prompt.lua (f34deee) - memoire

prompt.lua

--[[
    a prompt consists of prompt text (with an answer-insertion point),
    a correct answer, the review timestamp, and the review delay
]]

local Prompt = {}
Prompt.__index = Prompt

--[[
    the answer-insertion point is indicated with a %A in the prompt text
]]
function Prompt:new(pt, ca, rts, rd)
    local o = {}
    setmetatable(o, self)
    o.text = pt
    o.ans = ca
    o.time = tonumber(rts)
    o.delay = tonumber(rd)
    return o
end

function Prompt:__tostring()
    return string.format("\"%s\" (\"%s\") %d+%d", self.text, self.ans, self.time, self.delay)
end

--[[
    extracts prompts from a record-based deck
    returns (on success) a table of Prompts
    returns (on failure) nil
]]
function Prompt:fromrecs(recs)
    local ret = {}
    for _i, rec in ipairs(recs) do
        -- only bother with records with PromptText
        if rec.PromptText then
            local opt = rec.PromptText[1]
            local m, n = opt:find "%{[^%}]+%}"
            local ctr = 1
            while m do
                local mpt = (opt:sub(1, m - 1) .. "%A" .. opt:sub(n + 1)):gsub("%{([^%}]+)%}", "%1")
                table.insert(ret, Prompt:new(mpt, opt:sub(m + 1, n - 1), (rec.LastReview or {})[ctr], (rec.LastDelay)[ctr]))
                m, n = opt:find("%{[^%}]+%}", n)
                ctr = ctr + 1
            end
        end
    end
    return ret
end

return Prompt

memoire

Adds Prompt library