convert-scripts

#!/bin/sh
set -eu
usage="Usage: $0 REPO OUT OUT_LOCKER"
repo="${1:?$usage}"
out="${2:?$usage}"
out_locker="${3:?$usage}"

here="$(readlink -f "$(dirname "$0")")"
tmp="$(mktemp -dt git-conversion.XXXXXX)"
trap 'rm -rf "$tmp"' EXIT

(cd "$repo"; "$here/reposurgeon/repotool" export) > "$tmp/scripts.svn"
patch -f -r - "$tmp/scripts.svn" < "$here/scripts.svn.patch" || {
    mv "$tmp/scripts.svn.orig" "$tmp/scripts.svn"
    patch -f -r - "$tmp/scripts.svn" < "$here/scripts.svn.patch.alt"
}

perl -0 -pe '
    s/^(Node-(?:copyfrom-)?path: )(?!trunk|branches|tags)/$1root\//gm;
    s/^(Node-(?:copyfrom-)?path: root)\/$/$1/gm;
    s/^(Revision-number: 1)$/Node-path: root\nNode-kind: dir\nNode-action: add\nProp-content-length: 10\nContent-length: 10\n\nPROPS-END\n\n\1/m;
    ' "$tmp/scripts.svn" \
    | svndumpfilter exclude --skip-missing-merge-sources --pattern 'trunk/locker*' 'branches/*/locker*' 'tags/*/locker*' 'root/locker*' 'branches/locker-dev*' \
    > "$tmp/scripts.renamed.svn"
"$here/reposurgeon/reposurgeon" \
    "verbose 1" \
    "branchify trunk tags/* branches/* root" \
    "read <$tmp/scripts.renamed.svn" \
    "authors read <$here/scripts.map" \
    "sourcetype svn" \
    "prefer git" \
    "blob </dev/null" \
    "<923> add M 644 :1 server/common/oursrc/scripts-base/.keep" \
    "<950> add M 644 :1 server/common/oursrc/nss-ldapd/.keep" \
    "<1119> remove .gitignore" \
    "<1119> delete --tagback" \
    "<1120> delete" \
    "<1294> add D server/common/oursrc/nss-ldapd/.keep" \
    "<1178>|<1179> merge" \
    "<1195>|<1198> merge" \
    "<1209>|<1210> merge" \
    "<1219>|<1220> merge" \
    "<1503> add M 644 :1 server/common/oursrc/scripts-wizard/.keep" \
    "<1684> unmerge" \
    "<1673>,<1674> squash" \
    "<1693> unmerge" \
    "<1682>|<1693> merge" \
    "<2495> unmerge" \
    "write --legacy >$tmp/scripts.fi"
rm -fr "$out"
"$here/reposurgeon/reposurgeon" \
    "read <$tmp/scripts.fi" \
    "prefer git" \
    "rebuild $out"
(
    cd "$out"
    git tag --points-at emptycommit-127^0 | xargs git tag -d
    git tag -d emptycommit-1791 emptycommit-2287 emptycommit-2370 emptycommit-2381
    git branch -d root
)

perl -0 -pe '
    s/^(Node-(?:copyfrom-)?path: )(?!trunk|branches|tags)/$1root\//gm;
    s/^(Node-(?:copyfrom-)?path: root)\/$/$1/gm;
    s/^(Revision-number: 1)$/Node-path: root\nNode-kind: dir\nNode-action: add\nProp-content-length: 10\nContent-length: 10\n\nPROPS-END\n\n\1/m;
    ' "$tmp/scripts.svn" \
    | svndumpfilter include --skip-missing-merge-sources --pattern 'trunk' 'trunk/locker*' 'branches/locker-dev' 'branches/locker-dev/locker*' 'root' 'root/locker*' \
    > "$tmp/scripts-locker.renamed.svn"
"$here/reposurgeon/reposurgeon" \
    "verbose 1" \
    "branchify trunk tags/* branches/* root" \
    "read <$tmp/scripts-locker.renamed.svn" \
    "authors read <$here/scripts.map" \
    "sourcetype svn" \
    "prefer git" \
    "paths sup locker" \
    "blob <$here/ignore-all" \
    "<359> add M 644 :1 cron/servers/.gitignore" \
    "<359> add M 644 :1 cron/server-crontabs/.gitignore" \
    "<359> add M 644 :1 cron/lock/.gitignore" \
    "<359> add M 644 :1 cron/crontabs/.gitignore" \
    "<1119> remove .gitignore" \
    "<1119> delete --tagback" \
    "<1120> delete" \
    "<1259> delete" \
    "<1262> unmerge" \
    "<1404> unmerge" \
    "<1415> squash --pushback" \
    "<1547> unmerge" \
    "<1548> unmerge" \
    "<1550> unmerge" \
    "<1693> delete" \
    "<1697> delete" \
    "<1698> delete" \
    "<1724> unmerge" \
    "<1730> unmerge" \
    "<1791> unmerge" \
    "<2066> delete" \
    "<2246> delete" \
    "<2591> delete" \
    "<2253> remove etc/known_hosts" \
    "<2253> delete" \
    "<2286> unmerge" \
    "<2309>|<2310> merge" \
    "<2311>|<2312> merge" \
    "<2314>|<2319> merge" \
    "<2369>|<2370> merge" \
    "<2380>|<2381> merge" \
    "write --legacy >$tmp/scripts-locker.fi"
rm -fr "$out_locker"
"$here/reposurgeon/reposurgeon" \
    "read <$tmp/scripts-locker.fi" \
    "prefer git" \
    "rebuild $out_locker"
(
    cd "$out_locker"
    git branch -d root
    git branch -D locker-dev
)