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Read/Edit DBs with key/value pairs in root 

Not sure how 'good' this is, but apparently some people do it, so
we may as well support it.
This commit is contained in:
Brian Buller 2021-05-31 09:29:09 -05:00
parent 14bd1cdd41
commit bbe5e92c9c
2 changed files with 50 additions and 6 deletions
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50
bolt_model.go
View File

@ -26,6 +26,7 @@ type BoltBucket struct {
parent *BoltBucket
expanded bool
errorFlag bool
isRoot bool
}
/*
@ -268,7 +269,7 @@ func (bd *BoltDB) refreshDatabase() *BoltDB {
// Reload the database into memBolt
memBolt = new(BoltDB)
db.View(func(tx *bolt.Tx) error {
return tx.ForEach(func(nm []byte, b *bolt.Bucket) error {
err := tx.ForEach(func(nm []byte, b *bolt.Bucket) error {
bb, err := readBucket(b)
if err == nil {
bb.name = string(nm)
@ -278,6 +279,18 @@ func (bd *BoltDB) refreshDatabase() *BoltDB {
}
return err
})
if err != nil {
// Check if there are key/values directly in the root
bb, err := readBucket(tx.Cursor().Bucket())
if err == nil {
bb.isRoot = true
bb.expanded = true
memBolt.buckets = append(memBolt.buckets, *bb)
return nil
}
return err
}
return err
})
return memBolt
}
@ -400,6 +413,10 @@ func deleteKey(path []string) error {
return tx.DeleteBucket([]byte(path[0]))
}
b := tx.Bucket([]byte(path[0]))
if b == nil {
// Invalid path, try for the root bucket
b = tx.Cursor().Bucket()
}
if b != nil {
if len(path) > 1 {
for i := range path[1 : len(path)-1] {
@ -426,6 +443,9 @@ func deleteKey(path []string) error {
func readBucket(b *bolt.Bucket) (*BoltBucket, error) {
bb := new(BoltBucket)
if b == nil {
return nil, errors.New("No bucket passed")
}
b.ForEach(func(k, v []byte) error {
if v == nil {
tb, err := readBucket(b.Bucket(k))
@ -454,9 +474,13 @@ func renameBucket(path []string, name string) error {
// len(b.path)-1 is the key we need to delete,
// the rest are buckets leading to that key
b := tx.Bucket([]byte(path[0]))
if b == nil {
// Invalid path, try for the root bucket
b = tx.Cursor().Bucket()
}
if b != nil {
if len(path) > 1 {
for i := range path[1:len(path)] {
for i := range path[1:] {
b = b.Bucket([]byte(path[i+1]))
if b == nil {
return errors.New("renameBucket: Invalid Path")
@ -504,6 +528,10 @@ func updatePairKey(path []string, k string) error {
// len(b.path)-1 is the key for the pair we're updating,
// the rest are buckets leading to that key
b := tx.Bucket([]byte(path[0]))
if b == nil {
// Invalid path, try for the root bucket
b = tx.Cursor().Bucket()
}
if b != nil {
if len(path) > 0 {
for i := range path[1 : len(path)-1] {
@ -536,6 +564,10 @@ func updatePairValue(path []string, v string) error {
// len(b.GetPath())-1 is the key for the pair we're updating,
// the rest are buckets leading to that key
b := tx.Bucket([]byte(path[0]))
if b == nil {
// Invalid path, try for the root bucket
b = tx.Cursor().Bucket()
}
if b != nil {
if len(path) > 0 {
for i := range path[1 : len(path)-1] {
@ -560,7 +592,7 @@ func insertBucket(path []string, n string) error {
}
// Inserts a new bucket named 'n' at 'path'
err := db.Update(func(tx *bolt.Tx) error {
if len(path) == 0 {
if len(path) == 0 || path[0] == "" {
// insert at root
_, err := tx.CreateBucket([]byte(n))
if err != nil {
@ -606,6 +638,10 @@ func insertPair(path []string, k string, v string) error {
}
var err error
b := tx.Bucket([]byte(path[0]))
if b == nil {
// Invalid path, try for the root bucket
b = tx.Cursor().Bucket()
}
if b != nil {
if len(path) > 0 {
for i := 1; i < len(path); i++ {
@ -630,6 +666,10 @@ func exportValue(path []string, fName string) error {
// len(b.path)-1 is the key whose value we want to export
// the rest are buckets leading to that key
b := tx.Bucket([]byte(path[0]))
if b == nil {
// Invalid path, try for the root bucket
b = tx.Cursor().Bucket()
}
if b != nil {
if len(path) > 1 {
for i := range path[1 : len(path)-1] {
@ -652,6 +692,10 @@ func exportJSON(path []string, fName string) error {
// len(b.path)-1 is the key whose value we want to export
// the rest are buckets leading to that key
b := tx.Bucket([]byte(path[0]))
if b == nil {
// Invalid path, try for the root bucket
b = tx.Cursor().Bucket()
}
if b != nil {
if len(path) > 1 {
for i := range path[1 : len(path)-1] {

6
screen_browser.go
View File

@ -242,7 +242,7 @@ func (screen *BrowserScreen) handleInputKeyEvent(event termbox.Event) int {
} else if p != nil {
if screen.mode == modeChangeKey {
newKey := screen.inputModal.GetValue()
if updatePairKey(screen.currentPath, newKey) != nil {
if err := updatePairKey(screen.currentPath, newKey); err != nil {
screen.setMessage("Error occurred updating Pair.")
} else {
p.key = newKey
@ -252,7 +252,7 @@ func (screen *BrowserScreen) handleInputKeyEvent(event termbox.Event) int {
}
} else if screen.mode == modeChangeVal {
newVal := screen.inputModal.GetValue()
if updatePairValue(screen.currentPath, newVal) != nil {
if err := updatePairValue(screen.currentPath, newVal); err != nil {
screen.setMessage("Error occurred updating Pair.")
} else {
p.val = newVal
@ -543,7 +543,7 @@ func (screen *BrowserScreen) drawHeader(style Style) {
headerFileName = filepath.Base(headerFileName)
}
headerString := ProgramName + ": " + headerFileName
count := ((width-len(headerString))/2)+1
count := ((width - len(headerString)) / 2) + 1
if count < 0 {
count = 0
}