chipotle · August 29, 2015 13:57 · Mar 16, 2014 · Jun 19, 2013 · Jun 19, 2013 · Jun 19, 2013
diff --git a/bbcode.lua b/bbcode.lua
@@ -31,7 +31,7 @@ function LineBreak()
 end
 
 function Emph(s)
-  return "[em]" .. s .. "[/em]"
+  return "[i]" .. s .. "[/i]"
 end
 
 function Strong(s)
@@ -55,13 +55,7 @@ function Strikeout(s)
 end
 
 function Link(s, src, tit)
-  local ret = '[url'
-  if s then
-    ret = ret .. '=' .. src
-  else
-    s = src
-  end
-  ret = ret .. "]" .. s .. "[/url]"
+  return '[url=' .. src .. ']' .. s .. '[/url]'
 end
 
 function Image(s, src, tit)
@@ -98,11 +92,11 @@ function Header(lev, s, attr)
 end
 
 function BlockQuote(s)
-  return "[quote]\n" .. s .. "\n[/quote]"
+  return "[quote]" .. s .. "[/quote]"
 end
 
 function HorizontalRule()
-  return "--------------------------------------------------------------------------------"
+  return "+ + +"
 end
 
 function CodeBlock(s, attr)
@@ -167,4 +161,4 @@ meta.__index =
     io.stderr:write(string.format("WARNING: Undefined function '%s'\n",key))
     return function() return "" end
   end
-setmetatable(_G, meta)
+setmetatable(_G, meta)
diff --git a/2bbcode b/2bbcode
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+format=${1:-markdown_github}
+
+exec pandoc -f $format -t ~/bin/bbcode.lua
diff --git a/bbcode.lua b/bbcode.lua
@@ -94,7 +94,7 @@ end
 
 -- lev is an integer, the header level.
 function Header(lev, s, attr)
-  return "[b]" .. s .. "[/b]"
+  return "[h]" .. s .. "[/h]"
 end
 
 function BlockQuote(s)

diff --git a/bbcode.lua b/bbcode.lua
@@ -0,0 +1,170 @@
+-- Invoke with: pandoc -t sample.lua
+
+-- Blocksep is used to separate block elements.
+function Blocksep()
+  return "\n\n"
+end
+
+-- This function is called once for the whole document. Parameters:
+-- body, title, date are strings; authors is an array of strings;
+-- variables is a table.  One could use some kind of templating
+-- system here; this just gives you a simple standalone HTML file.
+function Doc(body, title, authors, date, variables)
+  return body .. '\n'
+end
+
+-- The functions that follow render corresponding pandoc elements.
+-- s is always a string, attr is always a table of attributes, and
+-- items is always an array of strings (the items in a list).
+-- Comments indicate the types of other variables.
+
+function Str(s)
+  return s
+end
+
+function Space()
+  return " "
+end
+
+function LineBreak()
+  return "\n"
+end
+
+function Emph(s)
+  return "[em]" .. s .. "[/em]"
+end
+
+function Strong(s)
+  return "[b]" .. s .. "[/b]"
+end
+
+function Subscript(s)
+  error("Subscript isn't supported")
+end
+
+function Superscript(s)
+  error("Superscript isn't supported")
+end
+
+function SmallCaps(s)
+  error("SmallCaps isn't supported")
+end
+
+function Strikeout(s)
+  return '[del]' .. s .. '[/del]'
+end
+
+function Link(s, src, tit)
+  local ret = '[url'
+  if s then
+    ret = ret .. '=' .. src
+  else
+    s = src
+  end
+  ret = ret .. "]" .. s .. "[/url]"
+end
+
+function Image(s, src, tit)
+  return "[img=" .. tit .. "]" .. src .. "[/img]"
+end
+
+function Code(s, attr)
+  return "[u]" .. s .. "[/u]"
+end
+
+function InlineMath(s)
+  error("InlineMath isn't supported")
+end
+
+function DisplayMath(s)
+  error("DisplayMath isn't supported")
+end
+
+function Note(s)
+  error("Note isn't supported")
+end
+
+function Plain(s)
+  return s
+end
+
+function Para(s)
+  return s
+end
+
+-- lev is an integer, the header level.
+function Header(lev, s, attr)
+  return "[b]" .. s .. "[/b]"
+end
+
+function BlockQuote(s)
+  return "[quote]\n" .. s .. "\n[/quote]"
+end
+
+function HorizontalRule()
+  return "--------------------------------------------------------------------------------"
+end
+
+function CodeBlock(s, attr)
+    return "[code]\n" .. s .. '\n[/code]'
+end
+
+function BulletList(items)
+  local buffer = {}
+  for _, item in ipairs(items) do
+    table.insert(buffer, "[*]" .. item)
+  end
+  return "[list]\n" .. table.concat(buffer, "\n") .. "\n[/list]"
+end
+
+function OrderedList(items)
+  local buffer = {}
+  for _, item in ipairs(items) do
+    table.insert(buffer, "[*]" .. item)
+  end
+  return "[list=1]\n" .. table.concat(buffer, "\n") .. "\n[/list]"
+end
+
+-- Revisit association list STackValue instance.
+function DefinitionList(items)
+  local buffer = {}
+  for _, item in pairs(items) do
+    for k, v in pairs(item) do
+      table.insert(buffer, "[b]" .. k .. "[/b]:\n" ..
+                        table.concat(v, "\n"))
+    end
+  end
+  return table.concat(buffer, "\n")
+end
+
+-- Convert pandoc alignment to something HTML can use.
+-- align is AlignLeft, AlignRight, AlignCenter, or AlignDefault.
+function html_align(align)
+  if align == 'AlignLeft' then
+    return 'left'
+  elseif align == 'AlignRight' then
+    return 'right'
+  elseif align == 'AlignCenter' then
+    return 'center'
+  else
+    return 'left'
+  end
+end
+
+-- Caption is a string, aligns is an array of strings,
+-- widths is an array of floats, headers is an array of
+-- strings, rows is an array of arrays of strings.
+function Table(caption, aligns, widths, headers, rows)
+  error("Table isn't supported")
+end
+
+-- The following code will produce runtime warnings when you haven't defined
+-- all of the functions you need for the custom writer, so it's useful
+-- to include when you're working on a writer.
+local meta = {}
+meta.__index =
+  function(_, key)
+    io.stderr:write(string.format("WARNING: Undefined function '%s'\n",key))
+    return function() return "" end
+  end
+setmetatable(_G, meta)
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