added mdbrowse and mdparse.

README.md

@@ -1,3 +1,15 @@
 # mdgopher
 
 Gopher + Markdown. Kinda defeats the purpose but hey whatever.
+
+## mdbrowse
+A terrible lua-curses and luasocket based markdown browser.
+
+Gopher menu support is experimental but markdown support should work fairly well.
+
+### keybinds
+- j and k for scrolling
+- f to follow a link (marked by a [number])
+- o to open a URL
+- s for settings (terminal size and etc.)
+- q to quit

mdbrowse.lua

@@ -0,0 +1,245 @@
+local curses = require "curses"
+local md = require "mdparse"
+local socket = require "socket"
+local surl = require "socket.url"
+
+local sx,sy,pc = 80, 25, "@"
+
+local function pgopher(gm)
+ local s = ""
+ for line in gm:gmatch("[^\n]+") do
+  local t = line:sub(1,1)
+  if t == "i" then
+   if line:find("\t") then
+    line=line:sub(1,line:find("\t"))
+   end
+   s=s..line:sub(2).."\n"
+  elseif t == "0" or t == "1" then
+   line=line:gsub("(.)(.+)\t/?([%w%./]+)\t([%w%.]+)\t(%d+)","%1    [%2](gopher://%4:%5/%3")..")" -- we gsub now
+   line=line:gsub("\n","")
+   s=s..line.."\n"
+  else
+   s=s..line.."\n"
+  end
+ end
+ return s
+end
+
+local function geturl(url)
+ local ds = {}
+ ds.scheme = "gopher"
+ ds.port = "70"
+ ds.path = ""
+ local c = ""
+ local ourl = url
+ tURL = surl.parse(url,ds)
+ if not tURL.host then tURL.host = tURL.path tURL.path = "" end
+ local dn, po, pt = tURL.host, tURL.port, tURL.path
+ print(dn,po,pt)
+  if dn and po then
+   local s=socket.tcp()
+   s:connect(dn,po)
+   s:send(pt.."\n")
+   c=s:receive("*a")
+   s:close()
+   local w,tpg = pcall(pgopher,c)
+   if w then
+    print(tpg)
+    c=tpg
+   end
+  else
+   c="Unable to load URL "..ourl
+  end
+--[[--
+ else
+  local f=io.open(url,"rb")
+  if not f then
+   return "\r\nPage could not be loaded."
+  end
+  c=f:read("*a")
+  print(c)
+  f:close()
+ end
+--]]--
+ return c
+end
+
+local function settings()
+ while true do
+  local scr = curses.initscr ()
+ 
+  curses.cbreak ()
+  curses.echo (false)	-- not noecho !
+  curses.nl (false)	-- not nonl !
+  local selection = 1
+  while true do
+   local menu = {"Screen width: "..tostring(sx),"Screen height: "..tostring(sy),"Back"}
+   scr:clear()
+   scr:refresh()
+   for k,v in ipairs(menu) do
+    if k == selection then
+     io.write(" * ")
+    end
+    print("\t"..v.."\r")
+   end
+   local ch = scr:getch()
+   if ch == 66 then
+    selection = selection + 1
+   elseif ch == 65 then
+    selection = selection - 1
+   elseif ch == 13 then break
+   end
+   if selection > #menu then
+    selection = #menu
+   elseif selection < 1 then
+    selection = 1
+   end
+  end
+  if selection == 1 then
+   scr:clear()
+   scr:refresh()
+   scr:addstr("New screen width: ")
+   curses.echo (true)
+   scr:refresh()
+   sx = tonumber(scr:getstr()) or 80
+   curses.echo (false)
+  elseif selection == 2 then
+   scr:clear()
+   scr:refresh()
+   scr:addstr("New screen height: ")
+   curses.echo (true)
+   scr:refresh()
+   sy = tonumber(scr:getstr()) or 80
+   curses.echo (false)
+  else
+   scr:close()
+   break
+  end
+ end
+end
+
+local function main ()
+  local scr = curses.initscr ()
+  local mode = 1
+  local p = false
+  local sc = "#"
+  local history = {}
+
+  curses.cbreak ()
+  curses.echo(false)	-- not noecho !
+  curses.nl(false)	-- not nonl !
+
+  cy = 1
+  local ts = [[
+**SKS Markdown Gopher Client**
+
+See the [SKS gopher hole](gopher://shadowkat.net) for more info.
+
+Use *f* to follow a link, *o* to open a URL directly, *j* and *k* to scroll, and *s* for settings.
+
+Scrolling test:
+a
+b
+c
+d
+e
+f
+g
+h
+i
+j
+k
+l
+m
+n
+o
+p
+q
+r
+s
+t
+u
+v
+w
+x
+y
+z]]
+  local url = "homepage"
+  local lt = {}
+  while true do
+   scr:clear()
+   scr:refresh()
+   local ds = ""
+   local dt = {}
+   lt = md.parse(ts).l
+   for k,v in ipairs(md.parse(ts)) do
+--[[--
+    if v.bold then -- note to self: fix bold
+     v.content = "\27[n1"..v.content.."\27[n0"
+    end
+--]]--
+    if v.addrid then
+     ds=ds.."["..tostring(v.addrid).."]"..v.content
+    else
+     ds=ds..v.content
+    end
+   end
+   for line in ds:gmatch("[^\n]*") do
+    while line:len() > 0 do
+     dt[#dt+1] = line:sub(1,sx)
+     line = line:sub(sx+1)
+    end
+   end
+   if sy < #dt then
+    ms = sy
+   else
+    ms = #dt
+   end
+   for i = cy, cy+ms do
+    io.write((dt[i] or "").."\r\n")
+   end
+   print("\r\n["..url.." "..tostring(cy).."/"..tostring(#dt).." "..tostring(ts:len()).."]\r")
+   ch = scr:getch() or 0
+   if ch < 256 then
+    if string.char(ch) == "q" then
+     break
+    elseif string.char(ch) == "s" then
+     settings()
+    elseif string.char(ch) == "o" then
+     scr:addstr("\rURL: ")
+     curses.echo(true)
+     scr:refresh()
+     local nurl = scr:getstr()
+     local w,nts=pcall(geturl,nurl)
+     --print(w,nts)
+     if w then ts = nts url=nurl end
+     local nurl = scr:getstr()
+    elseif string.char(ch) == "f" then
+     scr:addstr("\rLink: ")
+     curses.echo(true)
+     scr:refresh()
+     local nurl = lt[tonumber(scr:getstr())]
+     local w,nts=pcall(geturl,nurl)
+     if w then ts = nts url=nurl end
+     scr:refresh()
+    elseif string.char(ch) == "j" then
+     if cy < #dt then
+      cy = cy + 1
+     end
+    elseif string.char(ch) == "k" then
+     if cy > 1 then
+      cy = cy - 1
+     end
+    end
+   end
+  end
+end
+
+local function err (err)
+  curses.endwin ()
+  print "Caught an error:"
+  print (debug.traceback (err, 2))
+  os.exit (2)
+end
+
+xpcall (main, err)

