[stable2412] Backport #8435 (#8438)

Backport #8435 into `stable2412` from EgorPopelyaev.

See the
[documentation](https://github.com/paritytech/polkadot-sdk/blob/master/docs/BACKPORT.md)
on how to use this bot.

<!--
  # To be used by other automation, do not modify:
  original-pr-number: #${pull_number}
-->

---------

Co-authored-by: Egor_P <egor@parity.io>

Author: paritytech-release-backport-bot[bot]

.github/scripts/common/lib.sh

@@ -519,3 +519,37 @@ prepare_docker_stable_tag() {
       exit 1
   fi
 }
+
+# Parse names of the branches from the github labels based on the pattern
+#
+# input: labels (array of lables like ("A3-backport" "RO-silent" "A4-backport-stable2407" "A4-backport-stable2503"))
+# output: BRANCHES (array of the branch names)
+parse_branch_names_from_backport_labels() {
+  labels="$1"
+  BRANCHES=""
+
+  for label in $labels; do
+    if [[ "$label" =~ ^A4-backport-stable[0-9]{4}$ ]]; then
+      branch_name=$(sed 's/A4-backport-//' <<< "$label")
+      BRANCHES+=" ${branch_name}"
+    fi
+  done
+
+  BRANCHES=$(echo "$BRANCHES" | sed 's/^ *//')
+  echo "$BRANCHES"
+}
+
+# Extract the PR number from the PR title
+#
+# input: PR_TITLE
+# output: PR_NUMBER or exit 1 if the PR title does not contain the PR number
+extract_pr_number_from_pr_title() {
+  PR_TITLE=$1
+  if [[ "$PR_TITLE" =~ \#([0-9]+) ]]; then
+    PR_NUMBER="${BASH_REMATCH[1]}"
+  else
+    echo "⚠️ The PR title does not contain original PR number. PR title should be in form: [stableBranchName] Backport #originalPRNumber"
+    exit 1
+  fi
+  echo $PR_NUMBER
+}

.github/workflows/check-prdoc.yml

@@ -43,20 +43,19 @@ jobs:
           echo "Checking PRdoc version"
           $ENGINE run --rm -v $PWD:/repo $IMAGE --version
 
-      - name: Get PR number
+      - name: Get Original PR number
         if: ${{ github.event.pull_request.number != '' && !contains(steps.get-labels.outputs.labels, 'R0') }}
+        shell: bash
+        env:
+          PR_TITLE: ${{ github.event.pull_request.title }}
         run: |
+          . ./.github/scripts/common/lib.sh
           original_pr_number=''
           PR_TITLE="${{ github.event.pull_request.title }}"
           if [[ $PR_TITLE =~ 'Backport' ]]; then
             # Extracting the original PR number from the backport's PR title
-            if [[ $PR_TITLE =~ \#([0-9]+) ]]; then
-              original_pr_number="${BASH_REMATCH[1]}"
-              echo "Extracted PR number: $original_pr_number"
-            else
-              echo "⚠️ The PR title dose not contain original PR number. PR title should be in form: [stableBranchName] Backport #originalPRNumber"
-              exit 1
-            fi
+            original_pr_number=$(extract_pr_number_from_pr_title "$PR_TITLE")
+            echo "Extracted PR number: $original_pr_number"
           else
             original_pr_number=${{ github.event.pull_request.number }}
           fi

.github/workflows/check-semver.yml

@@ -72,11 +72,36 @@ jobs:
           rustup default $TOOLCHAIN
           rustup component add rust-src --toolchain $TOOLCHAIN
 
-      - name: install parity-publish
+      - name: Install parity-publish
+        if: ${{ !contains(github.event.pull_request.labels.*.name, 'R0-silent') }}
         # Set the target dir to cache the build.
         run: CARGO_TARGET_DIR=./target/ cargo install parity-publish@0.8.0 --locked -q
 
-      - name: check semver
+      - name: Get original PR number
+        if: ${{ !contains(github.event.pull_request.labels.*.name, 'R0-silent') }}
+        shell: bash
+        env:
+          PR_TITLE: ${{ github.event.pull_request.title }}
+        run: |
+          . ./.github/scripts/common/lib.sh
+          original_pr_number=''
+
+          echo "Checking PR title: $PR_TITLE"
+
+          if [[ "$PR_TITLE" =~ 'Backport' ]]; then
+            # Extracting the original PR number from the backport's PR title
+            original_pr_number=$(extract_pr_number_from_pr_title "$PR_TITLE")
+            echo "Extracted PR number: $original_pr_number"
+          else
+            original_pr_number=${{ github.event.pull_request.number }}
+          fi
+          echo "PR_NUMBER=$original_pr_number" >> $GITHUB_ENV
+
+      - name: Check semver
+        if: ${{ !contains(github.event.pull_request.labels.*.name, 'R0-silent') }}
+        env:
+          PRDOC_EXTRA_ARGS: ${{ env.PRDOC_EXTRA_ARGS }}
+          PR: ${{ env.PR_NUMBER }}
         run: |
           export CARGO_TARGET_DIR=target
           export RUSTFLAGS='-A warnings -A missing_docs'
@@ -96,6 +121,3 @@ jobs:
 
             exit 1
           fi
-        env:
-          PR: ${{ github.event.pull_request.number }}
-          PRDOC_EXTRA_ARGS: ${{ env.PRDOC_EXTRA_ARGS }}