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#!/usr/bin/env ruby
# encoding: utf-8
#
# ____ ____
# / __/___ / __/
# / /_/_ / / /_
# / __/ / /_/ __/
# /_/ /___/_/ Fuzzy finder for your shell
#
# Version: 0.7.1 (January 31, 2014)
#
# Author: Junegunn Choi
# URL: https://github.com/junegunn/fzf
# License: MIT
#
# Copyright (c) 2013 Junegunn Choi
#
# MIT License
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
require 'thread'
require 'curses'
require 'set'
unless String.method_defined? :force_encoding
class String
def force_encoding *arg
self
end
end
end
class FZF
C = Curses
attr_reader :rxflag, :sort, :color, :mouse, :multi, :query, :extended
class AtomicVar
def initialize value
@value = value
@mutex = Mutex.new
end
def get
@mutex.synchronize { @value }
end
def set value = nil
if block_given?
@mutex.synchronize { @value = yield @value }
else
@mutex.synchronize { @value = value }
end
end
def method_missing sym, *args, &blk
@mutex.synchronize { @value.send(sym, *args, &blk) }
end
end
def initialize argv, source = $stdin
@rxflag = nil
@sort = ENV.fetch('FZF_DEFAULT_SORT', 1000).to_i
@color = true
@multi = false
@extended = false
@mouse = true
argv =
if opts = ENV['FZF_DEFAULT_OPTS']
require 'shellwords'
Shellwords.shellwords(opts) + argv
else
argv.dup
end
while o = argv.shift
case o
when '--version' then version
when '-h', '--help' then usage 0
when '-m', '--multi' then @multi = true
when '+m', '--no-multi' then @multi = false
when '-x', '--extended' then @extended = true
when '+x', '--no-extended' then @extended = false
when '-i' then @rxflag = Regexp::IGNORECASE
when '+i' then @rxflag = 0
when '-c', '--color' then @color = true
when '+c', '--no-color' then @color = false
when '--no-mouse' then @mouse = false
when '+s', '--no-sort' then @sort = nil
when '-q', '--query'
usage 1, 'query string required' unless query = argv.shift
@query = AtomicVar.new query.dup
when /^-q(.*)$/, /^--query=(.*)$/
@query = AtomicVar.new($1)
when '-s', '--sort'
usage 1, 'sort size required' unless sort = argv.shift
usage 1, 'invalid sort size' unless sort =~ /^[0-9]+$/
@sort = sort.to_i
when /^-s([0-9]+)$/, /^--sort=([0-9]+)$/
@sort = $1.to_i
else
usage 1, "illegal option: #{o}"
end
end
@source = source.clone
@mtx = Mutex.new
@cv = ConditionVariable.new
@events = {}
@new = []
@queue = Queue.new
@query ||= AtomicVar.new('')
@cursor_x = AtomicVar.new(@query.length)
@matches = AtomicVar.new([])
@count = AtomicVar.new(0)
@vcursor = AtomicVar.new(0)
@vcursors = AtomicVar.new(Set.new)
@spinner = AtomicVar.new('-\|/-\|/'.split(//))
@selects = AtomicVar.new({}) # ordered >= 1.9
@main = Thread.current
@stdout = $stdout.clone
@plcount = 0
end
def start
$stdout.reopen($stderr)
render { init_screen }
start_reader
start_renderer
start_search
start_loop
end
def version
File.open(__FILE__, 'r') do |f|
f.each_line do |line|
if line =~ /Version: (.*)/
$stdout.puts "fzf " << $1
exit
end
end
end
end
def usage x, message = nil
$stderr.puts message if message
$stderr.puts %[usage: fzf [options]
Options
-m, --multi Enable multi-select
-x, --extended Extended-search mode
-q, --query=STR Initial query
-s, --sort=MAX Maximum number of matched items to sort (default: 1000)
+s, --no-sort Do not sort the result. Keep the sequence unchanged.
