bin/change-git-remotes new

1 files changed, 94 insertions, 0 deletions

diff --git a/bin/change-git-remotes b/bin/change-git-remotes
new file mode 100755
index 0000000..f4573b2
--- /dev/null
+++ b/bin/change-git-remotes
@@ -0,0 +1,94 @@
+#!/bin/sh
+
+# shellcheck source=../lib/load-configuration
+. "${0%/*}/../lib/load-configuration"
+
+if [ $# -eq 1 ] && [ "x$1" = 'x-q' ]; then
+  quiet=true
+elif [ $# -ne 0 ]; then
+  printf 'change-git-remotes [-q]\n'
+  exit 1
+else
+  quiet=false
+fi
+
+{
+  # shellcheck disable=SC2016
+  eval "$(
+    printf '%s\n' "${repo_names}" \
+    | tr ' ' '\n' \
+    | sed '
+      s/^.*$/echo "\0 ${repo_paths__\0}"/
+    '
+  )"
+  printf '%s\n' "builder ${base_dir}"
+} \
+| while read -r git_name git_dir; do
+  if ! remotes=$(
+    git -C "${git_dir}" remote 2>/dev/null
+  ); then
+    ${quiet} \
+    || >&2 printf '"%s" (%s) seems to be no git directory.\n' \
+      "${git_dir}" \
+      "${git_name}"
+    continue
+  fi
+  if [ "${remotes}" != 'origin' ]; then
+    ${quiet} \
+    || >&2 printf '"%s" (%s) has multiple remotes - skipping.\n' \
+      "${git_dir}" \
+      "${git_name}"
+    continue
+  fi
+  if git -C "${git_dir}" fetch >/dev/null 2>&1; then
+    ${quiet} \
+    || >&2 printf '"%s" (%s) can fetch normally - skipping.\n' \
+      "${git_dir}" \
+      "${git_name}"
+    continue
+  fi
+  url=$(
+    git -C "${git_dir}" remote get-url origin
+  )
+  case "${git_name}" in
+    'archlinux32')
+      new_urls=$(
+        printf 'https://git%s.archlinux32.org/archlinux32/packages\n' \
+          '' 2 3 4
+      )
+    ;;
+    'builder')
+      new_urls=$(
+        printf 'https://git%s.archlinux32.org/archlinux32/builder\n' \
+          '' 2 3 4
+      )
+    ;;
+    *)
+      new_urls="${url}"
+    ;;
+  esac
+  if [ "${new_urls}" = "${url}" ]; then
+    ${quiet} \
+    || printf 'No alternative remotes are known for %s - skipping.\n' \
+      "${git_name}"
+    continue
+  fi
+  printf '%s\n' "${new_urls}" \
+  | while read -r new_url; do
+    if [ "${new_url}" = "${url}" ]; then
+      continue
+    fi
+    git -C "${git_dir}" remote set-url origin "${new_url}"
+    git -C "${git_dir}" remote set-url origin "${new_url}"
+    if git -C "${git_dir}" fetch >/dev/null 2>&1; then
+      ${quiet} \
+      || >&2 printf '"%s" (%s): remote changed: "%s" -> "%s".\n' \
+        "${git_dir}" \
+        "${git_name}" \
+        "${url}" \
+        "${new_url}"
+      break
+    fi
+    git -C "${git_dir}" remote set-url origin "${url}"
+  done
+done