102 lines
3.3 KiB
Lua
102 lines
3.3 KiB
Lua
--[[ NOTHING INSIDE THIS FILE NEEDS TO BE EDITED BY THE USER. ]]
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local vim = vim
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-- Clear the highlighting.
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vim.cmd('hi clear')
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-- Set the background to dark.
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vim.o.background = 'dark'
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-- Disable automatic coloring for the IndentGuides plugin.
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vim.g.indent_guides_auto_colors = 0
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-- If the syntax has been enabled, reset it.
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if vim.fn.exists('syntax_on') then vim.cmd('syntax reset') end
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-- Determine which set of colors to use.
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local use_hex_and_256 = string.find(vim.fn.expand('$TERM'), '256')
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or vim.g.t_Co >= 256
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or vim.fn.has('gui_running')
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-- If we aren't using the hex and 256 colorset, then set the &t_Co variable to 16.
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if not use_hex_and_256 then vim.g.t_Co = 16 end
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-- These are constants for the indexes in the colors that were defined before.
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local BIT_16 = 3
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local BIT_256 = 2
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local HEX = 1
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-- Get the color value of a color variable, or "NONE" as a default.
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local function get(color, index)
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if type(color) == 'table' and color[index] then
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return color[index]
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elseif type(color) == 'string' then
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return color
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else
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return "NONE"
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end
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end
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--[[ If using hex and 256-bit colors, then populate the gui* and cterm* args.
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If using 16-bit colors, just populate the cterm* args. ]]
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local colorize = use_hex_and_256 and function(command, attributes) command[#command + 1] =
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' ctermbg='..get(attributes.bg, BIT_256)
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..' ctermfg='..get(attributes.fg, BIT_256)
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..' guibg='..get(attributes.bg, HEX)
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..' guifg='..get(attributes.fg, HEX)
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end or function(command, attributes) command[#command + 1] =
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' ctermbg='..get(attributes.bg, BIT_16)
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..' ctermfg='..get(attributes.fg, BIT_16)
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end
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-- This function appends `selected_attributes` to the end of `highlight_cmd`.
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local stylize = use_hex_and_256 and function(command, attributes)
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command[#command + 1] = ' cterm='..attributes..' gui='..attributes
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end or function(command, attributes)
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command[#command + 1] = ' cterm='..attributes
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end
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-- Generate a `:highlight` command from a group and some attributes.
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local function highlight(highlight_group, attributes) -- {{{ â€
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local highlight_cmd = {'hi! ', highlight_group}
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local link = (type(attributes) == 'string' and attributes)
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or attributes.link
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if link then -- `highlight_group` is a link to another group.
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highlight_cmd[3] = highlight_cmd[2]..' '
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highlight_cmd[2] = 'link '
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highlight_cmd[4] = link
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else -- the `highlight_group` is uniquely defined.
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colorize(highlight_cmd, attributes)
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local style = attributes.style
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if type(style) == 'table' then
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-- Concat all of the entries together with a comma between before styling.
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stylize(highlight_cmd, table.concat(style, ','))
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if style.color then -- there won't is a color for undercurl.
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highlight_cmd[#highlight_cmd + 1] = ' guisp='..get(style.color, HEX)
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end
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else -- just style the single entry.
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stylize(highlight_cmd, style)
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end
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end
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vim.cmd(table.concat(highlight_cmd))
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end --}}} ‡
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return function(Normal, highlights, terminal_ansi_colors)
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-- Highlight the baseline.
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highlight('Normal', Normal)
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-- Highlight everything else.
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for highlight_group, attributes in pairs(highlights) do
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highlight(highlight_group, attributes)
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end
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-- Set the terminal colors.
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for index, color in ipairs(terminal_ansi_colors) do
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vim.g['terminal_color_'..index] = color[HEX] or color[BIT_256] or color[BIT_16]
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end
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end
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