Compare revisions

        ];

        #vendorHash = pkgs.lib.fakeHash;

        vendorHash = goPkgVendorHash;

        vendorHash = null; #goPkgVendorHash;

        meta = with nixpkgs.legacyPackages.${system}.lib; {

          description = goPkgDescription;

module gitlab.schukai.com/oss/utilities/requirements-manager

go 1.18

go 1.23.3

require (

	github.com/go-git/go-git/v5 v5.11.0

	github.com/go-git/go-git/v5 v5.13.1

	github.com/gookit/color v1.5.4

	github.com/jessevdk/go-flags v1.5.0

	github.com/jessevdk/go-flags v1.6.1

	github.com/olekukonko/tablewriter v0.0.5

	github.com/xanzy/go-gitlab v0.100.0

	golang.org/x/text v0.14.0

	github.com/xanzy/go-gitlab v0.115.0

	golang.org/x/text v0.21.0

	gopkg.in/yaml.v2 v2.4.0

	gopkg.in/yaml.v3 v3.0.1

)

require (

	dario.cat/mergo v1.0.0 // indirect

	github.com/Microsoft/go-winio v0.6.1 // indirect

	github.com/ProtonMail/go-crypto v1.0.0 // indirect

	github.com/acomagu/bufpipe v1.0.4 // indirect

	github.com/cloudflare/circl v1.3.7 // indirect

	github.com/cyphar/filepath-securejoin v0.2.4 // indirect

	github.com/davecgh/go-spew v1.1.1 // indirect

	dario.cat/mergo v1.0.1 // indirect

	github.com/Microsoft/go-winio v0.6.2 // indirect

	github.com/ProtonMail/go-crypto v1.1.4 // indirect

	github.com/cloudflare/circl v1.5.0 // indirect

	github.com/cyphar/filepath-securejoin v0.3.6 // indirect

	github.com/emirpasic/gods v1.18.1 // indirect

	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect

	github.com/go-git/go-billy/v5 v5.5.0 // indirect

	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect

	github.com/golang/protobuf v1.5.4 // indirect

	github.com/go-git/go-billy/v5 v5.6.1 // indirect

	github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 // indirect

	github.com/google/go-querystring v1.1.0 // indirect

	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect

	github.com/hashicorp/go-retryablehttp v0.7.5 // indirect

	github.com/imdario/mergo v0.3.16 // indirect

	github.com/hashicorp/go-retryablehttp v0.7.7 // indirect

	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect

	github.com/kevinburke/ssh_config v1.2.0 // indirect

	github.com/kr/pretty v0.3.1 // indirect

	github.com/mattn/go-runewidth v0.0.15 // indirect

	github.com/mitchellh/go-homedir v1.1.0 // indirect

	github.com/pjbgf/sha1cd v0.3.0 // indirect

	github.com/mattn/go-runewidth v0.0.16 // indirect

	github.com/mmcloughlin/avo v0.6.0 // indirect

	github.com/pjbgf/sha1cd v0.3.1 // indirect

	github.com/rivo/uniseg v0.4.7 // indirect

	github.com/sergi/go-diff v1.3.1 // indirect

	github.com/skeema/knownhosts v1.2.2 // indirect

	github.com/src-d/gcfg v1.4.0 // indirect

	github.com/sergi/go-diff v1.3.2-0.20230802210424-5b0b94c5c0d3 // indirect

	github.com/skeema/knownhosts v1.3.0 // indirect

	github.com/xanzy/ssh-agent v0.3.3 // indirect

	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect

	golang.org/x/crypto v0.21.0 // indirect

	golang.org/x/mod v0.16.0 // indirect

	golang.org/x/net v0.22.0 // indirect

	golang.org/x/oauth2 v0.18.0 // indirect

	golang.org/x/sys v0.18.0 // indirect

	golang.org/x/time v0.5.0 // indirect

	golang.org/x/tools v0.19.0 // indirect

	google.golang.org/appengine v1.6.8 // indirect

	google.golang.org/protobuf v1.33.0 // indirect

	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect

	gopkg.in/src-d/go-billy.v4 v4.3.2 // indirect

	golang.org/x/crypto v0.32.0 // indirect

	golang.org/x/mod v0.22.0 // indirect

	golang.org/x/net v0.34.0 // indirect

	golang.org/x/oauth2 v0.25.0 // indirect

	golang.org/x/sync v0.10.0 // indirect

	golang.org/x/sys v0.29.0 // indirect

	golang.org/x/time v0.9.0 // indirect

	golang.org/x/tools v0.29.0 // indirect

	gopkg.in/warnings.v0 v0.1.2 // indirect

)

version = 1

test_patterns = [

  "*_test.go"

