rewrite checkpoint

vendor/github.com/coryb/figtree/.travis.yml

@@ -0,0 +1 @@
+language: go

vendor/github.com/coryb/figtree/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
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+      "Licensor" shall mean the copyright owner or entity authorized by
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+
+      "Legal Entity" shall mean the union of the acting entity and all
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+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
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+      including but not limited to software source code, documentation
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+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
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+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
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+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
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+      "Contribution" shall mean any work of authorship, including
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+      subsequently incorporated within the Work.
+
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+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      the conditions stated in this License.
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
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+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
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+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
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+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/github.com/coryb/figtree/Makefile

@@ -0,0 +1,18 @@
+GENERATOR_SRC = \
+	rawoption.go \
+	$(NULL)
+
+GENERATED_SRC = $(GENERATOR_SRC:%.go=gen-%.go)
+
+test: $(GENERATED_SRC)
+	go get -t -v
+	go get github.com/kr/pretty
+	go get gopkg.in/alecthomas/kingpin.v2
+	go test
+
+gen-%.go: %.go
+	# use github.com/cheekybits/genny after https://github.com/cheekybits/genny/pull/42 is merged
+	go get github.com/coryb/genny
+	go generate
+
+.PHONY: test

vendor/github.com/coryb/figtree/README.md

@@ -0,0 +1,4 @@
+[![Build Status](https://travis-ci.org/coryb/figtree.svg?branch=master)](https://travis-ci.org/coryb/figtree)
+[![GoDoc](https://godoc.org/github.com/coryb/figtree?status.png)](https://godoc.org/github.com/coryb/figtree)
+
+Figtree is a go library to recusively parse and merge yaml based config files.

vendor/github.com/coryb/figtree/convert.go

@@ -0,0 +1,91 @@
+package figtree
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// dst must be a pointer type
+func convertString(src string, dst interface{}) (err error) {
+	switch v := dst.(type) {
+	case *bool:
+		*v, err = strconv.ParseBool(src)
+	case *string:
+		*v = src
+	case *int:
+		var tmp int64
+		// this is a cheat, we only know int is at least 32 bits
+		// but we have to make a compromise here
+		tmp, err = strconv.ParseInt(src, 10, 32)
+		*v = int(tmp)
+	case *int8:
+		var tmp int64
+		tmp, err = strconv.ParseInt(src, 10, 8)
+		*v = int8(tmp)
+	case *int16:
+		var tmp int64
+		tmp, err = strconv.ParseInt(src, 10, 16)
+		*v = int16(tmp)
+	case *int32:
+		var tmp int64
+		tmp, err = strconv.ParseInt(src, 10, 32)
+		*v = int32(tmp)
+	case *int64:
+		var tmp int64
+		tmp, err = strconv.ParseInt(src, 10, 64)
+		*v = int64(tmp)
+	case *uint:
+		var tmp uint64
+		// this is a cheat, we only know uint is at least 32 bits
+		// but we have to make a compromise here
+		tmp, err = strconv.ParseUint(src, 10, 32)
+		*v = uint(tmp)
+	case *uint8:
+		var tmp uint64
+		tmp, err = strconv.ParseUint(src, 10, 8)
+		*v = uint8(tmp)
+	case *uint16:
+		var tmp uint64
+		tmp, err = strconv.ParseUint(src, 10, 16)
+		*v = uint16(tmp)
+	case *uint32:
+		var tmp uint64
+		tmp, err = strconv.ParseUint(src, 10, 32)
+		*v = uint32(tmp)
+	case *uint64:
+		var tmp uint64
+		tmp, err = strconv.ParseUint(src, 10, 64)
+		*v = uint64(tmp)
+	// hmm, collides with uint8
+	// case *byte:
+	// 	tmp := []byte(src)
+	// 	if len(tmp) == 1 {
+	// 		*v = tmp[0]
+	// 	} else {
+	// 		err = fmt.Errorf("Cannot convert string %q to byte, length: %d", src, len(tmp))
+	// 	}
+	// hmm, collides with int32
+	// case *rune:
+	// 	tmp := []rune(src)
+	// 	if len(tmp) == 1 {
+	// 		*v = tmp[0]
+	// 	} else {
+	// 		err = fmt.Errorf("Cannot convert string %q to rune, lengt: %d", src, len(tmp))
+	// 	}
+	case *float32:
+		var tmp float64
+		tmp, err = strconv.ParseFloat(src, 32)
+		*v = float32(tmp)
+	case *float64:
+		var tmp float64
+		tmp, err = strconv.ParseFloat(src, 64)
+		*v = float64(tmp)
+	default:
+		err = fmt.Errorf("Cannot convert string %q to type %T", src, dst)
+	}
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

vendor/github.com/coryb/figtree/d1/d2/d3/exec.yml

@@ -0,0 +1,13 @@
+#!/bin/sh
+cat <<EOM
+str1: d3str1val1
+arr1:
+  - d3arr1val1
+  - d3arr1val2
+map1:
+  key2: d3map1val2
+  key3: d3map1val3
+int1: 333
+float1: 3.33
+bool1: true
+EOM

vendor/github.com/coryb/figtree/d1/d2/d3/figtree.yml

@@ -0,0 +1,10 @@
+str1: d3str1val1
+arr1:
+  - d3arr1val1
+  - d3arr1val2
+map1:
+  key2: d3map1val2
+  key3: d3map1val3
+int1: 333
+float1: 3.33
+bool1: true

vendor/github.com/coryb/figtree/d1/d2/d3/overwrite.yml

@@ -0,0 +1,10 @@
+str1: d3str1val1
+arr1:
+  - d3arr1val1
+  - d3arr1val2
+map1:
+  key2: d3map1val2
+  key3: d3map1val3
+int1: 333
+float1: 3.33
+bool1: true

vendor/github.com/coryb/figtree/d1/d2/d3/stop.yml

@@ -0,0 +1,10 @@
+str1: d3str1val1
+arr1:
+  - d3arr1val1
+  - d3arr1val2
+map1:
+  key2: d3map1val2
+  key3: d3map1val3
+int1: 333
+float1: 3.33
+bool1: true

vendor/github.com/coryb/figtree/d1/d2/exec.yml

@@ -0,0 +1,13 @@
+#!/bin/sh
+cat <<EOM
+str1: d2str1val1
+arr1:
+  - d2arr1val1
+  - d2arr1val2
+map1:
+  key1: d2map1val1
+  key2: d2map1val2
+int1: 222
+float1: 2.22
+bool1: false
+EOM

vendor/github.com/coryb/figtree/d1/d2/figtree.yml

@@ -0,0 +1,10 @@
+str1: d2str1val1
+arr1:
+  - d2arr1val1
+  - d2arr1val2
+map1:
+  key1: d2map1val1
+  key2: d2map1val2
+int1: 222
+float1: 2.22
+bool1: false

vendor/github.com/coryb/figtree/d1/d2/overwrite.yml

@@ -0,0 +1,15 @@
+config:
+  overwrite:
+    - str1
+    - arr1
+    - bool1
+str1: d2str1val1
+arr1:
+  - d2arr1val1
+  - d2arr1val2
+map1:
+  key1: d2map1val1
+  key2: d2map1val2
+int1: 222
+float1: 2.22
+bool1: false

vendor/github.com/coryb/figtree/d1/d2/stop.yml

@@ -0,0 +1,12 @@
+config:
+  stop: true
+str1: d2str1val1
+arr1:
+  - d2arr1val1
+  - d2arr1val2
+map1:
+  key1: d2map1val1
+  key2: d2map1val2
+int1: 222
+float1: 2.22
+bool1: false

vendor/github.com/coryb/figtree/d1/exec.yml

@@ -0,0 +1,13 @@
+#!/bin/bash
+cat <<EOM
+str1: d1str1val1
+arr1:
+  - d1arr1val1
+  - d1arr1val2
+map1:
+  key0: d1map1val0
+  key1: d1map1val1
+int1: 111
+float1: 1.11
+bool1: true
+EOM

vendor/github.com/coryb/figtree/d1/figtree.yml

@@ -0,0 +1,10 @@
+str1: d1str1val1
+arr1:
+  - d1arr1val1
+  - d1arr1val2
+map1:
+  key0: d1map1val0
+  key1: d1map1val1
+int1: 111
+float1: 1.11
+bool1: true

