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Support OSC and treat \1 \2 correctly

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This commit is contained in:
aycabta 2019-05-28 00:15:38 +09:00
parent 70166b3ca3
commit 9a68aba79f
1 changed files with 53 additions and 12 deletions
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65
lib/reline/line_editor.rb
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@ -82,7 +82,9 @@ class Reline::LineEditor
MenuInfo = Struct.new('MenuInfo', :target, :list)
CSI_REGEXP = /\e\[[\d;]*[ABCDEFGHJKSTfminsuhl]/
NON_PRINTING_ESCAPES = "\1\2"
OSC_REGEXP = /\e\]\d+(?:;[^;]+)*\a/
NON_PRINTING_START = "\1"
NON_PRINTING_END = "\2"
def initialize(config)
@config = config
@ -180,19 +182,31 @@ class Reline::LineEditor
lines = [String.new(encoding: @encoding)]
height = 1
width = 0
prompt = prompt.tr(NON_PRINTING_ESCAPES, '')
str = str.tr(NON_PRINTING_ESCAPES, '')
rest = "#{prompt}#{str}".encode(Encoding::UTF_8)
in_zero_width = false
loop do
break if rest.empty?
if rest =~ /\A#{CSI_REGEXP}/
if rest.start_with?(NON_PRINTING_START)
rest.delete_prefix!(NON_PRINTING_START)
in_zero_width = true
elsif rest.start_with?(NON_PRINTING_END)
rest.delete_prefix!(NON_PRINTING_END)
in_zero_width = false
elsif rest.start_with?(CSI_REGEXP)
lines.last << $&
rest = $'
elsif rest.start_with?(OSC_REGEXP)
lines.last << $&
rest = $'
else
gcs = rest.grapheme_clusters
gc = gcs.first
rest = gcs[1..-1].join
mbchar_width = Reline::Unicode.get_mbchar_width(gc)
if in_zero_width
mbchar_width = 0
else
mbchar_width = Reline::Unicode.get_mbchar_width(gc)
end
width += mbchar_width
if width > max_width
width = mbchar_width
@ -825,14 +839,41 @@ class Reline::LineEditor
new_str
end
private def calculate_width(str, allow_csi = false)
if allow_csi
str = str.gsub(CSI_REGEXP, '')
str = str.tr(NON_PRINTING_ESCAPES, '')
private def calculate_width(str, allow_escape_code = false)
if allow_escape_code
width = 0
rest = str.encode(Encoding::UTF_8)
in_zero_width = false
loop do
break if rest.empty?
if rest.start_with?(NON_PRINTING_START)
rest.delete_prefix!(NON_PRINTING_START)
in_zero_width = true
elsif rest.start_with?(NON_PRINTING_END)
rest.delete_prefix!(NON_PRINTING_END)
in_zero_width = false
elsif rest.start_with?(CSI_REGEXP)
rest = $'
elsif rest.start_with?(OSC_REGEXP)
rest = $'
else
gcs = rest.grapheme_clusters
gc = gcs.first
rest = gcs[1..-1].join
if in_zero_width
mbchar_width = 0
else
mbchar_width = Reline::Unicode.get_mbchar_width(gc)
end
width += mbchar_width
end
end
width
else
str.encode(Encoding::UTF_8).grapheme_clusters.inject(0) { |width, gc|
width + Reline::Unicode.get_mbchar_width(gc)
}
end
str.encode(Encoding::UTF_8).grapheme_clusters.inject(0) { |width, gc|
width + Reline::Unicode.get_mbchar_width(gc)
}
end
private def key_delete(key)