]

[[analyzers]]

name = "go"

enabled = true

  [analyzers.meta]

  import_path = "dario.cat/mergo"

 No newline at end of file

#### joe made this: http://goel.io/joe

#### go ####

# Binaries for programs and plugins

*.exe

*.dll

*.so

*.dylib

# Test binary, build with `go test -c`

*.test

# Output of the go coverage tool, specifically when used with LiteIDE

*.out

# Golang/Intellij

.idea

# Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736

.glide/

#### vim ####

# Swap

[._]*.s[a-v][a-z]

[._]*.sw[a-p]

[._]s[a-v][a-z]

[._]sw[a-p]

# Session

Session.vim

# Temporary

.netrwhist

*~

# Auto-generated tag files

tags

language: go

arch:

    - amd64

    - ppc64le

install:

  - go get -t

  - go get golang.org/x/tools/cmd/cover

  - go get github.com/mattn/goveralls

script:

  - go test -race -v ./...

after_script:

  - $HOME/gopath/bin/goveralls -service=travis-ci -repotoken $COVERALLS_TOKEN

# Contributor Covenant Code of Conduct

## Our Pledge

In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.

## Our Standards

Examples of behavior that contributes to creating a positive environment include:

* Using welcoming and inclusive language

* Being respectful of differing viewpoints and experiences

* Gracefully accepting constructive criticism

* Focusing on what is best for the community

* Showing empathy towards other community members

Examples of unacceptable behavior by participants include:

* The use of sexualized language or imagery and unwelcome sexual attention or advances

* Trolling, insulting/derogatory comments, and personal or political attacks

* Public or private harassment

* Publishing others' private information, such as a physical or electronic address, without explicit permission

* Other conduct which could reasonably be considered inappropriate in a professional setting

## Our Responsibilities

Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.

Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.

## Scope

This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community. Examples of representing a project or community include using an official project e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event. Representation of a project may be further defined and clarified by project maintainers.

## Enforcement

Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at i@dario.im. The project team will review and investigate all complaints, and will respond in a way that it deems appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.

Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project's leadership.

## Attribution

This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, available at [http://contributor-covenant.org/version/1/4][version]

[homepage]: http://contributor-covenant.org

[version]: http://contributor-covenant.org/version/1/4/

<!-- omit in toc -->

# Contributing to mergo

First off, thanks for taking the time to contribute! ❤️

All types of contributions are encouraged and valued. See the [Table of Contents](#table-of-contents) for different ways to help and details about how this project handles them. Please make sure to read the relevant section before making your contribution. It will make it a lot easier for us maintainers and smooth out the experience for all involved. The community looks forward to your contributions. 🎉

> And if you like the project, but just don't have time to contribute, that's fine. There are other easy ways to support the project and show your appreciation, which we would also be very happy about:

> - Star the project

> - Tweet about it

> - Refer this project in your project's readme

> - Mention the project at local meetups and tell your friends/colleagues

<!-- omit in toc -->

## Table of Contents

- [Code of Conduct](#code-of-conduct)

- [I Have a Question](#i-have-a-question)

- [I Want To Contribute](#i-want-to-contribute)

- [Reporting Bugs](#reporting-bugs)

- [Suggesting Enhancements](#suggesting-enhancements)

## Code of Conduct

This project and everyone participating in it is governed by the

[mergo Code of Conduct](https://github.com/imdario/mergoblob/master/CODE_OF_CONDUCT.md).

By participating, you are expected to uphold this code. Please report unacceptable behavior

to <>.

## I Have a Question

> If you want to ask a question, we assume that you have read the available [Documentation](https://pkg.go.dev/github.com/imdario/mergo).

Before you ask a question, it is best to search for existing [Issues](https://github.com/imdario/mergo/issues) that might help you. In case you have found a suitable issue and still need clarification, you can write your question in this issue. It is also advisable to search the internet for answers first.

If you then still feel the need to ask a question and need clarification, we recommend the following:

- Open an [Issue](https://github.com/imdario/mergo/issues/new).

- Provide as much context as you can about what you're running into.

