Support for Maketile.{js,coffee} exported rules (#99)

Existing files or matching globs still take priority over rules,
to avoid loading Maketile when possible.

examples/anim/Maketile.coffee

@@ -0,0 +1,9 @@
+for lang in ['css', 'styl']
+  exports[lang] = do (lang) -> ->
+    svgtiler """
+      -f css-anim.#{lang}
+      ( shapes.coffee css-anim.csv )
+      ( ascii.coffee ascii.asc )
+    """
+
+export default exports.css

examples/chess/Maketile.coffee

@@ -0,0 +1,11 @@
+export coffee = ->
+  svgtiler '-f map.coffee *.asc'
+export js = ->
+  svgtiler '-f map.jsx *.asc'
+export graph = ->
+  svgtiler '-f -O graph-\* map.coffee graph.coffee *.asc'
+
+export default ->
+  coffee()
+  js()
+  graph()

examples/mario/Maketile.coffee

@@ -1,28 +1,25 @@
 palettes = ['castle', 'overworld', 'underground', 'underwater']
 
+## Define individual palette rules and a default rule that builds them all.
+for palette in palettes
+  exports[palette] = do (palette) -> ->
+    svgtiler "-f -s palette=#{palette} -O *_#{palette} mario.coffee door.tsv"
+
 export default ->
+  for palette in palettes
+    exports[palette]()
+
+## Example definition of just the "everything" rule.
+export simple = ->
   for palette in palettes
     svgtiler "-f -s palette=#{palette} -O *_#{palette} mario.coffee door.tsv"
 
-export singleRule = ->
+## Example definition using just s single call to svgtiler()
+export singleCall = ->
   svgtiler '''
     -f
     ( -s palette=castle -O *_castle mario.coffee door.tsv )
     ( -s palette=overworld -O *_overworld mario.coffee door.tsv )
     ( -s palette=underground -O *_underground mario.coffee door.tsv )
     ( -s palette=underwater -O *_underwater mario.coffee door.tsv )
   '''
-
-###
-castle:
-	svgtiler -f -s palette=castle -O \*_castle mario.coffee door.tsv
-
-overworld:
-	svgtiler -f -s palette=overworld -O \*_overworld mario.coffee door.tsv
-
-underground:
-	svgtiler -f -s palette=underground -O \*_underground mario.coffee door.tsv
-
-underwater:
-	svgtiler -f -s palette=underwater -O \*_underwater mario.coffee door.tsv
-###

examples/polyomino/Maketile.coffee

@@ -0,0 +1,9 @@
+langs = ['cjsx', 'jsx', 'coffee']
+
+for lang in langs
+  exports[lang] = do (lang) -> ->
+    svgtiler "-f outlines.#{lang} *.asc"
+
+export default ->
+  for lang in langs
+    exports[lang]()

examples/tetris/Maketile.coffee

@@ -0,0 +1,9 @@
+export txt = ->
+  svgtiler '-f -P --bg black NES_level7.txt example.asc'
+
+export coffee = ->
+  svgtiler '-f -P NES_level7.coffee example.asc'
+
+export default ->
+  txt()
+  coffee()

examples/tilt/Maketile.coffee

@@ -0,0 +1,9 @@
+langs = ['coffee', 'txt']
+
+for lang in langs
+  exports[lang] = do (lang) -> ->
+    svgtiler "-f --tw 50 --th 50 tilt.#{lang} *.asc *.csv"
+
+export default ->
+  for lang in langs
+    exports[lang]()

examples/witness/Maketile.args

@@ -0,0 +1 @@
+-f witness.coffee *.ssv *.asc

src/svgtiler.coffee

@@ -2385,7 +2385,7 @@ main = (args = process.argv[2..]) ->
   showHelp = 'No filename arguments and no Maketile to run; showing --help'
   maketile = null
   ranMaketile = false
-  numFiles = 0
+  numFileArgs = 0
   formats = []
   settings = cloneSettings defaultSettings, true
   inits = []  # array of objects to call doInit() on
@@ -2395,7 +2395,7 @@ main = (args = process.argv[2..]) ->
   loop
     ## Automatically run Maketile if we're out of arguments
     ## and haven't processed any files yet.
-    if i >= args.length and not numFiles and not ranMaketile and
+    if i >= args.length and not numFileArgs and not ranMaketile and
        (maketile ?= loadMaketile settings)?
       ranMaketile = true
       if maketile instanceof Args
@@ -2516,17 +2516,27 @@ main = (args = process.argv[2..]) ->
           init.doInit() for init in inits
       else
         showHelp = false
+        numFileArgs++
+        ## If argument is not a string (e.g. Mapping or Style),
+        ## or is a string that corresponds to an existing filename.
+        ## process it directly.
         exists = typeof arg != 'string' or inputCache.has arg
         unless exists
           try
             exists = fs.statSync arg
         if exists
           files = [arg]
+        ## Otherwise, try matching as a glob pattern.
+        else if (files = glob arg).length
+        ## Otherwise, check for a matching rule in the Maketile.
         else
-          files = glob arg
+          maketile ?= loadMaketile settings
+          if maketile?.module.hasOwnProperty arg
+            maketile.module[arg]()
+          else
+            console.warn "No files or Maketile rules match '#{arg}'"
         append = i+1  # where to append Args
         for file in files
-          numFiles++
           if typeof file == 'string'
             cached = inputCache.has file
             console.log '*', file, if cached then '(cached)' else ''