diff options
Diffstat (limited to 'lexiconparameters.cpp')
| -rw-r--r-- | lexiconparameters.cpp | 81 |
1 files changed, 75 insertions, 6 deletions
diff --git a/lexiconparameters.cpp b/lexiconparameters.cpp index b32f632..9826ca3 100644 --- a/lexiconparameters.cpp +++ b/lexiconparameters.cpp @@ -25,6 +25,64 @@ using namespace Quackle; +class V0DawgInterpreter : public DawgInterpreter +{ + + virtual void loadDawg(ifstream &file, unsigned char *dawg) + { + int i = 0; + while (!file.eof()) + { + file.read((char*)(dawg) + i, 7); + i += 7; + } + } + + virtual void dawgAt(const unsigned char *dawg, int index, unsigned int &p, Letter &letter, bool &t, bool &lastchild, bool &british, int &playability) const + { + index *= 7; + p = (dawg[index] << 16) + (dawg[index + 1] << 8) + (dawg[index + 2]); + letter = dawg[index + 3]; + + t = (letter & 32) != 0; + lastchild = (letter & 64) != 0; + british = !(letter & 128); + letter = (letter & 31) + QUACKLE_FIRST_LETTER; + + playability = (dawg[index + 4] << 16) + (dawg[index + 5] << 8) + (dawg[index + 6]); + } + virtual int versionNumber() const { return 0; } +}; + +class V1DawgInterpreter : public DawgInterpreter +{ + + virtual void loadDawg(ifstream &file, unsigned char *dawg) + { + int i = 0; + while (!file.eof()) + { + file.read((char*)(dawg) + i, 7); + i += 7; + } + } + + virtual void dawgAt(const unsigned char *dawg, int index, unsigned int &p, Letter &letter, bool &t, bool &lastchild, bool &british, int &playability) const + { + index *= 7; + p = (dawg[index] << 16) + (dawg[index + 1] << 8) + (dawg[index + 2]); + letter = dawg[index + 3]; + + t = (letter & 32) != 0; + lastchild = (letter & 64) != 0; + british = !(letter & 128); + letter = (letter & 31) + QUACKLE_FIRST_LETTER; + + playability = (dawg[index + 4] << 16) + (dawg[index + 5] << 8) + (dawg[index + 6]); + } + virtual int versionNumber() const { return 1; } +}; + LexiconParameters::LexiconParameters() : m_dawg(0), m_gaddag(0) { @@ -45,6 +103,7 @@ void LexiconParameters::unloadDawg() { delete[] m_dawg; m_dawg = 0; + delete m_interpreter; } void LexiconParameters::unloadGaddag() @@ -64,14 +123,24 @@ void LexiconParameters::loadDawg(const string &filename) return; } - m_dawg = new unsigned char[7000000]; - - int i = 0; - while (!file.eof()) + char versionByte = file.get(); + file.unget(); + switch(versionByte) { - file.read((char*)(m_dawg) + i, 7); - i += 7; + case 0: + m_interpreter = new V0DawgInterpreter(); + break; + case 1: + m_interpreter = new V1DawgInterpreter(); + break; + default: + UVcout << "couldn't open dawg " << filename.c_str() << endl; + return; } + + m_dawg = new unsigned char[7000000]; + + m_interpreter->loadDawg(file, m_dawg); } void LexiconParameters::loadGaddag(const string &filename) |