From filter to reader... again

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "opt/luaminify"]
-	path = opt/luaminify
-	url = https://github.com/stravant/LuaMinify.git

README.md

@@ -2,7 +2,7 @@
 
 [Pandoc] is a world famous "swiss-army" document converted. This is because
 Pandoc is also a document parser. Thanks to this capability, this repo is a
-[Pandoc filter] written in [Lua] for [literate] and [natural] programming
+[Pandoc reader] written in [Lua] for [literate] and [natural] programming
 (LNP), i.e.: "[Programming \[...\] as the process of creating works of
 literature][1]".
 
@@ -13,18 +13,18 @@ literature][1]".
 ## Install
 
 1.  Go to [Releases].
-2.  Download the latest version of `literate.min.lua`.
+2.  Download the latest version of `literate.lua`.
 3.  Done!
 
 ## Usage
 
-With `literate.min.lua` downloaded and Pandoc installed, do:
+With `literate.lua` downloaded and Pandoc installed, do:
 
-    pandoc --lua-filter PATH/TO/literate.min.lua -t FORMAT DOC
+    pandoc -f PATH/TO/literate.lua -t FORMAT DOC
 
 For example, if `DOC` is `source.md` and the output `FORMAT` is HTML, do:
 
-    pandoc --lua-filter PATH/TO/literate.min.lua -t html source.md
+    pandoc -f PATH/TO/literate.lua -t html source.md
 
 ## Manual
 
@@ -69,7 +69,7 @@ Literate Pandoc is under [GPLv3].
 Happy hacking :)
 
   [Pandoc]: https://pandoc.org/
-  [Pandoc filter]: https://pandoc.org/lua-filters.html
+  [Pandoc reader]: https://pandoc.org/custom-readers.html
   [Lua]: https://www.lua.org/
   [literate]: https://en.wikipedia.org/wiki/Literate_programming
   [natural]: https://en.wikipedia.org/wiki/Natural-language_programming

opt/luaminify

@@ -1 +0,0 @@
-Subproject commit cce8f5b51bdffd1e0439956ccc308d0e5d164f90

scripts/get_fennel.sh

@@ -2,12 +2,10 @@
 
 # Variables
 NAME="fennel-1.3.0"
-ROOT=$(git rev-parse --show-toplevel)
 URL="https://fennel-lang.org/downloads/$NAME.tar.gz"
 
 # Copies Fennel from release tarball
-cd $ROOT/opt
 curl -O $URL
 tar -xvzf $NAME.tar.gz
-mv $NAME/fennel.lua .
+mv $NAME/fennel.lua opt/
 rm -rf $NAME*

scripts/make_dist.sh

@@ -1,12 +1,11 @@
 # Makes distribution release
 
 # Variables
-NAME="literate.min.lua"
-ROOT=$(git rev-parse --show-toplevel)
-DIST=$ROOT/dist/$NAME
+NAME="literate.lua"
+DIST=dist/$NAME
 LICENSE="--[[
 Literate Pandoc & Fennel Bundle:
-  A Pandoc filter for literate and natural programming
+  A Pandoc reader for literate and natural programming
 Fennel:
   (C) 2016-2023 Calvin Rose and contributors
   License: MIT License https://git.sr.ht/~technomancy/fennel/tree/main/item/LICENSE
@@ -20,15 +19,7 @@ The following code is minified, check Literate Pandoc source for a readable vers
 ]]--"
 
 # Merges Fennel and Literate Pandoc
-head -n -1 $ROOT/opt/fennel.lua > $DIST
+(echo "$LICENSE") > $DIST
+head -n -1 opt/fennel.lua >> $DIST
 echo "local fennel = mod" >> $DIST
-tail -n +11 $ROOT/src/literate.lua >> $DIST
-echo "Bundling complete"
-
-# Minifies code
-cd opt/luaminify
-lua CommandLineMinify.lua $DIST $DIST.tmp
-
-# Adds license
-(echo "$LICENSE" && cat $DIST.tmp) > $DIST
-rm $DIST.tmp
+tail -n +10 src/literate.lua >> $DIST

scripts/test.sh

@@ -1,24 +1,20 @@
 # Makes tests
 
 # Variables
-ROOT=$(git rev-parse --show-toplevel)
-FILTER=$ROOT/src/literate.lua
+NAME=literate.lua
+READER=src/$NAME
 ARGS=()
 
