138 lines
4.7 KiB
Lua
138 lines
4.7 KiB
Lua
local highlight = require('lualine.highlight')
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local Buffer = require('lualine.utils.class'):extend()
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---intialize a new buffer from opts
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---@param opts table
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function Buffer:init(opts)
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assert(opts.bufnr, 'Cannot create Buffer without bufnr')
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self.bufnr = opts.bufnr
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self.options = opts.options
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self.highlights = opts.highlights
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self:get_props()
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end
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---setup icons, modified status for buffer
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function Buffer:get_props()
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self.file = vim.fn.bufname(self.bufnr)
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self.buftype = vim.api.nvim_buf_get_option(self.bufnr, 'buftype')
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self.filetype = vim.api.nvim_buf_get_option(self.bufnr, 'filetype')
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local modified = self.options.show_modified_status and vim.api.nvim_buf_get_option(self.bufnr, 'modified')
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local modified_icon = self.options.icons_enabled and ' ●' or ' +'
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self.modified_icon = modified and modified_icon or ''
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self.icon = ''
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if self.options.icons_enabled then
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local dev
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local status, _ = pcall(require, 'nvim-web-devicons')
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if not status then
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dev, _ = '', ''
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elseif self.filetype == 'TelescopePrompt' then
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dev, _ = require('nvim-web-devicons').get_icon('telescope')
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elseif self.filetype == 'fugitive' then
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dev, _ = require('nvim-web-devicons').get_icon('git')
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elseif self.filetype == 'vimwiki' then
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dev, _ = require('nvim-web-devicons').get_icon('markdown')
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elseif self.buftype == 'terminal' then
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dev, _ = require('nvim-web-devicons').get_icon('zsh')
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elseif vim.fn.isdirectory(self.file) == 1 then
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dev, _ = '', nil
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else
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dev, _ = require('nvim-web-devicons').get_icon(self.file, vim.fn.expand('#' .. self.bufnr .. ':e'))
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end
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if dev then
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self.icon = dev .. ' '
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end
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end
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end
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---returns rendered buffer
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---@return string
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function Buffer:render()
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local name = self:name()
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if self.options.fmt then
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name = self.options.fmt(name or '')
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end
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if self.ellipse then -- show elipsis
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name = '...'
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else
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if self.options.mode == 0 then
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name = string.format('%s%s%s', self.icon, name, self.modified_icon)
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elseif self.options.mode == 1 then
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name = string.format('%s %s%s', self.bufnr, self.icon, self.modified_icon)
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else
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name = string.format('%s %s%s%s', self.bufnr, self.icon, name, self.modified_icon)
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end
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end
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name = Buffer.apply_padding(name, self.options.padding)
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self.len = vim.fn.strchars(name)
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-- setup for mouse clicks
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local line = string.format('%%%s@LualineSwitchBuffer@%s%%T', self.bufnr, name)
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-- apply highlight
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line = highlight.component_format_highlight(self.highlights[(self.current and 'active' or 'inactive')]) .. line
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-- apply separators
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if self.options.self.section < 'lualine_x' and not self.first then
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local sep_before = self:separator_before()
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line = sep_before .. line
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self.len = self.len + vim.fn.strchars(sep_before)
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elseif self.options.self.section >= 'lualine_x' and not self.last then
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local sep_after = self:separator_after()
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line = line .. sep_after
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self.len = self.len + vim.fn.strchars(sep_after)
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end
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return line
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end
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---apply separator before current buffer
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---@return string
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function Buffer:separator_before()
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if self.current or self.aftercurrent then
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return '%S{' .. self.options.section_separators.left .. '}'
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else
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return self.options.component_separators.left
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end
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end
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---apply separator after current buffer
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---@return string
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function Buffer:separator_after()
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if self.current or self.beforecurrent then
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return '%s{' .. self.options.section_separators.right .. '}'
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else
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return self.options.component_separators.right
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end
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end
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---returns name of current buffer after filtering special buffers
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---@return string
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function Buffer:name()
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if self.options.filetype_names[self.filetype] then
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return self.options.filetype_names[self.filetype]
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elseif self.buftype == 'help' then
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return 'help:' .. vim.fn.fnamemodify(self.file, ':t:r')
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elseif self.buftype == 'terminal' then
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local match = string.match(vim.split(self.file, ' ')[1], 'term:.*:(%a+)')
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return match ~= nil and match or vim.fn.fnamemodify(vim.env.SHELL, ':t')
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elseif vim.fn.isdirectory(self.file) == 1 then
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return vim.fn.fnamemodify(self.file, ':p:.')
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elseif self.file == '' then
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return '[No Name]'
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end
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return self.options.show_filename_only and vim.fn.fnamemodify(self.file, ':t')
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or vim.fn.pathshorten(vim.fn.fnamemodify(self.file, ':p:.'))
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end
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---adds spaces to left and right
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function Buffer.apply_padding(str, padding)
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local l_padding, r_padding = 1, 1
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if type(padding) == 'number' then
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l_padding, r_padding = padding, padding
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elseif type(padding) == 'table' then
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l_padding, r_padding = padding.left or 0, padding.right or 0
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end
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return string.rep(' ', l_padding) .. str .. string.rep(' ', r_padding)
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end
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return Buffer
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