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Add --scheme=[default|path|history] option to choose scoring scheme

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Close #2909
Close #2930
This commit is contained in:
Junegunn Choi
2022-08-28 22:16:57 +09:00
parent 4bef330ce1
commit 6fb41a202a
9 changed files with 106 additions and 36 deletions
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49
src/algo/algo.go
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@@ -80,6 +80,7 @@ Scoring criteria
import (
"bytes"
"fmt"
"os"
"strings"
"unicode"
"unicode/utf8"
@@ -89,7 +90,8 @@ import (
var DEBUG bool
const delimiterChars = "/,:;|"
var delimiterChars = "/,:;|"
const whiteChars = " \t\n\v\f\r\x85\xA0"
func indexAt(index int, max int, forward bool) int {
@@ -120,12 +122,6 @@ const (
// in web2 dictionary and my file system.
bonusBoundary = scoreMatch / 2
// Extra bonus for word boundary after whitespace character or beginning of the string
bonusBoundaryWhite = bonusBoundary + 2
// Extra bonus for word boundary after slash, colon, semi-colon, and comma
bonusBoundaryDelimiter = bonusBoundary + 1
// Although bonus point for non-word characters is non-contextual, we need it
// for computing bonus points for consecutive chunks starting with a non-word
// character.
@@ -149,6 +145,16 @@ const (
bonusFirstCharMultiplier = 2
)
var (
// Extra bonus for word boundary after whitespace character or beginning of the string
bonusBoundaryWhite int16 = bonusBoundary + 2
// Extra bonus for word boundary after slash, colon, semi-colon, and comma
bonusBoundaryDelimiter int16 = bonusBoundary + 1
initialCharClass charClass = charWhite
)
type charClass int
const (
@@ -161,6 +167,29 @@ const (
charNumber
)
func Init(scheme string) bool {
switch scheme {
case "default":
bonusBoundaryWhite = bonusBoundary + 2
bonusBoundaryDelimiter = bonusBoundary + 1
case "path":
bonusBoundaryWhite = bonusBoundary
bonusBoundaryDelimiter = bonusBoundary + 1
if os.PathSeparator == '/' {
delimiterChars = "/"
} else {
delimiterChars = string([]rune{os.PathSeparator, '/'})
}
initialCharClass = charDelimiter
case "history":
bonusBoundaryWhite = bonusBoundary
bonusBoundaryDelimiter = bonusBoundary
default:
return false
}
return true
}
func posArray(withPos bool, len int) *[]int {
if withPos {
pos := make([]int, 0, len)
@@ -407,7 +436,7 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
// Phase 2. Calculate bonus for each point
maxScore, maxScorePos := int16(0), 0
pidx, lastIdx := 0, 0
pchar0, pchar, prevH0, prevClass, inGap := pattern[0], pattern[0], int16(0), charWhite, false
pchar0, pchar, prevH0, prevClass, inGap := pattern[0], pattern[0], int16(0), initialCharClass, false
Tsub := T[idx:]
H0sub, C0sub, Bsub := H0[idx:][:len(Tsub)], C0[idx:][:len(Tsub)], B[idx:][:len(Tsub)]
for off, char := range Tsub {
@@ -910,8 +939,8 @@ func EqualMatch(caseSensitive bool, normalize bool, forward bool, text *util.Cha
match = runesStr == string(pattern)
}
if match {
return Result{trimmedLen, trimmedLen + lenPattern, (scoreMatch+bonusBoundaryWhite)*lenPattern +
(bonusFirstCharMultiplier-1)*bonusBoundaryWhite}, nil
return Result{trimmedLen, trimmedLen + lenPattern, (scoreMatch+int(bonusBoundaryWhite))*lenPattern +
(bonusFirstCharMultiplier-1)*int(bonusBoundaryWhite)}, nil
}
return Result{-1, -1, 0}, nil
}