Initial checkin of lldb code from internal Apple repo.

llvm-svn: 105619

1 files changed, 96 insertions, 0 deletions

diff --git a/lldb/source/Commands/CommandObjectApropos.cpp b/lldb/source/Commands/CommandObjectApropos.cpp
new file mode 100644
index 00000000000..0fcc093901f
--- /dev/null
+++ b/lldb/source/Commands/CommandObjectApropos.cpp
@@ -0,0 +1,96 @@
+//===-- CommandObjectApropos.cpp ---------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CommandObjectApropos.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "lldb/Core/Args.h"
+#include "lldb/Core/Options.h"
+
+#include "lldb/Interpreter/CommandInterpreter.h"
+#include "lldb/Interpreter/CommandReturnObject.h"
+#include "lldb/Interpreter/CommandObjectMultiword.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+//-------------------------------------------------------------------------
+// CommandObjectApropos
+//-------------------------------------------------------------------------
+
+CommandObjectApropos::CommandObjectApropos () :
+    CommandObject ("apropos",
+                     "Finds a list of debugger commands related to a particular word/subject.",
+                     "apropos <search-word>")
+{
+}
+
+CommandObjectApropos::~CommandObjectApropos()
+{
+}
+
+
+bool
+CommandObjectApropos::Execute (Args &command, CommandContext *context, CommandInterpreter *interpreter, 
+                              CommandReturnObject &result)
+{
+    const int argc = command.GetArgumentCount ();
+
+    if (argc == 1)
+    {
+        const char *search_word = command.GetArgumentAtIndex(0);
+        if ((search_word != NULL)
+            && (strlen (search_word) > 0))
+        {
+            // The bulk of the work must be done inside the Command Interpreter, since the command dictionary
+            // is private.
+            StringList commands_found;
+            StringList commands_help;
+            interpreter->FindCommandsForApropos (search_word, commands_found, commands_help);
+            if (commands_found.GetSize() == 0)
+            {
+                result.AppendMessageWithFormat ("No commands found pertaining to '%s'.", search_word);
+                result.AppendMessage ("Try 'help' to see a complete list of debugger commands.");
+            }
+            else
+            {
+                result.AppendMessageWithFormat ("The following commands may relate to '%s':\n", search_word);
+                size_t max_len = 0;
+
+                for (int i = 0; i < commands_found.GetSize(); ++i)
+                {
+                    int len = strlen (commands_found.GetStringAtIndex (i));
+                    if (len > max_len)
+                        max_len = len;
+                }
+
+                for (int i = 0; i < commands_found.GetSize(); ++i)
+                    interpreter->OutputFormattedHelpText (result.GetOutputStream(), commands_found.GetStringAtIndex(i),
+                                                         "--", commands_help.GetStringAtIndex(i), max_len);
+
+            }
+            result.SetStatus (eReturnStatusSuccessFinishNoResult);
+        }
+        else
+        {
+            result.AppendError ("'' is not a valid search word.\n");
+            result.SetStatus (eReturnStatusFailed);
+        }
+    }
+    else
+    {
+        result.AppendError ("'apropos' must be called with exactly one argument.\n");
+        result.SetStatus (eReturnStatusFailed);
+    }
+
+    return result.Succeeded();
+}