- Provide project and platform versions (nodejs, npm, etc), depending on what seems relevant.

We will then take care of the issue as soon as possible.

## I Want To Contribute

> ### Legal Notice <!-- omit in toc -->

> When contributing to this project, you must agree that you have authored 100% of the content, that you have the necessary rights to the content and that the content you contribute may be provided under the project license.

### Reporting Bugs

<!-- omit in toc -->

#### Before Submitting a Bug Report

A good bug report shouldn't leave others needing to chase you up for more information. Therefore, we ask you to investigate carefully, collect information and describe the issue in detail in your report. Please complete the following steps in advance to help us fix any potential bug as fast as possible.

- Make sure that you are using the latest version.

- Determine if your bug is really a bug and not an error on your side e.g. using incompatible environment components/versions (Make sure that you have read the [documentation](). If you are looking for support, you might want to check [this section](#i-have-a-question)).

- To see if other users have experienced (and potentially already solved) the same issue you are having, check if there is not already a bug report existing for your bug or error in the [bug tracker](https://github.com/imdario/mergoissues?q=label%3Abug).

- Also make sure to search the internet (including Stack Overflow) to see if users outside of the GitHub community have discussed the issue.

- Collect information about the bug:

- Stack trace (Traceback)

- OS, Platform and Version (Windows, Linux, macOS, x86, ARM)

- Version of the interpreter, compiler, SDK, runtime environment, package manager, depending on what seems relevant.

- Possibly your input and the output

- Can you reliably reproduce the issue? And can you also reproduce it with older versions?

<!-- omit in toc -->

#### How Do I Submit a Good Bug Report?

> You must never report security related issues, vulnerabilities or bugs including sensitive information to the issue tracker, or elsewhere in public. Instead sensitive bugs must be sent by email to .

<!-- You may add a PGP key to allow the messages to be sent encrypted as well. -->

We use GitHub issues to track bugs and errors. If you run into an issue with the project:

- Open an [Issue](https://github.com/imdario/mergo/issues/new). (Since we can't be sure at this point whether it is a bug or not, we ask you not to talk about a bug yet and not to label the issue.)

- Explain the behavior you would expect and the actual behavior.

- Please provide as much context as possible and describe the *reproduction steps* that someone else can follow to recreate the issue on their own. This usually includes your code. For good bug reports you should isolate the problem and create a reduced test case.

- Provide the information you collected in the previous section.

Once it's filed:

- The project team will label the issue accordingly.

- A team member will try to reproduce the issue with your provided steps. If there are no reproduction steps or no obvious way to reproduce the issue, the team will ask you for those steps and mark the issue as `needs-repro`. Bugs with the `needs-repro` tag will not be addressed until they are reproduced.

- If the team is able to reproduce the issue, it will be marked `needs-fix`, as well as possibly other tags (such as `critical`), and the issue will be left to be implemented by someone.

### Suggesting Enhancements

This section guides you through submitting an enhancement suggestion for mergo, **including completely new features and minor improvements to existing functionality**. Following these guidelines will help maintainers and the community to understand your suggestion and find related suggestions.

<!-- omit in toc -->

#### Before Submitting an Enhancement

- Make sure that you are using the latest version.

- Read the [documentation]() carefully and find out if the functionality is already covered, maybe by an individual configuration.

- Perform a [search](https://github.com/imdario/mergo/issues) to see if the enhancement has already been suggested. If it has, add a comment to the existing issue instead of opening a new one.

- Find out whether your idea fits with the scope and aims of the project. It's up to you to make a strong case to convince the project's developers of the merits of this feature. Keep in mind that we want features that will be useful to the majority of our users and not just a small subset. If you're just targeting a minority of users, consider writing an add-on/plugin library.

<!-- omit in toc -->

#### How Do I Submit a Good Enhancement Suggestion?

Enhancement suggestions are tracked as [GitHub issues](https://github.com/imdario/mergo/issues).

- Use a **clear and descriptive title** for the issue to identify the suggestion.

- Provide a **step-by-step description of the suggested enhancement** in as many details as possible.

- **Describe the current behavior** and **explain which behavior you expected to see instead** and why. At this point you can also tell which alternatives do not work for you.

