Revert postscript code removal.

Revert CL http://crrev.com/2608663003 in preparation for adding
postscript generation to Pdfium.

Note postscript generation code will not be called until additional
patches land. These patches will also include modifications needed to
make this code functional (currently missing a few compression functions).

BUG=

Review-Url: https://codereview.chromium.org/2615703002

1 files changed, 40 insertions, 0 deletions

diff --git a/core/fxge/win32/cpsoutput.cpp b/core/fxge/win32/cpsoutput.cpp
new file mode 100644
index 0000000000..76b37d7dac
--- /dev/null
+++ b/core/fxge/win32/cpsoutput.cpp
@@ -0,0 +1,40 @@
+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "core/fxge/win32/cpsoutput.h"
+
+#include <algorithm>
+
+#include "core/fxcrt/fx_system.h"
+
+CPSOutput::CPSOutput(HDC hDC) {
+  m_hDC = hDC;
+}
+
+CPSOutput::~CPSOutput() {}
+
+void CPSOutput::Release() {
+  delete this;
+}
+
+void CPSOutput::OutputPS(const FX_CHAR* str, int len) {
+  if (len < 0)
+    len = static_cast<int>(FXSYS_strlen(str));
+
+  int sent_len = 0;
+  while (len > 0) {
+    FX_CHAR buffer[1026];
+    int send_len = std::min(len, 1024);
+    *(reinterpret_cast<uint16_t*>(buffer)) = send_len;
+    FXSYS_memcpy(buffer + 2, str + sent_len, send_len);
+
+    // TODO(thestig/rbpotter): Do PASSTHROUGH for non-Chromium usage.
+    // ExtEscape(m_hDC, PASSTHROUGH, send_len + 2, buffer, 0, nullptr);
+    ::GdiComment(m_hDC, send_len + 2, reinterpret_cast<const BYTE*>(buffer));
+    sent_len += send_len;
+    len -= send_len;
+  }
+}