From ccdab803c82f40b47f96ddbf89f746fe5c6cfec5 Mon Sep 17 00:00:00 2001
From: the lemons <citrons@mondecitronne.com>
Date: Wed, 9 Feb 2022 00:41:02 -0600
Subject: improve #redirect; remove #pagetitle

the #redirect directive will now behave differently. pages containing
the directives will be actually created, but their content and actions
will be identical. however, the title, which should indicate the last
performed action, will now do so correctly for redirect pages.
---
 zzcxz.cgi | 66 ++++++++++++++++++++++++++++++++++-----------------------------
 1 file changed, 36 insertions(+), 30 deletions(-)

diff --git a/zzcxz.cgi b/zzcxz.cgi
index 6ed7e32..c6b2816 100755
--- a/zzcxz.cgi
+++ b/zzcxz.cgi
@@ -154,10 +154,6 @@ local function parse_directive(line, directives)
 	directive = directive and directive:lower()
 	if not directive then
 		return
-	elseif directive == "pagetitle" then
-		if args:match "^%s*$" then return end
-		if utf8.len(args) > 150 then return end
-		directives.title = args
 	elseif directive == "redirect" then
 		local redirect = args:match "^%s*(%w%w%w%w%w)%s*$"
 		if not redirect then return end
@@ -180,7 +176,21 @@ local function convert_markup(m)
 			end
 			if line:sub(1,1) == '#' and
 					parse_directive(line, directives) then
-				goto continue
+				if directives.redirect then
+					local to = load_page(directives.redirect)
+					if to then
+						local m, d = convert_markup(to.content)
+						-- the final destination will not have a redirect
+						-- value in this directive. as such, this will store
+						-- final destination of a chain of redirects.
+						d.redirect = d.redirect or to
+						return m, d
+					else
+						directives.redirect = nil
+					end
+				else
+					goto continue
+				end
 			end
 
 			line = html_encode(line)
@@ -244,18 +254,13 @@ function load_page(p, raw)
 	f:close()
 	if not s then return nil end
 	if raw then return s end
-	return parse_page(s)
+	local page = parse_page(s)
+	page.id = p
+	return page
 end
 
 local function new_action(page, action, result)
 	local _, directives = convert_markup(result)
-	local old = assert(io.open('content/'..page, 'a'))
-
-	if directives.redirect then
-		assert(old:write(('%s:%s\n'):format(directives.redirect, action)))
-		old:close()
-		return directives.redirect
-	end
 
 ::generate_name::
 	local new_name = {}
@@ -270,10 +275,11 @@ local function new_action(page, action, result)
 		goto generate_name
 	end
 
+	local old = assert(io.open('content/'..page, 'a'))
 	local new = assert(io.open('content/'..new_name, 'w'))
 
 	action = action:gsub('\n', ' ')
-	assert(new:write((directives.title or action)..'\n'))
+	assert(new:write(action..'\n'))
 	for line in (result..'\n'):gmatch "(.-\n)" do
 		assert(new:write('\t' .. line))
 	end
@@ -342,7 +348,7 @@ local draw_this = [[
 map["^/g/(%w%w%w%w%w)$"] = function(p)
 	local page = load_page(p)
 	if not page then return not_found() end
-	local _, directives = convert_markup(page.content)
+	local content, directives = convert_markup(page.content)
 
 	if env "REQUEST_METHOD" ~= "POST" then
 		if history[#history] ~= p then
@@ -352,6 +358,12 @@ map["^/g/(%w%w%w%w%w)$"] = function(p)
 			table.remove(history, 1)
 		end
 
+		local title = page.title
+
+		if directives.redirect then
+			page = directives.redirect
+		end
+
 		local actions = {}
 		for _,a in ipairs(page.actions) do
 			table.insert(actions,
@@ -362,7 +374,7 @@ map["^/g/(%w%w%w%w%w)$"] = function(p)
 			table.insert(actions,
 				([[
 					<li><a class="important" href="%s/act#what">%s</a></li>
-				]]):format(p, #page.actions == 0 and
+				]]):format(page.id, #page.actions == 0 and
 					"do something..." or "do something else...")
 			)
 		end
@@ -371,7 +383,7 @@ map["^/g/(%w%w%w%w%w)$"] = function(p)
 		if page.illustration then
 			illustration = ([[
 				<img class="illustration" src="/i/%s.%s" />
-			]]):format(p, page.illustration)
+			]]):format(page.id, page.illustration)
 		else
 --			draw_this = ([[
 --				<p id="draw-this"><a href="%s/illustrate">
@@ -384,12 +396,11 @@ map["^/g/(%w%w%w%w%w)$"] = function(p)
 			:format(table.concat(history, ',')..',')
 
 		return base {
-			title = html_encode(page.title),
+			title = html_encode(title),
 			content = page_template {
-				title = html_encode(page.title),
-				content = convert_markup(page.content),
+				title = html_encode(title),
+				content = content,
 				actions = table.concat(actions),
-				page = p,
 				illustration = illustration,
 				drawthis = draw_this,
 				log = show_hist(),
@@ -483,15 +494,10 @@ map["^/g/(%w%w%w%w%w)/act$"] = function(p)
 				html_encode(form.wyd)
 
 		if prev_direct.redirect then
-			local redirect_page = load_page(prev_direct.redirect)
-			if redirect_page then
-				local note =
-					('<span class="note">previewing %s</span>')
-						:format(prev_direct.redirect)
-				prev = note..convert_markup(redirect_page.content)
-			else
-				prev = '<span class="note">invalid redirect!</span>'
-			end
+			local note =
+				('<span class="note">previewing %s</span>')
+					:format(prev_direct.redirect.id)
+			prev = note..prev
 		end
 		
 		return base {
-- 
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