fix(cosmos): add upgradegaia.sh to apply Gaia source upgrades

golang/cosmos/upgradegaia.sh

@@ -0,0 +1,66 @@
+#! /bin/bash
+# 3-way-merge changes from current repo to agoric-sdk/golang/cosmos
+#
+# Usage: ./upgradegaia.sh <FROM_BRANCH> <TO_BRANCH>
+# Such as:
+#  cd ~/src/gaia
+#  /path/to/agoric-sdk/golang/cosmos/upgradegaia.sh release/v6.0.0-rc3 release/v6.0.0
+set -ueo pipefail
+
+test $# -eq 2 || {
+    echo "Usage: $0 <FROM_BRANCH> <TO_BRANCH>" 1>&2
+    exit 1
+}
+
+FROM_BRANCH="$1"
+TO_BRANCH="$2"
+
+thisdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" > /dev/null && pwd)"
+tmp="$(mktemp -dt upgradegaia.XXXXXX)"
+
+echo "Get the Gaia files from $FROM_BRANCH and $TO_BRANCH"
+for tag in "$FROM_BRANCH" "$TO_BRANCH"; do
+  qtag=${tag//\//_}
+  for root in Makefile app cmd/gaiad; do
+    case "$root" in
+    Makefile) echo "$root" ;;
+    *) git ls-tree --name-only --full-tree -r "$tag:$root" | sed -e "s!^!$root/!" ;;
+    esac
+  done | while read -r src; do
+    # echo "$src"
+    dst="$tmp/$qtag/$src"
+    echo "extracting $dst"
+    mkdir -p "$(dirname "$dst")"
+    git cat-file blob "$tag:$src" > "$dst"
+  done
+done
+
+echo "Compute 3-way diffs between Gaia and us"
+(cd "$tmp/${FROM_BRANCH//\//_}" && find . -type f -print) | \
+  while read -r src; do
+    # echo "$src"
+    case "$src" in
+    ./cmd/gaiad/*) our=${src//cmd\/gaiad/daemon} ;;
+    *) our=$src ;;
+    esac
+
+    new="$tmp/diff3/$our"
+    echo "creating $new"
+    mkdir -p "$(dirname "$new")"
+    status=0
+    diff3 -mE \
+      "$thisdir/$our" \
+      "$tmp/${FROM_BRANCH//\//_}/$src" \
+      "$tmp/${TO_BRANCH//\//_}/$src" \
+      > "$new" || status=$?
+    if [ $status -ge 2 ]; then
+      exit "$status"
+    fi
+  done
+
+# Display some hints.
+echo "=== Now you can run:"
+set -x
+: cp -a "$tmp/diff3/." "$thisdir/"
+: git diff --stat
+: git commit -am "Upgrade to \`$TO_BRANCH\`"