CLOD: Add rudimentary list support so we can convert Gitano's group configs

1 files changed, 45 insertions, 0 deletions

diff --git a/examples/configuration-lists.lua b/examples/configuration-lists.lua
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+++ b/examples/configuration-lists.lua
@@ -0,0 +1,45 @@
+-- examples/configuration-lists.lua
+--
+-- Demonstrate lists in clod configurations
+--
+-- Copyright 2012 Daniel Silverstone <dsilvers@digital-scurf.org>
+--
+
+clod = require "clod"
+
+-- Clod's list support is a side-effect of its dictionary-like syntax
+-- Essentially lists are not supported.  In practice, Clod simulates
+-- them by the ability to iterate subsets of the configuration.
+-- You cannot usefully reorder lists, they're just dictionaries with
+-- automatic keys.  When Clod saves configurations, it changes trailing
+-- i_[0-9]+ keys into a ["*"].  This is a tad 'magical' but never mind.
+
+local configuration = [[
+group.members["*"] "dsilvers"
+group.members["*"] "liw"
+
+wont.see.this "ERROR"
+
+group.members["*"] "rjek"
+group.members["*"] "robtaylor"
+]]
+
+conf, err = clod.parse(configuration)
+if not conf then
+   error(err)
+end
+
+print("Input config:")
+io.stdout:write(configuration)
+print()
+print()
+
+print("Group members in the conf (by conf:each('group.members') iterator):")
+for key, value in conf:each("group.members") do
+   print(key, value)
+end
+print()
+print()
+
+print("Serialised output:")
+io.stdout:write(conf:serialise())
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