103 lines
2.5 KiB
Lua
103 lines
2.5 KiB
Lua
function tostr(t)
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local str = ""
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for k, v in next, t do
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if #str > 0 then
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str = str .. ", "
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end
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if type(k) == "number" then
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str = str .. "[" .. k .. "] = "
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else
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str = str .. tostring(k) .. " = "
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end
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if type(v) == "table" then
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str = str .. "{ " .. tostr(v) .. " }"
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elseif type(v) == "string" then
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str = str .. '"' .. v .. '"'
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else
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str = str .. tostring(v)
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end
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end
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return str
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end
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function trim_ws(s)
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return s:match("^%s*(.*)")
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end
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function count_hypens(s)
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local leftover = s:match("^-*(.*)")
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return string.len(s) - string.len(leftover)
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end
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function pretty_print_slide(slide)
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io.write("{\n")
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if slide.transition then
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io.write(" transition = \"", slide.transition, "\",\n")
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end
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for i = 1, #slide do
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local node = slide[i]
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for j = 0, node.indent do
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io.write(" ")
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end
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io.write("{ ")
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io.write(tostr(node))
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io.write(" },\n")
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end
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io.write("},\n")
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end
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function pretty_print_slides(slides)
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io.write("gSlides = {\n")
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for i = 1, #slides do
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pretty_print_slide(slides[i])
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end
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io.write("}\n")
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end
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function parse_attr(s, lvalue)
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local ts = "^<%s*" .. lvalue .. "%s*=%s*(%a+)%s*>$"
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return s:match(ts)
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end
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function flush(slides, block)
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if #block > 0 then
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slides[#slides + 1] = block
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return {}
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end
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return block
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end
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function parse_file(file)
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local slides = {}
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local block = {}
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for line in file:lines() do
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local s = trim_ws(line)
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if #s == 0 then -- done with a block
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block = flush(slides, block)
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else
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local transition_type = parse_attr(s, "transition")
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local blockstyle = parse_attr(s, "blockstyle")
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if transition_type then
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block["transition"] = transition_type
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elseif blockstyle then
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block["blockstyle"] = blockstyle
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else
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if block.blockstyle == "code" then
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block[#block + 1] = { text = line }
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else
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local n = count_hypens(s)
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block[#block + 1] = {
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indent = n,
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text = trim_ws(s:sub(n + 1, -1))
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}
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end
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end
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end
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end
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flush(slides, block)
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return slides
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end
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