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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 "core/fpdfapi/fpdf_cmaps/cmap_int.h"
#include "core/fpdfapi/fpdf_font/font_int.h"
#include "core/fpdfapi/include/cpdf_modulemgr.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 (*(uint16_t*)p1) - (*(uint16_t*)p2);
}
};
extern "C" {
static int compareWordRange(const void* key, const void* element) {
if (*(uint16_t*)key < *(uint16_t*)element) {
return -1;
}
if (*(uint16_t*)key > ((uint16_t*)element)[1]) {
return 1;
}
return 0;
}
};
extern "C" {
static int compareDWordRange(const void* p1, const void* p2) {
uint32_t key = *(uint32_t*)p1;
uint16_t hiword = (uint16_t)(key >> 16);
uint16_t* element = (uint16_t*)p2;
if (hiword < element[0]) {
return -1;
}
if (hiword > element[0]) {
return 1;
}
uint16_t loword = (uint16_t)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) {
uint32_t key = *(uint32_t*)p1;
uint32_t value = ((*(uint16_t*)p2) << 16) | ((uint16_t*)p2)[1];
if (key < value) {
return -1;
}
if (key > value) {
return 1;
}
return 0;
}
};
uint16_t FPDFAPI_CIDFromCharCode(const FXCMAP_CMap* pMap, uint32_t charcode) {
if (charcode >> 16) {
while (1) {
if (pMap->m_DWordMapType == FXCMAP_CMap::Range) {
uint16_t* found =
(uint16_t*)FXSYS_bsearch(&charcode, pMap->m_pDWordMap,
pMap->m_DWordCount, 8, compareDWordRange);
if (found) {
return found[3] + (uint16_t)charcode - found[1];
}
} else if (pMap->m_DWordMapType == FXCMAP_CMap::Single) {
uint16_t* found =
(uint16_t*)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;
}
uint16_t code = (uint16_t)charcode;
while (1) {
if (!pMap->m_pWordMap) {
return 0;
}
if (pMap->m_WordMapType == FXCMAP_CMap::Single) {
uint16_t* found = (uint16_t*)FXSYS_bsearch(
&code, pMap->m_pWordMap, pMap->m_WordCount, 4, compareWord);
if (found) {
return found[1];
}
} else if (pMap->m_WordMapType == FXCMAP_CMap::Range) {
uint16_t* found = (uint16_t*)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;
}
uint32_t FPDFAPI_CharCodeFromCID(const FXCMAP_CMap* pMap, uint16_t cid) {
while (1) {
if (pMap->m_WordMapType == FXCMAP_CMap::Single) {
const uint16_t* pCur = pMap->m_pWordMap;
const uint16_t* 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 uint16_t* pCur = pMap->m_pWordMap;
const uint16_t* 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 uint16_t* pCur = pMap->m_pDWordMap;
const uint16_t* pEnd = pMap->m_pDWordMap + pMap->m_DWordCount * 4;
while (pCur < pEnd) {
if (cid >= pCur[3] && cid <= pCur[3] + pCur[2] - pCur[1]) {
return (((uint32_t)pCur[0] << 16) | pCur[1]) + cid - pCur[3];
}
pCur += 4;
}
} else if (pMap->m_DWordMapType == FXCMAP_CMap::Single) {
const uint16_t* pCur = pMap->m_pDWordMap;
const uint16_t* pEnd = pMap->m_pDWordMap + pMap->m_DWordCount * 3;
while (pCur < pEnd) {
if (pCur[2] == cid) {
return ((uint32_t)pCur[0] << 16) | pCur[1];
}
pCur += 3;
}
}
if (pMap->m_UseOffset == 0) {
return 0;
}
pMap = pMap + pMap->m_UseOffset;
}
return 0;
}
void FPDFAPI_LoadCID2UnicodeMap(CIDSet charset,
const uint16_t*& pMap,
uint32_t& 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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