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Merge pull request #104 from junegunn/add-with-nth

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Add --with-nth option
This commit is contained in:
Junegunn Choi 2014-11-04 23:30:11 +09:00
commit 80819f3c44
5 changed files with 250 additions and 97 deletions
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9
.travis.yml Normal file
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@ -0,0 +1,9 @@
language: ruby
rvm:
- "1.8.7"
- "1.9.3"
- "2.0.0"
- "2.1.1"
install: gem install curses minitest

49
README.md
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@ -65,38 +65,39 @@ Usage
usage: fzf [options]
Search
-x, --extended Extended-search mode
-e, --extended-exact Extended-search mode (exact match)
-i Case-insensitive match (default: smart-case match)
+i Case-sensitive match
-n, --nth=N[,..] Comma-separated list of field index expressions
for limiting search scope. Each can be a non-zero
integer or a range expression ([BEGIN]..[END])
-d, --delimiter=STR Field delimiter regex for --nth (default: AWK-style)
-x, --extended Extended-search mode
-e, --extended-exact Extended-search mode (exact match)
-i Case-insensitive match (default: smart-case match)
+i Case-sensitive match
-n, --nth=N[,..] Comma-separated list of field index expressions
for limiting search scope. Each can be a non-zero
integer or a range expression ([BEGIN]..[END])
--with-nth=N[,..] Transform the item using index expressions for search
-d, --delimiter=STR Field delimiter regex for --nth (default: AWK-style)
Search result
-s, --sort=MAX Maximum number of matched items to sort (default: 1000)
+s, --no-sort Do not sort the result. Keep the sequence unchanged.
-s, --sort=MAX Maximum number of matched items to sort (default: 1000)
+s, --no-sort Do not sort the result. Keep the sequence unchanged.
Interface
-m, --multi Enable multi-select with tab/shift-tab
--no-mouse Disable mouse
+c, --no-color Disable colors
+2, --no-256 Disable 256-color
--black Use black background
--reverse Reverse orientation
--prompt=STR Input prompt (default: '> ')
-m, --multi Enable multi-select with tab/shift-tab
--no-mouse Disable mouse
+c, --no-color Disable colors
+2, --no-256 Disable 256-color
--black Use black background
--reverse Reverse orientation
--prompt=STR Input prompt (default: '> ')
Scripting
-q, --query=STR Start the finder with the given query
-1, --select-1 Automatically select the only match
-0, --exit-0 Exit immediately when there's no match
-f, --filter=STR Filter mode. Do not start interactive finder.
--print-query Print query as the first line
-q, --query=STR Start the finder with the given query
-1, --select-1 Automatically select the only match
-0, --exit-0 Exit immediately when there's no match
-f, --filter=STR Filter mode. Do not start interactive finder.
--print-query Print query as the first line
Environment variables
FZF_DEFAULT_COMMAND Default command to use when input is tty
FZF_DEFAULT_OPTS Defaults options. (e.g. "-x -m --sort 10000")
FZF_DEFAULT_COMMAND Default command to use when input is tty
FZF_DEFAULT_OPTS Defaults options. (e.g. "-x -m --sort 10000")
```
fzf will launch curses-based finder, read the list from STDIN, and write the

1
Rakefile
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@ -6,3 +6,4 @@ Rake::TestTask.new(:test) do |test|
test.verbose = true
end
task :default => :test

144
fzf
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@ -7,7 +7,7 @@
