Move CSS code to core

The xfa/fde/css code has no other links into xfa/. This CL moves the css
code to core/fxcrt/css and sets to only build when pdf_enable_xfa is
enabled.

Change-Id: Iefd208e1f83a28b80b567c574e841e87bce310be
Reviewed-on: https://pdfium-review.googlesource.com/9251
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>

1 files changed, 0 insertions, 87 deletions

diff --git a/xfa/fde/css/cfde_cssselector.cpp b/xfa/fde/css/cfde_cssselector.cpp
deleted file mode 100644
index ad2ec40c2b..0000000000
--- a/xfa/fde/css/cfde_cssselector.cpp
+++ /dev/null
@@ -1,87 +0,0 @@
-// 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_cssselector.h"
-
-#include <utility>
-
-#include "core/fxcrt/fx_extension.h"
-#include "third_party/base/ptr_util.h"
-
-namespace {
-
-int32_t GetCSSNameLen(const wchar_t* psz, const wchar_t* pEnd) {
-  const wchar_t* pStart = psz;
-  while (psz < pEnd) {
-    wchar_t wch = *psz;
-    if (!FXSYS_iswalnum(wch) && wch != '_' && wch != '-')
-      break;
-    ++psz;
-  }
-  return psz - pStart;
-}
-
-}  // namespace
-
-CFDE_CSSSelector::CFDE_CSSSelector(FDE_CSSSelectorType eType,
-                                   const wchar_t* psz,
-                                   int32_t iLen,
-                                   bool bIgnoreCase)
-    : m_eType(eType),
-      m_dwHash(FX_HashCode_GetW(CFX_WideStringC(psz, iLen), bIgnoreCase)) {}
-
-CFDE_CSSSelector::~CFDE_CSSSelector() {}
-
-FDE_CSSSelectorType CFDE_CSSSelector::GetType() const {
-  return m_eType;
-}
-
-uint32_t CFDE_CSSSelector::GetNameHash() const {
-  return m_dwHash;
-}
-
-CFDE_CSSSelector* CFDE_CSSSelector::GetNextSelector() const {
-  return m_pNext.get();
-}
-
-// static.
-std::unique_ptr<CFDE_CSSSelector> CFDE_CSSSelector::FromString(
-    const CFX_WideStringC& str) {
-  ASSERT(!str.IsEmpty());
-
-  const wchar_t* psz = str.unterminated_c_str();
-  const wchar_t* pStart = psz;
-  const wchar_t* pEnd = psz + str.GetLength();
-  for (; psz < pEnd; ++psz) {
-    switch (*psz) {
-      case '>':
-      case '[':
-      case '+':
-        return nullptr;
-    }
-  }
-
-  std::unique_ptr<CFDE_CSSSelector> pFirst = nullptr;
-  for (psz = pStart; psz < pEnd;) {
-    wchar_t wch = *psz;
-    if (FXSYS_iswalpha(wch) || wch == '*') {
-      int32_t iNameLen = wch == '*' ? 1 : GetCSSNameLen(psz, pEnd);
-      auto p = pdfium::MakeUnique<CFDE_CSSSelector>(
-          FDE_CSSSelectorType::Element, psz, iNameLen, true);
-      if (pFirst) {
-        pFirst->SetType(FDE_CSSSelectorType::Descendant);
-        p->SetNext(std::move(pFirst));
-      }
-      pFirst = std::move(p);
-      psz += iNameLen;
-    } else if (wch == ' ') {
-      psz++;
-    } else {
-      return nullptr;
-    }
-  }
-  return pFirst;
-}