Take output writer as argument

10 files changed, 49 insertions, 20 deletions

diff --git a/drive/about.go b/drive/about.go
index bea9fda..dea927c 100644
--- a/drive/about.go
+++ b/drive/about.go
@@ -1,12 +1,13 @@
 package drive
 
 import (
+    "io"
     "fmt"
-    "os"
     "text/tabwriter"
 )
 
 type AboutArgs struct {
+    Out io.Writer
     SizeInBytes bool
     ImportFormats bool
     ExportFormats bool
@@ -19,29 +20,29 @@ func (self *Drive) About(args AboutArgs) (err error) {
     }
 
     if args.ExportFormats {
-        printSupportedFormats(about.ExportFormats)
+        printSupportedFormats(args.Out, about.ExportFormats)
         return
     }
 
     if args.ImportFormats {
-        printSupportedFormats(about.ImportFormats)
+        printSupportedFormats(args.Out, about.ImportFormats)
         return
     }
 
     user := about.User
     quota := about.StorageQuota
 
-    fmt.Printf("User: %s, %s\n", user.DisplayName, user.EmailAddress)
-    fmt.Printf("Used: %s\n", formatSize(quota.UsageInDrive, args.SizeInBytes))
-    fmt.Printf("Free: %s\n", formatSize(quota.Limit - quota.UsageInDrive, args.SizeInBytes))
-    fmt.Printf("Total: %s\n", formatSize(quota.Limit, args.SizeInBytes))
-    fmt.Printf("Max upload size: %s\n", formatSize(about.MaxUploadSize, args.SizeInBytes))
+    fmt.Fprintf(args.Out, "User: %s, %s\n", user.DisplayName, user.EmailAddress)
+    fmt.Fprintf(args.Out, "Used: %s\n", formatSize(quota.UsageInDrive, args.SizeInBytes))
+    fmt.Fprintf(args.Out, "Free: %s\n", formatSize(quota.Limit - quota.UsageInDrive, args.SizeInBytes))
+    fmt.Fprintf(args.Out, "Total: %s\n", formatSize(quota.Limit, args.SizeInBytes))
+    fmt.Fprintf(args.Out, "Max upload size: %s\n", formatSize(about.MaxUploadSize, args.SizeInBytes))
     return
 }
 
-func printSupportedFormats(formats map[string][]string) {
+func printSupportedFormats(out io.Writer, formats map[string][]string) {
     w := new(tabwriter.Writer)
-    w.Init(os.Stdout, 0, 0, 3, ' ', 0)
+    w.Init(out, 0, 0, 3, ' ', 0)
 
     fmt.Fprintln(w, "From\tTo")
 
diff --git a/drive/delete.go b/drive/delete.go
index 6e868eb..cc0aeb3 100644
--- a/drive/delete.go
+++ b/drive/delete.go
@@ -1,10 +1,12 @@
 package drive
 
 import (
+    "io"
     "fmt"
 )
 
 type DeleteArgs struct {
+    Out io.Writer
     Id string
 }
 
@@ -19,6 +21,6 @@ func (self *Drive) Delete(args DeleteArgs) (err error) {
         return fmt.Errorf("Failed to delete file", err)
     }
 
-    fmt.Printf("Removed file '%s'\n", f.Name)
+    fmt.Fprintf(args.Out, "Removed file '%s'\n", f.Name)
     return
 }
diff --git a/drive/download.go b/drive/download.go
index 57e0160..31bcc58 100644
--- a/drive/download.go
+++ b/drive/download.go
@@ -7,6 +7,7 @@ import (
 )
 
 type DownloadFileArgs struct {
+    Out io.Writer
     Id string
     Force bool
     NoProgress bool
@@ -55,7 +56,7 @@ func (self *Drive) Download(args DownloadFileArgs) (err error) {
         return fmt.Errorf("Failed saving file: %s", err)
     }
 
-    fmt.Printf("Downloaded '%s' at %s, total %d\n", f.Name, "x/s", bytes)
+    fmt.Fprintf(args.Out, "Downloaded '%s' at %s, total %d\n", f.Name, "x/s", bytes)
 
     //if deleteSourceFile {
     //    self.Delete(args.Id)
diff --git a/drive/info.go b/drive/info.go
index ca09d0a..080c23c 100644
--- a/drive/info.go
+++ b/drive/info.go
@@ -1,11 +1,13 @@
 package drive
 
 import (
+    "io"
     "fmt"
     "google.golang.org/api/drive/v3"
 )
 
 type FileInfoArgs struct {
+    Out io.Writer
     Id string
     SizeInBytes bool
 }
@@ -17,6 +19,7 @@ func (self *Drive) Info(args FileInfoArgs) (err error) {
     }
 