-i Case-insensitive match (default: smart-case match)
+i Case-sensitive match
+c, --no-color Disable colors
--no-mouse Disable mouse
Environment variables
FZF_DEFAULT_COMMAND Default command to use when input is tty
FZF_DEFAULT_OPTS Defaults options. (e.g. "-x -m --sort 10000")] + $/ + $/
exit x
end
case RUBY_PLATFORM
when /darwin/
module UConv
CHOSUNG = 0x1100
JUNGSUNG = 0x1161
JONGSUNG = 0x11A7
CHOSUNGS = 19
JUNGSUNGS = 21
JONGSUNGS = 28
JJCOUNT = JUNGSUNGS * JONGSUNGS
NFC_BEGIN = 0xAC00
NFC_END = NFC_BEGIN + CHOSUNGS * JUNGSUNGS * JONGSUNGS
def self.nfd str
str.split(//).map do |c|
cp = c.ord
if cp >= NFC_BEGIN && cp < NFC_END
chr = ''
idx = cp - NFC_BEGIN
cho = CHOSUNG + idx / JJCOUNT
jung = JUNGSUNG + (idx % JJCOUNT) / JONGSUNGS
jong = JONGSUNG + idx % JONGSUNGS
chr << cho << jung
chr << jong if jong != JONGSUNG
chr
else
c
end
end
end
def self.to_nfc arr
[NFC_BEGIN + arr[0] * JJCOUNT +
(arr[1] || 0) * JONGSUNGS +
(arr[2] || 0)].pack('U*')
end
if String.method_defined?(:each_char)
def self.split str
str.each_char.to_a
end
else
def self.split str
str.split('')
end
end
def self.nfc str, offsets = []
ret = ''
omap = []
pend = []
split(str).each_with_index do |c, idx|
cp =
begin
c.ord
rescue Exception
next
end
omap << ret.length
unless pend.empty?
if cp >= JUNGSUNG && cp < JUNGSUNG + JUNGSUNGS
pend << cp - JUNGSUNG
next
elsif cp >= JONGSUNG && cp < JONGSUNG + JONGSUNGS
pend << cp - JONGSUNG
next
else
omap[-1] = omap[-1] + 1
ret << to_nfc(pend)
pend.clear
end
end
if cp >= CHOSUNG && cp < CHOSUNG + CHOSUNGS
pend << cp - CHOSUNG
else
ret << c
end
end
ret << to_nfc(pend) unless pend.empty?
return [ret,
offsets.map { |pair|
b, e = pair
[omap[b] || 0, omap[e] || ((omap.last || 0) + 1)] }]
end
end
def convert_item item
UConv.nfc(*item)
end
class Matcher
def query_chars q
UConv.nfd(q)
end
def sanitize q
UConv.nfd(q).join
end
end
else
def convert_item item
item
end
class Matcher
def query_chars q
q.split(//)
end
def sanitize q
q
end
end
end
def emit event
@mtx.synchronize do
@events[event] = yield
@cv.broadcast
end
end
def max_items; C.lines - 2; end
def cursor_y; C.lines - 1; end
def cprint str, col
C.attron(col) do
addstr_safe str
end if str
end
def addstr_safe str
C.addstr str.gsub("\0", '')
end
def print_input
C.setpos cursor_y, 0
C.clrtoeol
cprint '> ', color(:prompt, true)
C.attron(C::A_BOLD) do
C.addstr @query.get
end
end
def print_info msg = nil
C.setpos cursor_y - 1, 0
C.clrtoeol
prefix =
if spinner = @spinner.first
cprint spinner, color(:spinner, true)
' '
else
' '
end
C.attron color(:info, false) do
C.addstr "#{prefix}#{@matches.length}/#{@count.get}"
if (selected = @selects.length) > 0
C.addstr " (#{selected})"
end
C.addstr msg if msg
end
end
def refresh
C.setpos cursor_y, 2 + width(@query[0, @cursor_x.get])
C.refresh
end
def ctrl char
char.to_s.ord - 'a'.ord + 1
end
def format line, limit, offsets
offsets ||= []
maxe = offsets.map { |e| e.last }.max || 0
# Overflow
if width(line) > limit
ewidth = width(line[0...maxe])
# Stri..
if ewidth <= limit - 2
line, _ = trim line, limit - 2, false
line << '..'
