diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_cmaps/fpdf_cmaps.cpp')
| -rw-r--r-- | core/src/fpdfapi/fpdf_cmaps/fpdf_cmaps.cpp | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/core/src/fpdfapi/fpdf_cmaps/fpdf_cmaps.cpp b/core/src/fpdfapi/fpdf_cmaps/fpdf_cmaps.cpp new file mode 100644 index 0000000000..9ab324b666 --- /dev/null +++ b/core/src/fpdfapi/fpdf_cmaps/fpdf_cmaps.cpp @@ -0,0 +1,183 @@ +// 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_resource.h"
+#include "../../../include/fpdfapi/fpdf_module.h"
+#include "../fpdf_font/font_int.h"
+#include "cmap_int.h"
+void FPDFAPI_FindEmbeddedCMap(const char* name, int charset, int coding, const FXCMAP_CMap*& pMap)
+{
+ pMap = NULL;
+ CPDF_FontGlobals* pFontGlobals = CPDF_ModuleMgr::Get()->GetPageModule()->GetFontGlobals();
+ const FXCMAP_CMap* pCMaps = pFontGlobals->m_EmbeddedCharsets[charset].m_pMapList;
+ int nCMaps = pFontGlobals->m_EmbeddedCharsets[charset].m_Count;
+ for (int i = 0; i < nCMaps; i ++) {
+ if (FXSYS_strcmp(name, pCMaps[i].m_Name)) {
+ continue;
+ }
+ pMap = &pCMaps[i];
+ break;
+ }
+}
+extern "C" {
+ static int compareWord(const void* p1, const void* p2)
+ {
+ return (*(FX_WORD*)p1) - (*(FX_WORD*)p2);
+ }
+};
+extern "C" {
+ static int compareWordRange(const void* key, const void* element)
+ {
+ if (*(FX_WORD*)key < * (FX_WORD*)element) {
+ return -1;
+ }
+ if (*(FX_WORD*)key > ((FX_WORD*)element)[1]) {
+ return 1;
+ }
+ return 0;
+ }
+};
+extern "C" {
+ static int compareDWordRange(const void* p1, const void* p2)
+ {
+ FX_DWORD key = *(FX_DWORD*)p1;
+ FX_WORD hiword = (FX_WORD)(key >> 16);
+ FX_WORD* element = (FX_WORD*)p2;
+ if (hiword < element[0]) {
+ return -1;
+ }
+ if (hiword > element[0]) {
+ return 1;
+ }
+ FX_WORD loword = (FX_WORD)key;
+ if (loword < element[1]) {
+ return -1;
+ }
+ if (loword > element[2]) {
+ return 1;
+ }
+ return 0;
+ }
+};
+extern "C" {
+ static int compareDWordSingle(const void* p1, const void* p2)
+ {
+ FX_DWORD key = *(FX_DWORD*)p1;
+ FX_DWORD value = ((*(FX_WORD*)p2) << 16) | ((FX_WORD*)p2)[1];
+ if (key < value) {
+ return -1;
+ }
+ if (key > value) {
+ return 1;
+ }
+ return 0;
+ }
+};
+FX_WORD FPDFAPI_CIDFromCharCode(const FXCMAP_CMap* pMap, FX_DWORD charcode)
+{
+ if (charcode >> 16) {
+ while (1) {
+ if (pMap->m_DWordMapType == FXCMAP_CMap::Range) {
+ FX_WORD* found = (FX_WORD*)FXSYS_bsearch(&charcode, pMap->m_pDWordMap, pMap->m_DWordCount, 8, compareDWordRange);
+ if (found) {
+ return found[3] + (FX_WORD)charcode - found[1];
+ }
+ } else if (pMap->m_DWordMapType == FXCMAP_CMap::Single) {
+ FX_WORD* found = (FX_WORD*)FXSYS_bsearch(&charcode, pMap->m_pDWordMap, pMap->m_DWordCount, 6, compareDWordSingle);
