Merge pull request #33 from kragen/master

search engine: first draft of code and also (slightly desynchronized) chapter text!

README.md

@@ -127,6 +127,14 @@ Contributors
     <td><a href="https://github.com/taavi">taavi</a></td>
     <td>taavi.burns@gmail.com</td>
   </tr>
+  <tr>
+    <td>Kragen Javier Sitaker</td>
+    <td><a href="http://canonical.org/">Canonical Hackers</a></td>
+    <td>search-engine</td>
+    <td>@kragen</td>
+    <td>@kragen</td>
+    <td>kragen@canonical.org</td>
+  </tr>
   <tr>
     <td>Guido van Rossum</td>
     <td>Dropbox</td>

search-engine/.gitignore

@@ -0,0 +1,4 @@
+build_handaxeweb.new
+handaxeweb2.lua
+handaxeweb3.lua
+handaxeweb4.lua

search-engine/Makefile

@@ -0,0 +1,28 @@
+all: handaxeweb.lua build_handaxeweb index.py skiplist.svg skipfiles.svg
+
+# The dependencies of these two targets are a little bit bogus,
+# because actually handaxeweb.lua has a circular dependency on itself
+# and is also mutually dependent with build_handaxeweb, which also has
+# a circular dependency on itself.  But really they are both rebuilt
+# (bootstrapped using themselves!) from handaxeweb.md.  Just don't
+# delete them as if they were normal derived objects, and occasionally
+# touch handaxeweb.md and do a second rebuild if you're taking
+# advantage of new handaxeweb features in build_handaxeweb, and you'll
+# be fine.
+
+handaxeweb.lua: handaxeweb.md
+	./build_handaxeweb
+
+build_handaxeweb: handaxeweb.md
+	./$@
+
+.PRECIOUS: handaxeweb.lua build_handaxeweb
+
+index.py: README.md handaxeweb.lua
+	./handaxeweb.lua $@ < $< > $@
+
+skiplist.svg: skipdiagram.py
+	./$< skiplist > $@
+
+skipfiles.svg: skipdiagram.py
+	./$< skipfiles > $@