# / __/ / /_/ __/
# /_/ /___/_/ Fuzzy finder for your shell
#
# Version: 0.8.7 (Aug 17, 2014)
# Version: 0.8.8 (Nov 4, 2014)
#
# Author: Junegunn Choi
# URL: https://github.com/junegunn/fzf
@ -53,11 +53,34 @@ unless String.method_defined? :force_encoding
end
end
class String
attr_accessor :orig
def tokenize delim, nth
unless delim
# AWK default
prefix_length = (index(/\S/) || 0) rescue 0
tokens = scan(/\S+\s*/) rescue []
else
prefix_length = 0
tokens = scan(delim) rescue []
end
nth.map { |n|
if n.begin == 0 && n.end == -1
[prefix_length, tokens.join]
elsif part = tokens[n]
[prefix_length + (tokens[0...(n.begin)] || []).join.length,
part.join]
end
}.compact
end
end
class FZF
C = Curses
attr_reader :rxflag, :sort, :nth, :color, :black, :ansi256, :reverse, :prompt,
:mouse, :multi, :query, :select1, :exit0, :filter, :extended,
:print_query
:print_query, :with_nth
def sync
@shr_mtx.synchronize { yield }
@ -95,6 +118,7 @@ class FZF
@exit0 = false
@filter = nil
@nth = nil
@with_nth = nil
@delim = nil
@reverse = false
@prompt = '> '
@ -148,6 +172,11 @@ class FZF
@nth = parse_nth nth
when /^-n([0-9,-\.]+)$/, /^--nth=([0-9,-\.]+)$/
@nth = parse_nth $1
when '--with-nth'
usage 1, 'field expression required' unless nth = argv.shift
@with_nth = parse_nth nth
when /^--with-nth=([0-9,-\.]+)$/
@with_nth = parse_nth $1
when '-d', '--delimiter'
usage 1, 'delimiter required' unless delim = argv.shift
@delim = FZF.build_delim_regex delim
@ -181,6 +210,7 @@ class FZF
@queue = Queue.new
@pending = nil
@rev_dir = @reverse ? -1 : 1
@stdout = $stdout.clone
unless @filter
# Shared variables: needs protection
@ -200,7 +230,7 @@ class FZF
end
def parse_nth nth
nth.split(',').map { |expr|
ranges = nth.split(',').map { |expr|
x = proc { usage 1, "invalid field expression: #{expr}" }
first, second = expr.split('..', 2)
x.call if !first.empty? && first.to_i == 0 ||
@ -215,6 +245,7 @@ class FZF
Range.new(*[first, second].map { |e| e > 0 ? e - 1 : e })
}
ranges == [0..-1] ? nil : ranges
end
def FZF.build_delim_regex delim
@ -222,6 +253,10 @@ class FZF
Regexp.compile "(?:.*?#{delim})|(?:.+?$)"
end
def burp string, orig = nil
@stdout.puts(orig || string.orig || string)
end
def start
if @filter
start_reader.join
@ -236,7 +271,7 @@ class FZF
if loaded
if @select1 && len == 1
puts @query if @print_query
puts empty ? matches.first : matches.first.first
burp(empty ? matches.first : matches.first.first)
exit 0
elsif @exit0 && len == 0
puts @query if @print_query
@ -312,39 +347,40 @@ class FZF
$stderr.puts %[usage: fzf [options]
Search
-x, --extended Extended-search mode
-e, --extended-exact Extended-search mode (exact match)
-i Case-insensitive match (default: smart-case match)
+i Case-sensitive match
-n, --nth=N[,..] Comma-separated list of field index expressions
for limiting search scope. Each can be a non-zero
integer or a range expression ([BEGIN]..[END])
-d, --delimiter=STR Field delimiter regex for --nth (default: AWK-style)
-x, --extended Extended-search mode
-e, --extended-exact Extended-search mode (exact match)
-i Case-insensitive match (default: smart-case match)
+i Case-sensitive match
-n, --nth=N[,..] Comma-separated list of field index expressions
for limiting search scope. Each can be a non-zero
integer or a range expression ([BEGIN]..[END])
--with-nth=N[,..] Transform the item using index expressions for search
-d, --delimiter=STR Field delimiter regex for --nth (default: AWK-style)
Search result
-s, --sort=MAX Maximum number of matched items to sort (default: 1000)
+s, --no-sort Do not sort the result. Keep the sequence unchanged.
-s, --sort=MAX Maximum number of matched items to sort (default: 1000)
+s, --no-sort Do not sort the result. Keep the sequence unchanged.
