EXAMPLE: Global hook post-receive example for generic CIA.vc

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diff --git a/example/global-hooks/cia-notify.post-receive.lua b/example/global-hooks/cia-notify.post-receive.lua
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+-- cia-notify.post-receive.lua
+--
+-- Example post-receive global hook which notifies cia.vc on ref updates
+-- which match any of the patterns provided by the project.
+--
+-- It notifies CIA.vc *before* passing the updates on to the project hook.
+--
+-- Copyright 2012 Daniel Silverstone <dsilvers@digital-scurf.org>
+--
+-- This is an example which is part of Gitano.
+--
+
+local project_hook, repo, updates = ...
+
+local empty = "0000000000000000000000000000000000000000"
+
+local cia_project = repo:get_config("cia.project")
+if cia_project then
+   local refpatterns = repo:get_config_list("cia.branches")
+   if not refpatterns or #refpatterns == 0 then
+      refpatterns = { ".*" }
+   end
+   for i = 1, #refpatterns do
+      refpatterns[i] = "^refs/heads/" .. refpatterns[i]
+   end
+   for ref, details in pairs(updates) do
+      if details.newsha ~= empty and details.oldsha ~= empty then
+	 local refmatched = false
+	 for i = 1, #refpatterns do
+	    if ref:match(refpatterns[i]) then
+	       refmatched = true
+	       break
+	    end
+	 end
+	 if refmatched then
+	    log.chat("Informing CIA of commits on", ref:sub(12))
+	    cia.inform_commits(cia_project, ref:sub(12), repo,
+			       details.oldsha, details.newsha)
+	 end
+      end
+   end
+end
+
+-- Finally, chain to the project hook
+return project_hook(repo, updates)