/
utils.py
84 lines (69 loc) · 2.5 KB
/
utils.py
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# Copyright 2011 Tomo Krajina
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sys as mod_sys
import math as mod_math
import xml.sax.saxutils as mod_saxutils
import datetime as mod_datetime
from typing import Any, AnyStr, List, Optional, cast
def to_xml(tag: str, attributes: Any=None, content: Any=None, default: Any=None, escape: bool=False, prettyprint: bool=True, indent: str='') -> str:
if not prettyprint:
indent = ''
attributes = attributes or {}
result: List[str] = [f'\n{indent}<{tag}']
if content is None and default:
content = default
if attributes:
for attribute in attributes.keys():
result.append(make_str(f' {attribute}="{attributes[attribute]}"'))
if content is None:
result.append('/>')
else:
if escape:
result.append(make_str(f'>{mod_saxutils.escape(content)}</{tag}>'))
else:
result.append(make_str(f'>{content}</{tag}>'))
return make_str(''.join(result))
def is_numeric(object: Any) -> bool:
try:
float(object)
return True
except TypeError:
return False
except ValueError:
return False
def to_number(s: str, default: float=0, nan_value: Optional[float]=None) -> float:
try:
result = float(s)
if mod_math.isnan(result) and nan_value:
return nan_value
return result
except TypeError:
pass
except ValueError:
pass
return default
def total_seconds(timedelta: mod_datetime.timedelta) -> float:
""" Some versions of python don't have the timedelta.total_seconds() method. """
if timedelta is None:
return None
return timedelta.total_seconds()
def make_str(s: AnyStr) -> str:
""" Convert a str or unicode or float object into a str type. """
if isinstance(s, float):
result = str(s)
if not 'e' in result:
return result
# scientific notation is illegal in GPX 1/1
return format(s, '.10f').rstrip('0').rstrip('.')
return str(s)