Paste and rename functionality (single file) or duplicate

[lalvarezt]

probably not the best way to go about it but seems to work
more info here #903

return {
  "folke/snacks.nvim",

  opts = {
    picker = {
      actions = {
        explorer_paste_rename = function(picker)
          local uv = vim.uv or vim.loop
          local Tree = require("snacks.explorer.tree")
          local M = require("snacks.explorer.actions")

          local files = vim.split(vim.fn.getreg(vim.v.register or "+") or "", "\n", { plain = true })
          files = vim.tbl_filter(function(file)
            return file ~= "" and vim.fn.filereadable(file) == 1
          end, files)

          if #files == 0 then
            return Snacks.notify.warn(("The `%s` register does not contain any files"):format(vim.v.register or "+"))
          end
          if #files == 1 then
            local file = files[1]
            local base = vim.fn.fnamemodify(file, ":t")
            local dir = picker:dir()
            Snacks.input({
              prompt = "Rename pasted file",
              default = base,
            }, function(value)
              if not value or value:find("^%s*$") then
                return
              end
              local target = vim.fs.normalize(dir .. "/" .. value)
              if uv.fs_stat(target) then
                Snacks.notify.warn("File already exists:\n- `" .. target .. "`")
                return
              end
              Snacks.picker.util.copy_path(file, target)
              Tree:refresh(dir)
              Tree:open(dir)
              M.update(picker, { target = dir })
            end)
          else
            local dir = picker:dir()
            Snacks.picker.util.copy(files, dir)
            Tree:refresh(dir)
            Tree:open(dir)
            M.update(picker, { target = dir })
          end
        end,
      },

      sources = {
        explorer = {
          win = {
            list = {
              keys = {
                ["R"] = "explorer_paste_rename",
              },
            },
          },
        },
      },
  },
}

[lalvarezt]

another option is to modify the c copy behavior and use the current name as default
pasting multiple files appends _1 _2 etc to avoid already existing items

return {
  "folke/snacks.nvim",

  opts = {
    picker = {
      actions = {
        explorer_copy_default = function(picker, item)
          if not item then
            return
          end
          local Tree = require("snacks.explorer.tree")
          local actions = require("snacks.explorer.actions")
          local uv = vim.uv or vim.loop
          ---@type string[]
          local paths = vim.tbl_map(Snacks.picker.util.path, picker:selected())
          -- Copy selection
          if #paths > 0 then
            local dir = picker:dir()
            Snacks.picker.util.copy(paths, dir)
            picker.list:set_selected() -- clear selection
            Tree:refresh(dir)
            Tree:open(dir)
            actions.update(picker, { target = dir })
            return
          end
          Snacks.input({
            prompt = "Copy to",
            default = vim.fn.fnamemodify(item.file, ":t"),
          }, function(value)
            if not value or value:find("^%s$") then
              return
            end
            local dir = vim.fs.dirname(item.file)
            local to = svim.fs.normalize(dir .. "/" .. value)
            if uv.fs_stat(to) then
              Snacks.notify.warn("File already exists:\n- `" .. to .. "`")
              return
            end
            Snacks.picker.util.copy_path(item.file, to)
            Tree:refresh(vim.fs.dirname(to))
            actions.update(picker, { target = to })
          end)
        end,

        explorer_paste_rename = function(picker)
          local Tree = require("snacks.explorer.tree")
          local actions = require("snacks.explorer.actions")
          local files = vim.split(vim.fn.getreg(vim.v.register or "+") or "", "\n", { plain = true })
          files = vim.tbl_filter(function(file)
            return file ~= "" and vim.fn.filereadable(file) == 1
          end, files)

          if #files == 0 then
            return Snacks.notify.warn(("The `%s` register does not contain any files"):format(vim.v.register or "+"))
          elseif #files == 1 then
            local file = files[1]
            local base = vim.fn.fnamemodify(file, ":t")
            local dir = picker:dir()
            Snacks.input({
              prompt = "Rename pasted file",
              default = base,
            }, function(value)
              if not value or value:find("^%s*$") then
                return
              end
              local uv = vim.uv or vim.loop
              local target = vim.fs.normalize(dir .. "/" .. value)
              if uv.fs_stat(target) then
                return Snacks.notify.warn("File already exists:\n- `" .. target .. "`")
              end
              Snacks.picker.util.copy_path(file, target)
              Tree:refresh(dir)
              Tree:open(dir)
              actions.update(picker, { target = target })
            end)
          else
            local dir = picker:dir()
            local uv = vim.uv or vim.loop
            for _, file in ipairs(files) do
              local base = vim.fn.fnamemodify(file, ":t")
              local target = vim.fs.normalize(dir .. "/" .. base)
              local name, ext = base:match("^(.*)%.(.*)$")
              name = name or base
              ext = ext and ("." .. ext) or ""

              local count = 1
              while uv.fs_stat(target) do
                target = vim.fs.normalize(dir .. "/" .. name .. "_" .. count .. ext)
                count = count + 1
              end

              Snacks.picker.util.copy_path(file, target)
            end
            Tree:refresh(dir)
            Tree:open(dir)
            actions.update(picker, { target = dir })
          end
        end,
      },

      sources = {
        explorer = {
          win = {
            list = {
              keys = {
                ["R"] = "explorer_paste_rename",
                ["C"] = "explorer_copy_default",
              },
            },
          },
        },
      },
  },
}

[bhuynhdev]

Amazing solution; I just adopted this to my setup. Thank you very much

I have also discovered that Yank then copy (y then c) could also be a good alternative to "Paste Rename" if you know for sure that you are going to rename after paste. Disadvantage is you have to type in the whole file name, in contrast to the old name already on the input field