Provide stdout and stderr output in the Observatory debugger.

runtime/bin/file.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "bin/file.h"
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
 #include "bin/io_buffer.h"
 #include "bin/utils.h"
 
 #include "include/dart_api.h"
+#include "include/dart_tools_api.h"
 
 namespace dart {
 namespace bin {
 
 static const int kMSPerSecond = 1000;
 
+// Are we capturing output from either stdout or stderr for the VM Service?
+bool capture_stdio = false;
+
+// Are we capturing output from stdout for the VM service?
+bool capture_stdout = false;
+
+// Are we capturing output from stderr for the VM service?
+bool capture_stderr = false;
+
 
 // The file pointer has been passed into Dart as an intptr_t and it is safe
 // to pull it out of Dart as a 64-bit integer, cast it to an intptr_t and
 // from there to a File pointer.
 static File* GetFilePointer(Dart_Handle handle) {
   intptr_t value = DartUtils::GetIntptrValue(handle);
   return reinterpret_cast<File*>(value);
 }
 
 
@@ skipping 16 matching lines @@
   int64_t remaining = num_bytes;
   const char* current_buffer = reinterpret_cast<const char*>(buffer);
   while (remaining > 0) {
     int64_t bytes_written = Write(current_buffer, remaining);
     if (bytes_written < 0) {
       return false;
     }
     remaining -= bytes_written;  // Reduce the number of remaining bytes.
     current_buffer += bytes_written;  // Move the buffer forward.
   }
+  if (capture_stdio) {
+    intptr_t fd = GetFD();
+    if (fd == STDOUT_FILENO && capture_stdout) {
+      Dart_ServiceSendDataEvent("Stdout", "WriteEvent",
+                                reinterpret_cast<const uint8_t*>(buffer),
+                                num_bytes);
+    } else if (fd == STDERR_FILENO && capture_stderr) {
+      Dart_ServiceSendDataEvent("Stderr", "WriteEvent",
+                                reinterpret_cast<const uint8_t*>(buffer),
+                                num_bytes);
+    }
+  }
   return true;
 }
 
 
 File::FileOpenMode File::DartModeToFileMode(DartFileOpenMode mode) {
   ASSERT(mode == File::kDartRead ||
          mode == File::kDartWrite ||
          mode == File::kDartAppend ||
          mode == File::kDartWriteOnly ||
          mode == File::kDartWriteOnlyAppend);
@@ skipping 509 matching lines @@
   } else {
     Dart_Handle err = DartUtils::NewDartOSError();
     if (Dart_IsError(err)) Dart_PropagateError(err);
     Dart_SetReturnValue(args, err);
   }
 }
 
 
 void FUNCTION_NAME(File_OpenStdio)(Dart_NativeArguments args) {
   int64_t fd = DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
-  ASSERT(fd == 0 || fd == 1 || fd == 2);
+  ASSERT(fd == STDIN_FILENO || fd == STDOUT_FILENO || fd == STDERR_FILENO);
   File* file = File::OpenStdio(static_cast<int>(fd));
   Dart_SetReturnValue(args, Dart_NewInteger(reinterpret_cast<intptr_t>(file)));
 }
 
 
 void FUNCTION_NAME(File_GetStdioHandleType)(Dart_NativeArguments args) {
   int64_t fd = DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
-  ASSERT(fd == 0 || fd == 1 || fd == 2);
+  ASSERT(fd == STDIN_FILENO || fd == STDOUT_FILENO || fd == STDERR_FILENO);
   File::StdioHandleType type = File::GetStdioHandleType(static_cast<int>(fd));
   Dart_SetReturnValue(args, Dart_NewInteger(type));
 }
 
 
 void FUNCTION_NAME(File_GetType)(Dart_NativeArguments args) {
   if (Dart_IsString(Dart_GetNativeArgument(args, 0)) &&
       Dart_IsBoolean(Dart_GetNativeArgument(args, 1))) {
     const char* str =
         DartUtils::GetStringValue(Dart_GetNativeArgument(args, 0));
@@ skipping 653 matching lines @@
       }
     } else {
       return CObject::FileClosedError();
     }
   }
   return CObject::IllegalArgumentError();
 }
 
 }  // namespace bin
 }  // namespace dart