# ..ring
else
# ..ri..
line = line[0...maxe] + '..' if ewidth < width(line) - 2
line, diff = trim line, limit - 2, true
offsets = offsets.map { |pair|
b, e = pair
b += 2 - diff
e += 2 - diff
b = [2, b].max
[b, e]
}
line = '..' + line
end
end
tokens = []
index = 0
offsets.select { |pair| pair.first < pair.last }.
sort_by { |pair| pair }.each do |pair|
b, e = pair.map { |x| [index, x].max }
tokens << [line[index...b], false]
tokens << [line[b...e], true]
index = e
end
tokens << [line[index..-1], false] if index < line.length
tokens.reject { |pair| pair.first.empty? }
end
def print_item row, tokens, chosen, selected
# Cursor
C.setpos row, 0
C.clrtoeol
cprint chosen ? '>' : ' ', color(:cursor, true)
cprint selected ? '>' : ' ',
chosen ? color(:chosen) : (selected ? color(:selected, true) : 0)
# Highlighted item
C.attron color(:chosen, true) if chosen
tokens.each do |pair|
token, highlighted = pair
if highlighted
cprint token, color(chosen ? :match! : :match, chosen)
C.attron color(:chosen, true) if chosen
else
addstr_safe token
end
end
C.attroff color(:chosen, true) if chosen
end
def sort_by_rank list
list.sort_by { |tuple|
line, offsets = tuple
matchlen = 0
pe = nil
offsets.sort.each do |pair|
b, e = pair
b = pe if pe && pe > b
pe = e
matchlen += e - b
end
[matchlen, line.length, line]
}
end
if RUBY_VERSION.split('.').map { |e| e.rjust(3, '0') }.join > '001009'
@@wrx = Regexp.new '\p{Han}|\p{Katakana}|\p{Hiragana}|\p{Hangul}'
def width str
str.gsub(@@wrx, ' ').length rescue str.length
end
def trim str, len, left
width = width str
diff = 0
while width > len
width -= (left ? str[0, 1] : str[-1, 1]) =~ @@wrx ? 2 : 1
str = left ? str[1..-1] : str[0...-1]
diff += 1
end
[str, diff]
end
else
def width str
str.length
end
def trim str, len, left
diff = str.length - len
if diff > 0
[left ? str[diff..-1] : str[0...-diff], diff]
else
[str, 0]
end
end
class ::String
def ord
self.unpack('c').first
end
end
class ::Fixnum
def ord
self
end
end
end
def init_screen
C.init_screen
if @mouse
C.mouseinterval 0
C.mousemask C::ALL_MOUSE_EVENTS
end
C.stdscr.keypad(true)
C.start_color
dbg =
if C.respond_to?(:use_default_colors)
C.use_default_colors
-1
else
C::COLOR_BLACK
end
C.raw
C.nonl
C.noecho
if @color
if C.can_change_color? && ENV['TERM'].to_s =~ /256/
C.init_pair 1, 110, dbg
C.init_pair 2, 108, dbg
C.init_pair 3, 254, 236
C.init_pair 4, 151, 236
C.init_pair 5, 148, dbg
C.init_pair 6, 144, dbg
C.init_pair 7, 161, 236
C.init_pair 8, 168, 236
else
C.init_pair 1, C::COLOR_BLUE, dbg
C.init_pair 2, C::COLOR_GREEN, dbg
C.init_pair 3, C::COLOR_YELLOW, C::COLOR_BLACK
C.init_pair 4, C::COLOR_GREEN, C::COLOR_BLACK
C.init_pair 5, C::COLOR_GREEN, dbg
C.init_pair 6, C::COLOR_WHITE, dbg
C.init_pair 7, C::COLOR_RED, C::COLOR_BLACK
C.init_pair 8, C::COLOR_MAGENTA, C::COLOR_BLACK
end
def self.color sym, bold = false
C.color_pair([:prompt, :match, :chosen, :match!,
:spinner, :info, :cursor, :selected].index(sym) + 1) |
(bold ? C::A_BOLD : 0)
end
else
def self.color sym, bold = false
case sym
when :chosen
bold ? C::A_REVERSE : 0
when :match
C::A_UNDERLINE
when :match!
