Super refactor.

README.md

@@ -19,9 +19,9 @@ margin: 0;
 float: left;
 ```
 
-See [css.snippets][css] for a full list of snippets.
+See [this list][list] for a full list of snippets.
 
-[css]: https://github.com/rstacruz/vim-ultisnips-css/blob/master/UltiSnips/css.snippets
+[list]: https://github.com/rstacruz/vim-ultisnips-css/blob/master/snips.yml
 
 You'll need
 -----------
@@ -49,6 +49,11 @@ Installation via Vim without Vundle/Pathogen
 
 It's possible but I won't even tell you how to. Do yourself a favor and start using Vundle or Pathogen.
 
+Contributing
+------------
+
+Just edit the YML file, don't edit the snippet files themselves.
+
 Acknowledgements
 ----------------
 

Rakefile

@@ -1,11 +1,115 @@
 desc "Make the sass/scss snippets"
+
 task :build do
-  str = File.read('UltiSnips/css.snippets')
-  str.gsub!(/;/, '')
-  str.gsub!(/ \{$/, '')
-  str.gsub!(/^\}$/, '')
-  str.gsub!('@include ', '+')
-
-  puts "+ UltiSnips/sass.snippets"
-  File.open('UltiSnips/sass.snippets', 'w') { |f| f.write str }
+  require 'yaml'
+  data = YAML::load_file('snips.yml')
+  snips = Snippets.new(data)
+
+  [:css, :sass, :scss, :stylus].each do |format|
+    fn = "UltiSnips/#{format}.snippets"
+    puts fn
+    File.open(fn, 'w') { |f| f.write snips.to_s(format) }
+  end
+end
+
+class Snippets
+  def initialize(snips)
+    @snips = snips
+  end
+
+  def to_s(format)
+    out = []
+
+    out += @snips['simple'].map do |key, val|
+      block \
+        name: key,
+        desc: to_desc(val),
+        snip: to_snippet(val, format)
+    end
+
+    out += @snips['expressions'].map do |key, val|
+      block \
+        name: key,
+        desc: to_desc(val),
+        snip: unplaceholder(val)
+    end
+
+    if format == :sass || format == :scss
+      out += @snips['sass-expressions'].map do |key, val|
+        block \
+          name: key,
+          desc: to_desc(val),
+          snip: unplaceholder(val)
+      end
+    end
+
+    if format == :stylus
+      out += @snips['stylus-expressions'].map do |key, val|
+        block \
+          name: key,
+          desc: to_desc(val),
+          snip: unplaceholder(val)
+      end
+    end
+
+    out += @snips['media'].map do |key, val|
+      block \
+        name: key,
+        desc: val,
+        snip: (brackety?(format) ? val.gsub(') ', ') { ') : val)
+    end
+
+    out += @snips['css3'].map do |key, val|
+      block \
+        name: key,
+        desc: to_desc(val),
+        snip: to_snippet(val, format, true)
+    end
+
+
+    out.join("\n\n")
+  end
+
+private
+
+  def brackety?(format)
+    format == :css || format == :scss
+  end
+
+  def to_desc(snippet)
+    snippet.gsub(/\{(.*?)\}/, '___')
+  end
+
+  def unplaceholder(snippet)
+    i = 0
+    snippet.gsub(/\{(.*?)\}/) { |placeholder| "${#{i += 1}:#{placeholder[1...-1]}}" }
+  end
+
+  # Turns a raw snippet into a snippet of a given format
+  def to_snippet(value, format, mixinify=false)
+    snippet = value.dup
+
+    snippet.gsub!(/; /, "\n")
+    unplaceholder snippet
+    if mixinify
+      if format == :sass
+        snippet.gsub!(/^(.*?): (.*?)$/, "+\\1(\\2)")
+      elsif format == :scss
+        snippet.gsub!(/^(.*?): (.*?)$/, "@include \\1(\\2)")
+      end
+    end
+
+    snippet.gsub!(/$/, ';')  if brackety?(format)
+
+    snippet
+  end
+
+  # Formats a block
+  def block(options)
+    [
+      "snippet #{options[:name]} \"#{options[:desc]}\"",
+      options[:snip],
+      "endsnippet"
+    ].join("\n")
+  end
 end