InterpretedChunksDecoder4Analyzer.cpp
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/*
* File: InterpretedChunksDecoder4Analyzer.cpp
* Author: mlenart
*
* Created on 15 maj 2014, 15:28
*/
#include "InterpretedChunksDecoder4Analyzer.hpp"
#include <string>
using namespace std;
namespace morfeusz {
InterpretedChunksDecoder4Analyzer::InterpretedChunksDecoder4Analyzer(const Environment& env) : InterpretedChunksDecoder(env) {
}
void InterpretedChunksDecoder4Analyzer::decode(
unsigned int startNode,
unsigned int endNode,
const InterpretedChunk& interpretedChunk,
std::vector<MorphInterpretation>& out) const {
string orth;
string lemma4Prefixes;
if (tryToGetLemma4Prefixes(interpretedChunk, lemma4Prefixes)) {
orth.insert(orth.end(), interpretedChunk.chunkStartPtr, interpretedChunk.chunkEndPtr);
const unsigned char* currPtr = getInterpretationsPtr(interpretedChunk.interpsGroupPtr);
while (currPtr < interpretedChunk.interpsEndPtr) {
DecodeMorphInterpParams params = {startNode, endNode, orth, lemma4Prefixes, interpretedChunk};
this->decodeMorphInterpretation(params, currPtr, out);
}
}
}
void InterpretedChunksDecoder4Analyzer::decodeLemma(
const EncodedForm& encodedLemma,
int nonPrefixCodepointsNum,
bool forPrefix,
string& res) const {
unsigned int prefixSegmentsOrthLength = forPrefix
? 0
: (unsigned int) normalizedCodepoints.size() - nonPrefixCodepointsNum;
size_t endIdx = forPrefix
? normalizedCodepoints.size()
: normalizedCodepoints.size() - encodedLemma.suffixToCut;
for (unsigned int i = prefixSegmentsOrthLength + encodedLemma.prefixToCut; i < endIdx; i++) {
uint32_t cp =
(i < encodedLemma.casePattern.size() && encodedLemma.casePattern[i])
? env.getCaseConverter().toTitle(normalizedCodepoints[i])
: normalizedCodepoints[i];
env.getCharsetConverter().append(cp, res);
}
if (!forPrefix) {
const char* suffixPtr = encodedLemma.suffixToAdd.c_str();
const char* suffixEnd = suffixPtr + encodedLemma.suffixToAdd.length();
while (suffixPtr != suffixEnd) {
uint32_t cp = UTF8CharsetConverter::getInstance().next(suffixPtr, suffixEnd);
env.getCharsetConverter().append(cp, res);
}
}
}
void InterpretedChunksDecoder4Analyzer::decodeEncodedForm(const unsigned char*& ptr, unsigned char compressionByte, EncodedForm& encodedForm) const {
encodedForm.prefixToCut = hasCompressedPrefixCut(compressionByte)
? getPrefixCutLength(compressionByte)
: readInt8(ptr);
encodedForm.suffixToCut = readInt8(ptr);
encodedForm.suffixToAdd = readString(ptr);
assert(encodedForm.casePattern.size() == 0);
if (isLemmaOnlyLower(compressionByte)) {
// do nothing - empty case pattern
} else if (isLemmaOnlyTitle(compressionByte)) {
encodedForm.casePattern.push_back(true);
} else {
encodedForm.casePattern = env.getCasePatternHelper().deserializeOneCasePattern(ptr);
}
}
EncodedInterpretation InterpretedChunksDecoder4Analyzer::decodeEncodedInterp(const unsigned char*& ptr, unsigned char compressionByte) const {
EncodedInterpretation interp;
if (isOrthOnlyLower(compressionByte)) {
} else if (isOrthOnlyTitle(compressionByte)) {
interp.orthCasePattern.push_back(true);
} else {
interp.orthCasePattern = this->env.getCasePatternHelper().deserializeOneCasePattern(ptr);
}
decodeEncodedForm(ptr, compressionByte, interp.value);
interp.tag = readInt16(ptr);