Interface
-m, --multi Enable multi-select with tab/shift-tab
--no-mouse Disable mouse
+c, --no-color Disable colors
+2, --no-256 Disable 256-color
--black Use black background
--reverse Reverse orientation
--prompt=STR Input prompt (default: '> ')
-m, --multi Enable multi-select with tab/shift-tab
--no-mouse Disable mouse
+c, --no-color Disable colors
+2, --no-256 Disable 256-color
--black Use black background
--reverse Reverse orientation
--prompt=STR Input prompt (default: '> ')
Scripting
-q, --query=STR Start the finder with the given query
-1, --select-1 Automatically select the only match
-0, --exit-0 Exit immediately when there's no match
-f, --filter=STR Filter mode. Do not start interactive finder.
--print-query Print query as the first line
-q, --query=STR Start the finder with the given query
-1, --select-1 Automatically select the only match
-0, --exit-0 Exit immediately when there's no match
-f, --filter=STR Filter mode. Do not start interactive finder.
--print-query Print query as the first line
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
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
def emit event
@ -520,7 +556,6 @@ class FZF
end
def init_screen
@stdout = $stdout.clone
$stdout.reopen($stderr)
C.init_screen
@ -595,14 +630,28 @@ class FZF
end
Thread.new do
while line = stream.gets
emit(:new) { @new << line.chomp }
if @with_nth
while line = stream.gets
emit(:new) { @new << transform(line) }
end
else
while line = stream.gets
emit(:new) { @new << line.chomp }
end
end
emit(:loaded) { true }
@spinner.clear if @spinner
end
end
def transform line
line = line.chomp
mut = (line =~ / $/ ? line : line + ' ').
tokenize(@delim, @with_nth).map { |e| e.last }.join('').sub(/ *$/, '')
mut.orig = line
mut
end
def start_search &callback
Thread.new do
lists = []
@ -694,7 +743,8 @@ class FZF
def pick
sync do
[*@matches.fetch(@ycur, [])][0]
item = @matches[@ycur]
item.is_a?(Array) ? item[0] : item
end
end
@ -1000,7 +1050,7 @@ class FZF
if @selects.has_key? sel
@selects.delete sel
else
@selects[sel] = 1
@selects[sel] = sel.orig
end
end
vselect { |v| v + case o
@ -1080,10 +1130,10 @@ class FZF
@stdout.puts q if @print_query
if got
if selects.empty?
@stdout.puts got
burp got
else
selects.each do |sel, _|
@stdout.puts sel
selects.each do |sel, orig|
burp sel, orig
end
end
end
@ -1108,25 +1158,7 @@ class FZF
end
def tokenize str
@tokens_cache[str] ||=
begin
unless @delim
# AWK default
prefix_length = (str.index(/\S/) || 0) rescue 0
tokens = str.scan(/\S+\s*/) rescue []
else
prefix_length = 0
tokens = str.scan(@delim) rescue []
end
@nth.map { |n|
if n.begin == 0 && n.end == -1
[prefix_length, tokens.join]
elsif part = tokens[n]
[prefix_length + (tokens[0...(n.begin)] || []).join.length,
