36 lines
1.0 KiB
Lua
36 lines
1.0 KiB
Lua
local EvalFuncComponent = require('lualine.component'):new()
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EvalFuncComponent.update_status = function(self)
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local component = self.options[1]
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local ok, status = EvalFuncComponent.evallua(component)
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if not ok then status = EvalFuncComponent.vim_function(component) end
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return status
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end
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EvalFuncComponent.evallua = function(code)
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if loadstring(string.format('return %s ~= nil', code)) and
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loadstring(string.format([[return %s ~= nil]], code))() then
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-- lua veriable component
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return true, loadstring(string.format(
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[[
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local ok, return_val = pcall(tostring, %s)
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if ok then return return_val end
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return '']], code))()
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end
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return false, ''
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end
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EvalFuncComponent.vim_function = function(name)
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-- vim function component
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local ok, return_val = pcall(vim.fn[name])
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if not ok then return '' end -- function call failed
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ok, return_val = pcall(tostring, return_val)
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if ok then
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return return_val
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else
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return ''
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end
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end
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return EvalFuncComponent
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