vendor/github.com/coryb/figtree/d1/overwrite.yml

@@ -0,0 +1,15 @@
+config:
+  overwrite:
+    - map1
+    - int1
+    - float1
+str1: d1str1val1
+arr1:
+  - d1arr1val1
+  - d1arr1val2
+map1:
+  key0: d1map1val0
+  key1: d1map1val1
+int1: 111
+float1: 1.11
+bool1: true

vendor/github.com/coryb/figtree/d1/stop.yml

@@ -0,0 +1,10 @@
+str1: d1str1val1
+arr1:
+  - d1arr1val1
+  - d1arr1val2
+map1:
+  key0: d1map1val0
+  key1: d1map1val1
+int1: 111
+float1: 1.11
+bool1: true

vendor/github.com/coryb/figtree/env_test.go

@@ -0,0 +1,113 @@
+package figtree
+
+import (
+	"os"
+	"sort"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestOptionsEnv(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1")
+	defer os.Chdir("..")
+
+	StringifyValue = true
+	defer func() {
+		StringifyValue = false
+	}()
+
+	os.Clearenv()
+	err := LoadAllConfigs("figtree.yml", &opts)
+	assert.Nil(t, err)
+
+	got := []string{}
+	for _, env := range os.Environ() {
+		if strings.HasPrefix(env, "FIGTREE_") {
+			got = append(got, env)
+		}
+	}
+
+	sort.StringSlice(got).Sort()
+
+	expected := []string{
+		"FIGTREE_ARRAY_1=[\"d1arr1val1\",\"d1arr1val2\"]",
+		"FIGTREE_BOOL_1=true",
+		"FIGTREE_FLOAT_1=1.11",
+		"FIGTREE_INT_1=111",
+		"FIGTREE_MAP_1={\"key0\":\"d1map1val0\",\"key1\":\"d1map1val1\"}",
+		"FIGTREE_STRING_1=d1str1val1",
+	}
+
+	assert.Equal(t, expected, got)
+}
+
+func TestOptionsNamedEnv(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1")
+	defer os.Chdir("..")
+
+	StringifyValue = true
+	defer func() {
+		StringifyValue = false
+	}()
+
+	os.Clearenv()
+	fig := NewFigTree()
+	fig.EnvPrefix = "TEST"
+	err := fig.LoadAllConfigs("figtree.yml", &opts)
+	assert.Nil(t, err)
+
+	got := []string{}
+	for _, env := range os.Environ() {
+		if strings.HasPrefix(env, "FIGTREE_") || strings.HasPrefix(env, "TEST_") {
+			got = append(got, env)
+		}
+	}
+
+	sort.StringSlice(got).Sort()
+
+	expected := []string{
+		"TEST_ARRAY_1=[\"d1arr1val1\",\"d1arr1val2\"]",
+		"TEST_BOOL_1=true",
+		"TEST_FLOAT_1=1.11",
+		"TEST_INT_1=111",
+		"TEST_MAP_1={\"key0\":\"d1map1val0\",\"key1\":\"d1map1val1\"}",
+		"TEST_STRING_1=d1str1val1",
+	}
+
+	assert.Equal(t, expected, got)
+}
+
+func TestBuiltinEnv(t *testing.T) {
+	opts := TestBuiltin{}
+	os.Chdir("d1")
+	defer os.Chdir("..")
+
+	os.Clearenv()
+	err := LoadAllConfigs("figtree.yml", &opts)
+	assert.Nil(t, err)
+
+	got := []string{}
+	for _, env := range os.Environ() {
+		if strings.HasPrefix(env, "FIGTREE_") {
+			got = append(got, env)
+		}
+	}
+
+	sort.StringSlice(got).Sort()
+
+	expected := []string{
+		"FIGTREE_ARRAY_1=[\"d1arr1val1\",\"d1arr1val2\"]",
+		"FIGTREE_BOOL_1=true",
+		"FIGTREE_FLOAT_1=1.11",
+		"FIGTREE_INT_1=111",
+		"FIGTREE_LEAVE_EMPTY=",
+		"FIGTREE_MAP_1={\"key0\":\"d1map1val0\",\"key1\":\"d1map1val1\"}",
+		"FIGTREE_STRING_1=d1str1val1",
+	}
+
+	assert.Equal(t, expected, got)
+}

vendor/github.com/coryb/figtree/exec_test.go

@@ -0,0 +1,190 @@
+package figtree
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestOptionsExecConfigD3(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1/d2/d3")
+	defer os.Chdir("../../..")
+
+	arr1 := []StringOption{}
+	arr1 = append(arr1, StringOption{"exec.yml", true, "d3arr1val1"})
+	arr1 = append(arr1, StringOption{"exec.yml", true, "d3arr1val2"})
+	arr1 = append(arr1, StringOption{"../exec.yml", true, "d2arr1val1"})
+	arr1 = append(arr1, StringOption{"../exec.yml", true, "d2arr1val2"})
+	arr1 = append(arr1, StringOption{"../../exec.yml", true, "d1arr1val1"})
+	arr1 = append(arr1, StringOption{"../../exec.yml", true, "d1arr1val2"})
+
+	expected := TestOptions{
+		String1:    StringOption{"exec.yml", true, "d3str1val1"},
+		LeaveEmpty: StringOption{},
+		Array1:     arr1,
+		Map1: map[string]StringOption{
+			"key0": StringOption{"../../exec.yml", true, "d1map1val0"},
+			"key1": StringOption{"../exec.yml", true, "d2map1val1"},
+			"key2": StringOption{"exec.yml", true, "d3map1val2"},
+			"key3": StringOption{"exec.yml", true, "d3map1val3"},
+		},
+		Int1:   IntOption{"exec.yml", true, 333},
+		Float1: Float32Option{"exec.yml", true, 3.33},
+		Bool1:  BoolOption{"exec.yml", true, true},
+	}
+
+	err := LoadAllConfigs("exec.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestOptionsExecConfigD2(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1/d2")
+	defer os.Chdir("../..")
+
+	arr1 := []StringOption{}
+	arr1 = append(arr1, StringOption{"exec.yml", true, "d2arr1val1"})
+	arr1 = append(arr1, StringOption{"exec.yml", true, "d2arr1val2"})
+	arr1 = append(arr1, StringOption{"../exec.yml", true, "d1arr1val1"})
+	arr1 = append(arr1, StringOption{"../exec.yml", true, "d1arr1val2"})
+
+	expected := TestOptions{
+		String1:    StringOption{"exec.yml", true, "d2str1val1"},
+		LeaveEmpty: StringOption{},
+		Array1:     arr1,
+		Map1: map[string]StringOption{
+			"key0": StringOption{"../exec.yml", true, "d1map1val0"},
+			"key1": StringOption{"exec.yml", true, "d2map1val1"},
+			"key2": StringOption{"exec.yml", true, "d2map1val2"},
+		},
+		Int1:   IntOption{"exec.yml", true, 222},
+		Float1: Float32Option{"exec.yml", true, 2.22},
+		Bool1:  BoolOption{"exec.yml", true, false},
+	}
+
+	err := LoadAllConfigs("exec.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestOptionsExecConfigD1(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1")
+	defer os.Chdir("..")
+
+	arr1 := []StringOption{}
+	arr1 = append(arr1, StringOption{"exec.yml", true, "d1arr1val1"})
+	arr1 = append(arr1, StringOption{"exec.yml", true, "d1arr1val2"})
+
+	expected := TestOptions{
+		String1:    StringOption{"exec.yml", true, "d1str1val1"},
+		LeaveEmpty: StringOption{},
+		Array1:     arr1,
+		Map1: map[string]StringOption{
+			"key0": StringOption{"exec.yml", true, "d1map1val0"},
+			"key1": StringOption{"exec.yml", true, "d1map1val1"},
+		},
+		Int1:   IntOption{"exec.yml", true, 111},
+		Float1: Float32Option{"exec.yml", true, 1.11},
+		Bool1:  BoolOption{"exec.yml", true, true},
+	}
+
+	err := LoadAllConfigs("exec.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestBuiltinExecConfigD3(t *testing.T) {
+	opts := TestBuiltin{}
+	os.Chdir("d1/d2/d3")
+	defer os.Chdir("../../..")
+
+	arr1 := []string{}
+	arr1 = append(arr1, "d3arr1val1")
+	arr1 = append(arr1, "d3arr1val2")
+	arr1 = append(arr1, "d2arr1val1")
+	arr1 = append(arr1, "d2arr1val2")
+	arr1 = append(arr1, "d1arr1val1")
+	arr1 = append(arr1, "d1arr1val2")
+
+	expected := TestBuiltin{
+		String1:    "d3str1val1",
+		LeaveEmpty: "",
+		Array1:     arr1,
+		Map1: map[string]string{
+			"key0": "d1map1val0",
+			"key1": "d2map1val1",
+			"key2": "d3map1val2",
+			"key3": "d3map1val3",
+		},
+		Int1:   333,
+		Float1: 3.33,
+		Bool1:  true,
+	}
+
+	err := LoadAllConfigs("exec.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestBuiltinExecConfigD2(t *testing.T) {
+	opts := TestBuiltin{}
+	os.Chdir("d1/d2")
+	defer os.Chdir("../..")
+
+	arr1 := []string{}
+	arr1 = append(arr1, "d2arr1val1")
+	arr1 = append(arr1, "d2arr1val2")
+	arr1 = append(arr1, "d1arr1val1")
+	arr1 = append(arr1, "d1arr1val2")
+
+	expected := TestBuiltin{
+		String1:    "d2str1val1",
+		LeaveEmpty: "",
+		Array1:     arr1,
+		Map1: map[string]string{
+			"key0": "d1map1val0",
+			"key1": "d2map1val1",
+			"key2": "d2map1val2",
+		},
+		Int1:   222,
+		Float1: 2.22,
+		// note this will be true from d1/exec.yml since the
+		// d1/d2/exec.yml set it to false which is a zero value
+		Bool1: true,
+	}
+
+	err := LoadAllConfigs("exec.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestBuiltinExecConfigD1(t *testing.T) {
+	opts := TestBuiltin{}
+	os.Chdir("d1")
+	defer os.Chdir("..")
+
+	arr1 := []string{}
+	arr1 = append(arr1, "d1arr1val1")
+	arr1 = append(arr1, "d1arr1val2")
+
+	expected := TestBuiltin{
+		String1:    "d1str1val1",
+		LeaveEmpty: "",
+		Array1:     arr1,
+		Map1: map[string]string{
+			"key0": "d1map1val0",
+			"key1": "d1map1val1",
+		},
+		Int1:   111,
+		Float1: 1.11,
+		Bool1:  true,
+	}
+
+	err := LoadAllConfigs("exec.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}

