From b30ecd21fe7b0612473023ae6d2095fe1d5049da Mon Sep 17 00:00:00 2001
From: Ade Attwood <ade@practically.io>
Date: Sat, 23 Jul 2022 08:54:26 +0100
Subject: [PATCH] feat: add sorting and filtering of buffers via libivy

---
 README.md      |  2 +-
 plugin/ivy.lua | 15 +++++++++++++--
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 1b92924..11ec7df 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@ A command can be run that will launch the completion UI
 | ---------- | ----------- | ------------------------------------------------------ |
 | IvyFd      | \<leader\>p | Find files in your project with the fd cli file finder |
 | IvyAg      | \<leader\>/ | Find content in files using the silver searcher        |
-| IvyBuffers |             | Search though open buffers                             |
+| IvyBuffers | \<leader\>b | Search though open buffers                             |
 
 ### Actions
 
diff --git a/plugin/ivy.lua b/plugin/ivy.lua
index 2032c54..b2bd595 100644
--- a/plugin/ivy.lua
+++ b/plugin/ivy.lua
@@ -22,15 +22,26 @@ vim.api.nvim_create_user_command("IvyBuffers", function()
     local buffers = vim.api.nvim_list_bufs()
     for index = 1, #buffers do
       local buffer = buffers[index]
-      local buffer_name = vim.api.nvim_buf_get_name(buffer)
+      -- Get the relative path from the current working directory. We need to
+      -- substring +2 to remove the `/` from the start of the path to give us a
+      -- true relative path
+      local buffer_name = vim.api.nvim_buf_get_name(buffer):sub(#vim.fn.getcwd() + 2, -1)
       if vim.api.nvim_buf_is_loaded(buffer) and #buffer_name > 0 then
-        table.insert(list, buffer_name)
+        local score = libivy.ivy_match(input, buffer_name)
+        if score > -200 or #input == 0 then
+          table.insert(list, { score, buffer_name })
+        end
       end
     end
 
+    table.sort(list, function(a, b)
+      return a[1] < b[1]
+    end)
+
     return list
   end, utils.file_action())
 end, { bang = true, desc = "List all of the current open buffers" })
 
+vim.api.nvim_set_keymap("n", "<leader>b", "<cmd>IvyBuffers<CR>", { nowait = true, silent = true })
 vim.api.nvim_set_keymap("n", "<leader>p", "<cmd>IvyFd<CR>", { nowait = true, silent = true })
 vim.api.nvim_set_keymap("n", "<leader>/", "<cmd>IvyAg<CR>", { nowait = true, silent = true })