- You may want to **include screenshots and animated GIFs** which help you demonstrate the steps or point out the part which the suggestion is related to. You can use [this tool](https://www.cockos.com/licecap/) to record GIFs on macOS and Windows, and [this tool](https://github.com/colinkeenan/silentcast) or [this tool](https://github.com/GNOME/byzanz) on Linux. <!-- this should only be included if the project has a GUI -->

- **Explain why this enhancement would be useful** to most mergo users. You may also want to point out the other projects that solved it better and which could serve as inspiration.

<!-- omit in toc -->

## Attribution

This guide is based on the **contributing-gen**. [Make your own](https://github.com/bttger/contributing-gen)!

Copyright (c) 2013 Dario Castañé. All rights reserved.

Copyright (c) 2012 The Go Authors. All rights reserved.

Redistribution and use in source and binary forms, with or without

modification, are permitted provided that the following conditions are

met:

   * Redistributions of source code must retain the above copyright

notice, this list of conditions and the following disclaimer.

   * Redistributions in binary form must reproduce the above

copyright notice, this list of conditions and the following disclaimer

in the documentation and/or other materials provided with the

distribution.

   * Neither the name of Google Inc. nor the names of its

contributors may be used to endorse or promote products derived from

this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# Mergo

[![GitHub release][5]][6]

[![GoCard][7]][8]

[![Test status][1]][2]

[![OpenSSF Scorecard][21]][22]

[![OpenSSF Best Practices][19]][20]

[![Coverage status][9]][10]

[![Sourcegraph][11]][12]

[![FOSSA status][13]][14]

[![GoDoc][3]][4]

[![Become my sponsor][15]][16]

[![Tidelift][17]][18]

[1]: https://github.com/imdario/mergo/workflows/tests/badge.svg?branch=master

[2]: https://github.com/imdario/mergo/actions/workflows/tests.yml

[3]: https://godoc.org/github.com/imdario/mergo?status.svg

[4]: https://godoc.org/github.com/imdario/mergo

[5]: https://img.shields.io/github/release/imdario/mergo.svg

[6]: https://github.com/imdario/mergo/releases

[7]: https://goreportcard.com/badge/imdario/mergo

[8]: https://goreportcard.com/report/github.com/imdario/mergo

[9]: https://coveralls.io/repos/github/imdario/mergo/badge.svg?branch=master

[10]: https://coveralls.io/github/imdario/mergo?branch=master

[11]: https://sourcegraph.com/github.com/imdario/mergo/-/badge.svg

[12]: https://sourcegraph.com/github.com/imdario/mergo?badge

[13]: https://app.fossa.io/api/projects/git%2Bgithub.com%2Fimdario%2Fmergo.svg?type=shield

[14]: https://app.fossa.io/projects/git%2Bgithub.com%2Fimdario%2Fmergo?ref=badge_shield

[15]: https://img.shields.io/github/sponsors/imdario

[16]: https://github.com/sponsors/imdario

[17]: https://tidelift.com/badges/package/go/github.com%2Fimdario%2Fmergo

[18]: https://tidelift.com/subscription/pkg/go-github.com-imdario-mergo

[19]: https://bestpractices.coreinfrastructure.org/projects/7177/badge

[20]: https://bestpractices.coreinfrastructure.org/projects/7177

[21]: https://api.securityscorecards.dev/projects/github.com/imdario/mergo/badge

[22]: https://api.securityscorecards.dev/projects/github.com/imdario/mergo

A helper to merge structs and maps in Golang. Useful for configuration default values, avoiding messy if-statements.

Mergo merges same-type structs and maps by setting default values in zero-value fields. Mergo won't merge unexported (private) fields. It will do recursively any exported one. It also won't merge structs inside maps (because they are not addressable using Go reflection).

Also a lovely [comune](http://en.wikipedia.org/wiki/Mergo) (municipality) in the Province of Ancona in the Italian region of Marche.

## Status

Mergo is stable and frozen, ready for production. Check a short list of the projects using at large scale it [here](https://github.com/imdario/mergo#mergo-in-the-wild).

No new features are accepted. They will be considered for a future v2 that improves the implementation and fixes bugs for corner cases.

### Important notes

#### 1.0.0

In [1.0.0](//github.com/imdario/mergo/releases/tag/1.0.0) Mergo moves to a vanity URL `dario.cat/mergo`. No more v1 versions will be released.

