Work in progress

database.go

@@ -23,38 +23,94 @@
 package main
 
 import (
+	"fmt"
 	"io/ioutil"
-	"os"
+	"path/filepath"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
 )
 
 type Database struct {
+	base     string
+	versions []Version
+}
+
+func NewDatabase(dir string) (*Database, error) {
+	db := &Database{base: dir}
+	if err := db.load(dir); err != nil {
+		return nil, err
+	}
+
+	return db, nil
 }
 
 func (this *Database) load(dir string) error {
+	base, err := filepath.Abs(dir)
+	if err != nil {
+		return err
+	}
+
+	this.base = base
+
 	dirs, err := this.scan(dir)
 	if err != nil {
 		return err
 	}
 
-	return err
+	this.version(dirs)
+	return nil
 }
 
-func (this *Database) scan(dir string) ([]os.FileInfo, error) {
+func (this *Database) version(dirs []string) []Version {
+	versions := make([]Version, 0, len(dirs))
+
+	// var parent *Version
+	// for _, dir := range dirs {
+	// 	base := filepath.Join(this.base, dir)
+	// 	// timestamp := this.timestamp(dir)
+	// 	// version := NewVersion(base, timestamp, parent)
+	// 	// parent = version
+	// }
+
+	return versions
+}
+
+func (this *Database) scan(dir string) ([]VersionMeta, error) {
 	nodes, err := ioutil.ReadDir(dir)
 	if err != nil {
 		return nil, err
 	}
 
-	var dirs []os.FileInfo
+	re, err := regexp.Compile(`^vfs_([0-9a-f])$`)
+
+	var meta []VersionMeta
 	for _, node := range nodes {
-		if node.IsDir() {
-			dirs = append(dirs, node)
-		}
+		if !node.IsDir() {
+			continue
 		}
 
-	return dirs, nil
+		matches := re.FindStringSubmatch(node.Name())
+		if len(matches) < 2 {
+			continue
 		}
 
-func (this *Database) save(dir string) {
+		timestamp, err := strconv.ParseInt(matches[1], 16, 64)
+		if err != nil {
+			continue
+		}
+
+		item := VersionMeta{
+			path:      filepath.Join(dir, matches[0]),
+			timestamp: time.Unix(timestamp, 0)}
+
+		meta = append(meta, item)
+	}
+
+	return meta, nil
+}
+
+func (this *Database) scanProps(path string) error {
 
 }

version.go

@@ -26,12 +26,17 @@ import (
 	"time"
 )
 
-type Version struct {
-	root    string
-	parent  *Version
-	version time.Time
+type VersionMeta struct {
+	path      string
+	timestamp time.Time
 }
 
-func (this *Version) NewVersion(root string, parent *Version) *Version {
-	return &Version{root: root, parent: parent}
+type Version struct {
+	base      string
+	parent    *Version
+	timestamp time.Time
+}
+
+func NewVersion(base string, timestamp time.Time, parent *Version) *Version {
+	return &Version{base, parent, timestamp}
 }

vfs.go

@@ -23,5 +23,6 @@
 package main
 
 func main() {
-
+	var db Database
+	db.load("fs")
 }