1 | """Custom YAML representers.""" |
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2 | |||
3 | 1 | from collections import OrderedDict |
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5 | 1 | import yaml |
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8 | 1 | class LiteralString(str): |
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9 | """Custom type for strings which should be dumped in the literal style.""" |
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11 | |||
12 | 1 | def represent_literalstring(dumper, data): |
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13 | 1 | return dumper.represent_scalar('tag:yaml.org,2002:str', data, |
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14 | style='|' if data else '') |
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16 | |||
17 | 1 | def represent_ordereddict(dumper, data): |
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18 | 1 | value = [] |
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19 | |||
20 | 1 | for item_key, item_value in data.items(): |
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21 | 1 | node_key = dumper.represent_data(item_key) |
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22 | 1 | node_value = dumper.represent_data(item_value) |
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23 | |||
24 | 1 | value.append((node_key, node_value)) |
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25 | |||
26 | 1 | return yaml.nodes.MappingNode('tag:yaml.org,2002:map', value) |
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28 | |||
29 | 1 | yaml.add_representer(OrderedDict, represent_ordereddict) |
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30 | yaml.add_representer(LiteralString, represent_literalstring) |
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31 |
Cyclic imports may cause partly loaded modules to be returned. This might lead to unexpected runtime behavior which is hard to debug.