If the vanity URL is causing issues in your project due to a dependency pulling Mergo - it isn't a direct dependency in your project - it is recommended to use [replace](https://github.com/golang/go/wiki/Modules#when-should-i-use-the-replace-directive) to pin the version to the last one with the old import URL:

```

replace github.com/imdario/mergo => github.com/imdario/mergo v0.3.16

```

#### 0.3.9

Please keep in mind that a problematic PR broke [0.3.9](//github.com/imdario/mergo/releases/tag/0.3.9). I reverted it in [0.3.10](//github.com/imdario/mergo/releases/tag/0.3.10), and I consider it stable but not bug-free. Also, this version adds support for go modules.

Keep in mind that in [0.3.2](//github.com/imdario/mergo/releases/tag/0.3.2), Mergo changed `Merge()`and `Map()` signatures to support [transformers](#transformers). I added an optional/variadic argument so that it won't break the existing code.

If you were using Mergo before April 6th, 2015, please check your project works as intended after updating your local copy with ```go get -u dario.cat/mergo```. I apologize for any issue caused by its previous behavior and any future bug that Mergo could cause in existing projects after the change (release 0.2.0).

### Donations

If Mergo is useful to you, consider buying me a coffee, a beer, or making a monthly donation to allow me to keep building great free software. :heart_eyes:

<a href="https://liberapay.com/dario/donate"><img alt="Donate using Liberapay" src="https://liberapay.com/assets/widgets/donate.svg"></a>

<a href='https://github.com/sponsors/imdario' target='_blank'><img alt="Become my sponsor" src="https://img.shields.io/github/sponsors/imdario?style=for-the-badge" /></a>

### Mergo in the wild

Mergo is used by [thousands](https://deps.dev/go/dario.cat%2Fmergo/v1.0.0/dependents) [of](https://deps.dev/go/github.com%2Fimdario%2Fmergo/v0.3.16/dependents) [projects](https://deps.dev/go/github.com%2Fimdario%2Fmergo/v0.3.12), including:

* [containerd/containerd](https://github.com/containerd/containerd)

* [datadog/datadog-agent](https://github.com/datadog/datadog-agent)

* [docker/cli/](https://github.com/docker/cli/)

* [goreleaser/goreleaser](https://github.com/goreleaser/goreleaser)

* [go-micro/go-micro](https://github.com/go-micro/go-micro)

* [grafana/loki](https://github.com/grafana/loki)

* [kubernetes/kubernetes](https://github.com/kubernetes/kubernetes)

* [masterminds/sprig](github.com/Masterminds/sprig)

* [moby/moby](https://github.com/moby/moby)

* [slackhq/nebula](https://github.com/slackhq/nebula)

* [volcano-sh/volcano](https://github.com/volcano-sh/volcano)

## Install

    go get dario.cat/mergo

    // use in your .go code

    import (

        "dario.cat/mergo"

    )

## Usage

You can only merge same-type structs with exported fields initialized as zero value of their type and same-types maps. Mergo won't merge unexported (private) fields but will do recursively any exported one. It won't merge empty structs value as [they are zero values](https://golang.org/ref/spec#The_zero_value) too. Also, maps will be merged recursively except for structs inside maps (because they are not addressable using Go reflection).

```go

if err := mergo.Merge(&dst, src); err != nil {

    // ...

}

```

Also, you can merge overwriting values using the transformer `WithOverride`.

```go

if err := mergo.Merge(&dst, src, mergo.WithOverride); err != nil {

    // ...

}

```

If you need to override pointers, so the source pointer's value is assigned to the destination's pointer, you must use `WithoutDereference`:

```go

package main

import (

	"fmt"

	"dario.cat/mergo"

)

type Foo struct {

	A *string

	B int64

}

func main() {

	first := "first"

	second := "second"

	src := Foo{

		A: &first,

		B: 2,

	}

	dest := Foo{

		A: &second,

		B: 1,

	}

	mergo.Merge(&dest, src, mergo.WithOverride, mergo.WithoutDereference)

}

```

Additionally, you can map a `map[string]interface{}` to a struct (and otherwise, from struct to map), following the same restrictions as in `Merge()`. Keys are capitalized to find each corresponding exported field.

```go

if err := mergo.Map(&dst, srcMap); err != nil {

    // ...

}

```

Warning: if you map a struct to map, it won't do it recursively. Don't expect Mergo to map struct members of your struct as `map[string]interface{}`. They will be just assigned as values.

