1 files changed, 54 insertions, 0 deletions
diff --git a/lua/lua/oil-gitignore.lua b/lua/lua/oil-gitignore.lua
new file mode 100644
index 0000000..a63eaf0
--- /dev/null
+++ b/lua/lua/oil-gitignore.lua
@@ -0,0 +1,54 @@
+--https://github.com/stevearc/oil.nvim/blob/master/doc/recipes.md#hide-gitignored-files-and-show-git-tracked-hidden-files
+
+local M = {}
+
+-- helper function to parse output
+function M.parse_output(proc)
+  local result = proc:wait()
+  local ret = {}
+  if result.code == 0 then
+    for line in vim.gsplit(result.stdout, "\n", { plain = true, trimempty = true }) do
+      -- Remove trailing slash
+      line = line:gsub("/$", "")
+      ret[line] = true
+    end
+  end
+  return ret
+end
+
+-- build git status cache
+function M.new_git_status()
+  return setmetatable({}, {
+    __index = function(self, key)
+      local ignore_proc = vim.system(
+        { "git", "ls-files", "--ignored", "--exclude-standard", "--others", "--directory" },
+        {
+          cwd = key,
+          text = true,
+        }
+      )
+      local tracked_proc = vim.system({ "git", "ls-tree", "HEAD", "--name-only" }, {
+        cwd = key,
+        text = true,
+      })
+      local ret = {
+        ignored = M.parse_output(ignore_proc),
+        tracked = M.parse_output(tracked_proc),
+      }
+
+      rawset(self, key, ret)
+      return ret
+    end,
+  })
+end
+M.git_status = M.new_git_status()
+
+-- Clear git status cache on refresh
+M.refresh = require("oil.actions").refresh
+M.orig_refresh = M.refresh.callback
+M.refresh.callback = function(...)
+  git_status = M.new_git_status()
+  M.orig_refresh(...)
+end
+
+return M