Add a system() call to the d8 shell (Unix only).

Review URL: http://codereview.chromium.org/42641

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1633 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

samples/shell.cc

-// Copyright 2008 the V8 project authors. All rights reserved.
+// Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -129,6 +129,7 @@ v8::Handle<v8::Value> Print(const v8::Arguments& args) {
     printf("%s", cstr);
   }
   printf("\n");
+  fflush(stdout);
   return v8::Undefined();
 }
 

src/SConscript

@@ -83,6 +83,24 @@ D8_FILES = {
   'all': [
     'd8.cc', 'd8-debug.cc'
   ],
+  'os:linux': [
+    'd8-posix.cc'
+  ],
+  'os:macos': [
+    'd8-posix.cc'
+  ],
+  'os:android': [
+    'd8-posix.cc'
+  ],
+  'os:freebsd': [
+    'd8-posix.cc'
+  ],
+  'os:windows': [
+    'd8-windows.cc'
+  ],
+  'os:nullos': [
+    'd8-windows.cc'   # Empty implementation at the moment.
+  ],
   'console:readline': [
     'd8-readline.cc'
   ]

src/d8-windows.cc

+// Copyright 2009 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "d8.h"
+#include "d8-debug.h"
+#include "debug.h"
+#include "api.h"
+
+
+namespace v8 {
+
+
+Handle<Value> Shell::System(const Arguments& args) {
+  Handle<String> error_message =
+      String::New("system() is not yet supported on your OS");
+  return ThrowException(error_message);
+}
+
+
+}  // namespace v8

src/d8.cc

-// Copyright 2008 the V8 project authors. All rights reserved.
+// Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -342,6 +342,7 @@ void Shell::Initialize() {
   global_template->Set(String::New("load"), FunctionTemplate::New(Load));
   global_template->Set(String::New("quit"), FunctionTemplate::New(Quit));
   global_template->Set(String::New("version"), FunctionTemplate::New(Version));
+  global_template->Set(String::New("system"), FunctionTemplate::New(System));
 
   utility_context_ = Context::New(NULL, global_template);
   utility_context_->SetSecurityToken(Undefined());

src/d8.h

-// Copyright 2008 the V8 project authors. All rights reserved.
+// Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -130,6 +130,17 @@ class Shell: public i::AllStatic {
   static Handle<Value> Quit(const Arguments& args);
   static Handle<Value> Version(const Arguments& args);
   static Handle<Value> Load(const Arguments& args);
+  // system("program_name", ["arg1", "arg2", ...], timeout1, timeout2) will run
+  // the command, passing the arguments to the program.  The standard output of
+  // the program will be picked up and returned as a multiline string.  If
+  // timeout1 is present then it should be a number.  -1 indicates no timeout
+  // and a positive number is used as a timeout in milliseconds that limits the
+  // time spent waiting between receiving output characters from the program.
+  // timeout2, if present, should be a number indicating the limit in
+  // milliseconds on the total running time of the program.  Exceptions are
+  // thrown on timeouts or other errors or if the exit status of the program
+  // indicates an error.
+  static Handle<Value> System(const Arguments& args);
 
   static Handle<Context> utility_context() { return utility_context_; }