1 files changed, 294 insertions, 0 deletions
diff --git a/cmd/bolt/main.go b/cmd/bolt/main.go
new file mode 100644
index 0000000..647c1c2
--- /dev/null
+++ b/cmd/bolt/main.go
@@ -0,0 +1,294 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+	"os"
+	"strconv"
+
+	"github.com/boltdb/bolt"
+	"github.com/codegangsta/cli"
+)
+
+func main() {
+	log.SetFlags(0)
+	NewApp().Run(os.Args)
+}
+
+// NewApp creates an Application instance.
+func NewApp() *cli.App {
+	app := cli.NewApp()
+	app.Name = "bolt"
+	app.Usage = "BoltDB toolkit"
+	app.Commands = []cli.Command{
+		{
+			Name:   "get",
+			Usage:  "Retrieve a value for given key in a bucket",
+			Action: GetCommand,
+		},
+		{
+			Name:   "set",
+			Usage:  "Sets a value for given key in a bucket",
+			Action: SetCommand,
+		},
+		{
+			Name:   "keys",
+			Usage:  "Retrieve a list of all keys in a bucket",
+			Action: KeysCommand,
+		},
+		{
+			Name:   "buckets",
+			Usage:  "Retrieves a list of all buckets",
+			Action: BucketsCommand,
+		},
+		{
+			Name:   "pages",
+			Usage:  "Dumps page information for a database",
+			Action: PagesCommand,
+		},
+	}
+	return app
+}
+
+// GetCommand retrieves the value for a given bucket/key.
+func GetCommand(c *cli.Context) {
+	path, name, key := c.Args().Get(0), c.Args().Get(1), c.Args().Get(2)
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		fatal(err)
+		return
+	}
+
+	db, err := bolt.Open(path, 0600)
+	if err != nil {
+		fatal(err)
+		return
+	}
+	defer db.Close()
+
+	err = db.With(func(tx *bolt.Tx) error {
+		// Find bucket.
+		b := tx.Bucket(name)
+		if b == nil {
+			fatalf("bucket not found: %s", name)
+			return nil
+		}
+
+		// Find value for a given key.
+		value := b.Get([]byte(key))
+		if value == nil {
+			fatalf("key not found: %s", key)
+			return nil
+		}
+
+		println(string(value))
+		return nil
+	})
+	if err != nil {
+		fatal(err)
+		return
+	}
+}
+
+// SetCommand sets the value for a given key in a bucket.
+func SetCommand(c *cli.Context) {
+	path, name, key, value := c.Args().Get(0), c.Args().Get(1), c.Args().Get(2), c.Args().Get(3)
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		fatal(err)
+		return
+	}
+
+	db, err := bolt.Open(path, 0600)
+	if err != nil {
+		fatal(err)
+		return
+	}
+	defer db.Close()
+
+	err = db.Do(func(tx *bolt.Tx) error {
+		// Find bucket.
+		b := tx.Bucket(name)
+		if b == nil {
+			fatalf("bucket not found: %s", name)
+			return nil
+		}
+
+		// Set value for a given key.
+		return b.Put([]byte(key), []byte(value))
+	})
+	if err != nil {
+		fatal(err)
+		return
+	}
+}
+
+// KeysCommand retrieves a list of keys for a given bucket.
+func KeysCommand(c *cli.Context) {
+	path, name := c.Args().Get(0), c.Args().Get(1)
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		fatal(err)
+		return
+	}
+
+	db, err := bolt.Open(path, 0600)
+	if err != nil {
+		fatal(err)
+		return
+	}
+	defer db.Close()
+
+	err = db.With(func(tx *bolt.Tx) error {
+		// Find bucket.
+		b := tx.Bucket(name)
+		if b == nil {
+			fatalf("bucket not found: %s", name)
+			return nil
+		}
+
+		// Iterate over each key.
+		return b.ForEach(func(key, _ []byte) error {
+			println(string(key))
+			return nil
+		})
+	})
+	if err != nil {
+		fatal(err)
+		return
+	}
+}
+
+// BucketsCommand retrieves a list of all buckets.
+func BucketsCommand(c *cli.Context) {
+	path := c.Args().Get(0)
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		fatal(err)
+		return
+	}
+
+	db, err := bolt.Open(path, 0600)
+	if err != nil {
+		fatal(err)
+		return
+	}
+	defer db.Close()
+
+	err = db.With(func(tx *bolt.Tx) error {
+		for _, b := range tx.Buckets() {
+			println(b.Name())
+		}
+		return nil
+	})
+	if err != nil {
+		fatal(err)
+		return
+	}
+}
+
+// PagesCommand prints a list of all pages in a database.
+func PagesCommand(c *cli.Context) {
+	path := c.Args().Get(0)
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		fatal(err)
+		return
+	}
+
+	db, err := bolt.Open(path, 0600)
+	if err != nil {
+		fatal(err)
+		return
+	}
+	defer db.Close()
+
+	println("ID       TYPE       ITEMS  OVRFLW")
+	println("======== ========== ====== ======")
+
+	db.Do(func(tx *bolt.Tx) error {
+		var id int
+		for {
+			p, err := tx.Page(id)
+			if err != nil {
+				fatalf("page error: %d: %s", id, err)
+			} else if p == nil {
+				break
+			}
+
+			var overflow string
+			if p.OverflowCount > 0 {
+				overflow = strconv.Itoa(p.OverflowCount)
+			}
+			printf("%-8d %-10s %-6d %-6s\n", p.ID, p.Type, p.Count, overflow)
+			id += 1 + p.OverflowCount
+		}
+		return nil
+	})
+}
+
+var logger = log.New(os.Stderr, "", 0)
+var logBuffer *bytes.Buffer
+
+func print(v ...interface{}) {
+	if testMode {
+		logger.Print(v...)
+	} else {
+		fmt.Print(v...)
+	}
+}
+
+func printf(format string, v ...interface{}) {
+	if testMode {
+		logger.Printf(format, v...)
+	} else {
+		fmt.Printf(format, v...)
+	}
+}
+
+func println(v ...interface{}) {
+	if testMode {
+		logger.Println(v...)
+	} else {
+		fmt.Println(v...)
+	}
+}
+
+func fatal(v ...interface{}) {
+	logger.Print(v...)
+	if !testMode {
+		os.Exit(1)
+	}
+}
+
+func fatalf(format string, v ...interface{}) {
+	logger.Printf(format, v...)
+	if !testMode {
+		os.Exit(1)
+	}
+}
+
+func fatalln(v ...interface{}) {
+	logger.Println(v...)
+	if !testMode {
+		os.Exit(1)
+	}
+}
+
+// LogBuffer returns the contents of the log.
+// This only works while the CLI is in test mode.
+func LogBuffer() string {
+	if logBuffer != nil {
+		return logBuffer.String()
+	}
+	return ""
+}
+
+var testMode bool
+
+// SetTestMode sets whether the CLI is running in test mode and resets the logger.
+func SetTestMode(value bool) {
+	testMode = value
+	if testMode {
+		logBuffer = bytes.NewBuffer(nil)
+		logger = log.New(logBuffer, "", 0)
+	} else {
+		logger = log.New(os.Stderr, "", 0)
+	}
+}