From c65003f41276ea33fe3a3a5d53df8b340462e8fa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?v=C3=ADn=CE=B1=D1=87=20pupp=CE=B1l?=
 <8843216+vinaypuppal@users.noreply.github.com>
Date: Fri, 29 Sep 2023 13:12:07 +0530
Subject: [PATCH] Fix filename regex escaping (#270)

---
 src/coverage.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/coverage.ts b/src/coverage.ts
index b47f31a..2629835 100644
--- a/src/coverage.ts
+++ b/src/coverage.ts
@@ -36,6 +36,10 @@ export function parseCoverageReport(report: string, files: CommitsComparison): F
   return {averageCover: avgCover, newCover, modifiedCover}
 }
 
+function escapeRegExp(value: string) {
+  return value.replace(/[.*+\-?^${}()|[\]\\]/g, '\\$&'); 
+}
+
 export function parseFilesCoverage(
   report: string,
   source: string,
@@ -43,7 +47,7 @@ export function parseFilesCoverage(
   threshold: number
 ): Coverage[] | undefined {
   const coverages = files?.map(file => {
-    const fileName = file.replace(`${source}/`, '').replace(/\//g, '\\/')
+    const fileName = escapeRegExp(file.replace(`${source}/`, ''))
     const regex = new RegExp(`.*filename="${fileName}".*line-rate="(?<cover>[0-9]+[.]*[0-9]*)".*`)
     const match = report.match(regex)
     const cover = match?.groups ? parseFloat(match.groups['cover']) : -1