Splitting fpdfdoc/doc_* part II.

core/fpdfdoc/cpdf_filespec.cpp

+// 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/fpdfdoc/include/cpdf_filespec.h"
+
+#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_object.h"
+#include "core/fpdfapi/fpdf_parser/include/fpdf_parser_decode.h"
+#include "core/fxcrt/include/fx_system.h"
+
+namespace {
+
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ || \
+    _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+CFX_WideString ChangeSlashToPlatform(const FX_WCHAR* str) {
+  CFX_WideString result;
+  while (*str) {
+    if (*str == '/') {
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
+      result += ':';
+#else
+      result += '\\';
+#endif
+    } else {
+      result += *str;
+    }
+    str++;
+  }
+  return result;
+}
+
+CFX_WideString ChangeSlashToPDF(const FX_WCHAR* str) {
+  CFX_WideString result;
+  while (*str) {
+    if (*str == '\\' || *str == ':')
+      result += '/';
+    else
+      result += *str;
+
+    str++;
+  }
+  return result;
+}
+#endif  // _FXM_PLATFORM_APPLE_ || _FXM_PLATFORM_WINDOWS_
+
+}  // namespace
+
+CFX_WideString CPDF_FileSpec::DecodeFileName(const CFX_WideStringC& filepath) {
+  if (filepath.GetLength() <= 1)
+    return CFX_WideString();
+
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
+  if (filepath.Left(sizeof("/Mac") - 1) == CFX_WideStringC(L"/Mac"))
+    return ChangeSlashToPlatform(filepath.c_str() + 1);
+  return ChangeSlashToPlatform(filepath.c_str());
+#elif _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+
+  if (filepath.GetAt(0) != '/')
+    return ChangeSlashToPlatform(filepath.c_str());
+  if (filepath.GetAt(1) == '/')
+    return ChangeSlashToPlatform(filepath.c_str() + 1);
+  if (filepath.GetAt(2) == '/') {
+    CFX_WideString result;
+    result += filepath.GetAt(1);
+    result += ':';
+    result += ChangeSlashToPlatform(filepath.c_str() + 2);
+    return result;
+  }
+  CFX_WideString result;
+  result += '\\';
+  result += ChangeSlashToPlatform(filepath.c_str());
+  return result;
+#else
+  return CFX_WideString(filepath);
+#endif
+}
+
+bool CPDF_FileSpec::GetFileName(CFX_WideString* csFileName) const {
+  if (CPDF_Dictionary* pDict = m_pObj->AsDictionary()) {
+    *csFileName = pDict->GetUnicodeTextBy("UF");
+    if (csFileName->IsEmpty()) {
+      *csFileName =
+          CFX_WideString::FromLocal(pDict->GetStringBy("F").AsStringC());
+    }
+    if (pDict->GetStringBy("FS") == "URL")
+      return true;
+    if (csFileName->IsEmpty()) {
+      if (pDict->KeyExist("DOS")) {
+        *csFileName =
+            CFX_WideString::FromLocal(pDict->GetStringBy("DOS").AsStringC());
+      } else if (pDict->KeyExist("Mac")) {
+        *csFileName =
+            CFX_WideString::FromLocal(pDict->GetStringBy("Mac").AsStringC());
+      } else if (pDict->KeyExist("Unix")) {
+        *csFileName =
+            CFX_WideString::FromLocal(pDict->GetStringBy("Unix").AsStringC());
+      } else {
+        return false;
+      }
+    }
+  } else if (m_pObj->IsString()) {
+    *csFileName = CFX_WideString::FromLocal(m_pObj->GetString().AsStringC());
+  } else {
+    return false;
+  }
+  *csFileName = DecodeFileName(csFileName->AsStringC());
+  return true;
+}
+
+CPDF_FileSpec::CPDF_FileSpec() {
+  m_pObj = new CPDF_Dictionary;
+  m_pObj->AsDictionary()->SetAtName("Type", "Filespec");
+}
+
+CFX_WideString CPDF_FileSpec::EncodeFileName(const CFX_WideStringC& filepath) {
+  if (filepath.GetLength() <= 1)
+    return CFX_WideString();
+
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+  if (filepath.GetAt(1) == ':') {
+    CFX_WideString result;
+    result = '/';
+    result += filepath.GetAt(0);
+    if (filepath.GetAt(2) != '\\')
+      result += '/';
+
+    result += ChangeSlashToPDF(filepath.c_str() + 2);
+    return result;
+  }
+  if (filepath.GetAt(0) == '\\' && filepath.GetAt(1) == '\\')
+    return ChangeSlashToPDF(filepath.c_str() + 1);
+
+  if (filepath.GetAt(0) == '\\') {
+    CFX_WideString result;
+    result = '/';
+    result += ChangeSlashToPDF(filepath.c_str());
+    return result;
+  }
+  return ChangeSlashToPDF(filepath.c_str());
+#elif _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
+  if (filepath.Left(sizeof("Mac") - 1) == FX_WSTRC(L"Mac")) {
+    CFX_WideString result;
+    result = '/';
+    result += ChangeSlashToPDF(filepath.c_str());
+    return result;
+  }
+  return ChangeSlashToPDF(filepath.c_str());
+#else
+  return CFX_WideString(filepath);
+#endif
+}
+
+void CPDF_FileSpec::SetFileName(const CFX_WideStringC& wsFileName) {
+  if (!m_pObj)
+    return;
+
+  CFX_WideString wsStr = EncodeFileName(wsFileName);
+  if (m_pObj->IsString()) {
+    m_pObj->SetString(CFX_ByteString::FromUnicode(wsStr));
+  } else if (CPDF_Dictionary* pDict = m_pObj->AsDictionary()) {
+    pDict->SetAtString("F", CFX_ByteString::FromUnicode(wsStr));
+    pDict->SetAtString("UF", PDF_EncodeText(wsStr));
+  }
+}