45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
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# The Mia! Accounting Flask Project.
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# Author: imacat@mail.imacat.idv.tw (imacat), 2023/1/25
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# Copyright (c) 2023 imacat.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""The query keyword parser.
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This module should not import any other module from the application.
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"""
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import re
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def parse_query_keywords(q: str | None) -> list[str]:
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"""Returns the query keywords by the query parameter.
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:param q: The query parameter.
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:return: The query keywords.
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"""
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if q is None:
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return []
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q = q.strip()
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if q == "":
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return []
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keywords: list[str] = []
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while q is not None:
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m: re.Match = re.match(r"(?:\"([^\"]+)\"|(\S+))(?:\s+(.+)|)$", q)
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if m.group(1) is not None:
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keywords.append(m.group(1))
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else:
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keywords.append(m.group(2))
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q = m.group(3)
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return keywords
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