Use proper file names in core/fpdfapi/font

This CL splits up font_int.h into files by classes. It also renames the
unittests to match the class being tested. Finally, it renames the ttgsubtable
files to match the class name.

Change-Id: I6187caa9e82d12b9a66e955113fe327d52042ae0
Reviewed-on: https://pdfium-review.googlesource.com/6090
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Nicolás Peña <npm@chromium.org>

1 files changed, 87 insertions, 0 deletions

diff --git a/core/fpdfapi/font/cpdf_cmap.h b/core/fpdfapi/font/cpdf_cmap.h
new file mode 100644
index 0000000000..ab495efbfc
--- /dev/null
+++ b/core/fpdfapi/font/cpdf_cmap.h
@@ -0,0 +1,87 @@
+// 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
+
+#ifndef CORE_FPDFAPI_FONT_CPDF_CMAP_H_
+#define CORE_FPDFAPI_FONT_CPDF_CMAP_H_
+
+#include <vector>
+
+#include "core/fpdfapi/font/cpdf_cidfont.h"
+#include "core/fxcrt/cfx_retain_ptr.h"
+#include "core/fxcrt/fx_basic.h"
+
+class CPDF_CMapManager;
+struct FXCMAP_CMap;
+
+enum CIDCoding : uint8_t {
+  CIDCODING_UNKNOWN = 0,
+  CIDCODING_GB,
+  CIDCODING_BIG5,
+  CIDCODING_JIS,
+  CIDCODING_KOREA,
+  CIDCODING_UCS2,
+  CIDCODING_CID,
+  CIDCODING_UTF16,
+};
+
+class CPDF_CMap : public CFX_Retainable {
+ public:
+  enum CodingScheme : uint8_t {
+    OneByte,
+    TwoBytes,
+    MixedTwoBytes,
+    MixedFourBytes
+  };
+
+  struct CodeRange {
+    int m_CharSize;
+    uint8_t m_Lower[4];
+    uint8_t m_Upper[4];
+  };
+
+  struct CIDRange {
+    uint32_t m_StartCode;
+    uint32_t m_EndCode;
+    uint16_t m_StartCID;
+  };
+
+  template <typename T, typename... Args>
+  friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args);
+
+  void LoadPredefined(CPDF_CMapManager* pMgr,
+                      const CFX_ByteString& name,
+                      bool bPromptCJK);
+  void LoadEmbedded(const uint8_t* pData, uint32_t dwSize);
+
+  bool IsLoaded() const { return m_bLoaded; }
+  bool IsVertWriting() const { return m_bVertical; }
+  uint16_t CIDFromCharCode(uint32_t charcode) const;
+  int GetCharSize(uint32_t charcode) const;
+  uint32_t GetNextChar(const char* pString, int nStrLen, int& offset) const;
+  int CountChar(const char* pString, int size) const;
+  int AppendChar(char* str, uint32_t charcode) const;
+
+ private:
+  friend class CPDF_CMapParser;
+  friend class CPDF_CIDFont;
+
+  CPDF_CMap();
+  ~CPDF_CMap() override;
+
+  CFX_ByteString m_PredefinedCMap;
+  bool m_bLoaded;
+  bool m_bVertical;
+  CIDSet m_Charset;
+  CodingScheme m_CodingScheme;
+  int m_Coding;
+  std::vector<bool> m_MixedTwoByteLeadingBytes;
+  std::vector<CodeRange> m_MixedFourByteLeadingRanges;
+  std::vector<uint16_t> m_DirectCharcodeToCIDTable;
+  std::vector<CIDRange> m_AdditionalCharcodeToCIDMappings;
+  const FXCMAP_CMap* m_pEmbedMap;
+};
+
+#endif  // CORE_FPDFAPI_FONT_CPDF_CMAP_H_