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authorDan Sinclair <dsinclair@chromium.org>2017-01-19 10:27:58 -0500
committerChromium commit bot <commit-bot@chromium.org>2017-01-19 15:49:07 +0000
commit95bec8046a28928df627ce4d48eee8b209b3e36e (patch)
tree46913cf24aacfc88a89bb55edcce8e3a2e724c4b /xfa/fde/css/cfde_csstextbuf.cpp
parentdd533baad22f5143c093b98e98463a0dc62899ea (diff)
downloadpdfium-95bec8046a28928df627ce4d48eee8b209b3e36e.tar.xz
Split fde/css files into individual class files.
This CL splits the files in xfa/fde/css into class per file and renames any needed files to match the class names. Update some of the classes to use std::stack. Change-Id: I4eca0fb3556d949a15a873bb0f0fd732f47e4fb1 Reviewed-on: https://pdfium-review.googlesource.com/2253 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
Diffstat (limited to 'xfa/fde/css/cfde_csstextbuf.cpp')
-rw-r--r--xfa/fde/css/cfde_csstextbuf.cpp86
1 files changed, 86 insertions, 0 deletions
diff --git a/xfa/fde/css/cfde_csstextbuf.cpp b/xfa/fde/css/cfde_csstextbuf.cpp
new file mode 100644
index 0000000000..83b2899f19
--- /dev/null
+++ b/xfa/fde/css/cfde_csstextbuf.cpp
@@ -0,0 +1,86 @@
+// Copyright 2017 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 "xfa/fde/css/cfde_csstextbuf.h"
+
+#include <algorithm>
+
+CFDE_CSSTextBuf::CFDE_CSSTextBuf()
+ : m_bExtBuf(false),
+ m_pBuffer(nullptr),
+ m_iBufLen(0),
+ m_iDatLen(0),
+ m_iDatPos(0) {}
+
+CFDE_CSSTextBuf::~CFDE_CSSTextBuf() {
+ Reset();
+}
+
+void CFDE_CSSTextBuf::Reset() {
+ if (!m_bExtBuf) {
+ FX_Free(m_pBuffer);
+ m_pBuffer = nullptr;
+ }
+ m_iDatPos = m_iDatLen = m_iBufLen;
+}
+
+bool CFDE_CSSTextBuf::AttachBuffer(const FX_WCHAR* pBuffer, int32_t iBufLen) {
+ Reset();
+ m_pBuffer = const_cast<FX_WCHAR*>(pBuffer);
+ m_iDatLen = m_iBufLen = iBufLen;
+ return m_bExtBuf = true;
+}
+
+bool CFDE_CSSTextBuf::EstimateSize(int32_t iAllocSize) {
+ ASSERT(iAllocSize > 0);
+ Clear();
+ m_bExtBuf = false;
+ return ExpandBuf(iAllocSize);
+}
+
+int32_t CFDE_CSSTextBuf::LoadFromStream(
+ const CFX_RetainPtr<IFGAS_Stream>& pTxtStream,
+ int32_t iStreamOffset,
+ int32_t iMaxChars,
+ bool& bEOS) {
+ ASSERT(iStreamOffset >= 0 && iMaxChars > 0);
+ Clear();
+ m_bExtBuf = false;
+ if (!ExpandBuf(iMaxChars))
+ return 0;
+
+ if (pTxtStream->GetPosition() != iStreamOffset)
+ pTxtStream->Seek(FX_STREAMSEEK_Begin, iStreamOffset);
+
+ m_iDatLen = pTxtStream->ReadString(m_pBuffer, iMaxChars, bEOS);
+ return m_iDatLen;
+}
+
+bool CFDE_CSSTextBuf::ExpandBuf(int32_t iDesiredSize) {
+ if (m_bExtBuf)
+ return false;
+ if (!m_pBuffer)
+ m_pBuffer = FX_Alloc(FX_WCHAR, iDesiredSize);
+ else if (m_iBufLen != iDesiredSize)
+ m_pBuffer = FX_Realloc(FX_WCHAR, m_pBuffer, iDesiredSize);
+ else
+ return true;
+
+ if (!m_pBuffer) {
+ m_iBufLen = 0;
+ return false;
+ }
+ m_iBufLen = iDesiredSize;
+ return true;
+}
+
+void CFDE_CSSTextBuf::Subtract(int32_t iStart, int32_t iLength) {
+ ASSERT(iStart >= 0 && iLength >= 0);
+
+ iLength = std::max(std::min(iLength, m_iDatLen - iStart), 0);
+ FXSYS_memmove(m_pBuffer, m_pBuffer + iStart, iLength * sizeof(FX_WCHAR));
+ m_iDatLen = iLength;
+}