Merge matrix-react-sdk into element-web

Merge remote-tracking branch 'repomerge/t3chguy/repomerge' into t3chguy/repo-merge

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

scripts/fetchdep.sh

@@ -0,0 +1,85 @@
+#!/bin/bash
+
+set -x
+
+deforg="$1"
+defrepo="$2"
+defbranch="$3"
+
+rm -r "$defrepo" || true
+
+# figure out where to look for pull requests:
+#   - We may have been told an explicit repo via the PR_ORG/PR_REPO/PR_NUMBER env vars
+#   - otherwise, check the $GITHUB_ env vars which are set by Github Actions
+#   - failing that, fall back to the element-hq/element-web repo.
+#
+# in ether case, the PR_NUMBER variable must be set explicitly.
+default_org_repo=${GITHUB_REPOSITORY:-"element-hq/element-web"}
+PR_ORG=${PR_ORG:-${default_org_repo%%/*}}
+PR_REPO=${PR_REPO:-${default_org_repo##*/}}
+
+# A function that clones a branch of a repo based on the org, repo and branch
+clone() {
+    org=$1
+    repo=$2
+    branch=$3
+    if [ -n "$branch" ]
+    then
+        echo "Trying to use $org/$repo#$branch"
+        # Disable auth prompts: https://serverfault.com/a/665959
+        GIT_TERMINAL_PROMPT=0 git clone https://github.com/$org/$repo.git $repo --branch "$branch" --depth 1 && exit 0
+    fi
+}
+
+# A function that gets info about a PR from the GitHub API based on its number
+getPRInfo() {
+    number=$1
+    if [ -n "$number" ]; then
+        echo "Getting info about a PR with number $number"
+
+        apiEndpoint="https://api.github.com/repos/$PR_ORG/$PR_REPO/pulls/$number"
+
+        head=$(curl $apiEndpoint | jq -r '.head.label')
+    fi
+}
+
+# Some CIs don't give us enough info, so we just get the PR number and ask the
+# GH API for more info - "fork:branch". Some give us this directly.
+if [ -n "$BUILDKITE_BRANCH" ]; then
+    # BuildKite
+    head=$BUILDKITE_BRANCH
+elif [ -n "$PR_NUMBER" ]; then
+    # GitHub
+    getPRInfo $PR_NUMBER
+elif [ -n "$REVIEW_ID" ]; then
+    # Netlify
+    getPRInfo $REVIEW_ID
+fi
+
+# for forks, $head will be in the format "fork:branch", so we split it by ":"
+# into an array. On non-forks, this has the effect of splitting into a single
+# element array given ":" shouldn't appear in the head - it'll just be the
+# branch name. Based on the results, we clone.
+BRANCH_ARRAY=(${head//:/ })
+TRY_ORG=$deforg
+TRY_BRANCH=${BRANCH_ARRAY[0]}
+if [[ "$head" == *":"* ]]; then
+    # ... but only match that fork if it's a real fork
+    if [ "${BRANCH_ARRAY[0]}" != "$PR_ORG" ]; then
+        TRY_ORG=${BRANCH_ARRAY[0]}
+    fi
+    TRY_BRANCH=${BRANCH_ARRAY[1]}
+fi
+clone ${TRY_ORG} $defrepo ${TRY_BRANCH}
+
+# Try the target branch of the push or PR.
+if [ -n "$GITHUB_BASE_REF" ]; then
+    clone $deforg $defrepo $GITHUB_BASE_REF
+elif [ -n "$BUILDKITE_PULL_REQUEST_BASE_BRANCH" ]; then
+    clone $deforg $defrepo $BUILDKITE_PULL_REQUEST_BASE_BRANCH
+fi
+
+# Try HEAD which is the branch name in Netlify (not BRANCH which is pull/xxxx/head for PR builds)
+clone $deforg $defrepo $HEAD
+# Use the default branch as the last resort.
+clone $deforg $defrepo $defbranch