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Merge pull request #32 from junegunn/nth

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Add --nth and --delimiter option
This commit is contained in:
Junegunn Choi 2014-03-30 15:19:05 +09:00
commit 52b74abb99
3 changed files with 144 additions and 14 deletions
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10
README.md
View File

@ -53,6 +53,8 @@ usage: fzf [options]
-e, --extended-exact Extended-search mode (exact match)
-q, --query=STR Initial query
-f, --filter=STR Filter mode. Do not start interactive finder.
-n, --nth=[-]N Match only in the N-th token of the item
-d, --delimiter=STR Field delimiter regex for --nth (default: AWK-style)
-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)
@ -177,6 +179,14 @@ fco() {
git checkout $(echo "$commit" | sed "s/ .*//")
}
# ftags - search ctags
ftags() {
local line
[ -e tags ] &&
line=$(grep -v "^!" tags | cut -f1-3 | cut -c1-80 | fzf --nth=1) &&
$EDITOR $(cut -f2 <<< "$line")
}
# fq1 [QUERY]
# - Immediately select the file when there's only one match.
# If not, start the fuzzy finder as usual.

84
fzf
View File

@ -7,7 +7,7 @@
# / __/ / /_/ __/
# /_/ /___/_/ Fuzzy finder for your shell
#
# Version: 0.8.2 (March 15, 2014)
# Version: 0.8.2 (March 30, 2014)
#
# Author: Junegunn Choi
# URL: https://github.com/junegunn/fzf
@ -50,7 +50,8 @@ end
class FZF
C = Curses
attr_reader :rxflag, :sort, :color, :black, :ansi256, :mouse, :multi, :query, :filter, :extended
attr_reader :rxflag, :sort, :nth, :color, :black, :ansi256,
:mouse, :multi, :query, :filter, :extended
class AtomicVar
def initialize value
@ -83,6 +84,8 @@ class FZF
@mouse = true
@extended = nil
@filter = nil
@nth = nil
@delim = nil
argv =
if opts = ENV['FZF_DEFAULT_OPTS']
@ -120,6 +123,17 @@ class FZF
@filter = query
when /^-f(.*)$/, /^--filter=(.*)$/
@filter = $1
when '-n', '--nth'
usage 1, 'field number required' unless nth = argv.shift
usage 1, 'invalid field number' if nth.to_i == 0
@nth = nth.to_i
when /^-n(-?[1-9][0-9]*)$/, /^--nth=(-?[1-9][0-9]*)$/
@nth = $1.to_i
when '-d', '--delimiter'
usage 1, 'delimiter required' unless delim = argv.shift
@delim = FZF.build_delim_regex delim
when /^-d(.+)$/, /^--delimiter=(.+)$/
@delim = FZF.build_delim_regex $1
when '-s', '--sort'
usage 1, 'sort size required' unless sort = argv.shift
usage 1, 'invalid sort size' unless sort =~ /^[0-9]+$/
@ -155,6 +169,11 @@ class FZF
end
end
def FZF.build_delim_regex delim
Regexp.compile(delim) rescue (delim = Regexp.escape(delim))
Regexp.compile "(?:.*?#{delim})|(?:.+?$)"
end
def start
if @filter
start_reader(false).join
@ -181,9 +200,9 @@ class FZF
def get_matcher
if @extended
ExtendedFuzzyMatcher.new @rxflag, @extended
ExtendedFuzzyMatcher.new @rxflag, @extended, @nth, @delim
else
FuzzyMatcher.new @rxflag
FuzzyMatcher.new @rxflag, @nth, @delim
end
end
@ -208,6 +227,8 @@ class FZF
-e, --extended-exact Extended-search mode (exact match)
-q, --query=STR Initial query
-f, --filter=STR Filter mode. Do not start interactive finder.
-n, --nth=[-]N Match only in the N-th token of the item
-d, --delimiter=STR Field delimiter regex for --nth (default: AWK-style)
-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)
@ -1026,10 +1047,55 @@ class FZF
end
end
class Matcher
class MatchData
def initialize n
@n = n
end
def offset _
@n
end
end
def initialize nth, delim
@nth = nth && (nth > 0 ? nth - 1 : nth)
@delim = delim
@tokens_cache = {}
end
def tokenize str
@tokens_cache[str] ||=
unless @delim
# AWK default
prefix_length = str[/^\s+/].length rescue 0
[prefix_length, (str.strip.scan(/\S+\s*/) rescue [])]
else
prefix_length = 0
[prefix_length, (str.scan(@delim) rescue [])]
end
end
def do_match str, pat
if @nth
prefix_length, tokens = tokenize str
if (token = tokens[@nth]) && (md = token.match(pat) rescue nil)
prefix_length += (tokens[0...@nth] || []).join.length
offset = md.offset(0).map { |o| o + prefix_length }
MatchData.new offset
end
else
str.match(pat) rescue nil
end
end
end
class FuzzyMatcher < Matcher
attr_reader :caches, :rxflag
def initialize rxflag
def initialize rxflag, nth = nil, delim = nil
super nth, delim
@caches = Hash.new { |h, k| h[k] = {} }
@regexp = {}
@rxflag = rxflag
@ -1073,15 +1139,15 @@ class FZF
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 = do_match(line, regexp)
md && [line, [md.offset(0)]]
}.compact
end
end
class ExtendedFuzzyMatcher < FuzzyMatcher
def initialize rxflag, mode = :fuzzy
super rxflag
def initialize rxflag, mode = :fuzzy, nth = nil, delim = nil
super rxflag, nth, delim
@regexps = {}
@mode = mode
end
@ -1143,7 +1209,7 @@ class FZF
offsets = []
regexps.all? { |pair|
regexp, invert = pair
md = line.match(regexp) rescue nil
md = do_match(line, regexp)
if md && !invert
offsets << md.offset(0)
elsif !md && invert