mdparse.lua

@@ -0,0 +1,50 @@
+local md = {}
+function md.parse(md)
+ local it = {}
+ it.l = {}
+ it[#it+1] = {["content"]="",["bold"]=false,["italic"]=false}
+ local lc,llc = "",""
+ local function newpart()
+  it[#it+1] = {["content"]="",["bold"]=it[#it].bold,["italic"]=it[#it].italic}
+ end
+ newpart()
+ local lm = false
+ for c in md:gmatch(".") do
+  if c == "*" then
+   if lc == "*" then
+    it[#it].italic = false
+    it[#it].italic = it[#it-1].italic
+    it[#it].bold = not it[#it].bold
+   else
+    newpart()
+    it[#it].italic = not it[#it].italic
+   end
+  elseif c == "[" then
+   newpart()
+  elseif c == "(" and lc == "]" then
+   lm = true
+   it[#it].content = it[#it].content:sub(1,-2)
+   it[#it].address = ""
+  elseif c == ")" and lm then
+   lm = false
+   it.l[#it.l+1] = it[#it].address
+   it[#it].addrid = #it.l
+   newpart()
+  else
+   if not lm then
+    it[#it].content = it[#it].content .. c
+   else
+    it[#it].address = it[#it].address .. c
+   end
+  end
+  llc = lc
+  lc = c
+ end
+ for k,v in pairs(it) do
+  if v.content then
+   v.content = v.content:gsub("\n","\r\n")
+  end
+ end
+ return it
+end
+return md