bundle binary files as URLs

1 files changed, 155 insertions, 0 deletions

diff --git a/build/bundle_fileder.moon b/build/bundle_fileder.moon
new file mode 100644
index 0000000..c9f8c35
--- /dev/null
+++ b/build/bundle_fileder.moon
@@ -0,0 +1,155 @@
+require 'mmm'
+import get_path from require 'build.util'
+import Fileder, Key from require 'mmm.mmmfs.fileder'
+import opairs from require 'mmm.ordered'
+import to_lua from require 'moonscript.base'
+
+-- usage:
+-- moon bundle_fileder.moon <path_to_root> <dirname> <facets>... -- <children>...
+{ path_to_root, dirname } = arg
+
+assert path_to_root, "please specify the relative root path"
+assert dirname, "please specify the fileder dirname"
+path = get_path path_to_root
+
+facets = {}
+children_bundles = {}
+
+do
+  addto = facets
+  for file in *arg[3,]
+    continue if file == 'Tupdefault.lua'
+
+    if file == '--'
+      addto = children_bundles
+      continue
+    table.insert addto, file
+
+-- load a fs file as a fileder facet
+load_facet = (filename) ->
+  key = (filename\match '(.*)%.%w+') or filename
+  key = Key key\gsub '%$', '/'
+  key.filename = filename
+
+  file = assert (io.open filename, 'r'), "couldn't open facet file '#{filename}'"
+  value = file\read '*all'
+  file\close!
+
+  key, value
+
+-- escape a string for lua aparser
+escape = (str) -> string.format '%q', tostring str
+
+-- dump a fileder subtree as Lua source
+dump_fileder = do
+  _dump = (fileder, root=false) ->
+    code = "Fileder {"
+
+    for key, val in pairs fileder.facets
+      if key.original
+        key = "fromcache(#{escape key}, #{escape key.original})"
+      else
+        key = escape key
+      code ..= "\n[#{key}] = #{escape val},"
+
+    for child in *fileder.children
+      code ..= "\n#{_dump child},"
+
+    code ..= "\n}"
+    code
+
+
+  (fileder) -> "
+local mmmfs = require 'mmm.mmmfs'
+local Key, Fileder = mmmfs.Key, mmmfs.Fileder
+local function fromcache(str, orig)
+  local key = Key(str)
+  key.original = Key(orig)
+  return key
+end
+
+return #{_dump fileder, true}
+  "
+
+renders = {
+  {
+    inp: '^text/moonscript %-> (.*)'
+    out: 'text/lua -> %1'
+    render: (val, fileder, old, new) ->
+      lua, err = to_lua val
+
+      if not lua
+        error "Error compiling #{old}: #{err}"
+
+      "-- this moonscript facet has been transpiled to
+-- '#{new}' for execution in the browser.
+-- refer to the original facet as the source.
+#{lua}"
+  },
+  {
+    inp: '^image/'
+    out: 'URL -> %0'
+    render: (val, fileder, old, new) -> "#{fileder.path}/#{old.filename}", "[binary removed]"
+  },
+  {
+    inp: '^video/'
+    out: 'URL -> %0'
+    render: (val, fileder, old, new) -> "#{fileder.path}/#{old.filename}", "[binary removed]"
+  },
+}
+
+with io.open '$bundle.lua', 'w'
+  \write dump_fileder with fileder = Fileder 'name: alpha': dirname
+    \mount path, true
+
+    order = nil
+    children = {}
+
+    for facet in *facets
+      if facet == '$order'
+        order = [line for line in io.lines facet]
+        continue
+      key, value = load_facet facet
+      .facets[key] = value
+
+    extra_facets = {}
+    for key, value in pairs .facets
+      for { :inp, :out, :render } in *renders
+        continue unless key.type\match inp
+
+        built_key = Key key.name, key.type\gsub inp, out
+        built_key.original = key
+
+        -- dont overwrite existing keys
+        continue if \has built_key
+
+        rendered, replace = render value, fileder, key, built_key
+
+        extra_facets[built_key] = rendered
+        .facets[key] = replace if replace
+
+        break
+
+    for k,v in pairs extra_facets
+      .facets[k] = v
+
+    for child in *children_bundles
+      -- @BUG: child bundles are malformed due to Tup bug ($ symbol)
+      child = child\gsub '/%.lua$', '/$bundle.lua'
+
+      dirname = assert child\match '^([%w-_%.]+)/%$bundle%.lua$'
+      children[dirname] = dofile child
+
+    if order
+      -- order from order file
+      for i, name in pairs order
+        child = assert children[name], "child in $order but not fs: #{name}"
+        table.insert .children, child
+        children[name] = nil
+
+    -- sort remainder alphabeticalally
+    for name, child in opairs children
+      table.insert .children, child
+      warn "child #{name} not in $order!" if order
+
+  \close!