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-rw-r--r--core/fpdfapi/font/cpdf_cmap.cpp46
1 files changed, 19 insertions, 27 deletions
diff --git a/core/fpdfapi/font/cpdf_cmap.cpp b/core/fpdfapi/font/cpdf_cmap.cpp
index 7b88346d64..9e8c48bb27 100644
--- a/core/fpdfapi/font/cpdf_cmap.cpp
+++ b/core/fpdfapi/font/cpdf_cmap.cpp
@@ -184,48 +184,43 @@ const PredefinedCMap g_PredefinedCMaps[] = {
int CheckFourByteCodeRange(uint8_t* codes,
FX_STRSIZE size,
const std::vector<CPDF_CMap::CodeRange>& ranges) {
- int iSeg = pdfium::CollectionSize<int>(ranges) - 1;
- while (iSeg >= 0) {
- if (ranges[iSeg].m_CharSize < size) {
- --iSeg;
+ for (size_t i = ranges.size(); i > 0; i--) {
+ size_t seg = i - 1;
+ if (ranges[seg].m_CharSize < size)
continue;
- }
- int iChar = 0;
+ FX_STRSIZE iChar = 0;
while (iChar < size) {
- if (codes[iChar] < ranges[iSeg].m_Lower[iChar] ||
- codes[iChar] > ranges[iSeg].m_Upper[iChar]) {
+ if (codes[iChar] < ranges[seg].m_Lower[iChar] ||
+ codes[iChar] > ranges[seg].m_Upper[iChar]) {
break;
}
++iChar;
}
- if (iChar == ranges[iSeg].m_CharSize)
+ if (iChar == ranges[seg].m_CharSize)
return 2;
if (iChar)
- return (size == ranges[iSeg].m_CharSize) ? 2 : 1;
- iSeg--;
+ return (size == ranges[seg].m_CharSize) ? 2 : 1;
}
return 0;
}
-int GetFourByteCharSizeImpl(uint32_t charcode,
- const std::vector<CPDF_CMap::CodeRange>& ranges) {
+size_t GetFourByteCharSizeImpl(
+ uint32_t charcode,
+ const std::vector<CPDF_CMap::CodeRange>& ranges) {
if (ranges.empty())
return 1;
uint8_t codes[4];
codes[0] = codes[1] = 0x00;
- codes[2] = (uint8_t)(charcode >> 8 & 0xFF);
- codes[3] = (uint8_t)charcode;
- FX_STRSIZE offset = 0;
- int size = 4;
- for (int i = 0; i < 4; ++i) {
- int iSeg = pdfium::CollectionSize<int>(ranges) - 1;
- while (iSeg >= 0) {
- if (ranges[iSeg].m_CharSize < size) {
- --iSeg;
+ codes[2] = static_cast<uint8_t>(charcode >> 8 & 0xFF);
+ codes[3] = static_cast<uint8_t>(charcode);
+ for (FX_STRSIZE offset = 0; offset < 4; offset++) {
+ FX_STRSIZE size = 4 - offset;
+ for (size_t j = 0; j < ranges.size(); j++) {
+ size_t iSeg = (ranges.size() - 1) - j;
+ if (ranges[iSeg].m_CharSize < size)
continue;
- }
- int iChar = 0;
+ FX_STRSIZE iChar = 0;
while (iChar < size) {
if (codes[offset + iChar] < ranges[iSeg].m_Lower[iChar] ||
codes[offset + iChar] > ranges[iSeg].m_Upper[iChar]) {
@@ -235,10 +230,7 @@ int GetFourByteCharSizeImpl(uint32_t charcode,
}
if (iChar == ranges[iSeg].m_CharSize)
return size;
- --iSeg;
}
- --size;
- ++offset;
}
return 1;
}