From 4308aef7cc403272be21e71676fa4c1e3deb8d88 Mon Sep 17 00:00:00 2001
From: Benedikt Peetz <benedikt.peetz@b-peetz.de>
Date: Fri, 23 Aug 2024 14:36:33 +0200
Subject: feat(pkgs/stamp): Init

---
 modules/home/pkgs/default.nix     |  1 +
 pkgs/by-name/st/stamp/package.nix | 19 +++++++++
 pkgs/by-name/st/stamp/stamp.sh    | 84 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 104 insertions(+)
 create mode 100644 pkgs/by-name/st/stamp/package.nix
 create mode 100755 pkgs/by-name/st/stamp/stamp.sh

diff --git a/modules/home/pkgs/default.nix b/modules/home/pkgs/default.nix
index 4121337c..ad77c5fb 100644
--- a/modules/home/pkgs/default.nix
+++ b/modules/home/pkgs/default.nix
@@ -196,6 +196,7 @@ with pkgs; let
 
     Programming = {
       GeneralTools = [
+        stamp # Add a license header to a file
         git # the fast distributed version control system
         git-absorb # git commit --fixup, but automatic
         git-edit-index # Allows you to edit the indexed version of a file
diff --git a/pkgs/by-name/st/stamp/package.nix b/pkgs/by-name/st/stamp/package.nix
new file mode 100644
index 00000000..06bd5358
--- /dev/null
+++ b/pkgs/by-name/st/stamp/package.nix
@@ -0,0 +1,19 @@
+{
+  sysLib,
+  findutils,
+  fd,
+  reuse,
+  git,
+}:
+sysLib.writeShellScript {
+  name = "stamp";
+  src = ./stamp.sh;
+  generateCompletions = true;
+  keepPath = false;
+  dependencies = [
+    findutils
+    fd
+    reuse
+    git
+  ];
+}
diff --git a/pkgs/by-name/st/stamp/stamp.sh b/pkgs/by-name/st/stamp/stamp.sh
new file mode 100755
index 00000000..10ede809
--- /dev/null
+++ b/pkgs/by-name/st/stamp/stamp.sh
@@ -0,0 +1,84 @@
+#!/usr/bin/env dash
+
+# shellcheck source=/dev/null
+SHELL_LIBRARY_VERSION="2.1.2" . %SHELL_LIBRARY_PATH
+
+help() {
+    cat <<EOF
+A simply file copyright menagment system
+
+USAGE:
+    stamp [OPTIONS] FILE_OR_DIRECTORY
+
+OPTIONS:
+    --help      | -h
+                            Display this help and exit.
+
+    --version   | -v
+                            Display version and copyright information and exit.
+
+    --license   | -l L
+                            Specify a license.
+ARGUMENTS:
+    FILE_OR_DIRECTORY := [[fd . --max-depth 3]]
+                            Possible files to stamp.
+
+    L                 := GPL-3.0-or-later|CC-BY-SA-4.0|AGPL-3.0-or-later
+                            A possible license identifier. These above are only suggestions.
+EOF
+}
+
+reuse_run() {
+    root="$(git rev-parse --show-toplevel)"
+
+    if [ -e "$root/.reuse/templates/default" ]; then
+        reuse annotate \
+            --copyright "$(git config --get user.name) <$(git config --get user.email)>" \
+            --copyright-style string-c \
+            --template default \
+            --license "$license" "$1"
+    else
+        reuse annotate \
+            --copyright "$(git config --get user.name) <$(git config --get user.email)>" \
+            --copyright-style string-c \
+            --license "$license" "$1"
+    fi
+}
+
+for arg in "$@"; do
+    case "$arg" in
+    "--help" | "-h")
+        help
+        exit 0
+        ;;
+    "--version" | "-v")
+        version
+        exit 0
+        ;;
+    esac
+done
+
+while [ "$#" -gt 0 ]; do
+    case "$1" in
+    "--license" | "-l")
+        shift 1
+        license="$1"
+        [ "$license" ] || die "No license specified. See --help for more."
+        shift 1
+        ;;
+    *)
+        file="$1"
+        shift 1
+        ;;
+    esac
+done
+
+if [ -d "$file" ]; then
+    fd . "$file" --type file | while read -r path_file; do
+        reuse_run "$path_file"
+    done
+else
+    reuse_run "$file"
+fi
+
+# vim: ft=sh
-- 
cgit 1.4.1