every.channel: sanitized baseline

scripts/coverage-summary.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+lcov_path="${1:-}"
+if [[ -z "${lcov_path}" || ! -f "${lcov_path}" ]]; then
+  echo "usage: $0 <path/to/file.lcov>" >&2
+  exit 2
+fi
+
+# lcov format includes per-file LF (lines found) and LH (lines hit). Sum those.
+awk '
+  /^LF:/ { lf += substr($0, 4) }
+  /^LH:/ { lh += substr($0, 4) }
+  END {
+    if (lf == 0) {
+      printf("lines: 0/0 (0.00%%)\n")
+      exit 0
+    }
+    pct = (lh * 100.0) / lf
+    printf("lines: %d/%d (%.2f%%)\n", lh, lf, pct)
+  }
+' "${lcov_path}"
+