1 files changed, 97 insertions, 0 deletions
diff --git a/misc/freeswitch/scripts/common/array.lua b/misc/freeswitch/scripts/common/array.lua
new file mode 100644
index 0000000..b1b7a71
--- /dev/null
+++ b/misc/freeswitch/scripts/common/array.lua
@@ -0,0 +1,97 @@
+-- Gemeinschaft 5 module: array functions
+-- (c) AMOOMA GmbH 2013
+-- 
+
+module(...,package.seeall)
+
+function try(array, arguments)
+  if type(arguments) ~= 'string' or type(array) ~= 'table' then
+    return nil;
+  end
+
+  local result = array;
+  
+  arguments:gsub('([^%.]+)', function(entry)
+    local success, result = pcall(function() result = (result[tonumber(entry) or entry]); end);
+  end);
+  
+  return result;
+end
+
+
+function set(array, arguments, value)
+  local nop, arguments_count = arguments:gsub('%.', '');
+  local structure = array;
+  arguments:gsub('([^%.]+)', function(entry)
+    if arguments_count <= 0 then
+      structure[entry] = value;
+    elseif type(structure[entry]) == 'table' then
+      structure = structure[entry];
+    else
+      structure[entry] = {};
+      structure = structure[entry];
+    end
+    arguments_count = arguments_count - 1;
+  end);
+end
+
+
+function expand_variable(variable_path, variable_sets)
+  for index=1, #variable_sets do
+    local result = try(variable_sets[index], variable_path);
+    if result then
+      return result;
+    end
+  end
+end
+
+-- replace variables in a string by array values
+function expand_variables(line, ...)
+  local variable_sets = {...};
+  return (line:gsub('{([%a%d%._]+)}', function(captured)
+    return expand_variable(captured, variable_sets);
+  end))
+end
+
+
+-- concatenate array values
+function to_s(array, separator, prefix, suffix)
+  require 'common.str';
+
+  local buffer = '';
+  for key, value in pairs(array) do
+    buffer = common.str.append(buffer, value, separator, prefix, suffix);
+  end
+
+  return buffer;
+end
+
+-- concatenate array keys
+function keys_to_s(array, separator, prefix, suffix)
+  require 'common.str';
+
+  local buffer = '';
+  for key, value in pairs(array) do
+    buffer = common.str.append(buffer, key, separator, prefix, suffix);
+  end
+
+  return buffer;
+end
+
+-- convert to JSON
+function to_json(array)
+  require 'common.str';
+  local buffer = '{';
+  for key, value in pairs(array) do
+    if type(value) == 'table' then
+      buffer = buffer .. '"' .. key .. '":' .. to_json(value) .. ',';
+    else
+      buffer = buffer .. '"' .. key .. '":' .. common.str.to_json(value) .. ',';
+    end
+  end
+  if buffer:sub(-1) == ',' then
+    buffer = buffer:sub(1, -2);
+  end
+  buffer = buffer .. '}';
+  return buffer;
+end