forked from cerc-io/ipld-eth-server
78 lines
2.5 KiB
Bash
Executable File
78 lines
2.5 KiB
Bash
Executable File
#!/bin/sh
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if test "x$UPGRADE_MSG" = "x"; then
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printf >&2 "fatal: Please set '"'$UPGRADE_MSG'"' before sourcing this script\n"
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exit 1
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fi
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die_upgrade() {
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printf >&2 "fatal: %s\n" "$@"
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printf >&2 "=> %s\n" "$UPGRADE_MSG"
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exit 1
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}
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major_number() {
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vers="$1"
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# Hack around 'expr' exiting with code 1 when it outputs 0
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case "$vers" in
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0) echo "0" ;;
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0.*) echo "0" ;;
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*) expr "$vers" : "\([^.]*\).*" || return 1
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esac
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}
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check_at_least_version() {
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MIN_VERS="$1"
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CUR_VERS="$2"
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PROG_NAME="$3"
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# Get major, minor and fix numbers for each version
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MIN_MAJ=$(major_number "$MIN_VERS") || die "No major version number in '$MIN_VERS' for '$PROG_NAME'"
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CUR_MAJ=$(major_number "$CUR_VERS") || die "No major version number in '$CUR_VERS' for '$PROG_NAME'"
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# We expect a version to be of form X.X.X
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# if the second dot doesn't match, we consider it a prerelease
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if MIN_MIN=$(expr "$MIN_VERS" : "[^.]*\.\([0-9]\+\)"); then
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# this captured digit is necessary, since expr returns code 1 if the output is empty
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if expr "$MIN_VERS" : "[^.]*\.[0-9]*\([0-9]\.\|[0-9]\$\)" >/dev/null; then
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MIN_PRERELEASE="0"
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else
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MIN_PRERELEASE="1"
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fi
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MIN_FIX=$(expr "$MIN_VERS" : "[^.]*\.[0-9]\+[^0-9]\+\([0-9]\+\)") || MIN_FIX="0"
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else
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MIN_MIN="0"
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MIN_PRERELEASE="0"
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MIN_FIX="0"
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fi
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if CUR_MIN=$(expr "$CUR_VERS" : "[^.]*\.\([0-9]\+\)"); then
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# this captured digit is necessary, since expr returns code 1 if the output is empty
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if expr "$CUR_VERS" : "[^.]*\.[0-9]*\([0-9]\.\|[0-9]\$\)" >/dev/null; then
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CUR_PRERELEASE="0"
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else
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CUR_PRERELEASE="1"
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fi
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CUR_FIX=$(expr "$CUR_VERS" : "[^.]*\.[0-9]\+[^0-9]\+\([0-9]\+\)") || CUR_FIX="0"
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else
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CUR_MIN="0"
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CUR_PRERELEASE="0"
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CUR_FIX="0"
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fi
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# Compare versions
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VERS_LEAST="$PROG_NAME version '$CUR_VERS' should be at least '$MIN_VERS'"
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test "$CUR_MAJ" -lt "$MIN_MAJ" && die_upgrade "$VERS_LEAST"
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test "$CUR_MAJ" -gt "$MIN_MAJ" || {
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test "$CUR_MIN" -lt "$MIN_MIN" && die_upgrade "$VERS_LEAST"
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test "$CUR_MIN" -gt "$MIN_MIN" || {
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test "$CUR_PRERELEASE" -gt "$MIN_PRERELEASE" && die_upgrade "$VERS_LEAST"
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test "$CUR_PRERELEASE" -lt "$MIN_PRERELEASE" || {
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test "$CUR_FIX" -lt "$MIN_FIX" && die_upgrade "$VERS_LEAST"
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true
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}
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}
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}
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}
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