chore: rename lib folder to nvim-tree

Allows external access to the lua api and follow neovim plugins better
practices

lua/nvim-tree/colors.lua

@@ -0,0 +1,86 @@
+local api = vim.api
+local config = require'nvim-tree.config'
+
+local M = {}
+
+local function get_color_from_hl(hl_name, fallback)
+  local id = vim.api.nvim_get_hl_id_by_name(hl_name)
+  if not id then return fallback end
+
+  local hl = vim.api.nvim_get_hl_by_id(id, true)
+  if not hl or not hl.foreground then return fallback end
+
+  return hl.foreground
+end
+
+local function get_colors()
+  return {
+    red      = vim.g.terminal_color_1  or get_color_from_hl('Keyword', 'Red'),
+    green    = vim.g.terminal_color_2  or get_color_from_hl('Character', 'Green'),
+    yellow   = vim.g.terminal_color_3  or get_color_from_hl('PreProc', 'Yellow'),
+    blue     = vim.g.terminal_color_4  or get_color_from_hl('Include', 'Blue'),
+    purple   = vim.g.terminal_color_5  or get_color_from_hl('Define', 'Purple'),
+    cyan     = vim.g.terminal_color_6  or get_color_from_hl('Conditional', 'Cyan'),
+    dark_red = vim.g.terminal_color_9  or get_color_from_hl('Keyword', 'DarkRed'),
+    orange   = vim.g.terminal_color_11 or get_color_from_hl('Number', 'Orange'),
+  }
+end
+
+local function get_hl_groups()
+  local colors = get_colors()
+
+  return {
+    IndentMarker = { fg = '#8094b4' },
+    Symlink = { gui = 'bold', fg = colors.cyan },
+    FolderIcon = { fg = '#8094b4' },
+    RootFolder = { fg = colors.purple },
+
+    ExecFile = { gui = 'bold', fg = colors.green },
+    SpecialFile = { gui = 'bold,underline', fg = colors.yellow },
+    ImageFile = { gui = 'bold', fg = colors.purple },
+
+    GitDirty = { fg = colors.dark_red },
+    GitDeleted = { fg = colors.dark_red },
+    GitStaged = { fg = colors.green },
+    GitMerge = { fg = colors.orange },
+    GitRenamed = { fg = colors.purple },
+    GitNew = { fg = colors.yellow }
+  }
+end
+
+local function get_links()
+  return {
+    FolderName = 'Directory',
+    EmptyFolderName = 'Directory',
+    Normal = 'Normal',
+    EndOfBuffer = 'EndOfBuffer',
+    CursorLine = 'CursorLine',
+    VertSplit = 'VertSplit',
+    CursorColumn = 'CursorColumn',
+    FileDirty = 'NvimTreeGitDirty',
+    FileNew = 'NvimTreeGitNew',
+    FileRenamed = 'NvimTreeGitRenamed',
+    FileMerge = 'NvimTreeGitMerge',
+    FileStaged = 'NvimTreeGitStaged',
+    FileDeleted = 'NvimTreeGitDeleted',
+    Popup = 'Normal',
+  }
+end
+
+function M.setup()
+  if config.get_icon_state().show_file_icon then
+    require'nvim-web-devicons'.setup()
+  end
+  local higlight_groups = get_hl_groups()
+  for k, d in pairs(higlight_groups) do
+    local gui = d.gui or 'NONE'
+    api.nvim_command('hi def NvimTree'..k..' gui='..gui..' guifg='..d.fg)
+  end
+
+  local links = get_links()
+  for k, d in pairs(links) do
+    api.nvim_command('hi def link NvimTree'..k..' '..d)
+  end
+end
+
+return M