From 82ef32dcaf3619bc2d372ef0a634e56e159cc4e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Magiera?= <magik6k@gmail.com>
Date: Thu, 20 Sep 2018 16:40:31 +0200
Subject: [PATCH] coreapi unixfs: layout/chunker options
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License: MIT
Signed-off-by: Łukasz Magiera <magik6k@gmail.com>


This commit was moved from ipfs/interface-go-ipfs-core@ee22ac438536720b2646e6071ecc6519f4161a0c

This commit was moved from ipfs/boxo@f858a5213f527b1ff67c45692c9e481301678398
---
 core/coreiface/options/unixfs.go | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/core/coreiface/options/unixfs.go b/core/coreiface/options/unixfs.go
index 3c46ed086..fe41af9a8 100644
--- a/core/coreiface/options/unixfs.go
+++ b/core/coreiface/options/unixfs.go
@@ -4,6 +4,13 @@ import (
 	mh "gx/ipfs/QmPnFwZ2JXKnXgMw8CdBPxn7FWh6LLdjUjxV1fKHuJnkr8/go-multihash"
 )
 
+type Layout int
+
+const (
+	BalancedLayout Layout = iota
+	TrickleLeyout
+)
+
 type UnixfsAddSettings struct {
 	CidVersion int
 	MhType     uint64
@@ -11,6 +18,9 @@ type UnixfsAddSettings struct {
 	InlineLimit  int
 	RawLeaves    bool
 	RawLeavesSet bool
+
+	Chunker string
+	Layout  Layout
 }
 
 type UnixfsAddOption func(*UnixfsAddSettings) error
@@ -23,6 +33,9 @@ func UnixfsAddOptions(opts ...UnixfsAddOption) (*UnixfsAddSettings, error) {
 		InlineLimit:  0,
 		RawLeaves:    false,
 		RawLeavesSet: false,
+
+		Chunker: "size-262144",
+		Layout:  BalancedLayout,
 	}
 
 	for _, opt := range opts {
@@ -67,3 +80,17 @@ func (unixfsOpts) InlineLimit(limit int) UnixfsAddOption {
 		return nil
 	}
 }
+
+func (unixfsOpts) Chunker(chunker string) UnixfsAddOption {
+	return func(settings *UnixfsAddSettings) error {
+		settings.Chunker = chunker
+		return nil
+	}
+}
+
+func (unixfsOpts) Layout(layout Layout) UnixfsAddOption {
+	return func(settings *UnixfsAddSettings) error {
+		settings.Layout = layout
+		return nil
+	}
+}