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synced 2022-11-09 12:17:21 -05:00
242bad9a87
This fixes an error when output is redirected:
```
$ run_ruby -rreline -e '$stderr.puts Reline::Unicode.calculate_width("\u221a").inspect' </dev/null >/dev/null
/home/jeremy/tmp/ruby/lib/reline/ansi.rb:189:in `raw': Operation not supported by device (Errno::ENODEV)
```
The @@encoding -> defined?(@@encoding) changes is necessary because
without that part of the commit, the following error would be raised
by the above command:
```
/home/jeremy/tmp/reline/lib/reline/general_io.rb:10:in `encoding': uninitialized class variable @@encoding in Reline::GeneralIO (NameError)
```
Problem reported and initial patch for Windows provided by
Richard Sharman.
I tested this only on OpenBSD, but hopefully it works for other
operating systems.
Fixes [Bug #17493]
https://github.com/ruby/reline/commit/c001971bb3
101 lines
1.4 KiB
Ruby
101 lines
1.4 KiB
Ruby
require 'timeout'
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class Reline::GeneralIO
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def self.reset(encoding: nil)
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@@pasting = false
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@@encoding = encoding
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end
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def self.encoding
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if defined?(@@encoding)
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@@encoding
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elsif RUBY_PLATFORM =~ /mswin|mingw/
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Encoding::UTF_8
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else
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Encoding::default_external
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end
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end
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def self.win?
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false
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end
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def self.set_default_key_bindings(_)
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end
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@@buf = []
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def self.input=(val)
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@@input = val
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end
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def self.getc
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unless @@buf.empty?
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return @@buf.shift
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end
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c = nil
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loop do
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result = select([@@input], [], [], 0.1)
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next if result.nil?
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c = @@input.read(1)
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break
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end
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c&.ord
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end
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def self.ungetc(c)
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@@buf.unshift(c)
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end
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def self.get_screen_size
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[1, 1]
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end
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def self.cursor_pos
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Reline::CursorPos.new(1, 1)
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end
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def self.move_cursor_column(val)
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end
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def self.move_cursor_up(val)
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end
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def self.move_cursor_down(val)
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end
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def self.erase_after_cursor
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end
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def self.scroll_down(val)
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end
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def self.clear_screen
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end
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def self.set_screen_size(rows, columns)
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end
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def self.set_winch_handler(&handler)
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end
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@@pasting = false
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def self.in_pasting?
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@@pasting
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end
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def self.start_pasting
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@@pasting = true
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end
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def self.finish_pasting
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@@pasting = false
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end
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def self.prep
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end
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def self.deprep(otio)
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end
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end
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