part.join]
end
}.compact
end
@tokens_cache[str] ||= str.tokenize(@delim, @nth)
end
def do_match str, pat

144
test/test_fzf.rb
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@ -1,6 +1,7 @@
#!/usr/bin/env ruby
# encoding: utf-8
require 'rubygems'
require 'curses'
require 'timeout'
require 'stringio'
@ -10,6 +11,48 @@ $LOAD_PATH.unshift File.expand_path('../..', __FILE__)
ENV['FZF_EXECUTABLE'] = '0'
load 'fzf'
class MockTTY
def initialize
@buffer = ''
@mutex = Mutex.new
@condv = ConditionVariable.new
end
def read_nonblock sz
@mutex.synchronize do
take sz
end
end
def take sz
if @buffer.length >= sz
ret = @buffer[0, sz]
@buffer = @buffer[sz..-1]
ret
end
end
def getc
sleep 0.1
while true
@mutex.synchronize do
if char = take(1)
return char
else
@condv.wait(@mutex)
end
end
end
end
def << str
@mutex.synchronize do
@buffer << str
@condv.broadcast
end
end
end
class TestFZF < MiniTest::Unit::TestCase
def setup
ENV.delete 'FZF_DEFAULT_SORT'
@ -25,6 +68,7 @@ class TestFZF < MiniTest::Unit::TestCase
assert_equal nil, fzf.rxflag
assert_equal true, fzf.mouse
assert_equal nil, fzf.nth
assert_equal nil, fzf.with_nth
assert_equal true, fzf.color
assert_equal false, fzf.black
assert_equal true, fzf.ansi256
@ -47,7 +91,7 @@ class TestFZF < MiniTest::Unit::TestCase
ENV['FZF_DEFAULT_OPTS'] =
'-x -m -s 10000 -q " hello world " +c +2 --select-1 -0 ' <<
'--no-mouse -f "goodbye world" --black --nth=3,-1,2 --reverse --print-query'
'--no-mouse -f "goodbye world" --black --with-nth=3,-3..,2 --nth=3,-1,2 --reverse --print-query'
fzf = FZF.new []
assert_equal 10000, fzf.sort
assert_equal ' hello world ',
@ -65,13 +109,14 @@ class TestFZF < MiniTest::Unit::TestCase
assert_equal true, fzf.reverse
assert_equal true, fzf.print_query
assert_equal [2..2, -1..-1, 1..1], fzf.nth
assert_equal [2..2, -3..-1, 1..1], fzf.with_nth
end
def test_option_parser
# Long opts
fzf = FZF.new %w[--sort=2000 --no-color --multi +i --query hello --select-1
--exit-0 --filter=howdy --extended-exact
--no-mouse --no-256 --nth=1 --reverse --prompt (hi)
--no-mouse --no-256 --nth=1 --with-nth=.. --reverse --prompt (hi)
--print-query]
assert_equal 2000, fzf.sort
assert_equal true, fzf.multi
@ -86,6 +131,7 @@ class TestFZF < MiniTest::Unit::TestCase
assert_equal 'howdy', fzf.filter
assert_equal :exact, fzf.extended
assert_equal [0..0], fzf.nth
assert_equal nil, fzf.with_nth
assert_equal true, fzf.reverse
assert_equal '(hi)', fzf.prompt
assert_equal true, fzf.print_query
@ -168,13 +214,12 @@ class TestFZF < MiniTest::Unit::TestCase
end
end
# FIXME Only on 1.9 or above
def test_width
fzf = FZF.new []
assert_equal 5, fzf.width('abcde')
assert_equal 4, fzf.width('한글')
assert_equal 5, fzf.width('한글.')
