feat: implement file and text search functionality with glob pattern support

com.microsoft.copilot.eclipse.core/META-INF/MANIFEST.MF

@@ -43,6 +43,7 @@ Require-Bundle: org.eclipse.lsp4e;bundle-version="0.18.1",
  org.eclipse.wildwebdeveloper.embedder.node;bundle-version="1.0.3";resolution:=optional,
  org.eclipse.core.net;bundle-version="1.5.200",
  org.eclipse.core.resources;bundle-version="3.20.0",
+ org.eclipse.core.filesystem;bundle-version="1.10.200",
  org.eclipse.core.runtime;bundle-version="[3.30.0,4.0.0)",
  org.apache.httpcomponents.client5.httpclient5;bundle-version="5.2.1",
  org.apache.httpcomponents.core5.httpcore5;bundle-version="5.2.3",

com.microsoft.copilot.eclipse.core/src/com/microsoft/copilot/eclipse/core/lsp/CopilotLanguageClient.java

@@ -47,6 +47,10 @@
 import com.microsoft.copilot.eclipse.core.lsp.protocol.ConversationContextParams;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.CurrentEditorContext;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.DidChangeFeatureFlagsParams;
+import com.microsoft.copilot.eclipse.core.lsp.protocol.FindFilesParams;
+import com.microsoft.copilot.eclipse.core.lsp.protocol.FindFilesResult;
+import com.microsoft.copilot.eclipse.core.lsp.protocol.FindTextInFilesParams;
+import com.microsoft.copilot.eclipse.core.lsp.protocol.FindTextInFilesResult;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.GetWatchedFilesRequest;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.GetWatchedFilesResponse;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.InvokeClientToolConfirmationParams;
@@ -345,6 +349,22 @@ public CompletableFuture<ReadDirectoryResult> readDirectory(String uri) {
     return CompletableFuture.supplyAsync(() -> FileUtils.readDirectoryEntries(uri));
   }
 
+  /**
+   * Searches for files matching a glob pattern under the given base URI.
+   */
+  @JsonRequest("workspace/findFiles")
+  public CompletableFuture<FindFilesResult> findFiles(FindFilesParams params) {
+    return CompletableFuture.supplyAsync(() -> FileUtils.findFiles(params));
+  }
+
+  /**
+   * Searches for text (or a regex) in files under the given base URI.
+   */
+  @JsonRequest("workspace/findTextInFiles")
+  public CompletableFuture<FindTextInFilesResult> findTextInFiles(FindTextInFilesParams params) {
+    return CompletableFuture.supplyAsync(() -> FileUtils.findTextInFiles(params));
+  }
+
   /**
    * Handles the progress notification for chat replies.
    */

com.microsoft.copilot.eclipse.core/src/com/microsoft/copilot/eclipse/core/lsp/protocol/FindFilesParams.java

@@ -0,0 +1,15 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+package com.microsoft.copilot.eclipse.core.lsp.protocol;
+
+/**
+ * Parameters for the {@code workspace/findFiles} request. Used by the language server to ask the client to search for
+ * files matching a glob pattern under a given base URI (e.g. a semanticfs workspace folder).
+ *
+ * @param baseUri the base URI to search under (e.g. a semanticfs workspace folder)
+ * @param pattern the glob pattern to match file paths against
+ * @param maxResults the maximum number of results to return (optional)
+ */
+public record FindFilesParams(String baseUri, String pattern, int maxResults) {
+}

com.microsoft.copilot.eclipse.core/src/com/microsoft/copilot/eclipse/core/lsp/protocol/FindFilesResult.java

@@ -0,0 +1,14 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+package com.microsoft.copilot.eclipse.core.lsp.protocol;
+
+import java.util.List;
+
+/**
+ * Result of the {@code workspace/findFiles} request, containing URIs of files matching the glob pattern.
+ *
+ * @param uris the list of file URIs matching the glob pattern
+ */
+public record FindFilesResult(List<String> uris) {
+}

com.microsoft.copilot.eclipse.core/src/com/microsoft/copilot/eclipse/core/lsp/protocol/FindTextInFilesParams.java

@@ -0,0 +1,18 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+package com.microsoft.copilot.eclipse.core.lsp.protocol;
+
+/**
+ * Parameters for the {@code workspace/findTextInFiles} request. Used by the language server to ask the client to search
+ * for text (or a regex) in files under a given base URI.
+ *
+ * @param baseUri the base URI to search under (e.g. a semanticfs workspace folder)
+ * @param query the text or regex pattern to search for in files
+ * @param isRegexp whether the query is a regular expression
+ * @param includePattern an optional glob pattern to filter which files to search
+ * @param maxResults the maximum number of results to return (optional)
+ */
+public record FindTextInFilesParams(String baseUri, String query, Boolean isRegexp, String includePattern,
+    int maxResults) {
+}

com.microsoft.copilot.eclipse.core/src/com/microsoft/copilot/eclipse/core/lsp/protocol/FindTextInFilesResult.java

@@ -0,0 +1,25 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+package com.microsoft.copilot.eclipse.core.lsp.protocol;
+
+import java.util.List;
+
+/**
+ * Result of the {@code workspace/findTextInFiles} request, containing the list of matches.
+ *
+ * @param matches the list of text search matches
+ */
+public record FindTextInFilesResult(List<TextSearchMatch> matches) {
+
+  /**
+   * A single text search match. Field names mirror the CLS protocol.
+   *
+   * @param uri the URI of the file containing the match
+   * @param lineNumber the 1-based line number of the match within the file
+   * @param lineText the full text of the line containing the match
+   */
+  public record TextSearchMatch(String uri, int lineNumber, String lineText) {
+  }
+
+}