cortav  Diff

	fns = {
		throw = function(me) error(me) end;
	}
}
ct.exnkind = declare {
	ident = 'exn-kind';
	mk = function(desc, report)

		return { desc = desc, report = report }




	end;
	call = function(me, ...)
		return ct.exn(me, ...)
	end;
}

ct.exns = {
	tx = ct.exnkind('translation error', function(msg,...)
		return string.format("(%s:%u) "..msg, ...)
	end)







}

ct.ctx = declare {
	mk = function(src) return {src = src} end;
	ident = 'context';
	cast = {
		string = function(me)
................................................................................
		end

		local span_renderers = {}
		local function htmlSpan(spans, block, sec)
			local text = {}
			for k,v in pairs(spans) do
				if type(v) == 'string' then
					table.insert(text,(v:gsub('[<>&]',
						function(x)
							return string.format('&#%02u', string.byte(x))
						end)))
				else
					table.insert(text, span_renderers[v.kind](v, block, sec))
				end
			end
			return table.concat(text)
		end

		function span_renderers.format(sp)
			local tags = { strong = 'strong', emph = 'em', strike = 'del', insert = 'ins', literal = 'code' }
			if sp.style == 'literal' then
				stylesNeeded.code = true
			end
			if sp.style == 'del' or sp.style == 'ins' then
				stylesNeeded.editors_markup = true
			end
			return tag(tags[sp.style],nil,htmlSpan(sp.spans))
		end
................................................................................

	local styles = {}
	for k in pairs(stylesNeeded) do
		table.insert(styles, (stylesets[k]:gsub('%s+',' ')))
	end

	local head = {}






	if next(styles) then

		table.insert(head, tag('style',{type='text/css'},table.concat(styles)))
	end





	if opts.snippet then
		return body
	else
		return dr.htmlDoc(doctitle, next(head) and table.concat(head), body)
	end
end

local function
startswith(str, pfx)
................................................................................
		if     a1 == ':' and a2 ~= ':' then
			align = 'left'
		elseif a1 == ':' and a2 == ':' then
			align = 'center'
		elseif a1 ~= ':' and a2 == ':' then
			align = 'right'
		end

		table.insert(row, {
			spans = ct.parse_span(text, c);
			align = align;
			header = header;
		})
	end
	if #c.sec.blocks > 1 and c.sec.blocks[#c.sec.blocks].kind == 'table' then
................................................................................
		end
	end

	return ctx.doc
end

local default_mode = {
	format = 'html';

}

























local function main(input, output, log, mode, vars)
	local doc = ct.parse(input.stream, input.src)
	input.stream:close()
	if mode['show-tree'] then
		log:write(dump(doc))
	end

	if not mode.format then
		error 'what output format should i translate the input to?'
	end
	if not ct.render[mode.format] then
		error(string.format('output format “%s” unsupported', mode.format))
	end
	






	output:write(ct.render[mode.format](doc, {}))
end

local inp,outp,log = io.stdin, io.stdout, io.stderr

local function entry_cli()
	local mode, vars, input = default_mode, {}, {
		stream = inp;
		src = {
			file = '(stdin)';
		}
	}

	if arg[1] and arg[1] ~= '' then
































































































		local file = io.open(arg[1], "rb")
		if not file then error('unable to load file ' .. arg[1]) end
		input.stream = file
		input.src.file = arg[1]
	end

	main(input, outp, log, mode, vars)
end

-- local ok, e = pcall(entry_cli)
local ok, e = true, entry_cli()

	fns = {
		throw = function(me) error(me) end;
	}
}
ct.exnkind = declare {
	ident = 'exn-kind';
	mk = function(desc, report)
		return {
			desc = desc;
			report = report or function(msg,...)
				return string.format(msg,...)
			end;
		}
	end;
	call = function(me, ...)
		return ct.exn(me, ...)
	end;
}

ct.exns = {
	tx = ct.exnkind('translation error', function(msg,...)
		return string.format("(%s:%u) "..msg, ...)
	end);
	io = ct.exnkind('IO error', function(msg, ...)
		return string.format("<%s %s> "..msg, ...)
	end);
	cli = ct.exnkind 'command line parse error';
	mode = ct.exnkind('bad mode', function(msg, ...)
		return string.format("mode “%s” "..msg, ...)
	end);
}

ct.ctx = declare {
	mk = function(src) return {src = src} end;
	ident = 'context';
	cast = {
		string = function(me)
................................................................................
		end

		local span_renderers = {}
		local function htmlSpan(spans, block, sec)
			local text = {}
			for k,v in pairs(spans) do
				if type(v) == 'string' then
					table.insert(text,(v:gsub('[<>&"]',
						function(x)
							return string.format('&#%02u;', string.byte(x))
						end)))
				else
					table.insert(text, span_renderers[v.kind](v, block, sec))
				end
			end
			return table.concat(text)
		end

		function span_renderers.format(sp)
			local tags = { strong = 'strong', emph = 'em', strike = 'del', insert = 'ins', literal = 'code' }
			if sp.style == 'literal' and not opts['fossil-uv'] then
				stylesNeeded.code = true
			end
			if sp.style == 'del' or sp.style == 'ins' then
				stylesNeeded.editors_markup = true
			end
			return tag(tags[sp.style],nil,htmlSpan(sp.spans))
		end
................................................................................

