mirror of
https://github.com/IRBorisov/ConceptPortal.git
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92 lines
3.1 KiB
Python
92 lines
3.1 KiB
Python
''' Utility functions '''
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import json
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from io import BytesIO
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import re
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from zipfile import ZipFile
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from rest_framework.permissions import BasePermission, IsAuthenticated
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class ObjectOwnerOrAdmin(BasePermission):
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''' Permission for object ownership restriction '''
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def has_object_permission(self, request, view, obj):
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if request.user == obj.owner:
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return True
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if not hasattr(request.user, 'is_staff'):
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return False
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return request.user.is_staff # type: ignore
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class IsClaimable(IsAuthenticated):
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''' Permission for object ownership restriction '''
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def has_object_permission(self, request, view, obj):
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if not super().has_permission(request, view):
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return False
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return obj.is_common
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class SchemaOwnerOrAdmin(BasePermission):
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''' Permission for object ownership restriction '''
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def has_object_permission(self, request, view, obj):
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if request.user == obj.schema.owner:
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return True
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if not hasattr(request.user, 'is_staff'):
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return False
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return request.user.is_staff # type: ignore
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class ItemOwnerOrAdmin(BasePermission):
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''' Permission for object ownership restriction '''
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def has_object_permission(self, request, view, obj):
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if request.user == obj.item.owner:
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return True
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if not hasattr(request.user, 'is_staff'):
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return False
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return request.user.is_staff # type: ignore
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def read_trs(file) -> dict:
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''' Read JSON from TRS file '''
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with ZipFile(file, 'r') as archive:
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json_data = archive.read('document.json')
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result: dict = json.loads(json_data)
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return result
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def write_trs(json_data: dict) -> bytes:
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''' Write json data to TRS file including version info '''
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content = BytesIO()
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data = json.dumps(json_data, indent=4, ensure_ascii=False)
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with ZipFile(content, 'w') as archive:
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archive.writestr('document.json', data=data)
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return content.getvalue()
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def apply_pattern(text: str, mapping: dict[str, str], pattern: re.Pattern[str]) -> str:
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''' Apply mapping to matching in regular expression patter subgroup 1 '''
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if text == '' or pattern == '':
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return text
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pos_input: int = 0
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output: str = ''
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for segment in re.finditer(pattern, text):
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entity = segment.group(1)
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if entity in mapping:
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output += text[pos_input : segment.start(1)]
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output += mapping[entity]
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output += text[segment.end(1) : segment.end(0)]
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pos_input = segment.end(0)
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output += text[pos_input : len(text)]
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return output
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_REF_OLD_PATTERN = re.compile(r'@{([^0-9\-][^\}\|\{]*?)\|([^\}\|\{]*?)\|([^\}\|\{]*?)}')
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def fix_old_references(text: str) -> str:
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''' Fix reference format: @{X1|nomn|sing} -> {X1|nomn,sing} '''
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if text == '':
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return text
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pos_input: int = 0
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output: str = ''
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for segment in re.finditer(_REF_OLD_PATTERN, text):
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output += text[pos_input : segment.start(0)]
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output += f'@{{{segment.group(1)}|{segment.group(2)},{segment.group(3)}}}'
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pos_input = segment.end(0)
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output += text[pos_input : len(text)]
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return output
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