vendor/github.com/coryb/figtree/figtree.go

@@ -0,0 +1,394 @@
+package figtree
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"reflect"
+	"strings"
+	"unicode"
+
+	"github.com/fatih/camelcase"
+	"github.com/pkg/errors"
+
+	yaml "gopkg.in/coryb/yaml.v2"
+	logging "gopkg.in/op/go-logging.v1"
+)
+
+var log = logging.MustGetLogger("figtree")
+
+type FigTree struct {
+	Defaults  interface{}
+	EnvPrefix string
+	stop      bool
+}
+
+func NewFigTree() *FigTree {
+	return &FigTree{
+		EnvPrefix: "FIGTREE",
+	}
+}
+
+func LoadAllConfigs(configFile string, options interface{}) error {
+	return NewFigTree().LoadAllConfigs(configFile, options)
+}
+
+func LoadConfig(configFile string, options interface{}) error {
+	return NewFigTree().LoadConfig(configFile, options)
+}
+
+func (f *FigTree) LoadAllConfigs(configFile string, options interface{}) error {
+	// reset from any previous config parsing runs
+	f.stop = false
+	// assert options is a pointer
+
+	paths := FindParentPaths(configFile)
+	paths = append([]string{fmt.Sprintf("/etc/%s", configFile)}, paths...)
+
+	// iterate paths in reverse
+	for i := len(paths) - 1; i >= 0; i-- {
+		file := paths[i]
+		err := f.LoadConfig(file, options)
+		if err != nil {
+			return err
+		}
+		if f.stop {
+			break
+		}
+	}
+
+	// apply defaults at the end to set any undefined fields
+	if f.Defaults != nil {
+		m := &merger{sourceFile: "default"}
+		m.mergeStructs(
+			reflect.ValueOf(options),
+			reflect.ValueOf(f.Defaults),
+		)
+		f.populateEnv(options)
+	}
+	return nil
+}
+
+func (f *FigTree) LoadConfig(file string, options interface{}) (err error) {
+	f.populateEnv(options)
+	basePath, err := os.Getwd()
+	if err != nil {
+		return err
+	}
+
+	rel, err := filepath.Rel(basePath, file)
+	if err != nil {
+		rel = file
+	}
+	m := &merger{sourceFile: rel}
+	type tmpOpts struct {
+		Config ConfigOptions
+	}
+
+	if stat, err := os.Stat(file); err == nil {
+		tmp := reflect.New(reflect.ValueOf(options).Elem().Type()).Interface()
+		if stat.Mode()&0111 == 0 {
+			log.Debugf("Loading config %s", file)
+			// first parse out any config processing option
+			if data, err := ioutil.ReadFile(file); err == nil {
+				err := yaml.Unmarshal(data, m)
+				if err != nil {
+					return errors.Wrap(err, fmt.Sprintf("Unable to parse %s", file))
+				}
+
+				err = yaml.Unmarshal(data, tmp)
+				if err != nil {
+					return errors.Wrap(err, fmt.Sprintf("Unable to parse %s", file))
+				}
+				// if reflect.ValueOf(tmp).Kind() == reflect.Map {
+				// 	tmp, _ = util.YamlFixup(tmp)
+				// }
+			}
+		} else {
+			log.Debugf("Found Executable Config file: %s", file)
+			// it is executable, so run it and try to parse the output
+			cmd := exec.Command(file)
+			stdout := bytes.NewBufferString("")
+			cmd.Stdout = stdout
+			cmd.Stderr = bytes.NewBufferString("")
+			if err := cmd.Run(); err != nil {
+				return errors.Wrap(err, fmt.Sprintf("%s is exectuable, but it failed to execute:\n%s", file, cmd.Stderr))
+			}
+			// first parse out any config processing option
+			err := yaml.Unmarshal(stdout.Bytes(), m)
+			if err != nil {
+				return errors.Wrap(err, fmt.Sprintf("Unable to parse %s", file))
+			}
+			err = yaml.Unmarshal(stdout.Bytes(), tmp)
+			if err != nil {
+				return errors.Wrap(err, fmt.Sprintf("Failed to parse STDOUT from executable config file %s", file))
+			}
+		}
+		m.setSource(reflect.ValueOf(tmp))
+		m.mergeStructs(
+			reflect.ValueOf(options),
+			reflect.ValueOf(tmp),
+		)
+		if m.Config.Stop {
+			f.stop = true
+			return nil
+		}
+		f.populateEnv(options)
+	}
+	return nil
+}
+
+type ConfigOptions struct {
+	Overwrite []string `json:"overwrite,omitempty" yaml:"overwrite,omitempty"`
+	Stop      bool     `json:"stop,omitempty" yaml:"stop,omitempty"`
+	// Merge     bool     `json:"merge,omitempty" yaml:"merge,omitempty"`
+}
+
+type merger struct {
+	sourceFile string
+	Config     ConfigOptions `json:"config,omitempty" yaml:"config,omitempty"`
+}
+
+func yamlFieldName(sf reflect.StructField) string {
+	if tag, ok := sf.Tag.Lookup("yaml"); ok {
+		// with yaml:"foobar,omitempty"
+		// we just want to the "foobar" part
+		parts := strings.Split(tag, ",")
+		return parts[0]
+	}
+	return sf.Name
+}
+
+func (m *merger) mustOverwrite(name string) bool {
+	for _, prop := range m.Config.Overwrite {
+		if name == prop {
+			return true
+		}
+	}
+	return false
+}
+
+func isEmpty(v reflect.Value) bool {
+	return reflect.DeepEqual(v.Interface(), reflect.Zero(v.Type()).Interface())
+}
+
+func isSame(v1, v2 reflect.Value) bool {
+	return reflect.DeepEqual(v1.Interface(), v2.Interface())
+}
+
+// recursively set the Source attribute of the Options
+func (m *merger) setSource(v reflect.Value) {
+	if v.Kind() == reflect.Ptr {
+		v = v.Elem()
+	}
+	switch v.Kind() {
+	case reflect.Map:
+		for _, key := range v.MapKeys() {
+			keyval := v.MapIndex(key)
+			if keyval.Kind() == reflect.Struct && keyval.FieldByName("Source").IsValid() {
+				// map values are immutable, so we need to copy the value
+				// update the value, then re-insert the value to the map
+				newval := reflect.New(keyval.Type())
+				newval.Elem().Set(keyval)
+				m.setSource(newval)
+				v.SetMapIndex(key, newval.Elem())
+			}
+		}
+	case reflect.Struct:
+		if v.CanAddr() {
+			if option, ok := v.Addr().Interface().(Option); ok {
+				if option.IsDefined() {
+					option.SetSource(m.sourceFile)
+				}
+				return
