66 lines
2.1 KiB
Bash
Executable File
66 lines
2.1 KiB
Bash
Executable File
#!/bin/bash
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termux_pkg_is_update_needed() {
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# USAGE: termux_pkg_is_update_needed <current-version> <latest-version>
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if [[ -z "$1" ]] || [[ -z "$2" ]]; then
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termux_error_exit "${BASH_SOURCE[0]}: at least 2 arguments expected"
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fi
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local CURRENT_VERSION="$1"
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local LATEST_VERSION="$2"
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# Compare versions.
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# shellcheck disable=SC2091
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if $(
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cat <<-EOF | python3 -
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import sys
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from pkg_resources import parse_version
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if parse_version("${CURRENT_VERSION}") < parse_version("${LATEST_VERSION}"):
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sys.exit(0)
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else:
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sys.exit(1)
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EOF
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); then
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return 0 # true. Update needed.
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fi
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return 1 # false. Update not needed.
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}
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# Make it also usable as command line tool. `scripts/bin/apt-compare-versions` is symlinked to this file.
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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declare -f termux_error_exit >/dev/null ||
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. "$(dirname "$(realpath "${BASH_SOURCE[0]}")")/termux_error_exit.sh" # realpath is used to resolve symlinks.
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if [[ "${1}" == "--help" ]]; then
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cat <<-EOF
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Usage: $(basename "${BASH_SOURCE[0]}") [--help] <first-version> <second-version>] [version-regex]
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--help - show this help message and exit
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<first-version> - first version to compare
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<second-version> - second version to compare
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[version-regex] - optional regular expression to filter version numbers from given versions
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EOF
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fi
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# Print in human readable format.
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first_version="$1"
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second_version="$2"
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version_regexp="${3:-}"
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if [[ -n "${version_regexp}" ]]; then
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first_version="$(grep -oP "${version_regexp}" <<<"${first_version}")"
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second_version="$(grep -oP "${version_regexp}" <<<"${second_version}")"
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if [[ -z "${first_version}" ]] || [[ -z "${second_version}" ]]; then
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termux_error_exit "ERROR: Unable to parse version numbers using regexp '${version_regexp}'"
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fi
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fi
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if [[ "${first_version}" == "${second_version}" ]]; then
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echo "${first_version} = ${second_version}"
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else
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if termux_pkg_is_update_needed "${first_version}" "${second_version}"; then
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echo "${first_version} < ${second_version}"
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else
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echo "${first_version} > ${second_version}"
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fi
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fi
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fi
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