end
end if RUBY_VERSION >= '1.9'
def test_trim
fzf = FZF.new []
@ -187,7 +232,7 @@ class TestFZF < MiniTest::Unit::TestCase
assert_equal ['가나a', 6], fzf.trim('가나ab라마바사.', 5, false)
assert_equal ['가나ab', 5], fzf.trim('가나ab라마바사.', 6, false)
assert_equal ['가나ab', 5], fzf.trim('가나ab라마바사.', 7, false)
end
end if RUBY_VERSION >= '1.9'
def test_format
fzf = FZF.new []
@ -563,28 +608,41 @@ class TestFZF < MiniTest::Unit::TestCase
assert_equal [[list[0], [[8, 9]]]], matcher.match(list, '^s', '', '')
end
def stream_for str
def stream_for str, delay = 0
StringIO.new(str).tap do |sio|
sio.instance_eval do
alias org_gets gets
def gets
org_gets.tap { |e| sleep 0.5 unless e.nil? }
org_gets.tap { |e| sleep(@delay) unless e.nil? }
end
def reopen _
end
end
sio.instance_variable_set :@delay, delay
end
end
def assert_fzf_output opts, given, expected
stream = stream_for given
output = StringIO.new
output = stream_for ''
def sorted_lines line
line.split($/).sort
end
begin
tty = MockTTY.new
$stdout = output
FZF.new(opts, stream).start
fzf = FZF.new(opts, stream)
fzf.instance_variable_set :@tty, tty
thr = block_given? && Thread.new { yield tty }
fzf.start
thr && thr.join
rescue SystemExit => e
assert_equal 0, e.status
assert_equal expected, output.string.chomp
assert_equal sorted_lines(expected), sorted_lines(output.string)
ensure
$stdout = STDOUT
end
@ -613,15 +671,12 @@ class TestFZF < MiniTest::Unit::TestCase
end
def test_select_1_ambiguity
stream = stream_for "Hello\nWorld"
begin
Timeout::timeout(2) do
FZF.new(%w[--query=o --select-1], stream).start
Timeout::timeout(0.5) do
assert_fzf_output %w[--query=o --select-1], "hello\nworld", "should not match"
end
flunk 'Should not reach here'
rescue Exception => e
rescue Timeout::Error
Curses.close_screen
assert_instance_of Timeout::Error, e
end
end
@ -638,6 +693,32 @@ class TestFZF < MiniTest::Unit::TestCase
assert_fzf_output %w[--exit-0], '', ''
end
def test_with_nth
source = "hello world\nbatman"
assert_fzf_output %w[-0 -1 --with-nth=2,1 -x -q ^worl],
source, 'hello world'
assert_fzf_output %w[-0 -1 --with-nth=2,1 -x -q llo$],
source, 'hello world'
assert_fzf_output %w[-0 -1 --with-nth=.. -x -q llo$],
source, ''
assert_fzf_output %w[-0 -1 --with-nth=2,2,2,..,1 -x -q worlworlworlhellworlhell],
source, 'hello world'
assert_fzf_output %w[-0 -1 --with-nth=1,1,-1,1 -x -q batbatbatbat],
source, 'batman'
end
def test_with_nth_transform
fzf = FZF.new %w[--with-nth 2..,1]
assert_equal 'my world hello', fzf.transform('hello my world')
assert_equal 'my world hello', fzf.transform('hello my world')
assert_equal 'my world hello', fzf.transform('hello my world ')
fzf = FZF.new %w[--with-nth 2,-1,2]
assert_equal 'my world my', fzf.transform('hello my world')
assert_equal 'world world world', fzf.transform('hello world')
assert_equal 'world world world', fzf.transform('hello world ')
end
def test_ranking_overlap_match_regions
list = [
'1 3 4 2',
@ -688,13 +769,42 @@ class TestFZF < MiniTest::Unit::TestCase
tmp << 'hello ' << [0xff].pack('C*') << ' world' << $/ << [0xff].pack('C*')
tmp.close
begin
Timeout::timeout(1) do
Timeout::timeout(0.5) do
FZF.new(%w[-n..,1,2.. -q^ -x], File.open(tmp.path)).start
end
rescue Timeout::Error
Curses.close_screen
end
ensure
tmp.unlink
end
def test_with_nth_mock_tty
# Manual selection with input
assert_fzf_output ["--with-nth=2,1"], "hello world", "hello world" do |tty|
tty << "world"
tty << "hell"
tty << "\r"
end
# Manual selection without input
assert_fzf_output ["--with-nth=2,1"], "hello world", "hello world" do |tty|
tty << "\r"
end
# Manual selection with input and --multi
lines = "hello world\ngoodbye world"
assert_fzf_output %w[-m --with-nth=2,1], lines, lines do |tty|
tty << "o"
tty << "\e[Z\e[Z"
tty << "\r"
end
# Manual selection without input and --multi
assert_fzf_output %w[-m --with-nth=2,1], lines, lines do |tty|
tty << "\e[Z\e[Z"
tty << "\r"
end
end
end