+			}
+		}
+		for i := 0; i < v.NumField(); i++ {
+			structField := v.Type().Field(i)
+			// PkgPath is empty for upper case (exported) field names.
+			if structField.PkgPath != "" {
+				// unexported field, skipping
+				continue
+			}
+			m.setSource(v.Field(i))
+		}
+	case reflect.Array:
+		fallthrough
+	case reflect.Slice:
+		for i := 0; i < v.Len(); i++ {
+			m.setSource(v.Index(i))
+		}
+	}
+}
+
+func (m *merger) mergeStructs(ov, nv reflect.Value) {
+	if ov.Kind() == reflect.Ptr {
+		ov = ov.Elem()
+	}
+	if nv.Kind() == reflect.Ptr {
+		nv = nv.Elem()
+	}
+	if ov.Kind() == reflect.Map && nv.Kind() == reflect.Map {
+		m.mergeMaps(ov, nv)
+		return
+	}
+	if !ov.IsValid() || !nv.IsValid() {
+		return
+	}
+	for i := 0; i < nv.NumField(); i++ {
+		ovStructField := ov.Type().Field(i)
+		nvStructField := nv.Type().Field(i)
+		// PkgPath is empty for upper case (exported) field names.
+		if ovStructField.PkgPath != "" || nvStructField.PkgPath != "" {
+			// unexported field, skipping
+			continue
+		}
+		fieldName := yamlFieldName(ovStructField)
+
+		if (isEmpty(ov.Field(i)) || m.mustOverwrite(fieldName)) && !isSame(ov.Field(i), nv.Field(i)) {
+			log.Debugf("Setting %s to %#v", nv.Type().Field(i).Name, nv.Field(i).Interface())
+			ov.Field(i).Set(nv.Field(i))
+		} else {
+			switch ov.Field(i).Kind() {
+			case reflect.Map:
+				if nv.Field(i).Len() > 0 {
+					log.Debugf("Merging: %v with %v", ov.Field(i), nv.Field(i))
+					m.mergeMaps(ov.Field(i), nv.Field(i))
+				}
+			case reflect.Slice:
+				if nv.Field(i).Len() > 0 {
+					log.Debugf("Merging: %v with %v", ov.Field(i), nv.Field(i))
+					if ov.Field(i).CanSet() {
+						if ov.Field(i).Len() == 0 {
+							ov.Field(i).Set(nv.Field(i))
+						} else {
+							log.Debugf("Merging: %v with %v", ov.Field(i), nv.Field(i))
+							ov.Field(i).Set(m.mergeArrays(ov.Field(i), nv.Field(i)))
+						}
+					}
+
+				}
+			case reflect.Array:
+				if nv.Field(i).Len() > 0 {
+					log.Debugf("Merging: %v with %v", ov.Field(i), nv.Field(i))
+					ov.Field(i).Set(m.mergeArrays(ov.Field(i), nv.Field(i)))
+				}
+			case reflect.Struct:
+				// only merge structs if they are not an Option type:
+				if _, ok := ov.Field(i).Addr().Interface().(Option); !ok {
+					log.Debugf("Merging: %v with %v", ov.Field(i), nv.Field(i))
+					m.mergeStructs(ov.Field(i), nv.Field(i))
+				}
+			}
+		}
+	}
+}
+
+func (m *merger) mergeMaps(ov, nv reflect.Value) {
+	for _, key := range nv.MapKeys() {
+		if !ov.MapIndex(key).IsValid() {
+			log.Debugf("Setting %v to %#v", key.Interface(), nv.MapIndex(key).Interface())
+			ov.SetMapIndex(key, nv.MapIndex(key))
+		} else {
+			ovi := reflect.ValueOf(ov.MapIndex(key).Interface())
+			nvi := reflect.ValueOf(nv.MapIndex(key).Interface())
+			switch ovi.Kind() {
+			case reflect.Map:
+				log.Debugf("Merging: %v with %v", ovi.Interface(), nvi.Interface())
+				m.mergeMaps(ovi, nvi)
+			case reflect.Slice:
+				log.Debugf("Merging: %v with %v", ovi.Interface(), nvi.Interface())
+				ov.SetMapIndex(key, m.mergeArrays(ovi, nvi))
+			case reflect.Array:
+				log.Debugf("Merging: %v with %v", ovi.Interface(), nvi.Interface())
+				ov.SetMapIndex(key, m.mergeArrays(ovi, nvi))
+			}
+		}
+	}
+}
+
+func (m *merger) mergeArrays(ov, nv reflect.Value) reflect.Value {
+Outer:
+	for ni := 0; ni < nv.Len(); ni++ {
+		niv := nv.Index(ni)
+		for oi := 0; oi < ov.Len(); oi++ {
+			oiv := ov.Index(oi)
+			if reflect.DeepEqual(niv.Interface(), oiv.Interface()) {
+				continue Outer
+			}
+		}
+		log.Debugf("Appending %v to %v", niv.Interface(), ov)
+		ov = reflect.Append(ov, niv)
+	}
+	return ov
+}
+
+func (f *FigTree) populateEnv(data interface{}) {
+	options := reflect.ValueOf(data)
+	if options.Kind() == reflect.Ptr {
+		options = reflect.ValueOf(options.Elem().Interface())
+	}
+	if options.Kind() == reflect.Struct {
+		for i := 0; i < options.NumField(); i++ {
+			structField := options.Type().Field(i)
+			// PkgPath is empty for upper case (exported) field names.
+			if structField.PkgPath != "" {
+				// unexported field, skipping
+				continue
+			}
+			name := strings.Join(camelcase.Split(structField.Name), "_")
+			envName := fmt.Sprintf("%s_%s", f.EnvPrefix, strings.ToUpper(name))
+
+			envName = strings.Map(func(r rune) rune {
+				if unicode.IsDigit(r) || unicode.IsLetter(r) {
+					return r
+				}
+				return '_'
+			}, envName)
+			var val string
+			switch t := options.Field(i).Interface().(type) {
+			case string:
+				val = t
+			case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, float32, float64, bool:
+				val = fmt.Sprintf("%v", t)
+			default:
+				switch options.Field(i).Kind() {
+				case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
+					if options.Field(i).IsNil() {
+						continue
+					}
+				}
+				if t == nil {
+					continue
+				}
+				type definable interface {
+					IsDefined() bool
+				}
+				if def, ok := t.(definable); ok {
+					// skip fields that are not defined
+					if !def.IsDefined() {
+						continue
+					}
+				}
+				type gettable interface {
+					GetValue() interface{}
+				}
+				if get, ok := t.(gettable); ok {
+					val = fmt.Sprintf("%v", get.GetValue())
+				} else {
+					if b, err := json.Marshal(t); err == nil {
+						val = strings.TrimSpace(string(b))
+						if val == "null" {
+							val = ""
+						}
+					}
+				}
+			}
+			os.Setenv(envName, val)
+		}
+	}
+}