64
test/test_fzf.rb
View File

@ -27,8 +27,10 @@ class TestFZF < MiniTest::Unit::TestCase
ENV['FZF_DEFAULT_SORT'] = '20000'
fzf = FZF.new []
assert_equal 20000, fzf.sort
assert_equal nil, fzf.nth
ENV['FZF_DEFAULT_OPTS'] = '-x -m -s 10000 -q " hello world " +c +2 --no-mouse -f "goodbye world" --black'
ENV['FZF_DEFAULT_OPTS'] =
'-x -m -s 10000 -q " hello world " +c +2 --no-mouse -f "goodbye world" --black --nth=3'
fzf = FZF.new []
assert_equal 10000, fzf.sort
assert_equal ' hello world ',
@ -41,12 +43,13 @@ class TestFZF < MiniTest::Unit::TestCase
assert_equal false, fzf.ansi256
assert_equal true, fzf.black
assert_equal false, fzf.mouse
assert_equal 3, fzf.nth
end
def test_option_parser
# Long opts
fzf = FZF.new %w[--sort=2000 --no-color --multi +i --query hello
--filter=howdy --extended-exact --no-mouse --no-256]
--filter=howdy --extended-exact --no-mouse --no-256 --nth=1]
assert_equal 2000, fzf.sort
assert_equal true, fzf.multi
assert_equal false, fzf.color
@ -57,9 +60,10 @@ class TestFZF < MiniTest::Unit::TestCase
assert_equal 'hello', fzf.query.get
assert_equal 'howdy', fzf.filter
assert_equal :exact, fzf.extended
assert_equal 1, fzf.nth
fzf = FZF.new %w[--sort=2000 --no-color --multi +i --query hello
--filter a --filter b --no-256 --black
--filter a --filter b --no-256 --black --nth 2
--no-sort -i --color --no-multi --256]
assert_equal nil, fzf.sort
assert_equal false, fzf.multi
@ -71,9 +75,10 @@ class TestFZF < MiniTest::Unit::TestCase
assert_equal 'b', fzf.filter
assert_equal 'hello', fzf.query.get
assert_equal nil, fzf.extended
assert_equal 2, fzf.nth
# Short opts
fzf = FZF.new %w[-s 2000 +c -m +i -qhello -x -fhowdy +2]
fzf = FZF.new %w[-s 2000 +c -m +i -qhello -x -fhowdy +2 -n3]
assert_equal 2000, fzf.sort
assert_equal true, fzf.multi
assert_equal false, fzf.color
@ -82,9 +87,10 @@ class TestFZF < MiniTest::Unit::TestCase
assert_equal 'hello', fzf.query.get
assert_equal 'howdy', fzf.filter
assert_equal :fuzzy, fzf.extended
assert_equal 3, fzf.nth
# Left-to-right
fzf = FZF.new %w[-s 2000 +c -m +i -qhello -x -fgoodbye +2
fzf = FZF.new %w[-s 2000 +c -m +i -qhello -x -fgoodbye +2 -n3 -n4
-s 3000 -c +m -i -q world +x -fworld -2 --black --no-black]
assert_equal 3000, fzf.sort
assert_equal false, fzf.multi
@ -95,6 +101,7 @@ class TestFZF < MiniTest::Unit::TestCase
assert_equal 'world', fzf.query.get
assert_equal 'world', fzf.filter
assert_equal nil, fzf.extended
assert_equal 4, fzf.nth
fzf = FZF.new %w[--query hello +s -s 2000 --query=world]
assert_equal 2000, fzf.sort
@ -109,6 +116,12 @@ class TestFZF < MiniTest::Unit::TestCase
fzf = FZF.new argv
end
end
assert_raises(SystemExit) do
fzf = FZF.new %w[--nth=0]
end
assert_raises(SystemExit) do
fzf = FZF.new %w[-n 0]
end
end
# FIXME Only on 1.9 or above
@ -476,5 +489,46 @@ class TestFZF < MiniTest::Unit::TestCase
sleep interval
assert_equal false, me.double?(20)
end
def test_nth_match
list = [
' first second third',
'fourth fifth sixth',
]
matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE
assert_equal list, matcher.match(list, 'f', '', '').map(&:first)
assert_equal [
[list[0], [[2, 5]]],
[list[1], [[9, 17]]]], matcher.match(list, 'is', '', '')
matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, 2
assert_equal [[list[1], [[8, 9]]]], matcher.match(list, 'f', '', '')
assert_equal [[list[0], [[8, 9]]]], matcher.match(list, 's', '', '')
matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, 3
assert_equal [[list[0], [[19, 20]]]], matcher.match(list, 'r', '', '')
regex = FZF.build_delim_regex "\t"
matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, 1, regex
assert_equal [[list[0], [[3, 10]]]], matcher.match(list, 're', '', '')
matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, 2, regex
assert_equal [], matcher.match(list, 'r', '', '')
assert_equal [[list[1], [[9, 17]]]], matcher.match(list, 'is', '', '')
# Negative indexing
matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, -1, regex
assert_equal [[list[0], [[3, 6]]]], matcher.match(list, 'rt', '', '')
assert_equal [[list[0], [[2, 5]]], [list[1], [[9, 17]]]], matcher.match(list, 'is', '', '')
# Regex delimiter
regex = FZF.build_delim_regex "[ \t]+"
matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, 1, regex
assert_equal [list[1]], matcher.match(list, 'f', '', '').map(&:first)
matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, 2, regex
assert_equal [[list[0], [[1, 2]]], [list[1], [[8, 9]]]], matcher.match(list, 'f', '', '')
end
end