+ if (found) {
+ return found[2];
+ }
+ }
+ if (pMap->m_UseOffset == 0) {
+ return 0;
+ }
+ pMap = pMap + pMap->m_UseOffset;
+ }
+ return 0;
+ }
+ FX_WORD code = (FX_WORD)charcode;
+ while (1) {
+ if (pMap->m_pWordMap == NULL) {
+ return 0;
+ }
+ if (pMap->m_WordMapType == FXCMAP_CMap::Single) {
+ FX_WORD* found = (FX_WORD*)FXSYS_bsearch(&code, pMap->m_pWordMap, pMap->m_WordCount, 4, compareWord);
+ if (found) {
+ return found[1];
+ }
+ } else if (pMap->m_WordMapType == FXCMAP_CMap::Range) {
+ FX_WORD* found = (FX_WORD*)FXSYS_bsearch(&code, pMap->m_pWordMap, pMap->m_WordCount, 6, compareWordRange);
+ if (found) {
+ return found[2] + code - found[0];
+ }
+ }
+ if (pMap->m_UseOffset == 0) {
+ return 0;
+ }
+ pMap = pMap + pMap->m_UseOffset;
+ }
+ return 0;
+}
+FX_DWORD FPDFAPI_CharCodeFromCID(const FXCMAP_CMap* pMap, FX_WORD cid)
+{
+ while (1) {
+ if (pMap->m_WordMapType == FXCMAP_CMap::Single) {
+ const FX_WORD *pCur = pMap->m_pWordMap;
+ const FX_WORD *pEnd = pMap->m_pWordMap + pMap->m_WordCount * 2;
+ while (pCur < pEnd) {
+ if (pCur[1] == cid) {
+ return pCur[0];
+ }
+ pCur += 2;
+ }
+ } else if (pMap->m_WordMapType == FXCMAP_CMap::Range) {
+ const FX_WORD *pCur = pMap->m_pWordMap;
+ const FX_WORD *pEnd = pMap->m_pWordMap + pMap->m_WordCount * 3;
+ while (pCur < pEnd) {
+ if (cid >= pCur[2] && cid <= pCur[2] + pCur[1] - pCur[0]) {
+ return pCur[0] + cid - pCur[2];
+ }
+ pCur += 3;
+ }
+ }
+ if (pMap->m_UseOffset == 0) {
+ return 0;
+ }
+ pMap = pMap + pMap->m_UseOffset;
+ }
+ while (1) {
+ if (pMap->m_DWordMapType == FXCMAP_CMap::Range) {
+ const FX_WORD *pCur = pMap->m_pDWordMap;
+ const FX_WORD *pEnd = pMap->m_pDWordMap + pMap->m_DWordCount * 4;
+ while (pCur < pEnd) {
+ if (cid >= pCur[3] && cid <= pCur[3] + pCur[2] - pCur[1]) {
+ return (((FX_DWORD)pCur[0] << 16) | pCur[1]) + cid - pCur[3];
+ }
+ pCur += 4;
+ }
+ } else if (pMap->m_DWordMapType == FXCMAP_CMap::Single) {
+ const FX_WORD *pCur = pMap->m_pDWordMap;
+ const FX_WORD *pEnd = pMap->m_pDWordMap + pMap->m_DWordCount * 3;
+ while (pCur < pEnd) {
+ if (pCur[2] == cid) {
+ return ((FX_DWORD)pCur[0] << 16) | pCur[1];
+ }
+ pCur += 3;
+ }
+ }
+ if (pMap->m_UseOffset == 0) {
+ return 0;
+ }
+ pMap = pMap + pMap->m_UseOffset;
+ }
+ return 0;
+}
+void FPDFAPI_LoadCID2UnicodeMap(int charset, const FX_WORD*& pMap, FX_DWORD& count)
+{
+ CPDF_FontGlobals* pFontGlobals = CPDF_ModuleMgr::Get()->GetPageModule()->GetFontGlobals();
+ pMap = pFontGlobals->m_EmbeddedToUnicodes[charset].m_pMap;
+ count = pFontGlobals->m_EmbeddedToUnicodes[charset].m_Count;
+}
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