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local api = vim.api
local highlight = {}
---@private
function highlight.create(higroup, hi_info, default)
local options = {}
-- TODO: Add validation
for k, v in pairs(hi_info) do
table.insert(options, string.format("%s=%s", k, v))
end
vim.cmd(string.format([[highlight %s %s %s]], default and "default" or "", higroup, table.concat(options, " ")))
end
---@private
function highlight.link(higroup, link_to, force)
vim.cmd(string.format([[highlight%s link %s %s]], force and "!" or " default", higroup, link_to))
end
--- Highlight range between two positions
---
---@param bufnr number of buffer to apply highlighting to
---@param ns namespace to add highlight to
---@param higroup highlight group to use for highlighting
---@param rtype type of range (:help setreg, default charwise)
---@param inclusive boolean indicating whether the range is end-inclusive (default false)
function highlight.range(bufnr, ns, higroup, start, finish, rtype, inclusive)
rtype = rtype or 'v'
inclusive = inclusive or false
-- sanity check
if start[2] < 0 or finish[1] < start[1] then return end
local region = vim.region(bufnr, start, finish, rtype, inclusive)
for linenr, cols in pairs(region) do
api.nvim_buf_add_highlight(bufnr, ns, higroup, linenr, cols[1], cols[2])
end
end
local yank_ns = api.nvim_create_namespace('hlyank')
--- Highlight the yanked region
---
--- use from init.vim via
--- au TextYankPost * lua vim.highlight.on_yank()
--- customize highlight group and timeout via
--- au TextYankPost * lua vim.highlight.on_yank {higroup="IncSearch", timeout=150}
--- customize conditions (here: do not highlight a visual selection) via
--- au TextYankPost * lua vim.highlight.on_yank {on_visual=false}
---
-- @param opts dictionary with options controlling the highlight:
-- - higroup highlight group for yanked region (default "IncSearch")
-- - timeout time in ms before highlight is cleared (default 150)
-- - on_macro highlight when executing macro (default false)
-- - on_visual highlight when yanking visual selection (default true)
-- - event event structure (default vim.v.event)
function highlight.on_yank(opts)
vim.validate {
opts = { opts,
function(t) if t == nil then return true else return type(t) == 'table' end end,
'a table or nil to configure options (see `:h highlight.on_yank`)',
}}
opts = opts or {}
local event = opts.event or vim.v.event
local on_macro = opts.on_macro or false
local on_visual = (opts.on_visual ~= false)
if (not on_macro) and vim.fn.reg_executing() ~= '' then return end
if event.operator ~= 'y' or event.regtype == '' then return end
if (not on_visual) and event.visual then return end
local higroup = opts.higroup or "IncSearch"
local timeout = opts.timeout or 150
local bufnr = api.nvim_get_current_buf()
api.nvim_buf_clear_namespace(bufnr, yank_ns, 0, -1)
local pos1 = vim.fn.getpos("'[")
local pos2 = vim.fn.getpos("']")
pos1 = {pos1[2] - 1, pos1[3] - 1 + pos1[4]}
pos2 = {pos2[2] - 1, pos2[3] - 1 + pos2[4]}
highlight.range(bufnr, yank_ns, higroup, pos1, pos2, event.regtype, event.inclusive)
vim.defer_fn(
function() api.nvim_buf_clear_namespace(bufnr, yank_ns, 0, -1) end,
timeout
)
end
return highlight
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