	local styles = {}
	for k in pairs(stylesNeeded) do
		table.insert(styles, (stylesets[k]:gsub('%s+',' ')))
	end

	local head = {}
	local styletag = ''
	if opts['link-css'] then
		local css = opts['link-css']
		if type(css) ~= 'string' then ct.exns.mode('must be a string', 'html:link-css'):throw() end
		styletag = styletag .. elt('link',{rel='stylesheet',type='text/css',href=opts['link-css']})
	end
	if next(styles) then
		if opts['gen-styles'] then
			styletag = styletag .. tag('style',{type='text/css'},table.concat(styles))
		end
		table.insert(head, styletag)
	end

	if opts['fossil-uv'] then
		return tag('div',{class='fossil-doc',['data-title']=doctitle},styletag .. body)
	elseif opts.snippet then
		return styletag .. body
	else
		return dr.htmlDoc(doctitle, next(head) and table.concat(head), body)
	end
end

local function
startswith(str, pfx)
................................................................................
		if     a1 == ':' and a2 ~= ':' then
			align = 'left'
		elseif a1 == ':' and a2 == ':' then
			align = 'center'
		elseif a1 ~= ':' and a2 == ':' then
			align = 'right'
		end
		text = text:match '^%s*(.-)%s*$'
		table.insert(row, {
			spans = ct.parse_span(text, c);
			align = align;
			header = header;
		})
	end
	if #c.sec.blocks > 1 and c.sec.blocks[#c.sec.blocks].kind == 'table' then
................................................................................
		end
	end

	return ctx.doc
end

local default_mode = {
	['render:format'] = 'html';
	['html:gen-styles'] = true;
}

local function filter(list, fn)
	local new = {}
	for i, v in ipairs(list) do
		if fn(v,i) then table.insert(new, v) end
	end
	return new
end

local function kmap(fn, list)
	local new = {}
	for k, v in pairs(list) do
		local nk,nv = fn(k,v)
		new[nk or k] = nv or v
	end
	return new
end
local function kfilter(list, fn)
	local new = {}
	for k, v in pairs(list) do
		if fn(k,v) then new[k] = v end
	end
	return new
end

local function main(input, output, log, mode, vars)
	local doc = ct.parse(input.stream, input.src)
	input.stream:close()
	if mode['parse:show-tree'] then
		log:write(dump(doc))
	end

	if not mode['render:format'] then
		error 'what output format should i translate the input to?'
	end
	if not ct.render[mode['render:format']] then
		error(string.format('output format “%s” unsupported', mode['render:format']))
	end
	
	local render_opts = kmap(function(k,v)
		return k:sub(2+#mode['render:format'])
	end, kfilter(mode, function(m)
		return startswith(m, mode['render:format']..':')
	end))

	output:write(ct.render[mode['render:format']](doc, render_opts))
end

local inp,outp,log = io.stdin, io.stdout, io.stderr

local function entry_cli()
	local mode, vars, input = default_mode, {}, {
		stream = inp;
		src = {
			file = '(stdin)';
		}
	}


	local optnparams = function(o)
		local param_opts = {
			out = 1;
			log = 1;
			define = 2; -- key value
			['mode-set'] = 1;
			['mode-clear'] = 1;
			mode = 2;
		}
		return param_opts[o] or 0
	end

	local optmap = {
		o = 'out';
		l = 'log';
		d = 'define';
		V = 'version';
		h = 'help';
		y = 'mode-set', n = 'mode-clear';
		m = 'mode';
	}

	local checkmodekey = function(key)
		if not key:match '[^:]+:.+' then
			ct.exns.cli('invalid mode key %s', key):throw()
		end
		return key
	end
	local onswitch = {
		out = function(file)
			local nf = io.open(file,'wb')
			if nf then outp:close() outp = nf else
				ct.exns.io('could not open output file for writing', 'open',file):throw()
			end
		end;
		log = function(file)
			local nf = io.open(file,'wb')
			if nf then log:close() log = nf else
				ct.exns.io('could not open log file for writing', 'open',file):throw()
			end
		end;
		define = function(key,value)
			-- set context key
		end;
		mode = function(key,value) mode[checkmodekey(key)] = value end;
		['mode-set'] = function(key) mode[checkmodekey(key)] = true end;
		['mode-clear'] = function(key) mode[checkmodekey(key)] = false end;
	}

	local args = {}
	local keepParsing = true
	do local i = 1 while i <= #arg do local v = arg[i]
		local execLongOpt = function(longopt)
			if not onswitch[longopt] then
				ct.exns.cli('switch --%s unrecognized', longopt):throw()
			end
			local nargs = optnparams(longopt)

			if nargs > 1 then
				if i + nargs > #arg then
					ct.exns.cli('not enough arguments for switch --%s (%u expected)', longopt, nargs):throw()
				end
				local nt = {}
				for j = i+1, i+nargs do
					table.insert(nt, arg[j])
				end
				onswitch[longopt](table.unpack(nt))
			elseif nargs == 1 then
				onswitch[longopt](arg[i+1])
			end
			i = i + nargs
		end
		if v == '--' then
			keepParsing = false
		else
			local longopt = v:match '^%-%-(.+)$'
			if keepParsing and longopt then
				execLongOpt(longopt)
			else
				if keepParsing and v:sub(1,1) == '-' then
					for c,p in eachcode(v:sub(2)) do
						if optmap[c] then
							execLongOpt(optmap[c])
						else
							ct.exns.cli('switch -%i unrecognized', c):throw()
						end
					end
				else
					table.insert(args, v)
				end
			end

		end
	i = i + 1 end end

	if args[1] and args[1] ~= '' then
		local file = io.open(arg[1], "rb")
		if not file then error('unable to load file ' .. args[1]) end
		input.stream = file
		input.src.file = args[1]
	end

	main(input, outp, log, mode, vars)
end

-- local ok, e = pcall(entry_cli)
local ok, e = true, entry_cli()