From 15c0b25d011f37e7c20aeca9eaf461f78285b8d9 Mon Sep 17 00:00:00 2001
From: Alex Pilon <apilon@hashicorp.com>
Date: Fri, 22 Feb 2019 18:24:37 -0500
Subject: deps: github.com/hashicorp/terraform@sdk-v0.11-with-go-modules
 Updated via: go get github.com/hashicorp/terraform@sdk-v0.11-with-go-modules
 and go mod tidy

---
 vendor/github.com/ulikunitz/xz/lzmafilter.go | 117 +++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 vendor/github.com/ulikunitz/xz/lzmafilter.go

(limited to 'vendor/github.com/ulikunitz/xz/lzmafilter.go')

diff --git a/vendor/github.com/ulikunitz/xz/lzmafilter.go b/vendor/github.com/ulikunitz/xz/lzmafilter.go
new file mode 100644
index 0000000..69cf5f7
--- /dev/null
+++ b/vendor/github.com/ulikunitz/xz/lzmafilter.go
@@ -0,0 +1,117 @@
+// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package xz
+
+import (
+	"errors"
+	"fmt"
+	"io"
+
+	"github.com/ulikunitz/xz/lzma"
+)
+
+// LZMA filter constants.
+const (
+	lzmaFilterID  = 0x21
+	lzmaFilterLen = 3
+)
+
+// lzmaFilter declares the LZMA2 filter information stored in an xz
+// block header.
+type lzmaFilter struct {
+	dictCap int64
+}
+
+// String returns a representation of the LZMA filter.
+func (f lzmaFilter) String() string {
+	return fmt.Sprintf("LZMA dict cap %#x", f.dictCap)
+}
+
+// id returns the ID for the LZMA2 filter.
+func (f lzmaFilter) id() uint64 { return lzmaFilterID }
+
+// MarshalBinary converts the lzmaFilter in its encoded representation.
+func (f lzmaFilter) MarshalBinary() (data []byte, err error) {
+	c := lzma.EncodeDictCap(f.dictCap)
+	return []byte{lzmaFilterID, 1, c}, nil
+}
+
+// UnmarshalBinary unmarshals the given data representation of the LZMA2
+// filter.
+func (f *lzmaFilter) UnmarshalBinary(data []byte) error {
+	if len(data) != lzmaFilterLen {
+		return errors.New("xz: data for LZMA2 filter has wrong length")
+	}
+	if data[0] != lzmaFilterID {
+		return errors.New("xz: wrong LZMA2 filter id")
+	}
+	if data[1] != 1 {
+		return errors.New("xz: wrong LZMA2 filter size")
+	}
+	dc, err := lzma.DecodeDictCap(data[2])
+	if err != nil {
+		return errors.New("xz: wrong LZMA2 dictionary size property")
+	}
+
+	f.dictCap = dc
+	return nil
+}
+
+// reader creates a new reader for the LZMA2 filter.
+func (f lzmaFilter) reader(r io.Reader, c *ReaderConfig) (fr io.Reader,
+	err error) {
+
+	config := new(lzma.Reader2Config)
+	if c != nil {
+		config.DictCap = c.DictCap
+	}
+	dc := int(f.dictCap)
+	if dc < 1 {
+		return nil, errors.New("xz: LZMA2 filter parameter " +
+			"dictionary capacity overflow")
+	}
+	if dc > config.DictCap {
+		config.DictCap = dc
+	}
+
+	fr, err = config.NewReader2(r)
+	if err != nil {
+		return nil, err
+	}
+	return fr, nil
+}
+
+// writeCloser creates a io.WriteCloser for the LZMA2 filter.
+func (f lzmaFilter) writeCloser(w io.WriteCloser, c *WriterConfig,
+) (fw io.WriteCloser, err error) {
+	config := new(lzma.Writer2Config)
+	if c != nil {
+		*config = lzma.Writer2Config{
+			Properties: c.Properties,
+			DictCap:    c.DictCap,
+			BufSize:    c.BufSize,
+			Matcher:    c.Matcher,
+		}
+	}
+
+	dc := int(f.dictCap)
+	if dc < 1 {
+		return nil, errors.New("xz: LZMA2 filter parameter " +
+			"dictionary capacity overflow")
+	}
+	if dc > config.DictCap {
+		config.DictCap = dc
+	}
+
+	fw, err = config.NewWriter2(w)
+	if err != nil {
+		return nil, err
+	}
+	return fw, nil
+}
+
+// last returns true, because an LZMA2 filter must be the last filter in
+// the filter list.
+func (f lzmaFilter) last() bool { return true }
-- 
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