diff options
Diffstat (limited to 'vendor/github.com/evidlo/fuzzysearch')
| -rw-r--r-- | vendor/github.com/evidlo/fuzzysearch/LICENSE | 21 | ||||
| -rw-r--r-- | vendor/github.com/evidlo/fuzzysearch/fuzzy/fuzzy.go | 176 | ||||
| -rw-r--r-- | vendor/github.com/evidlo/fuzzysearch/fuzzy/levenshtein.go | 43 |
3 files changed, 0 insertions, 240 deletions
diff --git a/vendor/github.com/evidlo/fuzzysearch/LICENSE b/vendor/github.com/evidlo/fuzzysearch/LICENSE deleted file mode 100644 index 9cc7533..0000000 --- a/vendor/github.com/evidlo/fuzzysearch/LICENSE +++ /dev/null @@ -1,21 +0,0 @@ -The MIT License (MIT) - -Copyright (c) 2015 Peter Renström - -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. diff --git a/vendor/github.com/evidlo/fuzzysearch/fuzzy/fuzzy.go b/vendor/github.com/evidlo/fuzzysearch/fuzzy/fuzzy.go deleted file mode 100644 index 163bc92..0000000 --- a/vendor/github.com/evidlo/fuzzysearch/fuzzy/fuzzy.go +++ /dev/null @@ -1,176 +0,0 @@ -// Fuzzy searching allows for flexibly matching a string with partial input, -// useful for filtering data very quickly based on lightweight user input. -package fuzzy - -import ( - "unicode" - "unicode/utf8" -) - -var noop = func(r rune) rune { return r } - -// Match returns true if source matches target using a fuzzy-searching -// algorithm. Note that it doesn't implement Levenshtein distance (see -// RankMatch instead), but rather a simplified version where there's no -// approximation. The method will return true only if each character in the -// source can be found in the target and occurs after the preceding matches. -func Match(source, target string) bool { - return match(source, target, noop) -} - -// MatchFold is a case-insensitive version of Match. -func MatchFold(source, target string) bool { - return match(source, target, unicode.ToLower) -} - -func match(source, target string, fn func(rune) rune) bool { - lenDiff := len(target) - len(source) - - if lenDiff < 0 { - return false - } - - if lenDiff == 0 && source == target { - return true - } - -Outer: - for _, r1 := range source { - for i, r2 := range target { - if fn(r1) == fn(r2) { - target = target[i+utf8.RuneLen(r2):] - continue Outer - } - } - return false - } - - return true -} - -// Find will return a list of strings in targets that fuzzy matches source. -func Find(source string, targets []string) []string { - return find(source, targets, noop) -} - -// FindFold is a case-insensitive version of Find. -func FindFold(source string, targets []string) []string { - return find(source, targets, unicode.ToLower) -} - -func find(source string, targets []string, fn func(rune) rune) []string { - var matches []string - - for _, target := range targets { - if match(source, target, fn) { - matches = append(matches, target) - } - } - - return matches -} - -// RankMatch is similar to Match except it will measure the Levenshtein -// distance between the source and the target and return its result. If there -// was no match, it will return -1. -// Given the requirements of match, RankMatch only needs to perform a subset of -// the Levenshtein calculation, only deletions need be considered, required -// additions and substitutions would fail the match test. -func RankMatch(source, target string) int { - return rank(source, target, noop) -} - -// RankMatchFold is a case-insensitive version of RankMatch. -func RankMatchFold(source, target string) int { - return rank(source, target, unicode.ToLower) -} - -func rank(source, target string, fn func(rune) rune) int { - lenDiff := len(target) - len(source) - - if lenDiff < 0 { - return -1 - } - - if lenDiff == 0 && source == target { - return 0 - } - - runeDiff := 0 - -Outer: - for _, r1 := range source { - for i, r2 := range target { - if fn(r1) == fn(r2) { - target = target[i+utf8.RuneLen(r2):] - continue Outer - } else { - runeDiff++ - } - } - return -1 - } - - // Count up remaining char - for len(target) > 0 { - target = target[utf8.RuneLen(rune(target[0])):] - runeDiff++ - } - - return runeDiff -} - -// RankFind is similar to Find, except it will also rank all matches using -// Levenshtein distance. -func RankFind(source string, targets []string) Ranks { - var r Ranks - - for index, target := range targets { - if match(source, target, noop) { - distance := LevenshteinDistance(source, target) - r = append(r, Rank{source, target, distance, index}) - } - } - return r -} - -// RankFindFold is a case-insensitive version of RankFind. -func RankFindFold(source string, targets []string) Ranks { - var r Ranks - - for index, target := range targets { - if match(source, target, unicode.ToLower) { - distance := LevenshteinDistance(source, target) - r = append(r, Rank{source, target, distance, index}) - } - } - return r -} - -type Rank struct { - // Source is used as the source for matching. - Source string - - // Target is the word matched against. - Target string - - // Distance is the Levenshtein distance between Source and Target. - Distance int - - // Location of Target in original list - Index int -} - -type Ranks []Rank - -func (r Ranks) Len() int { - return len(r) -} - -func (r Ranks) Swap(i, j int) { - r[i], r[j] = r[j], r[i] -} - -func (r Ranks) Less(i, j int) bool { - return r[i].Distance < r[j].Distance -} diff --git a/vendor/github.com/evidlo/fuzzysearch/fuzzy/levenshtein.go b/vendor/github.com/evidlo/fuzzysearch/fuzzy/levenshtein.go deleted file mode 100644 index 237923d..0000000 --- a/vendor/github.com/evidlo/fuzzysearch/fuzzy/levenshtein.go +++ /dev/null @@ -1,43 +0,0 @@ -package fuzzy - -// LevenshteinDistance measures the difference between two strings. -// The Levenshtein distance between two words is the minimum number of -// single-character edits (i.e. insertions, deletions or substitutions) -// required to change one word into the other. -// -// This implemention is optimized to use O(min(m,n)) space and is based on the -// optimized C version found here: -// http://en.wikibooks.org/wiki/Algorithm_implementation/Strings/Levenshtein_distance#C -func LevenshteinDistance(s, t string) int { - r1, r2 := []rune(s), []rune(t) - column := make([]int, len(r1)+1) - - for y := 1; y <= len(r1); y++ { - column[y] = y - } - - for x := 1; x <= len(r2); x++ { - column[0] = x - - for y, lastDiag := 1, x-1; y <= len(r1); y++ { - oldDiag := column[y] - cost := 0 - if r1[y-1] != r2[x-1] { - cost = 1 - } - column[y] = min(column[y]+1, column[y-1]+1, lastDiag+cost) - lastDiag = oldDiag - } - } - - return column[len(r1)] -} - -func min(a, b, c int) int { - if a < b && a < c { - return a - } else if b < c { - return b - } - return c -} |