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https://github.com/marslo/cr-manager

the pre-commit hook to add/update/delete the copyright header in files/folders
https://github.com/marslo/cr-manager

copyright pre-commit-copyright pre-commit-hook pre-commit-hooks

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the pre-commit hook to add/update/delete the copyright header in files/folders

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---

# cr-manager -- the Copyright Header Manager

A tool to automatically **add**, **update**, or **delete** multi-format copyright headers in source files.

---

- [Features](#features)
- [How to Contribute](#how-to-contribute)
- [Action Modes](#action-modes)
- [Add New Copyright Headers](#add-new-copyright-headers)
- [Update Existing Copyright Headers](#update-existing-copyright-headers)
- [Delete Existing Copyright Headers](#delete-existing-copyright-headers)
- [Debug Mode](#debug-mode)
- [Supported File Types and Formats](#supported-file-types-and-formats)
- [pre-commit hook](#pre-commit-hook)
- [Install](#install)
- [Binary](#binary)
- [bash completion](#bash-completion)
- [Help Message](#help-message)

---

# Features

- **Add**: Insert copyright headers for multiple file types.
- **Update**: Force update or insert headers if missing.
- **Check**: Verify the presence and correctness of headers.
- **Delete**: Remove detected copyright headers from files.
- Supports recursive directory traversal and filetype auto-detection or override.
- Supports combined author-info and copyright headers.

---

# [How to Contribute](https://github.com/marslo/cr-manager/blob/main/CONTRIBUTING.md)

---

# Action Modes

> without any action mode specified, the default action is to **add** copyright headers.

| OPTION | DESCRIPTION |
| ---------- | --------------------------------------------------------------------------- |
| | Add mode: Automatically adds copyright headers to files (default). |
| `--add` | Add mode: Automatically adds copyright headers to files (default). |
| `--check` | Check mode: Verifies file copyright status (match, mismatch, or not found). |
| `--delete` | Delete mode: Removes detected copyright headers from files. |
| `--update` | Update mode: Forces replacement of copyright or adds it if missing. |

## Add New Copyright Headers
```bash
# single file
$ cr-manager /path/to/file
# or
$ cr-manager --add /path/to/file

# files recursively in directories
$ cr-manager --recursive /path/to/directory
# or
$ cr-manager --add --recursive /path/to/directory

# add to non-supported suffixes with supplied filetype
# -- e.g. add to .txt files as python files --
$ cr-manager --filetype python /path/to/file.txt
# or
$ cr-manager --add --filetype python /path/to/file.txt
```

## Update Existing Copyright Headers

> `--filetype ` can be used to force a specific filetype for the update action, overriding auto-detection.

```bash
# single file
$ cr-manager --update /path/to/file

# files recursively in directories
$ cr-manager --update --recursive /path/to/directory
```

## Delete Existing Copyright Headers

> `--filetype ` can be used to force a specific filetype for the delete action, overriding auto-detection.

```bash
# single file
$ cr-manager --delete /path/to/file

# files recursively in directories
$ cr-manger --delete --recursive /path/to/directory
```

## Debug Mode

```bash
# *add* without modifying files
$ cr-manager --debug /path/to/file
# or
$ cr-manager --add --debug /path/to/file

# *update* without modifying files
$ cr-manager --update --debug /path/to/file

# *delete* without modifying files
$ cr-manager --delete --debug /path/to/file
```

## Supported File Types and Formats

> - check [Running as CLI tool](https://github.com/marslo/cr-manager?tab=readme-ov-file#running-as-cli-tool)

| FILETYPE | SUFFIXES |
|:---------------------------------------------:|:---------------------------:|
| `python`, `shell`, `bash`, `sh`, `dockerfile` | `.py`, `.sh`, `.dockerfile` |

```
$ cr-manager --filetype python
# ============================================================================ #
# Copyright © 2026 marslo #
# Licensed under the MIT License, Version 2.0 #
# ============================================================================ #
```

![Python](https://github.com/marslo/cr-manager/raw/main/screenshots/ft-py.png)

---

| FILETYPE | SUFFIXES |
|:-----------------------------------------:|:------------------:|
| `jenkinsfile`, `groovy`, `gradle`, `java` | `.groovy`, `.java` |

```
$ cr-manager --filetype groovy
/**
*******************************************************************************
* Copyright © 2026 marslo *
* Licensed under the MIT License, Version 2.0 *
*******************************************************************************
**/
```

![java-groovy](https://github.com/marslo/cr-manager/raw/main/screenshots/ft-java-groovy.png)

---

| FILETYPE | SUFFIXES |
|:-------------------------------------------:|:------------------------------------------:|
| `c`, `cpp`, `c++`, `cxx`, `h`, `hpp`, `hxx` | `.c`, `.cpp`, `.cxx`, `.h`, `.hpp`, `.hxx` |

```
$ cr-manager --filetype cpp
/**
* Copyright © 2026 marslo
* Licensed under the MIT License, Version 2.0
*/
```

![c/cpp](https://github.com/marslo/cr-manager/raw/main/screenshots/ft-cpp.png)

