end
|