Bugfix for local repo casing issue on Linux (#1750)

Author: anamnavi

src/code/LocalServerApiCalls.cs

@@ -260,29 +260,18 @@ private FindResults FindNameHelper(string packageName, string[] tags, bool inclu
             string actualPkgName = packageName;
 
             // this regex pattern matches packageName followed by a version (4 digit or 3 with prerelease word)
-            string regexPattern = $"{packageName}" + @".\d+\.\d+\.\d+(?:[a-zA-Z0-9-.]+|.\d)?.nupkg";
-            Regex rx = new Regex(regexPattern, RegexOptions.Compiled | RegexOptions.IgnoreCase);
+            string regexPattern = $"{packageName}" + @"(\.\d+){1,3}(?:[a-zA-Z0-9-.]+|.\d)?\.nupkg";
             _cmdletPassedIn.WriteDebug($"package file name pattern to be searched for is: {regexPattern}");
 
             foreach (string path in Directory.GetFiles(Repository.Uri.LocalPath))
             {
                 string packageFullName = Path.GetFileName(path);
-                MatchCollection matches = rx.Matches(packageFullName);
-                if (matches.Count == 0)
-                {
-                    continue;
-                }
-
-                Match match = matches[0];
-
-                GroupCollection groups = match.Groups;
-                if (groups.Count == 0)
+                bool isMatch = Regex.IsMatch(packageFullName, regexPattern, RegexOptions.IgnoreCase);
+                if (!isMatch)
                 {
                     continue;
                 }
 
-                Capture group = groups[0];
-
                 NuGetVersion nugetVersion = GetInfoFromFileName(packageFullName: packageFullName, packageName: packageName, actualName: out actualPkgName, out errRecord);
                 _cmdletPassedIn.WriteDebug($"Version parsed as '{nugetVersion}'");
 
@@ -389,30 +378,19 @@ private FindResults FindVersionHelper(string packageName, string version, string
 
             // this regex pattern matches packageName followed by the requested version
             string regexPattern = $"{packageName}.{requiredVersion.ToNormalizedString()}" + @".nupkg";
-            Regex rx = new Regex(regexPattern, RegexOptions.Compiled | RegexOptions.IgnoreCase);
             _cmdletPassedIn.WriteDebug($"pattern is: {regexPattern}");
             string pkgPath = String.Empty;
             string actualPkgName = String.Empty;
 
             foreach (string path in Directory.GetFiles(Repository.Uri.LocalPath))
             {
                 string packageFullName = Path.GetFileName(path);
-                MatchCollection matches = rx.Matches(packageFullName);
-                if (matches.Count == 0)
-                {
-                    continue;
-                }
-
-                Match match = matches[0];
-
-                GroupCollection groups = match.Groups;
-                if (groups.Count == 0)
+                bool isMatch = Regex.IsMatch(packageFullName, regexPattern, RegexOptions.IgnoreCase);
+                if (!isMatch)
                 {
                     continue;
                 }
 
-                Capture group = groups[0];
-
                 NuGetVersion nugetVersion = GetInfoFromFileName(packageFullName: packageFullName, packageName: packageName, actualName: out actualPkgName, out errRecord);
                 _cmdletPassedIn.WriteDebug($"Version parsed as '{nugetVersion}'");
 
@@ -425,7 +403,7 @@ private FindResults FindVersionHelper(string packageName, string version, string
                 {
                     _cmdletPassedIn.WriteDebug("Found matching version");
                     string pkgFullName = $"{actualPkgName}.{nugetVersion.ToString()}.nupkg";
-                    pkgPath = Path.Combine(Repository.Uri.LocalPath, pkgFullName);
+                    pkgPath = path;
                     break;
                 }
             }

test/FindPSResourceTests/FindPSResourceLocal.Tests.ps1

@@ -60,6 +60,13 @@ Describe 'Test Find-PSResource for local repositories' -tags 'CI' {
         $res.Version | Should -Be "1.0.0"
     }
 
+    It "find resource given specific Name with incorrect casing and Version (should return correct casing)" {
+        # FindVersion()
+        $res = Find-PSResource -Name "test_local_mod3" -Version "1.0.0" -Repository $localRepo
+        $res.Name | Should -Be $testModuleName3
+        $res.Version | Should -Be "1.0.0"
+    }
+
     It "find resource given specific Name, Version null (module) from a UNC-based local repository" {
         # FindName()
         $res = Find-PSResource -Name $testModuleName -Repository $localUNCRepo