blob: 80c531b6944a8e76ddd9bf845f69980ad28cfc7a (
plain) (
blame)
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
|
require 'rbconfig'
require 'tempfile'
module Kernel
# Sets $VERBOSE to nil for the duration of the block and back to its original
# value afterwards.
#
# silence_warnings do
# value = noisy_call # no warning voiced
# end
#
# noisy_call # warning voiced
def silence_warnings
with_warnings(nil) { yield }
end
# Sets $VERBOSE to +true+ for the duration of the block and back to its
# original value afterwards.
def enable_warnings
with_warnings(true) { yield }
end
# Sets $VERBOSE for the duration of the block and back to its original
# value afterwards.
def with_warnings(flag)
old_verbose, $VERBOSE = $VERBOSE, flag
yield
ensure
$VERBOSE = old_verbose
end
# For compatibility
def silence_stderr #:nodoc:
ActiveSupport::Deprecation.warn(
"#silence_stderr is deprecated and will be removed in the next release"
) #not thread-safe
silence_stream(STDERR) { yield }
end
# Deprecated : this method is not thread safe
# Silences any stream for the duration of the block.
#
# silence_stream(STDOUT) do
# puts 'This will never be seen'
# end
#
# puts 'But this will'
#
# This method is not thread-safe.
def silence_stream(stream)
old_stream = stream.dup
stream.reopen(RbConfig::CONFIG['host_os'] =~ /mswin|mingw/ ? 'NUL:' : '/dev/null')
stream.sync = true
yield
ensure
stream.reopen(old_stream)
old_stream.close
end
# Blocks and ignores any exception passed as argument if raised within the block.
#
# suppress(ZeroDivisionError) do
# 1/0
# puts 'This code is NOT reached'
# end
#
# puts 'This code gets executed and nothing related to ZeroDivisionError was seen'
def suppress(*exception_classes)
yield
rescue *exception_classes
end
# Captures the given stream and returns it:
#
# stream = capture(:stdout) { puts 'notice' }
# stream # => "notice\n"
#
# stream = capture(:stderr) { warn 'error' }
# stream # => "error\n"
#
# even for subprocesses:
#
# stream = capture(:stdout) { system('echo notice') }
# stream # => "notice\n"
#
# stream = capture(:stderr) { system('echo error 1>&2') }
# stream # => "error\n"
def capture(stream)
ActiveSupport::Deprecation.warn(
"#capture(stream) is deprecated and will be removed in the next release"
) #not thread-safe
stream = stream.to_s
captured_stream = Tempfile.new(stream)
stream_io = eval("$#{stream}")
origin_stream = stream_io.dup
stream_io.reopen(captured_stream)
yield
stream_io.rewind
return captured_stream.read
ensure
captured_stream.close
captured_stream.unlink
stream_io.reopen(origin_stream)
end
alias :silence :capture
# Silences both STDOUT and STDERR, even for subprocesses.
#
# quietly { system 'bundle install' }
#
# This method is not thread-safe.
def quietly
ActiveSupport::Deprecation.warn(
"#quietly is deprecated and will be removed in the next release"
) #not thread-safe
silence_stream(STDOUT) do
silence_stream(STDERR) do
yield
end
end
end
end
|
