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version_checker.rb
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version_checker.rb
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# This code was created based on https://github.com/myronmarston/vcr/blob/master/lib/vcr/util/version_checker.rb
# Thanks to @myronmarston
# Copyright (c) 2010-2012 Myron Marston
# 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 WebMock
class VersionChecker
def initialize(library_name, library_version, min_patch_level, max_minor_version = nil)
@library_name, @library_version = library_name, library_version
@min_patch_level, @max_minor_version = min_patch_level, max_minor_version
@major, @minor, @patch = parse_version(library_version)
@min_major, @min_minor, @min_patch = parse_version(min_patch_level)
@max_major, @max_minor = parse_version(max_minor_version) if max_minor_version
@comparison_result = compare_version
end
def check_version!
warn_about_too_low if too_low?
warn_about_too_high if too_high?
end
private
def too_low?
@comparison_result == :too_low
end
def too_high?
@comparison_result == :too_high
end
def warn_about_too_low
warn_in_red "You are using #{@library_name} #{@library_version}. " +
"WebMock supports version #{version_requirement}."
end
def warn_about_too_high
warn_in_red "You are using #{@library_name} #{@library_version}. " +
"WebMock is known to work with #{@library_name} #{version_requirement}. " +
"It may not work with this version."
end
def warn_in_red(text)
Kernel.warn colorize(text, "\e[31m")
end
def compare_version
case
when @major < @min_major then :too_low
when @max_major && @major > @max_major then :too_high
when @major > @min_major then :ok
when @minor < @min_minor then :too_low
when @max_minor && @minor > @max_minor then :too_high
when @minor > @min_minor then :ok
when @patch < @min_patch then :too_low
end
end
def version_requirement
req = ">= #{@min_patch_level}"
req += ", < #{@max_major}.#{@max_minor + 1}" if @max_minor
req
end
def parse_version(version)
version.split('.').map { |v| v.to_i }
end
def colorize(text, color_code)
"#{color_code}#{text}\e[0m"
end
end
end