vendor/github.com/coryb/figtree/figtree_test.go

@@ -0,0 +1,214 @@
+package figtree
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func init() {
+	StringifyValue = false
+}
+
+type TestOptions struct {
+	String1    StringOption     `json:"str1,omitempty" yaml:"str1,omitempty"`
+	LeaveEmpty StringOption     `json:"leave-empty,omitempty" yaml:"leave-empty,omitempty"`
+	Array1     ListStringOption `json:"arr1,omitempty" yaml:"arr1,omitempty"`
+	Map1       MapStringOption  `json:"map1,omitempty" yaml:"map1,omitempty"`
+	Int1       IntOption        `json:"int1,omitempty" yaml:"int1,omitempty"`
+	Float1     Float32Option    `json:"float1,omitempty" yaml:"float1,omitempty"`
+	Bool1      BoolOption       `json:"bool1,omitempty" yaml:"bool1,omitempty"`
+}
+
+type TestBuiltin struct {
+	String1    string            `yaml:"str1,omitempty"`
+	LeaveEmpty string            `yaml:"leave-empty,omitempty"`
+	Array1     []string          `yaml:"arr1,omitempty"`
+	Map1       map[string]string `yaml:"map1,omitempty"`
+	Int1       int               `yaml:"int1,omitempty"`
+	Float1     float32           `yaml:"float1,omitempty"`
+	Bool1      bool              `yaml:"bool1,omitempty"`
+}
+
+func TestOptionsLoadConfigD3(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1/d2/d3")
+	defer os.Chdir("../../..")
+
+	arr1 := []StringOption{}
+	arr1 = append(arr1, StringOption{"figtree.yml", true, "d3arr1val1"})
+	arr1 = append(arr1, StringOption{"figtree.yml", true, "d3arr1val2"})
+	arr1 = append(arr1, StringOption{"../figtree.yml", true, "d2arr1val1"})
+	arr1 = append(arr1, StringOption{"../figtree.yml", true, "d2arr1val2"})
+	arr1 = append(arr1, StringOption{"../../figtree.yml", true, "d1arr1val1"})
+	arr1 = append(arr1, StringOption{"../../figtree.yml", true, "d1arr1val2"})
+
+	expected := TestOptions{
+		String1:    StringOption{"figtree.yml", true, "d3str1val1"},
+		LeaveEmpty: StringOption{},
+		Array1:     arr1,
+		Map1: map[string]StringOption{
+			"key0": StringOption{"../../figtree.yml", true, "d1map1val0"},
+			"key1": StringOption{"../figtree.yml", true, "d2map1val1"},
+			"key2": StringOption{"figtree.yml", true, "d3map1val2"},
+			"key3": StringOption{"figtree.yml", true, "d3map1val3"},
+		},
+		Int1:   IntOption{"figtree.yml", true, 333},
+		Float1: Float32Option{"figtree.yml", true, 3.33},
+		Bool1:  BoolOption{"figtree.yml", true, true},
+	}
+
+	err := LoadAllConfigs("figtree.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestOptionsLoadConfigD2(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1/d2")
+	defer os.Chdir("../..")
+
+	arr1 := []StringOption{}
+	arr1 = append(arr1, StringOption{"figtree.yml", true, "d2arr1val1"})
+	arr1 = append(arr1, StringOption{"figtree.yml", true, "d2arr1val2"})
+	arr1 = append(arr1, StringOption{"../figtree.yml", true, "d1arr1val1"})
+	arr1 = append(arr1, StringOption{"../figtree.yml", true, "d1arr1val2"})
+
+	expected := TestOptions{
+		String1:    StringOption{"figtree.yml", true, "d2str1val1"},
+		LeaveEmpty: StringOption{},
+		Array1:     arr1,
+		Map1: map[string]StringOption{
+			"key0": StringOption{"../figtree.yml", true, "d1map1val0"},
+			"key1": StringOption{"figtree.yml", true, "d2map1val1"},
+			"key2": StringOption{"figtree.yml", true, "d2map1val2"},
+		},
+		Int1:   IntOption{"figtree.yml", true, 222},
+		Float1: Float32Option{"figtree.yml", true, 2.22},
+		Bool1:  BoolOption{"figtree.yml", true, false},
+	}
+
+	err := LoadAllConfigs("figtree.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestOptionsLoadConfigD1(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1")
+	defer os.Chdir("..")
+
+	arr1 := []StringOption{}
+	arr1 = append(arr1, StringOption{"figtree.yml", true, "d1arr1val1"})
+	arr1 = append(arr1, StringOption{"figtree.yml", true, "d1arr1val2"})
+
+	expected := TestOptions{
+		String1:    StringOption{"figtree.yml", true, "d1str1val1"},
+		LeaveEmpty: StringOption{},
+		Array1:     arr1,
+		Map1: map[string]StringOption{
+			"key0": StringOption{"figtree.yml", true, "d1map1val0"},
+			"key1": StringOption{"figtree.yml", true, "d1map1val1"},
+		},
+		Int1:   IntOption{"figtree.yml", true, 111},
+		Float1: Float32Option{"figtree.yml", true, 1.11},
+		Bool1:  BoolOption{"figtree.yml", true, true},
+	}
+
+	err := LoadAllConfigs("figtree.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestBuiltinLoadConfigD3(t *testing.T) {
+	opts := TestBuiltin{}
+	os.Chdir("d1/d2/d3")
+	defer os.Chdir("../../..")
+
+	arr1 := []string{}
+	arr1 = append(arr1, "d3arr1val1")
+	arr1 = append(arr1, "d3arr1val2")
+	arr1 = append(arr1, "d2arr1val1")
+	arr1 = append(arr1, "d2arr1val2")
+	arr1 = append(arr1, "d1arr1val1")
+	arr1 = append(arr1, "d1arr1val2")
+
+	expected := TestBuiltin{
+		String1:    "d3str1val1",
+		LeaveEmpty: "",
+		Array1:     arr1,
+		Map1: map[string]string{
+			"key0": "d1map1val0",
+			"key1": "d2map1val1",
+			"key2": "d3map1val2",
+			"key3": "d3map1val3",
+		},
+		Int1:   333,
+		Float1: 3.33,
+		Bool1:  true,
+	}
+
+	err := LoadAllConfigs("figtree.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestBuiltinLoadConfigD2(t *testing.T) {
+	opts := TestBuiltin{}
+	os.Chdir("d1/d2")
+	defer os.Chdir("../..")
+
+	arr1 := []string{}
+	arr1 = append(arr1, "d2arr1val1")
+	arr1 = append(arr1, "d2arr1val2")
+	arr1 = append(arr1, "d1arr1val1")
+	arr1 = append(arr1, "d1arr1val2")
+
+	expected := TestBuiltin{
+		String1:    "d2str1val1",
+		LeaveEmpty: "",
+		Array1:     arr1,
+		Map1: map[string]string{
+			"key0": "d1map1val0",
+			"key1": "d2map1val1",
+			"key2": "d2map1val2",
+		},
+		Int1:   222,
+		Float1: 2.22,
+		// note this will be true from d1/figtree.yml since the
+		// d1/d2/figtree.yml set it to false which is a zero value
+		Bool1: true,
+	}
+
+	err := LoadAllConfigs("figtree.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestBuiltinLoadConfigD1(t *testing.T) {
+	opts := TestBuiltin{}
+	os.Chdir("d1")
+	defer os.Chdir("..")
+
+	arr1 := []string{}
+	arr1 = append(arr1, "d1arr1val1")
+	arr1 = append(arr1, "d1arr1val2")
+
+	expected := TestBuiltin{
+		String1:    "d1str1val1",
+		LeaveEmpty: "",
+		Array1:     arr1,
+		Map1: map[string]string{
+			"key0": "d1map1val0",
+			"key1": "d1map1val1",
+		},
+		Int1:   111,
+		Float1: 1.11,
+		Bool1:  true,
+	}
+
+	err := LoadAllConfigs("figtree.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}

vendor/github.com/coryb/figtree/glide.lock

@@ -0,0 +1,36 @@
+hash: 4c141f4247c76717823951388fcd50678e63195fa40b0d5bc7097d0267003052
+updated: 2017-07-06T23:09:17.970073816-07:00
+imports:
+- name: github.com/cheekybits/genny
+  version: 9127e812e1e9e501ce899a18121d316ecb52e4ba
+  subpackages:
+  - generic
+- name: github.com/fatih/camelcase
+  version: f6a740d52f961c60348ebb109adde9f4635d7540
+- name: github.com/pkg/errors
+  version: 645ef00459ed84a119197bfb8d8205042c6df63d
+- name: gopkg.in/coryb/yaml.v2
+  version: f284bc8aa3c31dfdda9cc7917c610398c49b3acd
+- name: gopkg.in/op/go-logging.v1
+  version: b2cb9fa56473e98db8caba80237377e83fe44db5
+testImports:
+- name: github.com/alecthomas/template
+  version: a0175ee3bccc567396460bf5acd36800cb10c49c
+  subpackages:
+  - parse
+- name: github.com/alecthomas/units
+  version: 2efee857e7cfd4f3d0138cc3cbb1b4966962b93a
+- name: github.com/davecgh/go-spew
+  version: 6d212800a42e8ab5c146b8ace3490ee17e5225f9
+  subpackages:
+  - spew
+- name: github.com/pmezard/go-difflib
+  version: d8ed2627bdf02c080bf22230dbb337003b7aba2d
+  subpackages:
+  - difflib
+- name: github.com/stretchr/testify
+  version: 69483b4bd14f5845b5a1e55bca19e954e827f1d0
+  subpackages:
+  - assert
+- name: gopkg.in/alecthomas/kingpin.v2
+  version: 7f0871f2e17818990e4eed73f9b5c2f429501228

