add scripture

adversarial_mirror.sh

@@ -0,0 +1,82 @@
+#!/bin/sh
+set -eux
+repo_url=$1
+target_remote=$2
+main_branch=$3
+
+repo_name=$(printf "%s" "$repo_url" | rev | cut -d '/' -f1 | rev | cut -d '.' -f1)
+echo "$repo_name"
+if [ ! -d "$repo_name" ]; then
+  echo "cloning..."
+  git clone "$repo_url"
+fi
+
+# already exists, fetch and copy to adversarial
+git -C "$repo_name" fetch --force origin
+adversarial="adversarial-$repo_name"
+mkdir -p "$adversarial"
+
+if [ ! -d "$adversarial/.git" ]; then
+  git -C "$adversarial" init -b main
+  git -C "$adversarial" remote add origin "$target_remote"
+fi
+
+copy() {
+  branch=$1
+  branch_target=$2
+  echo "copy $branch --> $branch_target"
+
+  git -C "$repo_name" checkout "$branch"
+
+  set +e
+  git -C "$adversarial" rev-parse --verify "$branch_target"
+  branch_exists_exitcode=$?
+  set -e
+
+  if [ "$branch_exists_exitcode" = "0" ]; then
+    git -C "$adversarial" switch "$branch_target"
+  else
+    # always create from main lul
+    if [ "$branch_target" = "$main_branch" ]; then
+      git -C "$adversarial" checkout -b "$branch_target"
+    else
+      git -C "$adversarial" checkout "$main_branch"
+      git -C "$adversarial" checkout -b "$branch_target"
+    fi
+  fi
+
+  # copy, commit
+
+  toplevels=$(find "$repo_name" -mindepth 1 -maxdepth 1 -not -path "$repo_name/.git")
+  for path in $toplevels; do
+    echo "$path"
+    cp -vr "$path" "$adversarial"
+  done
+  timestamp=$(git -C "$repo_name" log -1 --format="%at" | xargs -I{} date -d @{} +%Y-%m-%dT%H:%M:%S)
+
+  cd "$adversarial"
+  git add .
+  set +e
+  git commit -m "$branch_target - remote-$timestamp now-$(date +%Y-%m-%dT%H:%M:%S)"
+  set -e
+  cd ..
+}
+
+# always copy main first so that other branches can be made from main
+copy "origin/$main_branch" "$main_branch"
+
+for line in $(git -C "$repo_name" for-each-ref --format='%(refname)' refs/remotes/origin); do
+  branch=$(printf "%s" "$line" | sed 's/refs\/remotes\///g')
+  branch_target=$(printf "%s" "$branch" | sed 's/origin\///g')
+  echo "copying branch $branch  -> $branch_target"
+  if [ "$branch_target" != "HEAD" ]; then
+    copy "$branch" "$branch_target"
+  else
+    echo "skipping HEAD, not real branch"
+  fi
+done
+
+
+echo "push time"
+cd "$adversarial"
+git push --all origin