zettelkasten.nvim/lua/zettelkasten/action.lua

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local A = {}
local o = require 'zettelkasten.options'
local parsers = {markdown = "%[.-%]%((.-)%)", wiki = "%[%[(.+)|?.-%]%]"}
-- Extracts a file name from a link and opens the corresponding file
-- in the current buffer.
-- Takes an optional input parameter
function A.open(input)
local fname = A.extract_link(input)
if not fname then return end
-- TODO follow: go to anchor, fall back to filename
vim.api.nvim_command(string.format("edit %s", fname))
end
-- Gets the input at the current buffer cursor and opens it
-- in the current buffer.
-- Takes an optional style of link following to use,
-- superseding the one set in options.
function A.open_selected(style)
local style = style or o.zettel().link_following
if style == 'line' then
A.open(A.get_next_link_on_line())
elseif style == 'cursor' then
A.open(A.get_link_under_cursor())
end
end
-- Return only the link reference portion of a markdown/wiki style link.
-- For example, for a markdown link [my text](my-link.md)
-- it would only return my-link.md
function A.extract_link(input)
if not input then return end
for _, parser in pairs(parsers) do return input:match(parser) end
return
end
-- Returns the word currently under cursor, the vim equivalent of yiW.
-- Takes an optional boolean flag to set the word being caught
-- to the vim equivalent of doing yiw, a more exclusive version.
function A.get_link_under_cursor(small)
local c = "<cWORD>"
if small then c = "<cword>" end
local word = vim.fn.expand(c)
return word
end
-- Returns the content of the line from the cursor onwards.
function A.get_next_link_on_line()
local line = vim.api.nvim_get_current_line()
return line:sub(vim.api.nvim_win_get_cursor(0)[2])
end
return {open = A.open, open_selected = A.open_selected}