108 lines
2.4 KiB
Lua
108 lines
2.4 KiB
Lua
----------------------------------- LITERATE ----------------------------------
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-- Types functions extensions
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function string:linearize()
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return self:gsub("\n", "\\\\n")
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end
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-- Variable for all literate stuff
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local lit = {}
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-- Error collector
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lit.e = {}
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-- Grammars
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lit.g = {}
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-- Lexical elements
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lit.newline = lpeg.P"\r"^-1 * lpeg.P"\n"
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lit.space = lpeg.S" \t"
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lit.anyspace = lpeg.S" \t\r\n"
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lit.spot = (1 - lit.anyspace)
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lit.any = (lit.spot + lit.space)
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lit.yaml_header = lit.space^0 * lpeg.P"---" * lit.space^0 * lit.newline
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lit.yaml_footer = lit.space^0 * lpeg.P"..." * lit.space^0 * lit.newline^-1
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lit.yaml_body = -lit.yaml_footer * lit.any^0 * lit.newline
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lit.id = lpeg.R("az", "AZ") * lpeg.R("az", "AZ", "09")^0
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lit.ref = lpeg.P"#" * lit.id
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-- Blocks grammar
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lit.g.block = lpeg.P {
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"Block";
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Block = lpeg.Ct(lpeg.V"YAML" * lpeg.V"Code", "name");
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YAML = lpeg.C(lit.yaml_header * lit.yaml_body^0 * lit.yaml_footer);
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Code = lpeg.C((lit.any + lit.newline)^0);
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}
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-- Evals Lisp code
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--[[
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function lit.eval(code)
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local is_passed, out = pcall (
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function () return fennel.eval(code) end,
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function (e) return e end
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)
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local lua = ""
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local out = tostring(out)
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local preview = out:gsub("\n.*", "")
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if is_passed then
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lua = fennel.compileString(code)
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end
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return {is_passed = is_passed, preview = preview, out = out, lua = lua}
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end
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]]--
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function lit.debug_level(str)
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if str == "ERROR" then
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return 2
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elseif str == "WARNING" then
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return 1
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else
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return 0
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end
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end
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function lit.puts(msg, level)
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local verbosity = lit.debug_level(PANDOC_STATE.verbosity)
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level = lit.debug_level(level)
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if level >= verbosity then
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print("[" .. PANDOC_STATE.verbosity .. "] " .. msg)
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end
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end
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function lit.add_error(err)
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end
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function lit.check_yaml(raw_yaml)
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local yaml = io.popen("pandoc -t json <<<\"" .. raw_yaml .. "\" 2>&1")
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if yaml:read("*l"):sub(1, 1) == "{" then
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yaml = pandoc.read(raw_yaml)
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return yaml
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else
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lit.add_error(err)
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return nil
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end
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end
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function lit.check_block(parsed)
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lit.puts("Parsing " .. table.concat(parsed, "\n"):linearize())
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local yaml = lit.check_yaml(parsed[1])
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return "TODO"
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end
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function lit.parse_blocks(codeblock)
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local parsed = lpeg.match(lit.g.block, codeblock.text)
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local valid = (parsed ~= nil and lit.check_block(parsed) or false)
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return codeblock
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end
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function lit.parse_inserts(code)
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-- print(code)
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return code
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end
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return lit
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