From dac1e6b7d3731d9d79f9cc3b44f238593a9681e7 Mon Sep 17 00:00:00 2001
From: martin-mfg <2026226+martin-mfg@users.noreply.github.com>
Date: Tue, 20 May 2025 10:27:19 +0200
Subject: [PATCH] optimize regex (#21188)

---
 .../resources/Java/libraries/okhttp-gson/ApiClient.mustache     | 2 +-
 .../src/main/resources/Java/libraries/vertx/ApiClient.mustache  | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../src/main/java/org/openapitools/client/ApiClient.java        | 2 +-
 .../vertx/src/main/java/org/openapitools/client/ApiClient.java  | 2 +-
 20 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/ApiClient.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/ApiClient.mustache
index 3bfe805da00..76afb7b261d 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/ApiClient.mustache
@@ -1056,7 +1056,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/vertx/ApiClient.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/vertx/ApiClient.mustache
index 84dde643aff..4867dfbfdcd 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/vertx/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/vertx/ApiClient.mustache
@@ -543,7 +543,7 @@ public class ApiClient{{#jsr310}} extends JavaTimeFormatter{{/jsr310}} {
      * @return The sanitized filename
      */
     protected String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/echo_api/java/okhttp-gson-user-defined-templates/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/echo_api/java/okhttp-gson-user-defined-templates/src/main/java/org/openapitools/client/ApiClient.java
index bfb5a852bfb..92d9e24b0cd 100644
--- a/samples/client/echo_api/java/okhttp-gson-user-defined-templates/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/echo_api/java/okhttp-gson-user-defined-templates/src/main/java/org/openapitools/client/ApiClient.java
@@ -896,7 +896,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/echo_api/java/okhttp-gson/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/echo_api/java/okhttp-gson/src/main/java/org/openapitools/client/ApiClient.java
index eacaab1ca95..0b799be63ef 100644
--- a/samples/client/echo_api/java/okhttp-gson/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/echo_api/java/okhttp-gson/src/main/java/org/openapitools/client/ApiClient.java
@@ -826,7 +826,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/others/java/okhttp-gson-oneOf-array/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/others/java/okhttp-gson-oneOf-array/src/main/java/org/openapitools/client/ApiClient.java
index b66dec3b033..261ca8a9b5e 100644
--- a/samples/client/others/java/okhttp-gson-oneOf-array/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/others/java/okhttp-gson-oneOf-array/src/main/java/org/openapitools/client/ApiClient.java
@@ -800,7 +800,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/others/java/okhttp-gson-oneOf/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/others/java/okhttp-gson-oneOf/src/main/java/org/openapitools/client/ApiClient.java
index 92a4d40dbc6..95a82f2050e 100644
--- a/samples/client/others/java/okhttp-gson-oneOf/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/others/java/okhttp-gson-oneOf/src/main/java/org/openapitools/client/ApiClient.java
@@ -800,7 +800,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/others/java/okhttp-gson-streaming/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/others/java/okhttp-gson-streaming/src/main/java/org/openapitools/client/ApiClient.java
index 1e2ad43cf40..072d7771706 100644
--- a/samples/client/others/java/okhttp-gson-streaming/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/others/java/okhttp-gson-streaming/src/main/java/org/openapitools/client/ApiClient.java
@@ -800,7 +800,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/ApiClient.java
index bfb5a852bfb..92d9e24b0cd 100644
--- a/samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/ApiClient.java
@@ -896,7 +896,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/okhttp-gson-3.1/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson-3.1/src/main/java/org/openapitools/client/ApiClient.java
index bfb5a852bfb..92d9e24b0cd 100644
--- a/samples/client/petstore/java/okhttp-gson-3.1/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson-3.1/src/main/java/org/openapitools/client/ApiClient.java
@@ -896,7 +896,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/okhttp-gson-awsv4signature/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson-awsv4signature/src/main/java/org/openapitools/client/ApiClient.java
index 4debd5d93f8..251ca6bee51 100644
--- a/samples/client/petstore/java/okhttp-gson-awsv4signature/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson-awsv4signature/src/main/java/org/openapitools/client/ApiClient.java
@@ -916,7 +916,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/ApiClient.java
index 4d8ad9ff603..6d00abd5b2a 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/ApiClient.java
@@ -901,7 +901,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/okhttp-gson-group-parameter/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson-group-parameter/src/main/java/org/openapitools/client/ApiClient.java
index bfb5a852bfb..92d9e24b0cd 100644
--- a/samples/client/petstore/java/okhttp-gson-group-parameter/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson-group-parameter/src/main/java/org/openapitools/client/ApiClient.java
@@ -896,7 +896,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/okhttp-gson-nullable-required/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson-nullable-required/src/main/java/org/openapitools/client/ApiClient.java
index b372cb8f502..3fe955d4c91 100644
--- a/samples/client/petstore/java/okhttp-gson-nullable-required/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson-nullable-required/src/main/java/org/openapitools/client/ApiClient.java
@@ -899,7 +899,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/ApiClient.java
index e4d7ff80297..eeddbb3ee08 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/ApiClient.java
@@ -902,7 +902,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/okhttp-gson-swagger1/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson-swagger1/src/main/java/org/openapitools/client/ApiClient.java
index bfb5a852bfb..92d9e24b0cd 100644
--- a/samples/client/petstore/java/okhttp-gson-swagger1/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson-swagger1/src/main/java/org/openapitools/client/ApiClient.java
@@ -896,7 +896,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/okhttp-gson-swagger2/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson-swagger2/src/main/java/org/openapitools/client/ApiClient.java
index bfb5a852bfb..92d9e24b0cd 100644
--- a/samples/client/petstore/java/okhttp-gson-swagger2/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson-swagger2/src/main/java/org/openapitools/client/ApiClient.java
@@ -896,7 +896,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/ApiClient.java
index 885ca7f5a30..d8da2755813 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/ApiClient.java
@@ -970,7 +970,7 @@ public class ApiClient {
      * @return The sanitized filename
      */
     public String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/ApiClient.java
index 32308f790b2..1b94f896a4d 100644
--- a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/ApiClient.java
@@ -541,7 +541,7 @@ public class ApiClient extends JavaTimeFormatter {
      * @return The sanitized filename
      */
     protected String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/vertx-supportVertxFuture/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/vertx-supportVertxFuture/src/main/java/org/openapitools/client/ApiClient.java
index d4ef4eaad42..c5e3a151aff 100644
--- a/samples/client/petstore/java/vertx-supportVertxFuture/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/vertx-supportVertxFuture/src/main/java/org/openapitools/client/ApiClient.java
@@ -545,7 +545,7 @@ public class ApiClient extends JavaTimeFormatter {
      * @return The sanitized filename
      */
     protected String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**
diff --git a/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/ApiClient.java
index d4ef4eaad42..c5e3a151aff 100644
--- a/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/ApiClient.java
@@ -545,7 +545,7 @@ public class ApiClient extends JavaTimeFormatter {
      * @return The sanitized filename
      */
     protected String sanitizeFilename(String filename) {
-        return filename.replaceAll(".*[/\\\\]", "");
+        return filename.replaceFirst("^.*[/\\\\]", "");
     }
 
     /**