vendor/github.com/coryb/figtree/glide.yaml

@@ -0,0 +1,18 @@
+package: github.com/coryb/figtree
+import:
+- package: github.com/cheekybits/genny
+  subpackages:
+  - generic
+- package: github.com/pkg/errors
+  version: ^0.8.0
+- package: gopkg.in/coryb/yaml.v2
+- package: gopkg.in/op/go-logging.v1
+  version: ^1.0.0
+- package: github.com/fatih/camelcase
+testImport:
+- package: github.com/stretchr/testify
+  version: ^1.1.4
+  subpackages:
+  - assert
+- package: gopkg.in/alecthomas/kingpin.v2
+  version: ^2.2.4

vendor/github.com/coryb/figtree/kingpin_test.go

@@ -0,0 +1,59 @@
+package figtree
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	kingpin "gopkg.in/alecthomas/kingpin.v2"
+)
+
+func TestCommandLine(t *testing.T) {
+	type CommandLineOptions struct {
+		Str1 StringOption     `yaml:"str1,omitempty"`
+		Int1 IntOption        `yaml:"int1,omitempty"`
+		Map1 MapStringOption  `yaml:"map1,omitempty"`
+		Arr1 ListStringOption `yaml:"arr1,omitempty"`
+	}
+
+	opts := CommandLineOptions{}
+	os.Chdir("d1/d2/d3")
+	defer os.Chdir("../../..")
+
+	err := LoadAllConfigs("figtree.yml", &opts)
+	assert.Nil(t, err)
+
+	app := kingpin.New("test", "testing")
+	app.Flag("str1", "Str1").SetValue(&opts.Str1)
+	app.Flag("int1", "Int1").SetValue(&opts.Int1)
+	app.Flag("map1", "Map1").SetValue(&opts.Map1)
+	app.Flag("arr1", "Arr1").SetValue(&opts.Arr1)
+	_, err = app.Parse([]string{"--int1", "999", "--map1", "k1=v1", "--map1", "k2=v2", "--arr1", "v1", "--arr1", "v2"})
+	assert.Nil(t, err)
+
+	arr1 := ListStringOption{}
+	arr1 = append(arr1, StringOption{"figtree.yml", true, "d3arr1val1"})
+	arr1 = append(arr1, StringOption{"figtree.yml", true, "d3arr1val2"})
+	arr1 = append(arr1, StringOption{"../figtree.yml", true, "d2arr1val1"})
+	arr1 = append(arr1, StringOption{"../figtree.yml", true, "d2arr1val2"})
+	arr1 = append(arr1, StringOption{"../../figtree.yml", true, "d1arr1val1"})
+	arr1 = append(arr1, StringOption{"../../figtree.yml", true, "d1arr1val2"})
+	arr1 = append(arr1, StringOption{"override", true, "v1"})
+	arr1 = append(arr1, StringOption{"override", true, "v2"})
+
+	expected := CommandLineOptions{
+		Str1: StringOption{"figtree.yml", true, "d3str1val1"},
+		Int1: IntOption{"override", true, 999},
+		Map1: map[string]StringOption{
+			"key0": StringOption{"../../figtree.yml", true, "d1map1val0"},
+			"key1": StringOption{"../figtree.yml", true, "d2map1val1"},
+			"key2": StringOption{"figtree.yml", true, "d3map1val2"},
+			"key3": StringOption{"figtree.yml", true, "d3map1val3"},
+			"k1":   StringOption{"override", true, "v1"},
+			"k2":   StringOption{"override", true, "v2"},
+		},
+		Arr1: arr1,
+	}
+
+	assert.Equal(t, expected, opts)
+}

vendor/github.com/coryb/figtree/marshal_test.go

@@ -0,0 +1,65 @@
+package figtree
+
+import (
+	"encoding/json"
+	"os"
+	"testing"
+
+	yaml "gopkg.in/coryb/yaml.v2"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestOptionsMarshalYAML(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1/d2/d3")
+	defer os.Chdir("../../..")
+	err := LoadAllConfigs("figtree.yml", &opts)
+	assert.Nil(t, err)
+
+	StringifyValue = true
+	defer func() {
+		StringifyValue = false
+	}()
+	got, err := yaml.Marshal(&opts)
+	assert.Nil(t, err)
+
+	expected := `str1: d3str1val1
+arr1:
+- d3arr1val1
+- d3arr1val2
+- d2arr1val1
+- d2arr1val2
+- d1arr1val1
+- d1arr1val2
+map1:
+  key0: d1map1val0
+  key1: d2map1val1
+  key2: d3map1val2
+  key3: d3map1val3
+int1: 333
+float1: 3.33
+bool1: true
+`
+	assert.Equal(t, expected, string(got))
+}
+
+func TestOptionsMarshalJSON(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1/d2/d3")
+	defer os.Chdir("../../..")
+	err := LoadAllConfigs("figtree.yml", &opts)
+	assert.Nil(t, err)
+
+	StringifyValue = true
+	defer func() {
+		StringifyValue = false
+	}()
+	got, err := json.Marshal(&opts)
+	assert.Nil(t, err)
+	// note that "leave-empty" is serialized even though "omitempty" tag is set
+	// this is because json always assumes structs are not empty and there
+	// is no interface to override this behavior
+	expected := `{"str1":"d3str1val1","leave-empty":"","arr1":["d3arr1val1","d3arr1val2","d2arr1val1","d2arr1val2","d1arr1val1","d1arr1val2"],"map1":{"key0":"d1map1val0","key1":"d2map1val1","key2":"d3map1val2","key3":"d3map1val3"},"int1":333,"float1":3.33,"bool1":true}`
+	assert.Equal(t, expected, string(got))
+}

vendor/github.com/coryb/figtree/option.go

@@ -0,0 +1,21 @@
+package figtree
+
+import "regexp"
+
+type Option interface {
+	IsDefined() bool
+	GetValue() interface{}
+	SetValue(interface{}) error
+	SetSource(string)
+}
+
+var StringifyValue = true
+
+// used in option parsing for map types Set routines
+var stringMapRegex = regexp.MustCompile("[:=]")
+
+// IsBoolFlag is required by kingpin interface to determine if
+// this variable requires a value
+func (b BoolOption) IsBoolFlag() bool {
+	return true
+}

