From dfbac8d30dfd5ad21299cce6d8561f53685acc08 Mon Sep 17 00:00:00 2001
From: Petter Rasmussen
Date: Sat, 21 Mar 2015 11:45:14 +0100
Subject: Add flag to override the transfer chunk size

Increasing the chunk size might give you faster upload speeds
if you are on a fast connection, see #49.
---
 drive.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drive.go b/drive.go
index 2220200..499d5f6 100644
--- a/drive.go
+++ b/drive.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+    "github.com/prasmussen/google-api-go-client/googleapi"
 	"github.com/prasmussen/gdrive/cli"
 	"github.com/prasmussen/gdrive/gdrive"
 	"github.com/prasmussen/gdrive/util"
@@ -47,6 +48,7 @@ type Options struct {
 		Share    bool     `goptions:"--share, description='Share uploaded file'"`
 		MimeType string   `goptions:"--mimetype, description='The MIME type (default will try to figure it out)'"`
 		Convert  bool     `goptions:"--convert, description='File will be converted to Google Docs format'"`
+        ChunkSize int64   `goptions:"-C, --chunksize, description='Set chunk size in bytes. Minimum is 262144, default is 1048576. Recommended to be a power of two.'"`
 	} `goptions:"upload"`
 
 	Download struct {
@@ -104,6 +106,12 @@ func main() {
 
 	case "upload":
 		args := opts.Upload
+
+        // Set custom chunksize if given
+        if args.ChunkSize >= (1 << 18) {
+            googleapi.SetChunkSize(args.ChunkSize)
+        }
+
 		if args.Stdin {
 			err = cli.UploadStdin(drive, os.Stdin, args.Title, args.ParentId, args.Share, args.MimeType, args.Convert)
 		} else {
-- 
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