C::A_REVERSE | C::A_UNDERLINE
else
0
end | (bold ? C::A_BOLD : 0)
end
end
end
def start_reader
stream =
if @source.tty?
if default_command = ENV['FZF_DEFAULT_COMMAND']
IO.popen(default_command)
elsif !`which find`.empty?
IO.popen("find * -path '*/\\.*' -prune -o -type f -print -o -type l -print 2> /dev/null")
else
exit 1
end
else
$stdin.reopen IO.open(IO.sysopen('/dev/tty'), 'r')
@source
end
Thread.new do
while line = stream.gets
emit(:new) { @new << line.chomp }
end
emit(:loaded) { true }
@spinner.clear
end
end
def start_search
matcher = (@extended ? ExtendedFuzzyMatcher : FuzzyMatcher).new @rxflag
searcher = Thread.new {
lists = []
events = {}
fcache = {}
q = ''
delay = -5
begin
while true
@mtx.synchronize do
while true
events.merge! @events
if @events.empty? # No new events
@cv.wait @mtx
next
end
@events.clear
break
end
if events[:new]
lists << @new
@count.set { |c| c + @new.length }
@spinner.set { |spinner|
if e = spinner.shift
spinner.push e
end; spinner
}
@new = []
fcache.clear
end
end#mtx
new_search = events[:key] || events.delete(:new)
user_input = events[:key]
progress = 0
started_at = Time.now
if new_search && !lists.empty?
q, cx = events.delete(:key) || [q, 0]
empty = matcher.empty?(q)
unless matches = fcache[q]
found = []
skip = false
cnt = 0
lists.each do |list|
cnt += list.length
skip = @mtx.synchronize { @events[:key] }
break if skip
if !empty && (progress = 100 * cnt / @count.get) < 100 && Time.now - started_at > 0.5
render { print_info " (#{progress}%)" }
end
found.concat(q.empty? ? list :
matcher.match(list, q, q[0, cx], q[cx..-1]))
end
next if skip
matches = fcache[q] = @sort ? found : found.reverse
end
if !empty && @sort && matches.length <= @sort
matches = sort_by_rank(matches)
end
# Atomic update
@matches.set matches
end#new_search
# This small delay reduces the number of partial lists
sleep((delay = [20, delay + 5].min) * 0.01) unless user_input
update_list new_search
end#while
rescue Exception => e
@main.raise e
end
}
end
def pick
items = @matches[0, max_items]
curr = [0, [@vcursor.get, items.length - 1].min].max
[*items.fetch(curr, [])][0]
end
def update_list wipe
render do
items = @matches[0, max_items]
# Wipe
if items.length < @plcount
@plcount.downto(items.length) do |idx|
C.setpos cursor_y - idx - 2, 0
C.clrtoeol
end
end
@plcount = items.length
maxc = C.cols - 3
vcursor = @vcursor.set { |v| [0, [v, items.length - 1].min].max }
cleanse = Set[vcursor]
@vcursors.set { |vs|
cleanse.merge vs
Set.new
}
items.each_with_index do |item, idx|
next unless wipe || cleanse.include?(idx)
row = cursor_y - idx - 2
chosen = idx == vcursor
selected = @selects.include?([*item][0])
line, offsets = convert_item item
tokens = format line, maxc, offsets
print_item row, tokens, chosen, selected
end
print_info
print_input
end
end
def start_renderer
Thread.new do
begin
refresh
while blk = @queue.shift
blk.call
refresh
end
rescue Exception => e
@main.raise e
end
end
end
def render &blk
@queue.push blk
nil
end
def vselect &prc
@vcursor.set { |v| @vcursors << v; prc.call v }
update_list false
end
def num_unicode_bytes chr
