30 lines
987 B
Plaintext
30 lines
987 B
Plaintext
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#!/usr/bin/env python3
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# apt-compare-versions: Simple script which takes two arguments and compares
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# their version according to apt rules. This can be used to verify the ordering
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# between two versions.
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#
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# Note that ~ (tilde) construct, which allows for beta and preview releases.
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# A version with ~ is considered earlier than one without, so 1.6~beta1 is
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# considered earlier than 1.6. If both versions contains ~ the version comparison
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# is made first on the part preceding the tilde, then the part coming after,
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# so 1.6~beta1 comes before 1.6~beta2.
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import apt_pkg, sys
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apt_pkg.init_system()
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if len(sys.argv) != 3:
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sys.exit('usage: apt-compare-versions <first-version> <second-version>')
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version1 = sys.argv[1]
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version2 = sys.argv[2]
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comparison_result = apt_pkg.version_compare(version1, version2)
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if comparison_result > 0:
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operator = ' > '
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elif comparison_result < 0:
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operator = ' < '
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elif comparison_result == 0:
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operator = ' == '
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print(version1 + operator + version2)
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