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+#!/bin/bash
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+
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+# Script to checkout the client at a given point of time.
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+# Usage:
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+#
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+# checkoutAt.sh <meta|client|parser|util|plugins> <sha1>
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+#
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+# This will checkout <sha1> in the given repo, and then checkout the last
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+# commit in all other repos that happened before the time of requested commit.
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+
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+REPO="${1}"
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+SHA1="${2}"
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+
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+VALID_REPOS=(meta client parser util plugins)
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+containsElement () {
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+ local e
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+ for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done
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+ return 1
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+}
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+
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+containsElement "${REPO}" "${VALID_REPOS[@]}"
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+RES=${?}
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+
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+if [ "${SHA1}" = "" -o ${RES} -ne 0 ]; then
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+ echo "Usage:"
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+ echo "${0} <meta|client|parser|util|plugins> <sha1>"
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+ echo ""
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+ echo "This will checkout <sha1> in the given repo, and then checkout the last commit in all other repos that happened before the time of requested commit."
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+ exit 1;
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+fi;
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+
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+CHECKOUTDIR="${PWD}"
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+if [ ! -e "${CHECKOUTDIR}/settings.gradle" -o "`grep "rootProject.name = 'dmdirc'" settings.gradle 2>&1`" = "" ]; then
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+ echo "'${PWD}' does not look like a DMDirc/meta checkout."
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+ exit 1;
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+fi;
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+
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+
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+getRepoDir() {
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+ if [ "${1}" = "meta" ]; then
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+ echo "${CHECKOUTDIR}/"
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+ else
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+ echo "${CHECKOUTDIR}/${1}"
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+ fi;
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+}
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+
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+isCommit() {
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+ if [ "`git cat-file -t "${1}" 2>&1`" = "commit" ]; then
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+ echo "0"
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+ else
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+ echo "1"
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+ fi;
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+}
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+
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+cd `getRepoDir "${REPO}"`
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+
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+if [ `isCommit ${SHA1}` -eq 1 ]; then
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+ echo "Invalid commit in ${REPO}: ${SHA1}"
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+ exit 1;
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+fi;
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+
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+# Get the requested commit.
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+echo -ne "\e[32m"
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+echo "In ${REPO}: "
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+echo -ne "\e[93m"; git show ${SHA1} -s --format=" Checking out: %H - %s"
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+echo -ne "\e[93m"; git show ${SHA1} -s --format=" Author: %an / Committer: %cn / Date: %cD"
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+echo -e "\e[39m"
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+
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+
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+echo -ne "\e[90m"
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+git reset --hard
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+git checkout -f ${SHA1}
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+echo -e "\e[39m"
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+
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+THISTIME=`git show ${SHA1} --pretty=format:%ct`
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+
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+# Now get all the others...
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+for R in "${VALID_REPOS[@]}"
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+do
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+ if [ "${R}" != "${REPO}" ]; then
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+ cd `getRepoDir "${R}"`
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+ RSHA1=`git rev-list -1 --before="${THISTIME}" --all`
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+ echo -ne "\e[32m"
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+ echo "In ${R}: "
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+ echo -ne "\e[93m"; git show ${RSHA1} -s --format=" Checking out: %H - %s"
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+ echo -ne "\e[93m"; git show ${RSHA1} -s --format=" Author: %an / Committer: %cn / Date: %cD"
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+ echo -e "\e[39m"
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+
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+ echo -ne "\e[90m"
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+ git reset --hard
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+ git checkout -f ${RSHA1}
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+ echo -e "\e[39m"
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+ fi;
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+done;
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+
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+cd "${CHECKOUTDIR}"
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