From 0ba3c6da16d4e90f0ad1fc9f326bf863860c0470 Mon Sep 17 00:00:00 2001
From: Henrique Nakashima <hnakashima@chromium.org>
Date: Wed, 5 Jul 2017 16:21:17 -0400
Subject: Converting CFX_ByteTextBuf to ostringstream in fpdfedittext.cpp.
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Bug: pdfium:731
Change-Id: I8005ca2c2d4a65ad2197ba6f71ee37f1c1e5b5d8
Reviewed-on: https://pdfium-review.googlesource.com/6833
Reviewed-by: Nicolás Peña <npm@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
---
 fpdfsdk/fpdfedittext.cpp | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/fpdfsdk/fpdfedittext.cpp b/fpdfsdk/fpdfedittext.cpp
index 1c3b22d7f3..f15f9e4e6a 100644
--- a/fpdfsdk/fpdfedittext.cpp
+++ b/fpdfsdk/fpdfedittext.cpp
@@ -98,24 +98,24 @@ const char ToUnicodeEnd[] =
     "end\n"
     "end\n";
 
-void AddCharcode(CFX_ByteTextBuf* pBuffer, uint32_t number) {
+void AddCharcode(std::ostringstream* pBuffer, uint32_t number) {
   ASSERT(number <= 0xFFFF);
   *pBuffer << "<";
   char ans[4];
   FXSYS_IntToFourHexChars(number, ans);
   for (size_t i = 0; i < 4; ++i)
-    pBuffer->AppendChar(ans[i]);
+    *pBuffer << ans[i];
   *pBuffer << ">";
 }
 
 // PDF spec 1.7 Section 5.9.2: "Unicode character sequences as expressed in
 // UTF-16BE encoding." See https://en.wikipedia.org/wiki/UTF-16#Description
-void AddUnicode(CFX_ByteTextBuf* pBuffer, uint32_t unicode) {
+void AddUnicode(std::ostringstream* pBuffer, uint32_t unicode) {
   char ans[8];
   *pBuffer << "<";
   size_t numChars = FXSYS_ToUTF16BE(unicode, ans);
   for (size_t i = 0; i < numChars; ++i)
-    pBuffer->AppendChar(ans[i]);
+    *pBuffer << ans[i];
   *pBuffer << ">";
 }
 
@@ -184,7 +184,7 @@ CPDF_Stream* LoadUnicode(CPDF_Document* pDoc,
     }
     map_range[std::make_pair(firstCharcode, curCharcode)] = firstUnicode;
   }
-  CFX_ByteTextBuf buffer;
+  std::ostringstream buffer;
   buffer << ToUnicodeStart;
   // Add maps to buffer
   buffer << static_cast<uint32_t>(char_to_uni.size()) << " beginbfchar\n";
@@ -224,11 +224,9 @@ CPDF_Stream* LoadUnicode(CPDF_Document* pDoc,
   buffer << "endbfrange\n";
   buffer << ToUnicodeEnd;
   // TODO(npm): Encrypt / Compress?
-  uint32_t bufferSize = buffer.GetSize();
-  auto pDict = pdfium::MakeUnique<CPDF_Dictionary>();
-  pDict->SetNewFor<CPDF_Number>("Length", static_cast<int>(bufferSize));
-  return pDoc->NewIndirect<CPDF_Stream>(buffer.DetachBuffer(), bufferSize,
-                                        std::move(pDict));
+  CPDF_Stream* stream = pDoc->NewIndirect<CPDF_Stream>();
+  stream->SetData(&buffer);
+  return stream;
 }
 
 const uint32_t kMaxSimpleFontChar = 0xFF;
-- 
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