---

## pre-commit hook

```yaml
# if `COPYRIGHT` file can be found in the root directory of this repository
---
repos:
- repo: https://github.com/marslo/cr-manager
rev: v3.2.0
hooks:
- id: cr-manager
args: ["--update"]
```

```yaml
# specify the path to the COPYRIGHT file
---
repos:
- repo: https://github.com/marslo/cr-manager
rev: v3.2.0
hooks:
- id: cr-manager
args: ["--update", "--copyright", "/path/to/COPYRIGHT"]
files: ^(jenkinsfile/|.*\.(groovy|py|sh)$)
```

```yaml
# only check the copyright headers without modifying files after commit
---
repos:
- repo: https://github.com/marslo/cr-manager
rev: v3.2.0
hooks:
- id: cr-manager
args: ["--check"]
stages: [post-commit]
```

---

# Install
## Binary

> - pipx installation ( [how to install pipx](https://pipx.pypa.io/stable/how-to/install-pipx/) )
> ```bash
> $ python3 -m pip install pipx
> $ python3 -m pipx ensurepath
> ```
> - enable the ansicolor in Windows terminal for better output experience.
> ```batch
> > reg add HKCU\Console /v VirtualTerminalLevel /t REG_DWORD /d 1
> ```

```bash
# via pipx
$ pipx install --force "git+https://github.com/marslo/cr-manager"
# via pip
$ python3 -m pip install cr-manager

# with binary
$ VERSION="$(curl -fsSL https://api.github.com/repos/marslo/cr-manager/releases/latest | jq -r .tag_name)"
# -- linux --
$ curl -fsSL -o cr-manager https://github.com/marslo/cr-manager/releases/download/${VERSION}/cr-manager-linux
# macos
$ curl -fsSL -o cr-manager https://github.com/marslo/cr-manager/releases/download/${VERSION}/cr-manager-macos
# Windows - running in cmd
> powershell -NoProfile -Command "$v=(Invoke-WebRequest -Uri 'https://api.github.com/repos/marslo/cr-manager/releases/latest' -UseBasicParsing | ConvertFrom-Json).tag_name; Invoke-WebRequest -Uri ('https://github.com/marslo/cr-manager/releases/download/'+$v+'/cr-manager.exe') -OutFile 'cr-manager.exe'; Write-Host ('Downloaded '+$v)"
```

## bash completion

> automatically detect the OS and install bash completion to the appropriate directory:
> - macos: $(brew --prefix)/etc/bash_completion.d → $XDG_DATA_HOME/.local/share → ~/.bash_completion.d
> - linux: $XDG_DATA_HOME/.local/share → ~/.bash_completion.d → /usr/share/bash-completion/completions → /etc/bash_completion.d

```bash
# macos
$ cr-manager --install-completion
# or install manually
$ cr-manager --completion | tee "$(brew --prefix)/etc/bash_completion.d/cr-manager"
```

```bash
# linux user folder
$ cr-manager --install-completion
# or install manually
$ cr-manager --completion | tee ~/.bash_completion.d/cr-manager

# linux system folder (requires sudo)
$ sudo cr-manager --install-completion
# or install manually
$ cr-manager --completion | sudo tee /etc/bash_completion.d/cr-manager
```

```bash
# uninstall
test -f ~/.bash_completion.d/cr-manager && rm -rf ~/.bash_completion.d/cr-manager
test -f /etc/bash_completion.d/cr-manager && sudo rm -rf /etc/bash_completion.d/cr-manager
[[ 'Darwin' = "$(uname -s)" ]] && test -f "$(brew --prefix)/etc/bash_completion.d/cr-manager" && rm -rf "$(brew --prefix)/etc/bash_completion.d/cr-manager"
```

# Help Message

```bash
$ cr-manager --help
USAGE:
cr-manager [--add | --check | --delete | --update] [--copyright FILE] [--filetype TYPE] [--recursive]
[--debug] [--verbose] [--completion] [--install-completion] [--help] [--version]
FILES ...

A tool to automatically add, update, or delete multi-format copyright headers.

POSITIONAL ARGUMENTS:
FILES ... List of target files or directories to process.

ACTION MODES:
-a, --add Add mode: Adds copyright header to files that are missing it (default).
-c, --check Check mode: Verifies file copyright status (match, mismatch, or not found).
-d, --delete Delete mode: Removes detected copyright headers from files.
-u, --update Update mode: Forces replacement of copyright or adds it if missing.

OPTIONS:
--copyright FILE Specify the copyright template file path (default: COPYRIGHT).
-t, --filetype TYPE Force override a filetype instead of auto-detection.
If provided, displays a formatted preview for that type. Supported: bash, c,
c++, cpp, cxx, dockerfile, gradle, groovy, h, hpp, hxx, java, jenkinsfile,
python, sh, shell
-r, --recursive If FILES includes directories, process their contents recursively.
--debug Debug mode: Preview the result of an action without modifying files.
--verbose Show a detailed processing summary.
--completion Print the bash completion script to stdout.
--install-completion Install bash completion to the OS-appropriate directory (auto-detected, no
root needed by default).
-h, --help Show this help message and exit.
-v, --version Show program's version number and exit.
```