[PATCH] http: standalone require + reduction in binary size

[Eric Wong <e@80x24.org>]

This allows requiring just the C extension part of "unicorn_http",
without requiring the rest of unicorn, allowing other HTTP servers
using the same parser to be slimmer.

On my x86-64 Debian 7.0 system:

    text	   data	    bss	    dec	    hex	filename
   44026	   1976	    488	  46490	   b59a	lib/unicorn_http.so
   43930	   1976	    456	  46362	   b51a	lib/unicorn_http.so
---
 GNUmakefile                      | 5 ++++-
 ext/unicorn_http/httpdate.c      | 2 +-
 ext/unicorn_http/unicorn_http.rl | 2 +-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/GNUmakefile b/GNUmakefile
index d7f0118..4c40dc9 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -85,10 +85,13 @@ test-unit: $(wildcard test/unit/test_*.rb)
 $(slow_tests): $(test_prefix)/.stamp
 	@$(MAKE) $(shell $(awk_slow) $@)
 
+test-require: $(ext)/unicorn_http.$(DLEXT)
+	$(RUBY) --disable-gems -I$(ext) -runicorn_http -e Unicorn
+
 test-integration: $(test_prefix)/.stamp
 	$(MAKE) -C t
 
-check: test test-integration
+check: test-require test test-integration
 test-all: check
 
 TEST_OPTS = -v
diff --git a/ext/unicorn_http/httpdate.c b/ext/unicorn_http/httpdate.c
index bf54fdd..0a1045f 100644
--- a/ext/unicorn_http/httpdate.c
+++ b/ext/unicorn_http/httpdate.c
@@ -66,7 +66,7 @@ static VALUE httpdate(VALUE self)
 
 void init_unicorn_httpdate(void)
 {
-	VALUE mod = rb_const_get(rb_cObject, rb_intern("Unicorn"));
+	VALUE mod = rb_define_module("Unicorn");
 	mod = rb_define_module_under(mod, "HttpResponse");
 
 	buf = rb_str_new(0, buf_capa - 1);
diff --git a/ext/unicorn_http/unicorn_http.rl b/ext/unicorn_http/unicorn_http.rl
index de83652..932d259 100644
--- a/ext/unicorn_http/unicorn_http.rl
+++ b/ext/unicorn_http/unicorn_http.rl
@@ -926,7 +926,7 @@ void Init_unicorn_http(void)
 {
   VALUE mUnicorn, cHttpParser;
 
-  mUnicorn = rb_const_get(rb_cObject, rb_intern("Unicorn"));
+  mUnicorn = rb_define_module("Unicorn");
   cHttpParser = rb_define_class_under(mUnicorn, "HttpParser", rb_cObject);
   eHttpParserError =
          rb_define_class_under(mUnicorn, "HttpParserError", rb_eIOError);
-- 
EW