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+# coding: utf-8
+# /*##########################################################################
+# Copyright (C) 2018 European Synchrotron Radiation Facility
+#
+# 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.
+#
+# ############################################################################*/
+"""Browse a data file with a GUI"""
+
+__authors__ = ["V. Valls"]
+__license__ = "MIT"
+__date__ = "28/05/2018"
+
+
+_trueStrings = set(["yes", "true", "1"])
+_falseStrings = set(["no", "false", "0"])
+
+
+def stringToBool(string):
+ """Returns a boolean from a string.
+
+ :raise ValueError: If the string do not contains a boolean information.
+ """
+ lower = string.lower()
+ if lower in _trueStrings:
+ return True
+ if lower in _falseStrings:
+ return False
+ raise ValueError("'%s' is not a valid boolean" % string)