vendor/github.com/coryb/figtree/overwrite_test.go

@@ -0,0 +1,130 @@
+package figtree
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func init() {
+	StringifyValue = false
+}
+
+func TestOptionsOverwriteConfigD3(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1/d2/d3")
+	defer os.Chdir("../../..")
+
+	arr1 := []StringOption{}
+	arr1 = append(arr1, StringOption{"../overwrite.yml", true, "d2arr1val1"})
+	arr1 = append(arr1, StringOption{"../overwrite.yml", true, "d2arr1val2"})
+	arr1 = append(arr1, StringOption{"../../overwrite.yml", true, "d1arr1val1"})
+	arr1 = append(arr1, StringOption{"../../overwrite.yml", true, "d1arr1val2"})
+
+	expected := TestOptions{
+		String1:    StringOption{"../overwrite.yml", true, "d2str1val1"},
+		LeaveEmpty: StringOption{},
+		Array1:     arr1,
+		Map1: map[string]StringOption{
+			"key0": StringOption{"../../overwrite.yml", true, "d1map1val0"},
+			"key1": StringOption{"../../overwrite.yml", true, "d1map1val1"},
+		},
+		Int1:   IntOption{"../../overwrite.yml", true, 111},
+		Float1: Float32Option{"../../overwrite.yml", true, 1.11},
+		Bool1:  BoolOption{"../overwrite.yml", true, false},
+	}
+
+	err := LoadAllConfigs("overwrite.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestOptionsOverwriteConfigD2(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1/d2")
+	defer os.Chdir("../..")
+
+	arr1 := []StringOption{}
+	arr1 = append(arr1, StringOption{"overwrite.yml", true, "d2arr1val1"})
+	arr1 = append(arr1, StringOption{"overwrite.yml", true, "d2arr1val2"})
+	arr1 = append(arr1, StringOption{"../overwrite.yml", true, "d1arr1val1"})
+	arr1 = append(arr1, StringOption{"../overwrite.yml", true, "d1arr1val2"})
+
+	expected := TestOptions{
+		String1:    StringOption{"overwrite.yml", true, "d2str1val1"},
+		LeaveEmpty: StringOption{},
+		Array1:     arr1,
+		Map1: map[string]StringOption{
+			"key0": StringOption{"../overwrite.yml", true, "d1map1val0"},
+			"key1": StringOption{"../overwrite.yml", true, "d1map1val1"},
+		},
+		Int1:   IntOption{"../overwrite.yml", true, 111},
+		Float1: Float32Option{"../overwrite.yml", true, 1.11},
+		Bool1:  BoolOption{"overwrite.yml", true, false},
+	}
+
+	err := LoadAllConfigs("overwrite.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestBuiltinOverwriteConfigD3(t *testing.T) {
+	opts := TestBuiltin{}
+	os.Chdir("d1/d2/d3")
+	defer os.Chdir("../../..")
+
+	arr1 := []string{}
+	arr1 = append(arr1, "d2arr1val1")
+	arr1 = append(arr1, "d2arr1val2")
+	arr1 = append(arr1, "d1arr1val1")
+	arr1 = append(arr1, "d1arr1val2")
+
+	expected := TestBuiltin{
+		String1:    "d2str1val1",
+		LeaveEmpty: "",
+		Array1:     arr1,
+		Map1: map[string]string{
+			"key0": "d1map1val0",
+			"key1": "d1map1val1",
+		},
+		Int1:   111,
+		Float1: 1.11,
+		Bool1:  true,
+	}
+
+	err := LoadAllConfigs("overwrite.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestBuiltinOverwriteConfigD2(t *testing.T) {
+	opts := TestBuiltin{}
+	os.Chdir("d1/d2")
+	defer os.Chdir("../..")
+
+	arr1 := []string{}
+	arr1 = append(arr1, "d2arr1val1")
+	arr1 = append(arr1, "d2arr1val2")
+	arr1 = append(arr1, "d1arr1val1")
+	arr1 = append(arr1, "d1arr1val2")
+
+	expected := TestBuiltin{
+		String1:    "d2str1val1",
+		LeaveEmpty: "",
+		Array1:     arr1,
+		Map1: map[string]string{
+			"key0": "d1map1val0",
+			"key1": "d1map1val1",
+		},
+		Int1:   111,
+		Float1: 1.11,
+		// note this will be true from d1/overwrite.yml since the
+		// d1/d2/overwrite.yml set it to false which is a zero value
+		Bool1: true,
+	}
+
+	err := LoadAllConfigs("overwrite.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}

vendor/github.com/coryb/figtree/rawoption.go

@@ -0,0 +1,231 @@
+//go:generate genny -in=$GOFILE -out=gen-$GOFILE gen "RawType=BUILTINS"
+
+package figtree
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/cheekybits/genny/generic"
+)
+
+type RawType generic.Type
+
+type RawTypeOption struct {
+	Source  string
+	Defined bool
+	Value   RawType
+}
+
+func NewRawTypeOption(dflt RawType) RawTypeOption {
+	return RawTypeOption{
+		Source:  "default",
+		Defined: true,
+		Value:   dflt,
+	}
+}
+
+func (o RawTypeOption) IsDefined() bool {
+	return o.Defined
+}
+
+func (o *RawTypeOption) SetSource(source string) {
+	o.Source = source
+}
+
+func (o RawTypeOption) GetValue() interface{} {
+	return o.Value
+}
+
+// This is useful with kingpin option parser
+func (o *RawTypeOption) Set(s string) error {
+	err := convertString(s, &o.Value)
+	if err != nil {
+		return err
+	}
+	o.Source = "override"
+	o.Defined = true
+	return nil
+}
+
+// This is useful with survey prompting library
+func (o *RawTypeOption) WriteAnswer(name string, value interface{}) error {
+	if v, ok := value.(RawType); ok {
+		o.Value = v
+		o.Defined = true
+		o.Source = "prompt"
+		return nil
+	}
+	return fmt.Errorf("Got %T expected %T type: %v", value, o.Value, value)
+}
+
+func (o *RawTypeOption) SetValue(v interface{}) error {
+	if val, ok := v.(RawType); ok {
+		o.Value = val
+		o.Defined = true
+		return nil
+	}
+	return fmt.Errorf("Got %T expected %T type: %v", v, o.Value, v)
+}
+
+func (o *RawTypeOption) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	if err := unmarshal(&o.Value); err != nil {
+		return err
+	}
+	o.Defined = true
+	return nil
+}
+
+func (o *RawTypeOption) UnmarshalJSON(b []byte) error {
+	if err := json.Unmarshal(b, &o.Value); err != nil {
+		return err
+	}
+	o.Defined = true
+	return nil
+}
+
+func (o RawTypeOption) MarshalYAML() (interface{}, error) {
+	if StringifyValue {
+		return o.Value, nil
+	}
+	// need a copy of this struct without the MarshalYAML interface attached
+	return struct {
+		Value   RawType
+		Source  string
+		Defined bool
+	}{
+		Value:   o.Value,
+		Source:  o.Source,
+		Defined: o.Defined,
+	}, nil
+}
+
+func (o RawTypeOption) MarshalJSON() ([]byte, error) {
+	if StringifyValue {
+		return json.Marshal(o.Value)
+	}
+	// need a copy of this struct without the MarshalJSON interface attached
+	return json.Marshal(struct {
+		Value   RawType
+		Source  string
+		Defined bool
+	}{
+		Value:   o.Value,
+		Source:  o.Source,
+		Defined: o.Defined,
+	})
+}
+
+// String is required for kingpin to generate usage with this datatype
+func (o RawTypeOption) String() string {
+	if StringifyValue {
+		return fmt.Sprintf("%v", o.Value)
+	}
+	return fmt.Sprintf("{Source:%s Defined:%t Value:%v}", o.Source, o.Defined, o.Value)
+}
+
+type MapRawTypeOption map[string]RawTypeOption
+
+// Set is required for kingpin interfaces to allow command line params
+// to be set to our map datatype
+func (o *MapRawTypeOption) Set(value string) error {
+	parts := stringMapRegex.Split(value, 2)
+	if len(parts) != 2 {
+		return fmt.Errorf("expected KEY=VALUE got '%s'", value)
+	}
+	val := RawTypeOption{}
+	val.Set(parts[1])
+	(*o)[parts[0]] = val
+	return nil
+}
+
+// IsCumulative is required for kingpin interfaces to allow multiple values
+// to be set on the data structure.
+func (o MapRawTypeOption) IsCumulative() bool {
+	return true
+}
+
+// String is required for kingpin to generate usage with this datatype
+func (o MapRawTypeOption) String() string {
+	return fmt.Sprintf("%v", map[string]RawTypeOption(o))
+}
+
+func (o MapRawTypeOption) Map() map[string]RawType {
+	tmp := map[string]RawType{}
+	for k, v := range o {
+		tmp[k] = v.Value
+	}
+	return tmp
+}
+
+// This is useful with survey prompting library
+func (o *MapRawTypeOption) WriteAnswer(name string, value interface{}) error {
+	tmp := RawTypeOption{}
+	if v, ok := value.(RawType); ok {
+		tmp.Value = v
+		tmp.Defined = true
+		tmp.Source = "prompt"
+		(*o)[name] = tmp
+		return nil
+	}
+	return fmt.Errorf("Got %T expected %T type: %v", value, tmp.Value, value)
+}
+
+func (o MapRawTypeOption) IsDefined() bool {
+	// true if the map has any keys
+	if len(o) > 0 {
+		return true
+	}
+	return false
+}
+
+type ListRawTypeOption []RawTypeOption
+
+// Set is required for kingpin interfaces to allow command line params
+// to be set to our map datatype
+func (o *ListRawTypeOption) Set(value string) error {
+	val := RawTypeOption{}
+	val.Set(value)
+	*o = append(*o, val)
+	return nil
+}
+
+// This is useful with survey prompting library
+func (o *ListRawTypeOption) WriteAnswer(name string, value interface{}) error {
+	tmp := RawTypeOption{}
+	if v, ok := value.(RawType); ok {
+		tmp.Value = v
+		tmp.Defined = true
+		tmp.Source = "prompt"
+		*o = append(*o, tmp)
+		return nil
+	}
+	return fmt.Errorf("Got %T expected %T type: %v", value, tmp.Value, value)
+}
+
+// IsCumulative is required for kingpin interfaces to allow multiple values
+// to be set on the data structure.
+func (o ListRawTypeOption) IsCumulative() bool {
+	return true
+}
+
+// String is required for kingpin to generate usage with this datatype
+func (o ListRawTypeOption) String() string {
+	return fmt.Sprintf("%v", []RawTypeOption(o))
+}
+
+func (o ListRawTypeOption) Slice() []RawType {
+	tmp := []RawType{}
+	for _, elem := range o {
+		tmp = append(tmp, elem.Value)
+	}
+	return tmp
+}
+
+func (o ListRawTypeOption) IsDefined() bool {
+	// true if the list is not empty
+	if len(o) > 0 {
+		return true
+	}
+	return false
+}