interp.nameClassifier = *ptr++;
interp.qualifiers = readInt16(ptr);
return interp;
}
// this function is to make "niePolak" recognized but not "Niepolak" (for segmentation: "nie> Polak")
static void addPrefixLengthToCasePatterns(const InterpretedChunk& chunk, EncodedInterpretation& ei) {
for (unsigned int i = 0; i < chunk.prefixChunks.size(); i++) {
const InterpretedChunk& prefixChunk = chunk.prefixChunks[i];
ei.orthCasePattern.insert(ei.orthCasePattern.begin(), prefixChunk.codepointsNum, false);
ei.value.casePattern.insert(ei.value.casePattern.begin(), prefixChunk.codepointsNum, false);
}
}
void InterpretedChunksDecoder4Analyzer::decodeMorphInterpretation(
const DecodeMorphInterpParams& params,
const unsigned char*& ptr,
std::vector<MorphInterpretation>& out) const {
orthCodepoints.resize(0);
normalizedCodepoints.resize(0);
const char* currPtr = params.chunk.textStartPtr;
while (currPtr != params.chunk.textEndPtr) {
uint32_t cp = env.getCharsetConverter().next(currPtr, params.chunk.textEndPtr);
orthCodepoints.push_back(cp);
normalizedCodepoints.push_back(env.getCaseConverter().toLower(cp));
}
EncodedInterpretation ei = this->decodeEncodedInterp(ptr, *params.chunk.interpsGroupPtr);
if (!ei.orthCasePattern.empty() && !params.chunk.prefixChunks.empty()) {
addPrefixLengthToCasePatterns(params.chunk, ei);
}
if (params.chunk.forceIgnoreCase || env.getCasePatternHelper().checkCasePattern(normalizedCodepoints, orthCodepoints, ei.orthCasePattern)) {
string lemma(params.lemma4Prefixes);
lemma.reserve(lemma.size() + normalizedCodepoints.size());
this->decodeLemma(ei.value, params.chunk.codepointsNum, false, lemma);
size_t newIdx = out.size();
out.resize(newIdx + 1);
MorphInterpretation& newElem = out[newIdx];
newElem.startNode = params.startNode;
newElem.endNode = params.endNode;
newElem.orth = params.orth;
newElem.lemma = lemma;
newElem.tagId = ei.tag;
newElem.nameId = ei.nameClassifier;
newElem.labelsId = ei.qualifiers;
}
}
bool InterpretedChunksDecoder4Analyzer::tryToGetLemma4Prefixes(
const InterpretedChunk& interpretedChunk,
string& lemma4Prefixes) const {
for (unsigned int i = 0; i < interpretedChunk.prefixChunks.size(); i++) {
const InterpretedChunk& prefixChunk = interpretedChunk.prefixChunks[i];
if (!tryToGetLemma4OnePrefix(prefixChunk, lemma4Prefixes)) {
return false;
}
}
return true;
}
bool InterpretedChunksDecoder4Analyzer::tryToGetLemma4OnePrefix(const InterpretedChunk& prefixChunk, std::string& lemma4Prefixes) const {
orthCodepoints.resize(0);
normalizedCodepoints.resize(0);
const char* currTextPtr = prefixChunk.textNoPrefixesStartPtr;
while (currTextPtr != prefixChunk.textEndPtr) {
uint32_t cp = env.getCharsetConverter().next(currTextPtr, prefixChunk.textEndPtr);
orthCodepoints.push_back(cp);
normalizedCodepoints.push_back(env.getCaseConverter().toLower(cp));
}
const unsigned char* currPtr = getInterpretationsPtr(prefixChunk.interpsGroupPtr);
EncodedInterpretation ei = this->decodeEncodedInterp(currPtr, *prefixChunk.interpsGroupPtr);
if (prefixChunk.forceIgnoreCase || env.getCasePatternHelper().checkCasePattern(normalizedCodepoints, orthCodepoints, ei.orthCasePattern)) {
this->decodeLemma(ei.value, prefixChunk.codepointsNum, true, lemma4Prefixes);
return true;
} else {
return false;
}
}
}