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# coding: utf-8
#
# Project: Azimuthal integration
# https://github.com/silx-kit/pyFAI
#
# Copyright (C) 2015-2018 European Synchrotron Radiation Facility, Grenoble, France
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
"""Module containing enhanced string formatters."""
__author__ = "valentin.valls@esrf.eu"
__license__ = "MIT"
__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
__date__ = "16/10/2020"
__status__ = "development"
__docformat__ = 'restructuredtext'
import string
class SafeFormatter(string.Formatter):
"""Like default formater but unmatched keys are still present
into the result string"""
def get_field(self, field_name, args, kwargs):
try:
return super(SafeFormatter, self).get_field(field_name, args, kwargs)
except KeyboardInterrupt:
raise
except Exception:
return "{%s}" % field_name, field_name
_safe_formater = SafeFormatter()
def safe_format(format_string, arguments):
"""Like default str.format but unmatching patterns will be
still present into the result string.
:param format_string str: Format string as defined in the default
formatter.
:param arguments dict or tuple: Arbitrary set of positional and keyword
arguments.
:rtype: str
"""
if isinstance(arguments, dict):
args = []
kwargs = arguments
else:
args = arguments
kwargs = {}
return _safe_formater.vformat(format_string, args, kwargs)
def latex_to_unicode(string):
"""Returns a unicode representation from latex strings used by pyFAI.
.. note:: The latex string could be removed from the pyFAI core.
:param str string: A latex string to convert
:rtype: str
"""
string = string.replace("$", u"")
string = string.replace("^{-2}", u"⁻²")
string = string.replace("^{-1}", u"⁻¹")
string = string.replace("^.", u"⋅")
string = string.replace("2\\theta", u"2θ")
string = string.replace("^{o}", u"°")
string = string.replace("\\AA", u"Å")
string = string.replace("log10", u"log₁₀")
string = string.replace("^{*2}", u"d*²")
return string
def to_scientific_unicode(value, digits=3):
"""Convert a float value into a string using scientific notation and
superscript unicode character.
This avoid using HTML in some case, when Qt widget does not support it.
:param float value: Value to convert to displayable string
:param int digits: Number of digits expected (`3` means `1.000`).
"""
value = ("%%0.%de" % digits) % value
value, power10 = value.split("e")
power = ""
for p in power10:
if p == "-":
power += u"\u207B"
elif p == "+":
power += u"\u207A"
elif p == "1":
power += u"\u00B9"
elif p == "2":
power += u"\u00B2"
elif p == "3":
power += u"\u00B3"
else:
v = ord(p) - ord("0")
power += chr(0x2070 + v)
value = value + u"\u00B710" + power
return value
_TRUE_STRINGS = set(["yes", "true", "1"])
_FALSE_STRINGS = set(["no", "false", "0"])
def to_bool(string):
"""Returns a safe boolean from a string.
:raise ValueError: If the string do not contains a boolean information.
"""
lower = string.lower()
if lower in _TRUE_STRINGS:
return True
if lower in _FALSE_STRINGS:
return False
raise ValueError("'%s' is not a valid boolean" % string)
_ordinal_suffix = ["th", "st", "nd", "rd", "th", "th", "th", "th", "th", "th"]
"""Suffix for ordinal numbers from 0 to 9"""
def to_ordinal(number):
"""
Returns a string from an ordinal value with it's suffix.
:param int number: A number refering to a position
:rtype: str
"""
string = "%d" % number
if len(string) >= 2 and string[-2] == "1":
return string + "th"
digit = ord(string[-1]) - ord("0")
return string + _ordinal_suffix[digit]
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