Here is a nice example:

```go

package main

import (

	"fmt"

	"dario.cat/mergo"

)

type Foo struct {

	A string

	B int64

}

func main() {

	src := Foo{

		A: "one",

		B: 2,

	}

	dest := Foo{

		A: "two",

	}

	mergo.Merge(&dest, src)

	fmt.Println(dest)

	// Will print

	// {two 2}

}

```

Note: if test are failing due missing package, please execute:

    go get gopkg.in/yaml.v3

### Transformers

Transformers allow to merge specific types differently than in the default behavior. In other words, now you can customize how some types are merged. For example, `time.Time` is a struct; it doesn't have zero value but IsZero can return true because it has fields with zero value. How can we merge a non-zero `time.Time`?

```go

package main

import (

	"fmt"

	"dario.cat/mergo"

    "reflect"

    "time"

)

type timeTransformer struct {

}

func (t timeTransformer) Transformer(typ reflect.Type) func(dst, src reflect.Value) error {

	if typ == reflect.TypeOf(time.Time{}) {

		return func(dst, src reflect.Value) error {

			if dst.CanSet() {

				isZero := dst.MethodByName("IsZero")

				result := isZero.Call([]reflect.Value{})

				if result[0].Bool() {

					dst.Set(src)

				}

			}

			return nil

		}

	}

	return nil

}

type Snapshot struct {

	Time time.Time

	// ...

}

func main() {

	src := Snapshot{time.Now()}

	dest := Snapshot{}

	mergo.Merge(&dest, src, mergo.WithTransformers(timeTransformer{}))

	fmt.Println(dest)

	// Will print

	// { 2018-01-12 01:15:00 +0000 UTC m=+0.000000001 }

}

```

## Contact me

If I can help you, you have an idea or you are using Mergo in your projects, don't hesitate to drop me a line (or a pull request): [@im_dario](https://twitter.com/im_dario)

## About

Written by [Dario Castañé](http://dario.im).

## License

[BSD 3-Clause](http://opensource.org/licenses/BSD-3-Clause) license, as [Go language](http://golang.org/LICENSE).

[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fimdario%2Fmergo.svg?type=large)](https://app.fossa.io/projects/git%2Bgithub.com%2Fimdario%2Fmergo?ref=badge_large)

# Security Policy

## Supported Versions

| Version | Supported          |

| ------- | ------------------ |

| 0.3.x   | :white_check_mark: |

| < 0.3   | :x:                |

## Security contact information

To report a security vulnerability, please use the

[Tidelift security contact](https://tidelift.com/security).

Tidelift will coordinate the fix and disclosure.

// Copyright 2013 Dario Castañé. All rights reserved.

// Copyright 2009 The Go Authors. All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

/*

A helper to merge structs and maps in Golang. Useful for configuration default values, avoiding messy if-statements.

Mergo merges same-type structs and maps by setting default values in zero-value fields. Mergo won't merge unexported (private) fields. It will do recursively any exported one. It also won't merge structs inside maps (because they are not addressable using Go reflection).

# Status

It is ready for production use. It is used in several projects by Docker, Google, The Linux Foundation, VMWare, Shopify, etc.

# Important notes

1.0.0

In 1.0.0 Mergo moves to a vanity URL `dario.cat/mergo`.

0.3.9

Please keep in mind that a problematic PR broke 0.3.9. We reverted it in 0.3.10. We consider 0.3.10 as stable but not bug-free. . Also, this version adds suppot for go modules.

Keep in mind that in 0.3.2, Mergo changed Merge() and Map() signatures to support transformers. We added an optional/variadic argument so that it won't break the existing code.

If you were using Mergo before April 6th, 2015, please check your project works as intended after updating your local copy with go get -u dario.cat/mergo. I apologize for any issue caused by its previous behavior and any future bug that Mergo could cause in existing projects after the change (release 0.2.0).

# Install

Do your usual installation procedure:

	go get dario.cat/mergo

	// use in your .go code

	import (

	    "dario.cat/mergo"

	)

# Usage

You can only merge same-type structs with exported fields initialized as zero value of their type and same-types maps. Mergo won't merge unexported (private) fields but will do recursively any exported one. It won't merge empty structs value as they are zero values too. Also, maps will be merged recursively except for structs inside maps (because they are not addressable using Go reflection).

	if err := mergo.Merge(&dst, src); err != nil {

		// ...

	}

Also, you can merge overwriting values using the transformer WithOverride.

	if err := mergo.Merge(&dst, src, mergo.WithOverride); err != nil {

		// ...

