Merge pull request #217 from hsbt/add-install_svn

Support install & build from Subversion repositories. Switch 1.9.3-dev and 2.0.0-dev to svn since the git mirror is no longer maintained.

bin/ruby-build

@@ -96,6 +96,10 @@ install_git() {
   install_package_using "git" 2 $*
 }
 
+install_svn() {
+  install_package_using "svn" 2 $*
+}
+
 install_package_using() {
   local package_type="$1"
   local package_type_nargs="$2"
@@ -159,6 +163,21 @@ fetch_git() {
   fi
 }
 
+fetch_svn() {
+  local package_name="$1"
+  local svn_url="$2"
+  local svn_rev="$3"
+
+  echo "Checking out ${svn_url}..." >&2
+
+  if type svn &>/dev/null; then
+    svn co -r "$svn_rev" "$svn_url" "${package_name}" >&4 2>&1
+  else
+    echo "error: please install \`svn\` and try again" >&2
+    exit 1
+  fi
+}
+
 build_package() {
   local package_name="$1"
   shift

share/ruby-build/1.9.3-dev

 install_package "yaml-0.1.4" "http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz"
-install_git "ruby-1.9.3-dev" "https://github.com/ruby/ruby.git" "ruby_1_9_3" autoconf standard
+install_svn "ruby-1.9.3-dev" "http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_3" "HEAD" autoconf standard

share/ruby-build/2.0.0-dev

 install_package "yaml-0.1.4" "http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz"
-install_git "ruby-2.0.0-dev" "https://github.com/ruby/ruby.git" "trunk" autoconf standard
+install_svn "ruby-2.0.0-dev" "http://svn.ruby-lang.org/repos/ruby/trunk" "HEAD" autoconf standard
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