Initial checkin of lldb code from internal Apple repo.

llvm-svn: 105619

1 files changed, 123 insertions, 0 deletions

diff --git a/lldb/source/Interpreter/CommandObjectRegexCommand.cpp b/lldb/source/Interpreter/CommandObjectRegexCommand.cpp
new file mode 100644
index 00000000000..b3fa6a41d97
--- /dev/null
+++ b/lldb/source/Interpreter/CommandObjectRegexCommand.cpp
@@ -0,0 +1,123 @@
+//===-- CommandObjectRegexCommand.cpp ---------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Interpreter/CommandObjectRegexCommand.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "lldb/Interpreter/CommandInterpreter.h"
+#include "lldb/Interpreter/CommandReturnObject.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+//----------------------------------------------------------------------
+// CommandObjectRegexCommand constructor
+//----------------------------------------------------------------------
+CommandObjectRegexCommand::CommandObjectRegexCommand
+(
+    const char *name,
+    const char *help,
+    const char *syntax,
+    uint32_t max_matches
+) :
+    CommandObject (name, help, syntax),
+    m_entries(),
+    m_max_matches (max_matches)
+{
+}
+
+//----------------------------------------------------------------------
+// Destructor
+//----------------------------------------------------------------------
+CommandObjectRegexCommand::~CommandObjectRegexCommand()
+{
+}
+
+
+bool
+CommandObjectRegexCommand::Execute
+(
+    Args& command,
+    CommandContext *context,
+    CommandInterpreter *interpreter,
+    CommandReturnObject &result
+)
+{
+    return false;
+}
+
+
+bool
+CommandObjectRegexCommand::ExecuteRawCommandString
+(
+    const char *command,
+    CommandContext *context,
+    CommandInterpreter *interpreter,
+    CommandReturnObject &result
+)
+{
+    if (command)
+    {
+        EntryCollection::const_iterator pos, end = m_entries.end();
+        for (pos = m_entries.begin(); pos != end; ++pos)
+        {
+            if (pos->regex.Execute (command, m_max_matches))
+            {
+                std::string new_command(pos->command);
+                std::string match_str;
+                char percent_var[8];
+                size_t idx, percent_var_idx;
+                for (uint32_t match_idx=1; match_idx <= m_max_matches; ++match_idx)
+                {
+                    if (pos->regex.GetMatchAtIndex (command, match_idx, match_str))
+                    {
+                        const int percent_var_len = ::snprintf (percent_var, sizeof(percent_var), "%%%u", match_idx);
+                        for (idx = 0; (percent_var_idx = new_command.find(percent_var, idx)) != std::string::npos; )
+                        {
+                            new_command.erase(percent_var_idx, percent_var_len);
+                            new_command.insert(percent_var_idx, match_str);
+                            idx += percent_var_idx + match_str.size();
+                        }
+                    }
+                }
+                // Interpret the new command and return this as the result!
+//                if (m_options.verbose)
+//                    result.GetOutputStream().Printf("%s\n", new_command.c_str());
+                return interpreter->HandleCommand(new_command.c_str(), true, result);
+            }
+        }
+        result.SetStatus(eReturnStatusFailed);
+        result.AppendErrorWithFormat("Command contents '%s' failed to match any regular expression in the '%s' regex command.\n",
+                                    command,
+                                    m_cmd_name.c_str());
+        return false;
+    }
+    result.AppendError("empty command passed to regular exression command");
+    result.SetStatus(eReturnStatusFailed);
+    return false;
+}
+
+
+bool
+CommandObjectRegexCommand::AddRegexCommand (const char *re_cstr, const char *command_cstr)
+{
+    m_entries.resize(m_entries.size() + 1);
+    // Only add the regular expression if it compiles
+    if (m_entries.back().regex.Compile (re_cstr, REG_EXTENDED))
+    {
+        m_entries.back().command.assign (command_cstr);
+        return true;
+    }
+    // The regex didn't compile...
+    m_entries.pop_back();
+    return false;
+}