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package main
import (
"fmt"
"log"
"os"
"path/filepath"
"strings"
"github.com/jonasknobloch/mbpe"
"go.jknobloc.com/x/shelf"
)
func serialize() {
base := shelf.Abs("results/knobloch/minipile")
var paths []string
if ps, err := subDirs(base); err != nil {
log.Fatal(err)
} else {
paths = ps
}
steps := []int{100512, 50256, 32768, 16384, 8192}
outRoot := shelf.Abs("tokenizers")
if err := os.MkdirAll(outRoot, os.ModePerm); err != nil {
log.Fatal(err)
}
for _, step := range steps {
for _, path := range paths {
model := mbpe.NewMBPE()
if err := model.Load(filepath.Join(path, "vocab.json"), filepath.Join(path, "merges.txt")); err != nil {
log.Fatal(err)
}
model.Trim(step)
dir := fmt.Sprintf("tokenizer_gpt2_%d_%s", step, filepath.Base(path))
out := filepath.Join(outRoot, dir)
if err := os.Mkdir(out, os.ModePerm); err != nil {
log.Fatal(err)
}
if err := model.Save(filepath.Join(out, "vocab.json"), filepath.Join(out, "merges.txt")); err != nil {
log.Fatal(err)
}
var config string
var special string
if bs, err := os.ReadFile(shelf.Abs("models/gpt2/tokenizer_config.json")); err != nil {
log.Fatal(bs)
} else {
config = string(bs)
}
if bs, err := os.ReadFile(shelf.Abs("models/gpt2/special_tokens_map.json")); err != nil {
log.Fatal(err)
} else {
special = string(bs)
}
config = strings.Replace(config, "50256", fmt.Sprintf("%d", step), -1)
if err := os.WriteFile(filepath.Join(out, "tokenizer_config.json"), []byte(config), os.ModePerm); err != nil {
log.Fatal(err)
}
if err := os.WriteFile(filepath.Join(out, "special_tokens_map.json"), []byte(special), os.ModePerm); err != nil {
log.Fatal(err)
}
}
}
}
func subDirs(base string) ([]string, error) {
paths := make([]string, 0)
err := filepath.WalkDir(base, func(path string, d os.DirEntry, err error) error {
if err != nil {
return err
}
rel, err := filepath.Rel(base, path)
if err != nil {
return err
}
depth := strings.Count(rel, string(os.PathSeparator))
if d.IsDir() && rel != "." && depth == 0 {
paths = append(paths, path)
}
return nil
})
return paths, err
}
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