[lldb] Add a setting to change the progress color

Add a setting to change how progress is shown in a color enabled
terminal. This follows the existing -prefix, -suffix pattern
that's used elsewhere in lldb.

Differential revision: https://reviews.llvm.org/D121062

Author: JDevlieghere

lldb/include/lldb/Core/Debugger.h

@@ -331,6 +331,10 @@ class Debugger : public std::enable_shared_from_this<Debugger>,
 
   bool GetShowProgress() const;
 
+  llvm::StringRef GetShowProgressAnsiPrefix() const;
+
+  llvm::StringRef GetShowProgressAnsiSuffix() const;
+
   bool GetUseAutosuggestion() const;
 
   llvm::StringRef GetAutosuggestionAnsiPrefix() const;

lldb/source/Core/CoreProperties.td

@@ -135,6 +135,14 @@ let Definition = "debugger" in {
     Global,
     DefaultTrue,
     Desc<"Whether to show progress or not if the debugger's output is an interactive color-enabled terminal.">;
+  def ShowProgressAnsiPrefix: Property<"show-progress-ansi-prefix", "String">,
+    Global,
+    DefaultStringValue<"${ansi.faint}">,
+    Desc<"When displaying progress in a color-enabled terminal, use the ANSI terminal code specified in this format immediately before the progress message.">;
+  def ShowProgressAnsiSuffix: Property<"show-progress-ansi-suffix", "String">,
+    Global,
+    DefaultStringValue<"${ansi.normal}">,
+    Desc<"When displaying progress in a color-enabled terminal, use the ANSI terminal code specified in this format immediately after the progress message.">;
   def UseSourceCache: Property<"use-source-cache", "Boolean">,
     Global,
     DefaultTrue,

lldb/source/Core/Debugger.cpp

@@ -384,6 +384,16 @@ bool Debugger::GetShowProgress() const {
       nullptr, idx, g_debugger_properties[idx].default_uint_value != 0);
 }
 
+llvm::StringRef Debugger::GetShowProgressAnsiPrefix() const {
+  const uint32_t idx = ePropertyShowProgressAnsiPrefix;
+  return m_collection_sp->GetPropertyAtIndexAsString(nullptr, idx, "");
+}
+
+llvm::StringRef Debugger::GetShowProgressAnsiSuffix() const {
+  const uint32_t idx = ePropertyShowProgressAnsiSuffix;
+  return m_collection_sp->GetPropertyAtIndexAsString(nullptr, idx, "");
+}
+
 bool Debugger::GetUseAutosuggestion() const {
   const uint32_t idx = ePropertyShowAutosuggestion;
   return m_collection_sp->GetPropertyAtIndexAsBoolean(
@@ -1779,6 +1789,12 @@ void Debugger::HandleProgressEvent(const lldb::EventSP &event_sp) {
     return;
   }
 
+  const bool use_color = GetUseColor();
+  llvm::StringRef ansi_prefix = GetShowProgressAnsiPrefix();
+  if (!ansi_prefix.empty())
+    output.Printf(
+        "%s", ansi::FormatAnsiTerminalCodes(ansi_prefix, use_color).c_str());
+
   // Print over previous line, if any.
   output.Printf("\r");
 
@@ -1791,6 +1807,11 @@ void Debugger::HandleProgressEvent(const lldb::EventSP &event_sp) {
     output.Printf("%s...", message.c_str());
   }
 
+  llvm::StringRef ansi_suffix = GetShowProgressAnsiSuffix();
+  if (!ansi_suffix.empty())
+    output.Printf(
+        "%s", ansi::FormatAnsiTerminalCodes(ansi_suffix, use_color).c_str());
+
   // Clear until the end of the line.
   output.Printf("\x1B[K");