Remove ballerina/regex dependency

gradle.properties

@@ -28,7 +28,6 @@ observeInternalVersion=1.2.2-20240404-122400-22ed15c
 stdlibConstraintVersion=1.4.0-20230831-142400-50e4023
 stdlibHttpVersion=2.10.13-20240327-141300-ecd1355
 stdlibIoVersion=1.6.0-20230831-135000-049f91a
-stdlibRegexVersion=1.3.2
 stdlibOsVersion=1.8.0-20230831-142200-cb96913
 stdlibTimeVersion=2.4.0-20230831-134800-62143cd
 stdlibUrlVersion=2.4.0-20230831-134600-aab5a12

prometheus-extension-ballerina/Dependencies.toml

@@ -19,11 +19,6 @@ org = "ballerina"
 name = "io"
 version = "@stdlib.io.version@"
 
-[[dependency]]
-org = "ballerina"
-name = "regex"
-version = "@stdlib.regex.version@"
-
 [[dependency]]
 org = "ballerina"
 name = "http"

prometheus-extension-ballerina/build.gradle

@@ -115,15 +115,13 @@ def stripBallerinaExtensionVersion(String extVersion) {
 task updateTomlVerions {
     doLast {
         def stdlibDependentIoVersion = stripBallerinaExtensionVersion(project.stdlibIoVersion)
-        def stdlibDependentRegexVersion = stripBallerinaExtensionVersion(project.stdlibRegexVersion)
         def stdlibDependentHttpVersion = stripBallerinaExtensionVersion(project.stdlibHttpVersion)
 
         def newConfig = ballerinaConfigFile.text.replace("@project.version@", project.version)
         newConfig = newConfig.replace("@toml.version@", tomlVersion)
         ballerinaConfigFile.text = newConfig
 
         def newDependencyConfig = ballerinaDependencyFile.text.replace("@stdlib.io.version@", stdlibDependentIoVersion)
-        newDependencyConfig = newDependencyConfig.replace("@stdlib.regex.version@", stdlibDependentRegexVersion)
         newDependencyConfig = newDependencyConfig.replace("@stdlib.http.version@", stdlibDependentHttpVersion)
         ballerinaDependencyFile.text = newDependencyConfig
     }

prometheus-extension-ballerina/metric_reporter.bal

@@ -18,7 +18,6 @@ import ballerina/io;
 import ballerina/http;
 import ballerina/lang.'string as str;
 import ballerina/observe;
-import ballerina/regex;
 
 const REPORTER_NAME = "prometheus";
 
@@ -161,7 +160,8 @@ isolated function getTagsString(map<string> labels) returns string {
 # + str - string to be escaped.
 # + return - escaped string.
 isolated function getEscapedName(string str) returns string {
-    return regex:replaceAll(str, "[^a-zA-Z0-9:_]", "_");
+    string:RegExp regExp = re `[^a-zA-Z0-9:_]`;
+    return regExp.replaceAll(str, "_");
 }
 
 # Only [^a-zA-Z0-9\\/.:_* ] are valid in metric lable values, any other characters
@@ -170,7 +170,8 @@ isolated function getEscapedName(string str) returns string {
 # + str - string to be escaped.
 # + return - escaped string.
 isolated function getEscapedLabelValue(string str) returns string {
-    return regex:replaceAll(str, "[^a-zA-Z0-9\\/.:_* ]", "_");
+    string:RegExp regExp = re `[^a-zA-Z0-9\\/.:_* ]`;
+    return regExp.replaceAll(str, "_");
 }
 
 # Add the summary type name to summary type metrics.