# http://en.wikipedia.org/wiki/UTF-8
if chr & 0b10000000 > 0
bytes = 0
7.downto(2) do |shift|
break if (chr >> shift) & 0x1 == 0
bytes += 1
end
bytes
else
1
end
end
def test_mouse st, *states
states.any? { |s| s & st > 0 }
end
def start_loop
got = nil
begin
input = @query.get.dup
cursor = input.length
backword = proc {
cursor = (input[0, cursor].rindex(/\s\S/) || -1) + 1
}
actions = {
:esc => proc { exit 1 },
ctrl(:d) => proc { exit 1 if input.empty? },
ctrl(:m) => proc {
got = pick
exit 0
},
ctrl(:u) => proc { input = input[cursor..-1]; cursor = 0 },
ctrl(:a) => proc { cursor = 0; nil },
ctrl(:e) => proc { cursor = input.length; nil },
ctrl(:j) => proc { vselect { |v| v - 1 } },
ctrl(:k) => proc { vselect { |v| v + 1 } },
ctrl(:w) => proc {
pcursor = cursor
backword.call
input = input[0...cursor] + input[pcursor..-1]
},
ctrl(:h) => proc { input[cursor -= 1] = '' if cursor > 0 },
ctrl(:i) => proc { |o|
if @multi && sel = pick
if @selects.has_key? sel
@selects.delete sel
else
@selects[sel] = 1
end
vselect { |v|
v + case o
when :select then 0
when C::KEY_BTAB then 1
else -1
end
}
end
},
ctrl(:b) => proc { cursor = [0, cursor - 1].max; nil },
ctrl(:f) => proc { cursor = [input.length, cursor + 1].min; nil },
:alt_b => proc { backword.call; nil },
:alt_f => proc {
cursor += (input[cursor..-1].index(/(\S\s)|(.$)/) || -1) + 1
nil
},
}
actions[C::KEY_UP] = actions[ctrl(:p)] = actions[ctrl(:k)]
actions[C::KEY_DOWN] = actions[ctrl(:n)] = actions[ctrl(:j)]
actions[C::KEY_LEFT] = actions[ctrl(:b)]
actions[C::KEY_RIGHT] = actions[ctrl(:f)]
actions[C::KEY_BTAB] = actions[:select] = actions[ctrl(:i)]
actions[C::KEY_BACKSPACE] = actions[127] = actions[ctrl(:h)]
actions[ctrl(:q)] = actions[ctrl(:g)] = actions[ctrl(:c)] = actions[:esc]
emit(:key) { [@query.get, cursor] } unless @query.empty?
pmv = nil
while true
@cursor_x.set cursor
render { print_input }
C.stdscr.timeout = -1
ch = C.getch
case ch
when C::KEY_MOUSE
if m = C.getmouse
st = m.bstate
if test_mouse(st, C::BUTTON1_PRESSED, C::BUTTON1_RELEASED)
if m.y == cursor_y
# TODO Wide-characters
cursor = [0, [input.length, m.x - 2].min].max
elsif m.x > 1 && m.y <= max_items
vselect { |v|
tv = max_items - m.y - 1
if test_mouse(st, C::BUTTON1_RELEASED)
if test_mouse(st, C::BUTTON_SHIFT)
ch = :select
elsif pmv == tv
ch = ctrl(:m)
end
pmv = tv
end
tv
}
end
elsif test_mouse(st, 0x8000000, C::BUTTON2_PRESSED)
ch = C::KEY_DOWN
elsif test_mouse(st, C::BUTTON4_PRESSED)
ch = C::KEY_UP
end
end
when 27
C.stdscr.timeout = 0
ch =
case ch2 = C.getch
when 'b' then :alt_b
when 'f' then :alt_f
when nil then :esc
else
ch2
end
end
upd = actions.fetch(ch, proc { |ch|
if ch.is_a?(Fixnum)
# Ruby 1.8
if (ch.chr rescue '') =~ /[[:print:]]/
ch = ch.chr
elsif (nch = num_unicode_bytes(ch)) > 1
chs = [ch]
(nch - 1).times do |i|
chs << C.getch
end
# UTF-8 TODO Ruby 1.8
ch = chs.pack('C*').force_encoding('UTF-8')
end
end
if ch.is_a?(String) && ch =~ /[[:print:]]/
input.insert cursor, ch
cursor += 1
end
}).call(ch)
# Dispatch key event
emit(:key) { [@query.set(input.dup), cursor] } if upd
end
ensure
C.close_screen
if got
if @selects.empty?