 # Removes unwanted args
 for arg in "$@"; do
   case $arg in 
-    "--dist") FILTER=$ROOT/dist/literate.min.lua ;;
+    "--dist") READER=dist/$NAME ;;
     *) ARGS+=($arg) ;;
   esac
 done
 
-# Moves to tests directory and clears the terminal
-cd $ROOT/tests
-clear
-
 # Checks args
-if [ -z "$*" ]; then
+if [ -z "$ARGS" ]; then
   echo "ERROR: At least one argument is needed. For example:"
   echo "  sh $0 native"
   echo "  sh $0 native markdown"
@@ -29,8 +25,8 @@ fi
 echo "🐾 Starting tests"
 for arg in "$ARGS"; do
   echo && echo "⚗️  Test in '$arg' format:"
-  mds=$'\n\n'`(pandoc -t markdown *.md)`
-  rst=$'\n\n'`(pandoc -t markdown *.rst)`
-  org=$'\n\n'`(pandoc -t markdown *.org)`
-  echo "$mds" "$rst" "$org" | pandoc --lua-filter $FILTER -t $arg
+  mds=$'\n\n'`(pandoc -t markdown tests/*.md)`
+  rst=$'\n\n'`(pandoc -t markdown tests/*.rst)`
+  org=$'\n\n'`(pandoc -t markdown tests/*.org)`
+  echo "$mds" "$rst" "$org" | pandoc -f $READER -t $arg
 done

src/literate.lua

@@ -1,14 +1,13 @@
--- IMPORTANT: for distribution the first 10 lines are changed to:
---   local fennel = mod
--- Initial setup for development:
---   Enables Fennel for Lisp-Lua embeded compatibility
---   Cfr. https://fennel-lang.org
+-------------------------------------------------------------------------------
+-- IMPORTANT: these lines are changed to "local fennel = mod"
+-- IMPORTANT: these line are for development setup
+-- Enables Fennel <https://fennel-lang.org> for Lisp-Lua compatibility
 local src_root = pandoc.path.directory(PANDOC_SCRIPT_FILE)
 local fennel_lua = pandoc.path.join({src_root, "../opt/fennel.lua"})
 package.path = package.path .. ";" .. fennel_lua
 local fennel = require("fennel")
--- IMPORTANT: code for distribution starts after this line.
---[[
+-------------------------------------------------------------------------------
+
 -- Lua LPeg shortcuts
 local P, S, R, Cf, Cc, Ct, V, Cs, Cg, Cb, B, C, Cmt =
   lpeg.P, lpeg.S, lpeg.R, lpeg.Cf, lpeg.Cc, lpeg.Ct, lpeg.V,
@@ -20,49 +19,42 @@ local lbracket = P"("
 local rbracket = P")"
 local word = (1 - (space + lbracket + rbracket))
 
--- Grammar for Pandoc parser that converts:
--- Lisp expression => pandoc.Plain
--- Lisp list => pandoc.Span
--- Lisp atom => pandoc.Str
+-- Grammar
 G = P{
   "Doc";
   Doc = space^0 * Ct(V"SExpr"^0) * space^0 / pandoc.Pandoc; 
   SExpr = (V"List" + V"Atom");
-  List = lbracket * V"SExpr"^0 * rbracket / embed;
+  List = lbracket * V"SExpr"^0 * rbracket;
   Atom = space + V"Word";
   Word = word^1 / pandoc.Str;
 }
-]]--
 
