From 6016911ce5d3226e538776620af31cde736c816f Mon Sep 17 00:00:00 2001
From: Manuel Klimek <klimek@google.com>
Date: Tue, 3 Dec 2013 09:46:06 +0000
Subject: [PATCH] Preserve carriage return when using clang-format's XML
 interface.

Patch by James Park.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@196265 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/clang-format/ClangFormat.cpp | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/tools/clang-format/ClangFormat.cpp b/tools/clang-format/ClangFormat.cpp
index 513439649d..d8c0b51ee1 100644
--- a/tools/clang-format/ClangFormat.cpp
+++ b/tools/clang-format/ClangFormat.cpp
@@ -179,6 +179,26 @@ static bool fillRanges(SourceManager &Sources, FileID ID,
   return false;
 }
 
+static void outputReplacementXML(StringRef Text) {
+  size_t From = 0;
+  size_t Index;
+  while ((Index = Text.find_first_of("\n\r", From)) != StringRef::npos) {
+    llvm::outs() << Text.substr(From, Index - From);
+    switch (Text[Index]) {
+    case '\n':
+      llvm::outs() << "&#10;";
+      break;
+    case '\r':
+      llvm::outs() << "&#13;";
+      break;
+    default:
+      llvm_unreachable("Unexpected character encountered!");
+    }
+    From = Index + 1;
+  }
+  llvm::outs() << Text.substr(From);
+}
+
 // Returns true on error.
 static bool format(StringRef FileName) {
   FileManager Files((FileSystemOptions()));
@@ -211,8 +231,9 @@ static bool format(StringRef FileName) {
          I != E; ++I) {
       llvm::outs() << "<replacement "
                    << "offset='" << I->getOffset() << "' "
-                   << "length='" << I->getLength() << "'>"
-                   << I->getReplacementText() << "</replacement>\n";
+                   << "length='" << I->getLength() << "'>";
+      outputReplacementXML(I->getReplacementText());
+      llvm::outs() << "</replacement>\n";
     }
     llvm::outs() << "</replacements>\n";
   } else {
-- 
2.50.1