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// 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 "../../../include/fpdfapi/fpdf_module.h"
#include "../../../include/fpdfapi/fpdf_resource.h"
#include "../../../include/fxcodec/fx_codec.h"
#include "font_int.h"
typedef struct {
FXSYS_FILE* m_pFile;
int m_nFiles;
int m_IndexSize;
int m_IndexOffset;
} FXFC_PACKAGE;
FX_LPVOID FXFC_LoadPackage(FX_LPCSTR name)
{
FXSYS_FILE* file = FXSYS_fopen(name, (FX_LPCSTR)"rb");
if (file == NULL) {
return NULL;
}
FX_BYTE buf[256];
FXSYS_fread(buf, 1, 20, file);
if (*(FX_DWORD*)buf != 0x43465846) {
FXSYS_fclose(file);
return NULL;
}
FXFC_PACKAGE* pPackage = FX_Alloc(FXFC_PACKAGE, 1);
pPackage->m_pFile = file;
pPackage->m_nFiles = *(int*)(buf + 8);
pPackage->m_IndexSize = *(int*)(buf + 12);
pPackage->m_IndexOffset = *(int*)(buf + 16);
return pPackage;
}
void FXFC_ClosePackage(FX_LPVOID p)
{
FXFC_PACKAGE* pPackage = (FXFC_PACKAGE*)p;
FXSYS_fclose(pPackage->m_pFile);
FX_Free(pPackage);
}
FX_BOOL FXFC_LoadFile(FX_LPVOID p, FX_LPCSTR name, FX_LPBYTE& pBuffer, FX_DWORD& size)
{
FXFC_PACKAGE* pPackage = (FXFC_PACKAGE*)p;
FXSYS_fseek(pPackage->m_pFile, pPackage->m_IndexOffset, FXSYS_SEEK_SET);
FX_BYTE buf[128];
for (int i = 0; i < pPackage->m_nFiles; i ++) {
FXSYS_fread(buf, pPackage->m_IndexSize, 1, pPackage->m_pFile);
if (FXSYS_stricmp((FX_LPCSTR)buf, name) == 0) {
FX_DWORD offset = *(FX_DWORD*)&buf[64];
size = *(FX_DWORD*)&buf[68];
pBuffer = FX_Alloc(FX_BYTE, size);
FXSYS_fseek(pPackage->m_pFile, offset, FXSYS_SEEK_SET);
FXSYS_fread(pBuffer, size, 1, pPackage->m_pFile);
if (buf[72]) {
FX_DWORD orig_size;
FX_LPBYTE comp_buf = pBuffer;
CPDF_ModuleMgr::Get()->GetFlateModule()->FlateOrLZWDecode(FALSE, comp_buf, size, FALSE,
0, 0, 0, 0, 0, pBuffer, orig_size);
FX_Free(comp_buf);
size = orig_size;
}
return TRUE;
}
}
return FALSE;
}
FX_BOOL CPDF_FXMP::LoadFile(FX_LPVOID pPackage, FX_LPCSTR fileid)
{
if (m_pHeader) {
FX_Free(m_pHeader);
m_pHeader = NULL;
}
m_pTable = NULL;
FX_DWORD size;
if (!FXFC_LoadFile(pPackage, fileid, (FX_LPBYTE&)m_pHeader, size)) {
return FALSE;
}
if (FXSYS_memcmp32(m_pHeader, "FXMP", 4)) {
return FALSE;
}
m_pTable = (FX_LPBYTE)m_pHeader + m_pHeader->dwDataOffset;
return TRUE;
}
FX_LPBYTE CPDF_FXMP::GetRecord(FX_DWORD index)
{
if (m_pTable == NULL) {
return NULL;
}
if ((int)index < (int)m_pHeader->dwStartIndex || index > m_pHeader->dwEndIndex) {
return NULL;
}
return m_pTable + (index - m_pHeader->dwStartIndex) * m_pHeader->dwRecordSize;
}
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