 -- Evals Lisp code
 -- @param code string: code to evaluate
 -- @return table: evaluation result as {bool, string, string, string}
 local function eval(code)
-  is_passed, out = pcall (
+  local is_passed, out = pcall (
     function () return fennel.eval(code) end,
     function (e) return e end
   )
-  lua = ""
-  out = tostring(out)
-  preview = out:gsub("\n.*", "")
+  local lua = ""
+  local out = tostring(out)
+  local preview = out:gsub("\n.*", "")
   if is_passed then
     lua = fennel.compileString(code)
   end
   return {is_passed = is_passed, preview = preview, out = out, lua = lua}
 end
 
-return {
-  {
-    CodeBlock = function (block)
-      if block.classes:includes("eval") then
-        local raw = block.text
-        print("⚙️ ", raw)
-        local res = eval(raw)
-        print("", res["is_passed"], "→", res["preview"])
-        if block.classes:includes("replace") then
-          return pandoc.CodeBlock(res["out"], {code=raw})
-        end
-      end
-    end,
-  }
-}
+-- Calls Pandoc Reader.
+function Reader(input, options)
+  --[[
+  local doc = lpeg.match(G, tostring(input))
+  if options.standalone then
+    return exec(doc)
+  else
+    return doc
+  end
+  ]]--
+  return pandoc.Pandoc(tostring(input))
+end

tests/test.md

@@ -7,7 +7,7 @@ Valid declarations:
 * A declaration: f1() = (+ 1 2 3). All declarations should be print on `--verbose`.
 * f2() = (+ 4 5 6) is another declaration.
 * f3() = (+ 7 8 9)
-* Two declarations: f4() = (- 9 8) and f5() = (- 7 6).
+* Two declarations, one in inline code: f4() = (- 9 8) and `f5() = (- 7 6)`.
 * Two consecutive declarations: f6() = (- 5 4) f7() = (- 3 2).
 * A declaration with one arg: f8(n) = (* #n #n).
 * A declaration with two args: f9(a, b) = (* #a #b).
@@ -26,11 +26,6 @@ Not declarations:
 * f19 = (+ 1 2); misses `()`
 * f20() = + 1 2; misses `()`
 * f21() (+ 1 2); misses `=`
-* `f22() = (+ 1 2)`; inside inline code
-
-```
-f23() = (+ 1 2) inside code block
-```
 
 Overrides `f1()` with warn: f1() = (+ 2 3 4) and it should fail on `--fail-if-warnings`.
 
@@ -41,11 +36,11 @@ Valid calls:
 * A common call: f1(). All calls should be print on `--verbose`.
 * f2() another common call.
 * f3()
-* Two calls: f4() and f5().
+* Two calls, one in inline code: f4() and `f5()`.
 * Two consecutive calls: f6() f7().
 * A call with one arg: f8(2).
 * A call with two args: f9(2, 3).
-* A call with variable number of args: f10("The popular ", "\"Hello,", " ", "", "World!\"").
+* A call with variable number of args: f10("The popular ", "\"Hello, ", "World!\"").
 * A call with args as kwargs: f8(n: 3) and f9(a: 4, b: 5).
 
 Valid calls and data types:
@@ -71,11 +66,6 @@ Not calls:
 * f19(1 2); misses comma separator
 * f20( ); extra space
 * f21({); incomplete data type 
-* `f22()`; inside inline code
-
-```
-f23() inside code block
-```
 
 Invalid calls:
 
@@ -127,7 +117,7 @@ Valid recursion:
 
 Invalid recursion:
 
-* f26(i) = (* f11() i); \f11() not declared.
+* f26(i) = (* f11() i); `f11()` not declared.
 * f27(j) = (* f27(1) f27(2)); infinite loop.
-* f8(n: f11()); \f11() not declared.
+* f8(n: f11()); `f11()` not declared.
 * f8(f8(3)); infinite loop.