1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #include "../../../include/fpdfapi/fpdf_module.h" 8 #include "../../../include/fpdfapi/fpdf_resource.h" 9 #include "../../../include/fxcodec/fx_codec.h" 10 #include "font_int.h" 11 #ifndef _FPDFAPI_MINI_ 12 typedef struct { 13 FXSYS_FILE* m_pFile; 14 int m_nFiles; 15 int m_IndexSize; 16 int m_IndexOffset; 17 } FXFC_PACKAGE; 18 FX_LPVOID FXFC_LoadPackage(FX_LPCSTR name) 19 { 20 FXSYS_FILE* file = FXSYS_fopen(name, (FX_LPCSTR)"rb"); 21 if (file == NULL) { 22 return NULL; 23 } 24 FX_BYTE buf[256]; 25 size_t read = FXSYS_fread(buf, 1, 20, file); 26 if (*(FX_DWORD*)buf != 0x43465846) { 27 FXSYS_fclose(file); 28 return NULL; 29 } 30 FXFC_PACKAGE* pPackage = FX_Alloc(FXFC_PACKAGE, 1); 31 pPackage->m_pFile = file; 32 pPackage->m_nFiles = *(int*)(buf + 8); 33 pPackage->m_IndexSize = *(int*)(buf + 12); 34 pPackage->m_IndexOffset = *(int*)(buf + 16); 35 return pPackage; 36 } 37 void FXFC_ClosePackage(FX_LPVOID p) 38 { 39 FXFC_PACKAGE* pPackage = (FXFC_PACKAGE*)p; 40 FXSYS_fclose(pPackage->m_pFile); 41 FX_Free(pPackage); 42 } 43 FX_BOOL FXFC_LoadFile(FX_LPVOID p, FX_LPCSTR name, FX_LPBYTE& pBuffer, FX_DWORD& size) 44 { 45 FXFC_PACKAGE* pPackage = (FXFC_PACKAGE*)p; 46 FXSYS_fseek(pPackage->m_pFile, pPackage->m_IndexOffset, FXSYS_SEEK_SET); 47 FX_BYTE buf[128]; 48 size_t read = 0; 49 for (int i = 0; i < pPackage->m_nFiles; i ++) { 50 read = FXSYS_fread(buf, pPackage->m_IndexSize, 1, pPackage->m_pFile); 51 if (FXSYS_stricmp((FX_LPCSTR)buf, name) == 0) { 52 FX_DWORD offset = *(FX_DWORD*)&buf[64]; 53 size = *(FX_DWORD*)&buf[68]; 54 pBuffer = FX_Alloc(FX_BYTE, size); 55 FXSYS_fseek(pPackage->m_pFile, offset, FXSYS_SEEK_SET); 56 read = FXSYS_fread(pBuffer, size, 1, pPackage->m_pFile); 57 if (buf[72]) { 58 FX_DWORD orig_size; 59 FX_LPBYTE comp_buf = pBuffer; 60 CPDF_ModuleMgr::Get()->GetFlateModule()->FlateOrLZWDecode(FALSE, comp_buf, size, FALSE, 61 0, 0, 0, 0, 0, pBuffer, orig_size); 62 FX_Free(comp_buf); 63 size = orig_size; 64 } 65 return TRUE; 66 } 67 } 68 return FALSE; 69 } 70 FX_BOOL CPDF_FXMP::LoadFile(FX_LPVOID pPackage, FX_LPCSTR fileid) 71 { 72 if (m_pHeader) { 73 FX_Free(m_pHeader); 74 m_pHeader = NULL; 75 } 76 m_pTable = NULL; 77 FX_DWORD size; 78 if (!FXFC_LoadFile(pPackage, fileid, (FX_LPBYTE&)m_pHeader, size)) { 79 return FALSE; 80 } 81 if (FXSYS_memcmp32(m_pHeader, "FXMP", 4)) { 82 return FALSE; 83 } 84 m_pTable = (FX_LPBYTE)m_pHeader + m_pHeader->dwDataOffset; 85 return TRUE; 86 } 87 FX_LPBYTE CPDF_FXMP::GetRecord(FX_DWORD index) 88 { 89 if (m_pTable == NULL) { 90 return NULL; 91 } 92 if ((int)index < (int)m_pHeader->dwStartIndex || index > m_pHeader->dwEndIndex) { 93 return NULL; 94 } 95 return m_pTable + (index - m_pHeader->dwStartIndex) * m_pHeader->dwRecordSize; 96 } 97 #endif 98
