Add initial gpgToRCW conversion program

extra/conversion-scripts/gpgToRCW/main.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/rwinkhart/go-boilerplate/back"
+	"github.com/rwinkhart/go-boilerplate/front"
+	"github.com/rwinkhart/libmutton/core"
+	"github.com/rwinkhart/libmutton/sync"
+	"github.com/rwinkhart/rcw/wrappers"
+)
+
+func main() {
+	// get info from user
+	var rcwPassphrase []byte
+	for {
+		rcwPassphrase = front.InputHidden("RCW passphrase:")
+		if !bytes.Equal(rcwPassphrase, front.InputHidden("Confirm RCW passphrase:")) {
+			fmt.Println(back.AnsiError + "Passphrases do not match" + back.AnsiReset)
+			continue
+		}
+		break
+	}
+
+	// decrypt all GPG-encrypted entries to the output directory
+	fmt.Print("\nRe-encrypting entries. Please wait; do not force close this process.\n\nGPG may prompt you for a passphrase for decryption.\n\n")
+	var outputDir = core.EntryRoot + "-new"
+	entries, folders := sync.WalkEntryDir()
+	for _, folder := range folders {
+		err := os.MkdirAll(outputDir+strings.ReplaceAll(folder, "/", core.PathSeparator), 0700)
+		if err != nil {
+			back.PrintError("Failed to create directory: "+err.Error(), back.ErrorWrite, true)
+		}
+	}
+	var decLines []string
+	for _, entry := range entries {
+		decLines = decryptGPG(core.TargetLocationFormat(entry))
+		encBytes := wrappers.Encrypt([]byte(strings.Join(decLines, "\n")), rcwPassphrase)
+		err := os.WriteFile(outputDir+strings.ReplaceAll(entry, "/", core.PathSeparator), encBytes, 0600)
+		if err != nil {
+			back.PrintError("Failed to write to file: "+err.Error(), back.ErrorWrite, true)
+		}
+	}
+
+	// swap the new directory with the old one
+	err := os.Rename(core.EntryRoot, core.EntryRoot+"-old")
+	if err != nil {
+		back.PrintError("Failed to rename old directory: "+err.Error(), back.ErrorWrite, true)
+	}
+	err = os.Rename(outputDir, core.EntryRoot)
+	if err != nil {
+		back.PrintError("Failed to rename new directory: "+err.Error(), back.ErrorWrite, true)
+	}
+}