core/src/fxcodec/jbig2/JBig2_SymbolDict.cpp

// Copyright 2014 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 "JBig2_SymbolDict.h"
CJBig2_SymbolDict::CJBig2_SymbolDict() {
  SDNUMEXSYMS = 0;
  SDEXSYMS = NULL;
  m_bContextRetained = FALSE;
  m_gbContext = m_grContext = NULL;
}

CJBig2_SymbolDict* CJBig2_SymbolDict::DeepCopy() {
  CJBig2_SymbolDict* dst = NULL;
  CJBig2_SymbolDict* src = this;
  if (src->m_bContextRetained || src->m_gbContext || src->m_grContext) {
    return NULL;
  }
  JBIG2_ALLOC(dst, CJBig2_SymbolDict());
  dst->SDNUMEXSYMS = src->SDNUMEXSYMS;
  dst->SDEXSYMS = (CJBig2_Image**)m_pModule->JBig2_Malloc2(
      sizeof(CJBig2_Image*), src->SDNUMEXSYMS);
  for (FX_DWORD i = 0; i < src->SDNUMEXSYMS; i++) {
    if (src->SDEXSYMS[i]) {
      JBIG2_ALLOC(dst->SDEXSYMS[i], CJBig2_Image(*(src->SDEXSYMS[i])));
    } else {
      dst->SDEXSYMS[i] = NULL;
    }
  }
  return dst;
}

CJBig2_SymbolDict::~CJBig2_SymbolDict() {
  if (SDEXSYMS) {
    for (FX_DWORD i = 0; i < SDNUMEXSYMS; i++) {
      delete SDEXSYMS[i];
    }
    m_pModule->JBig2_Free(SDEXSYMS);
  }
  if (m_bContextRetained) {
    if (m_gbContext) {
      m_pModule->JBig2_Free(m_gbContext);
    }
    if (m_grContext) {
      m_pModule->JBig2_Free(m_grContext);
    }
  }
}