From ea508635deaeeceb5629d0b09e17b03f8b767ade Mon Sep 17 00:00:00 2001
From: Greg Clayton <gclayton@apple.com>
Date: Tue, 18 Nov 2014 00:43:17 +0000
Subject: [PATCH] Have CommandObjectCommandsAddRegex inherit from
 IOHandlerDelegateMultiline so it will not immediately terminate after the
 first regular expression in "command regex <name>" commands.

Fixed the prompt to not include non-printable characters as it was hosing up the prompt when you ran "command regex foo" and entered multi-line editing mode.

Fixed error strings to include more complete descriptions when bad regular expressions are entered.

Removed the old IOHandlerLinesUpdated function as it is no longer needed (inheriting from IOHandlerDelegateMultiline takes care of what this function used to do).

llvm-svn: 222207
---
 .../source/Commands/CommandObjectCommands.cpp | 74 ++++---------------
 1 file changed, 16 insertions(+), 58 deletions(-)

diff --git a/lldb/source/Commands/CommandObjectCommands.cpp b/lldb/source/Commands/CommandObjectCommands.cpp
index 22cfc653edfa..a1a63cfd898a 100644
--- a/lldb/source/Commands/CommandObjectCommands.cpp
+++ b/lldb/source/Commands/CommandObjectCommands.cpp
@@ -873,7 +873,7 @@ protected:
 
 class CommandObjectCommandsAddRegex :
     public CommandObjectParsed,
-    public IOHandlerDelegate
+    public IOHandlerDelegateMultiline
 {
 public:
     CommandObjectCommandsAddRegex (CommandInterpreter &interpreter) :
@@ -881,7 +881,7 @@ public:
                        "command regex",
                        "Allow the user to create a regular expression command.",
                        "command regex <cmd-name> [s/<regex>/<subst>/ ...]"),
-        IOHandlerDelegate(IOHandlerDelegate::Completion::LLDBCommand),
+        IOHandlerDelegateMultiline ("", IOHandlerDelegate::Completion::LLDBCommand),
         m_options (interpreter)
     {
         SetHelpLong(
@@ -918,8 +918,8 @@ public:
     
 protected:
     
-    virtual void
-    IOHandlerActivated (IOHandler &io_handler)
+    void
+    IOHandlerActivated (IOHandler &io_handler) override
     {
         StreamFileSP output_sp(io_handler.GetOutputStreamFile());
         if (output_sp)
@@ -929,8 +929,8 @@ protected:
         }
     }
 
-    virtual void
-    IOHandlerInputComplete (IOHandler &io_handler, std::string &data)
+    void
+    IOHandlerInputComplete (IOHandler &io_handler, std::string &data) override
     {
         io_handler.SetIsDone(true);
         if (m_regex_cmd_ap.get())
@@ -942,7 +942,6 @@ protected:
                 bool check_only = false;
                 for (size_t i=0; i<num_lines; ++i)
                 {
-                    printf ("regex[%zu] = %s\n", i, lines[i].c_str());
                     llvm::StringRef bytes_strref (lines[i]);
                     Error error = AppendRegexSubstitution (bytes_strref, check_only);
                     if (error.Fail())
@@ -962,51 +961,6 @@ protected:
             }
         }
     }
-    
-    virtual LineStatus
-    IOHandlerLinesUpdated (IOHandler &io_handler,
-                           StringList &lines,
-                           uint32_t line_idx,
-                           Error &error)
-    {
-        if (line_idx == UINT32_MAX)
-        {
-            // Return true to indicate we are done getting lines (this
-            // is a "fake" line - the real terminating blank line was
-            // removed during a previous call with the code below)
-            error.Clear();
-            return LineStatus::Done;
-        }
-        else
-        {
-            const size_t num_lines = lines.GetSize();
-            if (line_idx + 1 == num_lines)
-            {
-                // The last line was edited, if this line is empty, then we are done
-                // getting our multiple lines.
-                if (lines[line_idx].empty())
-                {
-                    // Remove the last empty line from "lines" so it doesn't appear
-                    // in our final expression and return true to indicate we are done
-                    // getting lines
-                    lines.PopBack();
-                    return LineStatus::Done;
-                }
-            }
-            // Check the current line to make sure it is formatted correctly
-            bool check_only = true;
-            llvm::StringRef regex_sed(lines[line_idx]);
-            error = AppendRegexSubstitution (regex_sed, check_only);
-            if (error.Fail())
-            {
-                return LineStatus::Error;
-            }
-            else
-            {
-                return LineStatus::Success;
-            }
-        }
-    }
 
     bool
     DoExecute (Args& command, CommandReturnObject &result)
@@ -1035,7 +989,7 @@ protected:
                 IOHandlerSP io_handler_sp (new IOHandlerEditline (debugger,
                                                                   IOHandler::Type::Other,
                                                                   "lldb-regex", // Name of input reader for history
-                                                                  "\033[K> ",   // Prompt and clear line
+                                                                  "> ",         // Prompt
                                                                   NULL,         // Continuation prompt
                                                                   multiple_lines,
                                                                   color_prompt,
@@ -1112,21 +1066,25 @@ protected:
         
         if (second_separator_char_pos == std::string::npos)
         {
-            error.SetErrorStringWithFormat("missing second '%c' separator char after '%.*s'", 
+            error.SetErrorStringWithFormat("missing second '%c' separator char after '%.*s' in '%.*s'",
                                            separator_char, 
                                            (int)(regex_sed.size() - first_separator_char_pos - 1),
-                                           regex_sed.data() + (first_separator_char_pos + 1));
-            return error;            
+                                           regex_sed.data() + (first_separator_char_pos + 1),
+                                           (int)regex_sed.size(),
+                                           regex_sed.data());
+            return error;
         }
 
         const size_t third_separator_char_pos = regex_sed.find (separator_char, second_separator_char_pos + 1);
         
         if (third_separator_char_pos == std::string::npos)
         {
-            error.SetErrorStringWithFormat("missing third '%c' separator char after '%.*s'", 
+            error.SetErrorStringWithFormat("missing third '%c' separator char after '%.*s' in '%.*s'",
                                            separator_char, 
                                            (int)(regex_sed.size() - second_separator_char_pos - 1),
-                                           regex_sed.data() + (second_separator_char_pos + 1));
+                                           regex_sed.data() + (second_separator_char_pos + 1),
+                                           (int)regex_sed.size(),
+                                           regex_sed.data());
             return error;            
         }