Rework flags and logging

Now just append a set of global flags to keep everything in sync.

Verbose logging is now actually a toggle.

cmd/analyse.go

@@ -17,20 +17,7 @@ var Analyse = cli.Command{
 	UsageText:          "Display statistical information about the backup file.",
 	Aliases:            []string{"analyze"},
 	CustomHelpTemplate: SubcommandHelp,
-	Flags: []cli.Flag{
-		cli.StringFlag{
-			Name:  "log, l",
-			Usage: "write logging output to `FILE`",
-		},
-		cli.StringFlag{
-			Name:  "password, p",
-			Usage: "use `PASS` as password for backup file",
-		},
-		cli.StringFlag{
-			Name:  "pwdfile, P",
-			Usage: "read password from `FILE`",
-		},
-	},
+	Flags:              coreFlags,
 	Action: func(c *cli.Context) error {
 		bf, err := setup(c)
 		if err != nil {

cmd/extract.go

@@ -18,24 +18,12 @@ var Extract = cli.Command{
 	Usage:              "Retrieve attachments from the backup",
 	UsageText:          "Decrypt files embedded in the backup.",
 	CustomHelpTemplate: SubcommandHelp,
-	Flags: []cli.Flag{
-		cli.StringFlag{
-			Name:  "log, l",
-			Usage: "write logging output to `FILE`",
-		},
-		cli.StringFlag{
-			Name:  "password, p",
-			Usage: "use `PASS` as password for backup file",
-		},
-		cli.StringFlag{
-			Name:  "pwdfile, P",
-			Usage: "read password from `FILE`",
-		},
+	Flags: append([]cli.Flag{
 		cli.StringFlag{
 			Name:  "outdir, o",
 			Usage: "output attachments to `DIRECTORY`",
 		},
-	},
+	}, coreFlags...),
 	Action: func(c *cli.Context) error {
 		bf, err := setup(c)
 		if err != nil {
@@ -77,7 +65,7 @@ func ExtractAttachments(bf *types.BackupFile) error {
 		}
 
 		if a := f.GetAttachment(); a != nil {
-			log.Printf("found attachment binary %v\n\n", *a.AttachmentId)
+			log.Printf("found attachment binary %v\n", *a.AttachmentId)
 			id := *a.AttachmentId
 
 			mime, hasMime := aEncs[id]

cmd/format.go

@@ -20,34 +20,22 @@ var Format = cli.Command{
 	Usage:              "Read and format the backup file",
 	UsageText:          "Parse and transform the backup file into other formats.\nValid formats include: CSV, XML.",
 	CustomHelpTemplate: SubcommandHelp,
-	Flags: []cli.Flag{
+	Flags: append([]cli.Flag{
 		cli.StringFlag{
 			Name:  "format, f",
 			Usage: "output the backup as `FORMAT`",
 			Value: "xml",
 		},
-		cli.StringFlag{
-			Name:  "log, l",
-			Usage: "write logging output to `FILE`",
-		},
 		cli.StringFlag{
 			Name:  "message, m",
 			Usage: "format `TYPE` messages",
 			Value: "sms",
 		},
-		cli.StringFlag{
-			Name:  "password, p",
-			Usage: "use `PASS` as password for backup file",
-		},
-		cli.StringFlag{
-			Name:  "pwdfile, P",
-			Usage: "read password from `FILE`",
-		},
 		cli.StringFlag{
 			Name:  "output, o",
 			Usage: "write decrypted format to `FILE`",
 		},
-	},
+	}, coreFlags...),
 	Action: func(c *cli.Context) error {
 		bf, err := setup(c)
 		if err != nil {

cmd/util.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"fmt"
 	"io/ioutil"
+	"log"
 	"os"
 
 	"github.com/pkg/errors"
@@ -32,7 +33,28 @@ const SubcommandHelp = `Usage: {{.HelpName}} [OPTION...] BACKUPFILE
   {{end}}{{end}}
 `
 
+var coreFlags = []cli.Flag{
+	cli.StringFlag{
+		Name:  "password, p",
+		Usage: "use `PASS` as password for backup file",
+	},
+	cli.StringFlag{
+		Name:  "pwdfile, P",
+		Usage: "read password from `FILE`",
+	},
+	cli.BoolFlag{
+		Name:  "verbose, v",
+		Usage: "enable verbose logging output",
+	},
+}
+
 func setup(c *cli.Context) (*types.BackupFile, error) {
+	// -- Enable logging
+
+	if !c.Bool("verbose") {
+		log.SetOutput(ioutil.Discard)
+	}
+
 	// -- Verify
 
 	if c.Args().Get(0) == "" {