96 lines
3.1 KiB
Lua
96 lines
3.1 KiB
Lua
-- Copyright (c) 2020-2021 shadmansaleh
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-- MIT license, see LICENSE for more details.
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local M = { }
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local highlight = require'lualine.highlight'
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-- set upper or lower case
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local function apply_case(status, options)
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-- Donn't work on components that emit vim statusline escaped chars
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if status:find('%%') and not status:find('%%%%') then return status end
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if options.upper == true then
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return status:upper()
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elseif options.lower == true then
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return status:lower()
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end
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return status
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end
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-- Adds spaces to left and right of a component
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local function apply_padding(status, options)
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local l_padding = (options.left_padding or options.padding or 1)
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local r_padding = (options.right_padding or options.padding or 1)
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if l_padding then status = string.rep(' ', l_padding)..status end
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if r_padding then status = status..string.rep(' ', r_padding) end
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return status
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end
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-- Applies custom highlights for component
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local function apply_highlights(status, options)
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if options.color_highlight then
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status = highlight.component_format_highlight(options.color_highlight) .. status
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end
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return status
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end
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-- Apply icon in front of component
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local function apply_icon(status, options)
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if options.icons_enabled and options.icon then
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status = options.icon .. ' ' .. status
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end
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return status
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end
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-- Apply separator at end of component only when
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-- custom highlights haven't affected background
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local function apply_spearator(status, options)
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if options.separator and #options.separator > 0 and
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(not options.color or not options.color.bg) then
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status = status .. options.separator
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options.separator_applied = true
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end
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return status
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end
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-- Returns formated string for a section
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function M.draw_section(section, highlight)
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local status = {}
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for _, component in pairs(section) do
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-- Reset flags
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component.drawn = false -- Flag to check if a component was drawn or not
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component.separator_applied = false -- Flag to check if separator was applied
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local localstatus = component[1]()
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if #localstatus > 0 then
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-- Apply modifier functions for options
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if component.format then localstatus = component.format(localstatus) end
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localstatus = apply_icon(localstatus, component)
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localstatus = apply_case(localstatus, component)
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localstatus = apply_padding(localstatus, component)
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localstatus = apply_highlights(localstatus, component)
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localstatus = apply_spearator(localstatus, component)
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table.insert(status, localstatus)
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component.drawn = true
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end
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end
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-- Draw nothing when all the components were empty
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if #status == 0 then return '' end
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-- convert to single string
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-- highlight is used as separator so custom highlights don't affect
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-- later components
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local status_str = highlight .. table.concat(status, highlight)
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-- Remove separator from last drawn component if available
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for last_component = #section, 1, -1 do
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if section[last_component].drawn then
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if section[last_component].separator_applied then
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status_str = status_str:sub(1, #status_str - #section[last_component].separator)
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end
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break
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end
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end
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return status_str
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end
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return M
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