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vikesh-raj committed Nov 3, 2020
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5 changes: 5 additions & 0 deletions .gitignore
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*.html
*.txt
*.out
.vscode/
cmd/dumpspm/dumpspm
21 changes: 21 additions & 0 deletions LICENSE
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MIT License

Copyright (c) 2020 Vikesh Raj C

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.
14 changes: 14 additions & 0 deletions Makefile
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.PHONY: test clean

sentencepiece/sentencepiece_model.pb.go: sentencepiece/sentencepiece_model.proto
protoc --go_out=. $<


cmd/dumpspm/dumpspm: cmd/dumpspm/main.go
cd cmd/dumpspm && go build

test:
go test -cover -coverprofile=c.out ./sentencepiece && go tool cover -html=c.out -o coverage.html

clean:
rm -f *.out coverage.html cmd/dumpspm/dumpspm
17 changes: 17 additions & 0 deletions README.md
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Sentence Piece Encoder
======================

This is pure go implementation of the sentencepiece encoder.
It takes a sentencepiece model and tokenizes it.

Example:

```go

import "github.com/vikesh-raj/go-sentencepiece-encoder/sentencepiece"

text := "This is a sample text"
spm, _ := sentencepiece.NewSentencepieceFromFile("spm.model", false)
tokens := spm.Tokenize(text)

```
10 changes: 10 additions & 0 deletions cmd/dumpspm/go.mod
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module github.com/vikesh-raj/go-sentencepiece-encoder/cmd/dumpspm

go 1.13

replace github.com/vikesh-raj/go-sentencepiece-encoder => ../..

require (
github.com/vikesh-raj/go-sentencepiece-encoder v0.0.0-00010101000000-000000000000
google.golang.org/protobuf v1.25.0
)
64 changes: 64 additions & 0 deletions cmd/dumpspm/go.sum
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44 changes: 44 additions & 0 deletions cmd/dumpspm/main.go
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package main

import (
"fmt"
"io/ioutil"
"os"

"github.com/vikesh-raj/go-sentencepiece-encoder/sentencepiece"
"google.golang.org/protobuf/proto"
)

func dumpWords(filename string) error {
bytes, err := ioutil.ReadFile(filename)
if err != nil {
return fmt.Errorf("Unable to read file : %s, err %v", filename, err)
}
var model sentencepiece.ModelProto
err = proto.Unmarshal(bytes, &model)
if err != nil {
return fmt.Errorf("Unable to read model file : %s, err %v", filename, err)
}

count := 0
for i, piece := range model.GetPieces() {
word := piece.GetPiece()
fmt.Println(word, piece.GetScore(), i)
count++
}

fmt.Println("Total words :", count)
return nil
}

func main() {
if len(os.Args) != 2 {
fmt.Printf("Expected Sentencepiece model as argument.\n")
os.Exit(1)
}
modelFile := os.Args[1]
if err := dumpWords(modelFile); err != nil {
fmt.Fprintf(os.Stderr, "error: %v\n", err)
os.Exit(1)
}
}
9 changes: 9 additions & 0 deletions go.mod
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module github.com/vikesh-raj/go-sentencepiece-encoder

go 1.15

require (
github.com/golang/protobuf v1.4.1
golang.org/x/text v0.3.0
google.golang.org/protobuf v1.25.0
)
72 changes: 72 additions & 0 deletions go.sum
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@@ -0,0 +1,72 @@
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golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.4 h1:0YWbFKbhXG/wIiuHDSKpS0Iy7FSA+u45VtBMfQcFTTc=
golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c=
google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
62 changes: 62 additions & 0 deletions sentencepiece/normalize.go
Original file line number Diff line number Diff line change
@@ -0,0 +1,62 @@
package sentencepiece

import (
"strings"
"unicode"

"golang.org/x/text/unicode/norm"
)

func sanitize(s string) string {
return norm.NFKC.String(s)
}

func normalize(s string) string {
replacer := func(r rune) rune {
if isControl(r) || r == 0 {
return -1
}
if unicode.IsSpace(r) {
return ' '
}
return r
}
return sanitize(strings.Map(replacer, s))
}

var controlChars []rune = []rune{
0x007F, 0x00AD, 0x0600, 0x0601, 0x0602, 0x0603, 0x0604, 0x0605, 0x061C, 0x06DD, 0x070F,
0x08E2, 0x180E, 0x200B, 0x200C, 0x200D, 0x200E, 0x200F, 0x202A, 0x202B, 0x202C, 0x202D,
0x202E, 0x2060, 0x2061, 0x2062, 0x2063, 0x2064, 0x2066, 0x2067, 0x2068, 0x2069, 0x206A,
0x206B, 0x206C, 0x206D, 0x206E, 0x206F, 0xFEFF, 0xFFF9, 0xFFFA, 0xFFFB, 0x110BD,
0x110CD, 0x13430, 0x13431, 0x13432, 0x13433, 0x13434, 0x13435, 0x13436, 0x13437,
0x13438, 0x1BCA0, 0x1BCA1, 0x1BCA2, 0x1BCA3, 0x1D173, 0x1D174, 0x1D175, 0x1D176,
0x1D177, 0x1D178, 0x1D179, 0x1D17A, 0xE0001,
}

func isControl(c rune) bool {
if c == ' ' || c == '\n' || c == '\r' || c == '\t' {
return false
}
if c <= 0x001F || (c >= 0x0080 && c <= 0x009F) ||
(c >= 0xE0020 && c <= 0xE007F) ||
(c >= 0xE000 && c <= 0xF8FF) ||
(c >= 0xF0000 && c <= 0xFFFFD) ||
(c >= 0x100000 && c <= 0x10FFFD) ||
(c >= 0xD800 && c <= 0xDB7F) ||
(c >= 0xDB80 && c <= 0xDBFF) ||
(c >= 0xDC00 && c <= 0xDFFF) ||
isControlChar(c) {
return true
}
return false
}

func isControlChar(c rune) bool {
for _, ch := range controlChars {
if ch == c {
return true
}
}
return false
}
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