CasePatternHelper.cpp
2.44 KB
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#include "CasePatternHelper.hpp"
using namespace std;
bool CasePatternHelper::checkInterpsGroupOrthCasePatterns(
const Environment& env,
const char* orthStart,
const char* orthEnd,
const InterpsGroup& ig) const {
const unsigned char* currPtr = ig.ptr;
unsigned char compressionByte = *currPtr++;
if (!this->caseSensitive || isOrthOnlyLower(compressionByte)) {
return true;
}
else if (isOrthOnlyTitle(compressionByte)) {
uint32_t cp = env.getCharsetConverter().next(orthStart, orthEnd);
return cp == env.getCaseConverter().toTitle(cp);
}
else {
unsigned char casePatternsNum = *currPtr++;
if (casePatternsNum == 0) {
return true;
}
else {
for (unsigned int i = 0; i < casePatternsNum; i++) {
const char* currOrthPtr = orthStart;
orthCodepoints.clear();
normalizedCodepoints.clear();
bool isDiff = false;
while (currOrthPtr != orthEnd) {
uint32_t codepoint = env.getCharsetConverter().next(currOrthPtr, orthEnd);
uint32_t normalizedCodepoint = env.getCaseConverter().toLower(codepoint);
orthCodepoints.push_back(codepoint);
normalizedCodepoints.push_back(normalizedCodepoint);
isDiff = isDiff || codepoint != normalizedCodepoint;
}
if (isDiff && checkCasePattern(
normalizedCodepoints,
orthCodepoints,
deserializeOneCasePattern(currPtr))) {
return true;
}
}
return false;
}
}
}
std::vector<bool> CasePatternHelper::deserializeOneCasePattern(const unsigned char*& ptr) {
std::vector<bool> res;
uint8_t casePatternType = *ptr++;
uint8_t prefixLength;
uint8_t patternLength;
switch (casePatternType) {
case LEMMA_ONLY_LOWER:
break;
case LEMMA_UPPER_PREFIX:
prefixLength = *ptr++;
res.resize(prefixLength, true);
break;
case LEMMA_MIXED_CASE:
patternLength = *ptr++;
for (unsigned int i = 0; i < patternLength; i++) {
uint8_t idx = *ptr++;
res.resize(idx + 1, false);
res[idx] = true;
}
break;
}
return res;
}