     PrintFileInfo(PrintFileInfoArgs{
+        Out: args.Out,
         File: f,
         SizeInBytes: args.SizeInBytes,
     })
@@ -25,6 +28,7 @@ func (self *Drive) Info(args FileInfoArgs) (err error) {
 }
 
 type PrintFileInfoArgs struct {
+    Out io.Writer
     File *drive.File
     SizeInBytes bool
 }
@@ -47,7 +51,7 @@ func PrintFileInfo(args PrintFileInfoArgs) {
 
     for _, item := range items {
         if item.value() != "" {
-            fmt.Printf("%s: %s\n", item.key(), item.value())
+            fmt.Fprintf(args.Out, "%s: %s\n", item.key(), item.value())
         }
     }
 }
diff --git a/drive/list.go b/drive/list.go
index b2e3662..5649a12 100644
--- a/drive/list.go
+++ b/drive/list.go
@@ -2,12 +2,13 @@ package drive
 
 import (
     "fmt"
-    "os"
+    "io"
     "text/tabwriter"
     "google.golang.org/api/drive/v3"
 )
 
 type ListFilesArgs struct {
+    Out io.Writer
     MaxFiles int64
     NameWidth int64
     Query string
@@ -22,6 +23,7 @@ func (self *Drive) List(args ListFilesArgs) (err error) {
     }
 
     PrintFileList(PrintFileListArgs{
+        Out: args.Out,
         Files: fileList.Files,
         NameWidth: int(args.NameWidth),
         SkipHeader: args.SkipHeader,
@@ -32,6 +34,7 @@ func (self *Drive) List(args ListFilesArgs) (err error) {
 }
 
 type PrintFileListArgs struct {
+    Out io.Writer
     Files []*drive.File
     NameWidth int
     SkipHeader bool
@@ -40,7 +43,7 @@ type PrintFileListArgs struct {
 
 func PrintFileList(args PrintFileListArgs) {
     w := new(tabwriter.Writer)
-    w.Init(os.Stdout, 0, 0, 3, ' ', 0)
+    w.Init(args.Out, 0, 0, 3, ' ', 0)
 
     if !args.SkipHeader {
         fmt.Fprintln(w, "Id\tName\tSize\tCreated")
diff --git a/drive/mkdir.go b/drive/mkdir.go
index 4080474..99047ee 100644
--- a/drive/mkdir.go
+++ b/drive/mkdir.go
@@ -2,12 +2,14 @@ package drive
 
 import (
     "google.golang.org/api/drive/v3"
+    "io"
     "fmt"
 )
 
 const DirectoryMimeType = "application/vnd.google-apps.folder"
 
 type MkdirArgs struct {
+    Out io.Writer
     Name string
     Parent string
     Share bool
@@ -27,7 +29,7 @@ func (self *Drive) Mkdir(args MkdirArgs) (err error) {
         return fmt.Errorf("Failed to create folder: %s", err)
     }
 
-    PrintFileInfo(PrintFileInfoArgs{File: f})
+    PrintFileInfo(PrintFileInfoArgs{Out: args.Out, File: f})
 
     //if args.Share {
     //    self.Share(TODO)
diff --git a/drive/share.go b/drive/share.go
index 37c1bf8..43655df 100644
--- a/drive/share.go
+++ b/drive/share.go
@@ -1,11 +1,13 @@
 package drive
 
 import (
+    "io"
     "fmt"
     "google.golang.org/api/drive/v3"
 )
 
 type ShareArgs struct {
+    Out io.Writer
     FileId string
     Role string
     Type string
@@ -34,7 +36,7 @@ func (self *Drive) Share(args ShareArgs) (err error) {
         return fmt.Errorf("Failed share file: %s", err)
     }
 
-    fmt.Println(p)
+    fmt.Fprintln(args.Out, p)
     return
 }
 
diff --git a/drive/upload.go b/drive/upload.go
index 16ae940..3a65d0f 100644
--- a/drive/upload.go
+++ b/drive/upload.go
@@ -4,12 +4,14 @@ import (
     "fmt"
     "mime"
     "os"
+    "io"
     "path/filepath"
     "google.golang.org/api/drive/v3"
     "golang.org/x/net/context"
 )
 
 type UploadFileArgs struct {
+    Out io.Writer
     Path string
     Name string
     Parent string
@@ -61,7 +63,7 @@ func (self *Drive) Upload(args UploadFileArgs) (err error) {
         return fmt.Errorf("Failed to upload file: %s", err)
     }
 