	}

Additionally, you can map a map[string]interface{} to a struct (and otherwise, from struct to map), following the same restrictions as in Merge(). Keys are capitalized to find each corresponding exported field.

	if err := mergo.Map(&dst, srcMap); err != nil {

		// ...

	}

Warning: if you map a struct to map, it won't do it recursively. Don't expect Mergo to map struct members of your struct as map[string]interface{}. They will be just assigned as values.

Here is a nice example:

	package main

	import (

		"fmt"

		"dario.cat/mergo"

	)

	type Foo struct {

		A string

		B int64

	}

	func main() {

		src := Foo{

			A: "one",

			B: 2,

		}

		dest := Foo{

			A: "two",

		}

		mergo.Merge(&dest, src)

		fmt.Println(dest)

		// Will print

		// {two 2}

	}

# Transformers

Transformers allow to merge specific types differently than in the default behavior. In other words, now you can customize how some types are merged. For example, time.Time is a struct; it doesn't have zero value but IsZero can return true because it has fields with zero value. How can we merge a non-zero time.Time?

	package main

	import (

		"fmt"

		"dario.cat/mergo"

		"reflect"

		"time"

	)

	type timeTransformer struct {

	}

	func (t timeTransformer) Transformer(typ reflect.Type) func(dst, src reflect.Value) error {

		if typ == reflect.TypeOf(time.Time{}) {

			return func(dst, src reflect.Value) error {

				if dst.CanSet() {

					isZero := dst.MethodByName("IsZero")

					result := isZero.Call([]reflect.Value{})

					if result[0].Bool() {

						dst.Set(src)

					}

				}

				return nil

			}

		}

		return nil

	}

	type Snapshot struct {

		Time time.Time

		// ...

	}

	func main() {

		src := Snapshot{time.Now()}

		dest := Snapshot{}

		mergo.Merge(&dest, src, mergo.WithTransformers(timeTransformer{}))

		fmt.Println(dest)

		// Will print

		// { 2018-01-12 01:15:00 +0000 UTC m=+0.000000001 }

	}

# Contact me

If I can help you, you have an idea or you are using Mergo in your projects, don't hesitate to drop me a line (or a pull request): https://twitter.com/im_dario

# About

Written by Dario Castañé: https://da.rio.hn

# License

BSD 3-Clause license, as Go language.

*/

package mergo

// Copyright 2014 Dario Castañé. All rights reserved.

// Copyright 2009 The Go Authors. All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

// Based on src/pkg/reflect/deepequal.go from official

// golang's stdlib.

package mergo

import (

	"fmt"

	"reflect"

	"unicode"

	"unicode/utf8"

)

func changeInitialCase(s string, mapper func(rune) rune) string {

	if s == "" {

		return s

	}

	r, n := utf8.DecodeRuneInString(s)

	return string(mapper(r)) + s[n:]

}

func isExported(field reflect.StructField) bool {

	r, _ := utf8.DecodeRuneInString(field.Name)

	return r >= 'A' && r <= 'Z'

}

// Traverses recursively both values, assigning src's fields values to dst.

// The map argument tracks comparisons that have already been seen, which allows

// short circuiting on recursive types.

func deepMap(dst, src reflect.Value, visited map[uintptr]*visit, depth int, config *Config) (err error) {

	overwrite := config.Overwrite

	if dst.CanAddr() {

		addr := dst.UnsafeAddr()

		h := 17 * addr

		seen := visited[h]

		typ := dst.Type()

		for p := seen; p != nil; p = p.next {

			if p.ptr == addr && p.typ == typ {

				return nil

			}

		}

		// Remember, remember...

		visited[h] = &visit{typ, seen, addr}

	}

	zeroValue := reflect.Value{}

	switch dst.Kind() {

	case reflect.Map:

		dstMap := dst.Interface().(map[string]interface{})

		for i, n := 0, src.NumField(); i < n; i++ {

			srcType := src.Type()

			field := srcType.Field(i)

			if !isExported(field) {

				continue

			}

			fieldName := field.Name

			fieldName = changeInitialCase(fieldName, unicode.ToLower)

			if _, ok := dstMap[fieldName]; !ok || (!isEmptyValue(reflect.ValueOf(src.Field(i).Interface()), !config.ShouldNotDereference) && overwrite) || config.overwriteWithEmptyValue {