# Each line of the metadata_mapping_rules tab-separated value file must consist of 5 entries

# 1. Source metadata name to use
#      This must start with either 's/...' or 'm/...'
#      's' means the line is a substitution rule, which is always aplied to generate the desintation metadata name+value
#      'm' means the line must match the regular expression before the rule is applied to generate the desintation metadata name+value

# 2. Source Regex it needs to match
# 3. Destination Regex substitution
# 4. Regex modifiers (e.g. 'i' of case-insensitive, 'g' for global)
# 5. Destination metadata name to set with the modified value

Source,                   s/\.\w+$/,                  // ,      '' , _transientSourceTitle1     # removes filename extension from end
_transientSourceTitle1,   s/([A-Z][a-z]+)(?=[A-Z])/,  /$1 /,    'g', _transientSourceTitle2     # break up CamelCase 
_transientSourceTitle2,   s/(_|-)+/,                  / /,      'g', ex.SourceTitle             # reduce sequences of underscores and/or hyphens to a single space per sequence