-    fmt.Printf("Uploaded '%s' at %s, total %d\n", f.Name, "x/s", f.Size)
+    fmt.Fprintf(args.Out, "Uploaded '%s' at %s, total %d\n", f.Name, "x/s", f.Size)
     //if args.Share {
     //    self.Share(TODO)
     //}
diff --git a/drive/url.go b/drive/url.go
index 2dc429d..9dee4ad 100644
--- a/drive/url.go
+++ b/drive/url.go
@@ -1,20 +1,22 @@
 package drive
 
 import (
+    "io"
     "fmt"
 )
 
 type UrlArgs struct {
+    Out io.Writer
     FileId string    
     DownloadUrl bool    
 }
 
 func (self *Drive) Url(args UrlArgs) {
     if args.DownloadUrl {
-        fmt.Println(downloadUrl(args.FileId))
+        fmt.Fprintln(args.Out, downloadUrl(args.FileId))
         return
     }
-    fmt.Println(previewUrl(args.FileId))
+    fmt.Fprintln(args.Out, previewUrl(args.FileId))
 }
 
 func previewUrl(id string) string {
diff --git a/handlers.go b/handlers.go
index 5ff5cdb..a36444c 100644
--- a/handlers.go
+++ b/handlers.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"os"
 	"strings"
     "./cli"
 	"./client"
@@ -16,6 +17,7 @@ const TokenFilename = "token_v2.json"
 func listHandler(ctx cli.Context) {
     args := ctx.Args()
     err := newDrive(args).List(drive.ListFilesArgs{
+        Out: os.Stdout,
         MaxFiles: args.Int64("maxFiles"),
         NameWidth: args.Int64("nameWidth"),
         Query: args.String("query"),
@@ -28,6 +30,7 @@ func listHandler(ctx cli.Context) {
 func downloadHandler(ctx cli.Context) {
     args := ctx.Args()
     err := newDrive(args).Download(drive.DownloadFileArgs{
+        Out: os.Stdout,
         Id: args.String("id"),
         Force: args.Bool("force"),
         Stdout: args.Bool("stdout"),
@@ -39,6 +42,7 @@ func downloadHandler(ctx cli.Context) {
 func uploadHandler(ctx cli.Context) {
     args := ctx.Args()
     err := newDrive(args).Upload(drive.UploadFileArgs{
+        Out: os.Stdout,
         Path: args.String("path"),
         Name: args.String("name"),
         Parent: args.String("parent"),
@@ -53,6 +57,7 @@ func uploadHandler(ctx cli.Context) {
 func infoHandler(ctx cli.Context) {
     args := ctx.Args()
     err := newDrive(args).Info(drive.FileInfoArgs{
+        Out: os.Stdout,
         Id: args.String("id"),
         SizeInBytes: args.Bool("sizeInBytes"),
     })
@@ -62,6 +67,7 @@ func infoHandler(ctx cli.Context) {
 func mkdirHandler(ctx cli.Context) {
     args := ctx.Args()
     err := newDrive(args).Mkdir(drive.MkdirArgs{
+        Out: os.Stdout,
         Name: args.String("name"),
         Parent: args.String("parent"),
         Share: args.Bool("share"),
@@ -72,6 +78,7 @@ func mkdirHandler(ctx cli.Context) {
 func shareHandler(ctx cli.Context) {
     args := ctx.Args()
     err := newDrive(args).Share(drive.ShareArgs{
+        Out: os.Stdout,
         FileId: args.String("id"),
         Role: args.String("role"),
         Type: args.String("type"),
@@ -85,6 +92,7 @@ func shareHandler(ctx cli.Context) {
 func urlHandler(ctx cli.Context) {
     args := ctx.Args()
     newDrive(args).Url(drive.UrlArgs{
+        Out: os.Stdout,
         FileId: args.String("id"),
         DownloadUrl: args.Bool("download"),
     })
@@ -93,6 +101,7 @@ func urlHandler(ctx cli.Context) {
 func deleteHandler(ctx cli.Context) {
     args := ctx.Args()
     err := newDrive(args).Delete(drive.DeleteArgs{
+        Out: os.Stdout,
         Id: args.String("id"),
     })
     checkErr(err)
@@ -101,6 +110,7 @@ func deleteHandler(ctx cli.Context) {
 func aboutHandler(ctx cli.Context) {
     args := ctx.Args()
     err := newDrive(args).About(drive.AboutArgs{
+        Out: os.Stdout,
         SizeInBytes: args.Bool("sizeInBytes"),
         ImportFormats: args.Bool("importFormats"),
         ExportFormats: args.Bool("exportFormats"),