41 lines
1.2 KiB
Lua
41 lines
1.2 KiB
Lua
local A = {}
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local o = require 'zettelkasten.options'
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-- Return a valid zettelkasten anchor,
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-- composed of yymmddHHMM.
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--
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-- date can be passed in as a table containing a year, a month, a day, an hour,
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-- and a minute key. Returns nil if the date passed in is invalid.
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-- If no date is passed in, returns Zettel anchor for current moment.
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function A.create(date)
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local timestamp
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if pcall(function() timestamp = os.time(date) end) then
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return os.date('%y%m%d%H%M', timestamp)
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else
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return nil
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end
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end
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-- TODO think about making clean/anchor/extension function module private
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-- Returns the text passed in with the anchor passed in prepended.
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function A.prepend(anchor, text)
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if not text or text == "" then return anchor end
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text = anchor .. o.anchor().separator .. text
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return text
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end
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-- Returns anchor contents if an anchor is contained in the input string.
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-- It takes an optional regex parameter with which the plugin option
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-- of which anchor to look for can be overwritten.
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--
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-- If multiple anchors are contained, returns the contents of the first
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-- one encountered.
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function A.extract(input, regex)
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regex = regex or o.anchor().regex
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return input:match(regex)
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end
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return A
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