make a copy version of link ignored

flakes/common/nix_modules/git/copy_ignored.func.sh

@@ -0,0 +1,153 @@
+copy_ignored() {
+  local DRY_RUN=0
+  local USE_FZF=1
+  local -a PATTERNS=()
+  while [ $# -gt 0 ]; do
+    case "$1" in
+      --dry-run) DRY_RUN=1; shift ;;
+      --no-fzf) USE_FZF=0; shift ;;
+      -h|--help) copy_ignored_usage; return 0 ;;
+      --) shift; break ;;
+      *) PATTERNS+=("$1"); shift ;;
+    esac
+  done
+  copy_ignored_usage() {
+    cat <<EOF
+Usage: copy_ignored [--dry-run] [--no-fzf] [pattern ...]
+Interactively or non-interactively copy files/dirs into the current worktree
+for files/dirs that exist in the main repository root but are git-ignored /
+untracked.
+EOF
+  }
+  # Determine the main repo root using git-common-dir (handles worktrees)
+  local common_dir repo_root
+  if ! common_dir=$(git rev-parse --git-common-dir 2>/dev/null); then
+    echo "Error: not in a git repository." >&2
+    return 2
+  fi
+  if [ "${common_dir#/}" = "$common_dir" ]; then
+    common_dir="$(pwd)/$common_dir"
+  fi
+  repo_root="${common_dir%%/.git*}"
+  if [ -z "$repo_root" ]; then
+    echo "Error: unable to determine repository root." >&2
+    return 2
+  fi
+  local -a candidates=()
+  while IFS= read -r -d '' file; do
+    candidates+=("$file")
+  done < <(git -C "$repo_root" ls-files --others --ignored --exclude-standard -z || true)
+  if [ ${#candidates[@]} -eq 0 ]; then
+    echo "No untracked/ignored files found in $repo_root"
+    return 0
+  fi
+  local -a tops=()
+  for c in "${candidates[@]}"; do
+    c="${c%/}"
+    local top="${c%%/*}"
+    [ -z "$top" ] && continue
+    local found=0
+    for existing in "${tops[@]}"; do
+      [ "$existing" = "$top" ] && found=1 && break
+    done
+    [ "$found" -eq 0 ] && tops+=("$top")
+  done
+  if [ ${#tops[@]} -eq 0 ]; then
+    echo "No top-level ignored/untracked entries found in $repo_root"
+    return 0
+  fi
+  local -a filtered
+  if [ ${#PATTERNS[@]} -gt 0 ]; then
+    for t in "${tops[@]}"; do
+      for p in "${PATTERNS[@]}"; do
+        if [[ "$t" == *"$p"* ]]; then
+          filtered+=("$t")
+          break
+        fi
+      done
+    done
+  else
+    filtered=("${tops[@]}")
+  fi
+  if [ ${#filtered[@]} -eq 0 ]; then
+    echo "No candidates match the provided patterns." >&2
+    return 0
+  fi
+  local -a chosen
+  if command -v fzf >/dev/null 2>&1 && [ "$USE_FZF" -eq 1 ]; then
+    local selected
+    selected=$(printf "%s\n" "${filtered[@]}" | fzf --multi --height=40% --border --prompt="Select files to copy: " --preview "if [ -f '$repo_root'/{} ]; then bat --color always --paging=never --style=plain '$repo_root'/{}; else ls -la '$repo_root'/{}; fi")
+    if [ -z "$selected" ]; then
+      echo "No files selected." && return 0
+    fi
+    chosen=()
+    while IFS= read -r line; do
+      chosen+=("$line")
+    done <<EOF
+$selected
+EOF
+  else
+    chosen=("${filtered[@]}")
+  fi
+  local worktree_root
+  worktree_root=$(pwd)
+  echo "Repository root: $repo_root"
+  echo "Worktree root : $worktree_root"
+  local -a created=()
+  local -a skipped=()
+  local -a errors=()
+  for rel in "${chosen[@]}"; do
+    rel=${rel%%$'\n'}
+    local src="${repo_root}/${rel}"
+    local dst="${worktree_root}/${rel}"
+    if [ ! -e "$src" ]; then
+      errors+=("$rel (source missing)")
+      continue
+    fi
+    if [ -e "$dst" ]; then
+      echo "Skipping $rel (destination exists)"
+      skipped+=("$rel")
+      continue
+    fi
+    mkdir -p "$(dirname "$dst")"
+    if [ "$DRY_RUN" -eq 1 ]; then
+      if [ -d "$src" ]; then
+        echo "DRY RUN: cp -r '$src' '$dst'"
+      else
+        echo "DRY RUN: cp '$src' '$dst'"
+      fi
+    else
+      local copy_result=0
+      if [ -d "$src" ]; then
+        if cp -r "$src" "$dst"; then
+          copy_result=0
+        else
+          copy_result=1
+        fi
+      else
+        if cp "$src" "$dst"; then
+          copy_result=0
+        else
+          copy_result=1
+        fi
+      fi
+      
+      if [ "$copy_result" -eq 0 ]; then
+        echo "Copied: $rel"
+        created+=("$rel")
+      else
+        echo "Failed to copy: $rel" >&2
+        errors+=("$rel (copy failed)")
+      fi
+    fi
+  done
+  echo
+  echo "Summary:"
+  echo "  Copied: ${#created[@]}"
+  [ ${#created[@]} -gt 0 ] && printf '    %s\n' "${created[@]}"
+  echo "  Skipped: ${#skipped[@]}"
+  [ ${#skipped[@]} -gt 0 ] && printf '    %s\n' "${skipped[@]}"
+  echo "  Errors: ${#errors[@]}"
+  [ ${#errors[@]} -gt 0 ] && printf '    %s\n' "${errors[@]}"
+  return 0
+}