From 32b085252affd98e0c4ed4bb2ec0748579e6bb56 Mon Sep 17 00:00:00 2001
From: Philipp Gesang <pgesang@ix.urz.uni-heidelberg.de>
Date: Wed, 15 Sep 2010 16:17:48 +0200
Subject: context (ctx) and lua directives

---
 rst_context.lua | 40 +++++++++++++++++++++++++++++++++-------
 rst_parser.lua  |  6 +++++-
 2 files changed, 38 insertions(+), 8 deletions(-)

diff --git a/rst_context.lua b/rst_context.lua
index 36dbdfc..d92a33d 100644
--- a/rst_context.lua
+++ b/rst_context.lua
@@ -210,7 +210,7 @@ end
 
 function rst_context.substitution_reference (str)
     rst_context.addsetups("substitutions")
-    return [[{\\RSTsubstitution]] .. string.strip(str) .. "}"
+    return [[{\\RSTsubstitution]] .. str:gsub("%s", "") .. "}"
 end
 
 function rst_context.escape (str)
@@ -1047,7 +1047,8 @@ end
 function optional_setups.substitutions ()
     local images_done = {}
 
-    local image = function(name, data)
+    local directives = {}
+    directives.image = function(name, data)
         local img = ""
         if not images_done[name] then
             img = img .. string.format([[
@@ -1063,20 +1064,45 @@ function optional_setups.substitutions ()
         return img
     end
 
+    directives.ctx = function(name, data)
+        local ctx = string.format([[
+
+\startbuffer[%s]
+%s
+\stopbuffer
+\def\RSTsubstitution%s{
+  \getbuffer[%s]
+}
+]], name, data, name, name)
+        return ctx
+    end
+
+    directives.lua = function(name, data)
+        local luacode = string.format([[
+
+\startbuffer[%s]
+\startluacode
+%s
+\stopluacode
+\stopbuffer
+\def\RSTsubstitution%s{%%
+  \getbuffer[%s]%%
+}
+]], name, data, name, name)
+        return luacode
+    end
+
     local substitutions = [[
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 % Substitutions                                                 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
 ]]
     local rs = rst_context.substitutions
     for name, content in next, rs do
         local directive, data = content.directive, content.data
-        name, data = string.strip(name), string.strip(data)
-        if string.strip(directive) == "image" then
-            substitutions = substitutions .. image(name, data)
-        end
+        name, data = name:gsub("%s", ""), string.strip(data)
+        substitutions = substitutions .. directives[directive](name, data)
     end
     return substitutions
 end
diff --git a/rst_parser.lua b/rst_parser.lua
index dd20354..1ef0aa0 100644
--- a/rst_parser.lua
+++ b/rst_parser.lua
@@ -128,6 +128,10 @@ local parser = P{
                     --+ V"comment block"
                     ,
 
+    explicit_markup_block = V"explicit_markup"^1
+                          * V"end_block"
+                          ,
+
 --------------------------------------------------------------------------------
 -- Substitution definition block
 --------------------------------------------------------------------------------
@@ -140,7 +144,7 @@ local parser = P{
                             * C((1 - V"colon" - V"space" - V"eol")^1) -- directive
                             * V"double_colon"
                             * C(V"data_directive_block")
-                            * V"end_block"
+                            * V"blank_line"^-1
                             / rst.substitution_definition
                             ,
 
-- 
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