vendor/github.com/coryb/figtree/rawoption_test.go

@@ -0,0 +1,74 @@
+package figtree
+
+import (
+	"encoding/json"
+	"testing"
+
+	yaml "gopkg.in/coryb/yaml.v2"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestOptionInterface(t *testing.T) {
+	f := func(_ Option) bool {
+		return true
+	}
+
+	assert.True(t, f(&BoolOption{}))
+	assert.True(t, f(&ByteOption{}))
+	assert.True(t, f(&Complex128Option{}))
+	assert.True(t, f(&Complex64Option{}))
+	assert.True(t, f(&ErrorOption{}))
+	assert.True(t, f(&Float32Option{}))
+	assert.True(t, f(&Float64Option{}))
+	assert.True(t, f(&IntOption{}))
+	assert.True(t, f(&Int16Option{}))
+	assert.True(t, f(&Int32Option{}))
+	assert.True(t, f(&Int64Option{}))
+	assert.True(t, f(&Int8Option{}))
+	assert.True(t, f(&RuneOption{}))
+	assert.True(t, f(&StringOption{}))
+	assert.True(t, f(&UintOption{}))
+	assert.True(t, f(&Uint16Option{}))
+	assert.True(t, f(&Uint32Option{}))
+	assert.True(t, f(&Uint64Option{}))
+	assert.True(t, f(&Uint8Option{}))
+	assert.True(t, f(&UintptrOption{}))
+}
+
+func TestStringOptionYAML(t *testing.T) {
+	s := ""
+	err := yaml.Unmarshal([]byte(`""`), &s)
+	assert.Nil(t, err)
+	assert.Equal(t, s, "")
+
+	type testType struct {
+		String StringOption `yaml:"string,omitempty"`
+	}
+	tt := testType{}
+
+	err = yaml.Unmarshal([]byte(`string: ""`), &tt)
+	assert.Nil(t, err)
+	assert.Equal(t, tt.String, StringOption{Value: "", Defined: true})
+
+	tt = testType{}
+	err = yaml.Unmarshal([]byte(`string: "value"`), &tt)
+	assert.Nil(t, err)
+	assert.Equal(t, tt.String, StringOption{Value: "value", Defined: true})
+}
+
+func TestStringOptionJSON(t *testing.T) {
+	type testType struct {
+		String StringOption `json:"string,omitempty"`
+	}
+	tt := testType{}
+
+	err := json.Unmarshal([]byte(`{"string": ""}`), &tt)
+	assert.Nil(t, err)
+	assert.Equal(t, tt.String, StringOption{Value: "", Defined: true})
+
+	tt = testType{}
+	err = json.Unmarshal([]byte(`{"string": "value"}`), &tt)
+	assert.Nil(t, err)
+	assert.Equal(t, tt.String, StringOption{Value: "value", Defined: true})
+}

vendor/github.com/coryb/figtree/stop_test.go

@@ -0,0 +1,122 @@
+package figtree
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestOptionsStopConfigD3(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1/d2/d3")
+	defer os.Chdir("../../..")
+
+	arr1 := []StringOption{}
+	arr1 = append(arr1, StringOption{"stop.yml", true, "d3arr1val1"})
+	arr1 = append(arr1, StringOption{"stop.yml", true, "d3arr1val2"})
+	arr1 = append(arr1, StringOption{"../stop.yml", true, "d2arr1val1"})
+	arr1 = append(arr1, StringOption{"../stop.yml", true, "d2arr1val2"})
+
+	expected := TestOptions{
+		String1:    StringOption{"stop.yml", true, "d3str1val1"},
+		LeaveEmpty: StringOption{},
+		Array1:     arr1,
+		Map1: map[string]StringOption{
+			"key1": StringOption{"../stop.yml", true, "d2map1val1"},
+			"key2": StringOption{"stop.yml", true, "d3map1val2"},
+			"key3": StringOption{"stop.yml", true, "d3map1val3"},
+		},
+		Int1:   IntOption{"stop.yml", true, 333},
+		Float1: Float32Option{"stop.yml", true, 3.33},
+		Bool1:  BoolOption{"stop.yml", true, true},
+	}
+
+	err := LoadAllConfigs("stop.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestOptionsStopConfigD2(t *testing.T) {
+	opts := TestOptions{}
+	os.Chdir("d1/d2")
+	defer os.Chdir("../..")
+
+	arr1 := []StringOption{}
+	arr1 = append(arr1, StringOption{"stop.yml", true, "d2arr1val1"})
+	arr1 = append(arr1, StringOption{"stop.yml", true, "d2arr1val2"})
+
+	expected := TestOptions{
+		String1:    StringOption{"stop.yml", true, "d2str1val1"},
+		LeaveEmpty: StringOption{},
+		Array1:     arr1,
+		Map1: map[string]StringOption{
+			"key1": StringOption{"stop.yml", true, "d2map1val1"},
+			"key2": StringOption{"stop.yml", true, "d2map1val2"},
+		},
+		Int1:   IntOption{"stop.yml", true, 222},
+		Float1: Float32Option{"stop.yml", true, 2.22},
+		Bool1:  BoolOption{"stop.yml", true, false},
+	}
+
+	err := LoadAllConfigs("stop.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestBuiltinStopConfigD3(t *testing.T) {
+	opts := TestBuiltin{}
+	os.Chdir("d1/d2/d3")
+	defer os.Chdir("../../..")
+
+	arr1 := []string{}
+	arr1 = append(arr1, "d3arr1val1")
+	arr1 = append(arr1, "d3arr1val2")
+	arr1 = append(arr1, "d2arr1val1")
+	arr1 = append(arr1, "d2arr1val2")
+
+	expected := TestBuiltin{
+		String1:    "d3str1val1",
+		LeaveEmpty: "",
+		Array1:     arr1,
+		Map1: map[string]string{
+			"key1": "d2map1val1",
+			"key2": "d3map1val2",
+			"key3": "d3map1val3",
+		},
+		Int1:   333,
+		Float1: 3.33,
+		Bool1:  true,
+	}
+
+	err := LoadAllConfigs("stop.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}
+
+func TestBuiltinStopConfigD2(t *testing.T) {
+	opts := TestBuiltin{}
+	os.Chdir("d1/d2")
+	defer os.Chdir("../..")
+
+	arr1 := []string{}
+	arr1 = append(arr1, "d2arr1val1")
+	arr1 = append(arr1, "d2arr1val2")
+
+	expected := TestBuiltin{
+		String1:    "d2str1val1",
+		LeaveEmpty: "",
+		Array1:     arr1,
+		Map1: map[string]string{
+			"key1": "d2map1val1",
+			"key2": "d2map1val2",
+		},
+		Int1:   222,
+		Float1: 2.22,
+		Bool1:  false,
+	}
+
+	err := LoadAllConfigs("stop.yml", &opts)
+	assert.Nil(t, err)
+	assert.Exactly(t, expected, opts)
+}

vendor/github.com/coryb/figtree/utils.go

@@ -0,0 +1,45 @@
+package figtree
+
+import (
+	"os"
+	"path"
+	"path/filepath"
+	"runtime"
+	"strings"
+)
+
+func homedir() string {
+	if runtime.GOOS == "windows" {
+		return os.Getenv("USERPROFILE")
+	}
+	return os.Getenv("HOME")
+}
+
+func FindParentPaths(fileName string) []string {
+	cwd, _ := os.Getwd()
+
+	paths := make([]string, 0)
+
+	// special case if homedir is not in current path then check there anyway
+	homedir := homedir()
+	if !strings.HasPrefix(cwd, homedir) {
+		file := path.Join(homedir, fileName)
+		if _, err := os.Stat(file); err == nil {
+			paths = append(paths, filepath.FromSlash(file))
+		}
+	}
+
+	var dir string
+	for _, part := range strings.Split(cwd, string(os.PathSeparator)) {
+		if part == "" && dir == "" {
+			dir = "/"
+		} else {
+			dir = path.Join(dir, part)
+		}
+		file := path.Join(dir, fileName)
+		if _, err := os.Stat(file); err == nil {
+			paths = append(paths, filepath.FromSlash(file))
+		}
+	}
+	return paths
+}