[LLDB] Format lldb-server's target XML

So that the XML isn't one giant line. Which wasn't
a problem for lldb but was for me trying to troubleshoot
it using the logs.

It now looks like:
```
<?xml version="1.0"?>
<target version="1.0">
  <architecture>aarch64</architecture>
  <feature>
    <...>
    <reg name="fpcr" .../>
  </feature>
</target>
```

Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D134035

1 files changed, 19 insertions, 8 deletions

diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp
index 072151e..4ea8472 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp
@@ -3066,19 +3066,24 @@ GDBRemoteCommunicationServerLLGS::BuildTargetXml() {
 
   StreamString response;
 
-  response.Printf("<?xml version=\"1.0\"?>");
-  response.Printf("<target version=\"1.0\">");
+  response.Printf("<?xml version=\"1.0\"?>\n");
+  response.Printf("<target version=\"1.0\">\n");
+  response.IndentMore();
 
-  response.Printf("<architecture>%s</architecture>",
+  response.Indent();
+  response.Printf("<architecture>%s</architecture>\n",
                   m_current_process->GetArchitecture()
                       .GetTriple()
                       .getArchName()
                       .str()
                       .c_str());
 
-  response.Printf("<feature>");
+  response.Indent("<feature>\n");
 
   const int registers_count = reg_context.GetUserRegisterCount();
+  if (registers_count)
+    response.IndentMore();
+
   for (int reg_index = 0; reg_index < registers_count; reg_index++) {
     const RegisterInfo *reg_info =
         reg_context.GetRegisterInfoAtIndex(reg_index);
@@ -3090,7 +3095,9 @@ GDBRemoteCommunicationServerLLGS::BuildTargetXml() {
       continue;
     }
 
-    response.Printf("<reg name=\"%s\" bitsize=\"%" PRIu32 "\" regnum=\"%d\" ",
+    response.Indent();
+    response.Printf("<reg name=\"%s\" bitsize=\"%" PRIu32
+                    "\" regnum=\"%d\" ",
                     reg_info->name, reg_info->byte_size * 8, reg_index);
 
     if (!reg_context.RegisterOffsetIsDynamic())
@@ -3139,11 +3146,15 @@ GDBRemoteCommunicationServerLLGS::BuildTargetXml() {
       response.Printf("\" ");
     }
 
-    response.Printf("/>");
+    response.Printf("/>\n");
   }
 
-  response.Printf("</feature>");
-  response.Printf("</target>");
+  if (registers_count)
+    response.IndentLess();
+
+  response.Indent("</feature>\n");
+  response.IndentLess();
+  response.Indent("</target>\n");
   return MemoryBuffer::getMemBufferCopy(response.GetString(), "target.xml");
 }