@stdout.puts got
else
@selects.each do |sel, _|
@stdout.puts sel
end
end
end
end
end
class FuzzyMatcher < Matcher
attr_reader :caches, :rxflag
def initialize rxflag
@caches = Hash.new { |h, k| h[k] = {} }
@regexp = {}
@rxflag = rxflag
end
def empty? q
q.empty?
end
def rxflag_for q
@rxflag || (q =~ /[A-Z]/ ? 0 : Regexp::IGNORECASE)
end
def fuzzy_regex q
@regexp[q] ||= begin
q = q.downcase if @rxflag == Regexp::IGNORECASE
Regexp.new(query_chars(q).inject('') { |sum, e|
e = Regexp.escape e
sum << (e.length > 1 ? "(?:#{e}).*?" : # FIXME: not equivalent
"#{e}[^#{e}]*?")
}, rxflag_for(q))
end
end
def match list, q, prefix, suffix
regexp = fuzzy_regex q
cache = @caches[list.object_id]
prefix_cache = nil
(prefix.length - 1).downto(1) do |len|
break if prefix_cache = cache[prefix[0, len]]
end
suffix_cache = nil
0.upto(suffix.length - 1) do |idx|
break if suffix_cache = cache[suffix[idx..-1]]
end unless suffix.empty?
partial_cache = [prefix_cache,
suffix_cache].compact.sort_by { |e| e.length }.first
cache[q] ||= (partial_cache ?
partial_cache.map { |e| e.first } : list).map { |line|
# Ignore errors: e.g. invalid byte sequence in UTF-8
md = line.match(regexp) rescue nil
md && [line, [md.offset(0)]]
}.compact
end
end
class ExtendedFuzzyMatcher < FuzzyMatcher
def initialize rxflag
super
@regexps = {}
end
def empty? q
parse(q).empty?
end
def parse q
q = q.strip
@regexps[q] ||= q.split(/\s+/).map { |w|
invert =
if w =~ /^!/
w = w[1..-1]
true
end
[ @regexp[w] ||=
case w
when ''
nil
when /^\^(.*)\$$/
Regexp.new('^' << sanitize(Regexp.escape($1)) << '$', rxflag_for(w))
when /^'/
w.length > 1 ?
Regexp.new(sanitize(Regexp.escape(w[1..-1])), rxflag_for(w)) : nil
when /^\^/
w.length > 1 ?
Regexp.new('^' << sanitize(Regexp.escape(w[1..-1])), rxflag_for(w)) : nil
when /\$$/
w.length > 1 ?
Regexp.new(sanitize(Regexp.escape(w[0..-2])) << '$', rxflag_for(w)) : nil
else
fuzzy_regex w
end, invert ]
}.select { |pair| pair.first }
end
def match list, q, prefix, suffix
regexps = parse q
# Look for prefix cache
cache = @caches[list.object_id]
prefix = prefix.strip.sub(/\$\S*$/, '').sub(/(^|\s)!\S*$/, '')
prefix_cache = nil
(prefix.length - 1).downto(1) do |len|
break if prefix_cache = cache[Set[@regexps[prefix[0, len]]]]
end
cache[Set[regexps]] ||= (prefix_cache ?
prefix_cache.map { |e| e.first } :
list).map { |line|
offsets = []
regexps.all? { |pair|
regexp, invert = pair
md = line.match(regexp) rescue nil
if md && !invert
offsets << md.offset(0)
elsif !md && invert
true
end
} && [line, offsets]
}.select { |e| e }
end
end
end#FZF
FZF.new(ARGV, $stdin).start if ENV.fetch('FZF_EXECUTABLE', '1') == '1'
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