feat(opatIO): opat fileformat addedd

src/opatIO/public/opatIO.h

@@ -0,0 +1,93 @@
+#ifndef OPATIO_H
+#define OPATIO_H
+
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <vector>
+#include <queue>
+
+struct Header {
+    char magic[4];
+    uint16_t version;
+    uint32_t numTables;
+    uint32_t headerSize;
+    uint64_t indexOffset;
+    char creationDate[16];
+    char sourceInfo[64];
+    char comment[128];
+    char reserved[26]; 
+};
+
+struct TableIndex {
+    double X;
+    double Z;
+    // double C; // For type 2 OPAL tables. When not set will be 0
+    // double O; // For type 2 OPAL tables. When not set will be 0
+    uint64_t byteStart;
+    uint64_t byteEnd;
+    char sha256[32];
+};
+
+struct OPATTable {
+    uint32_t N_R;
+    uint32_t N_T;
+    std::vector<double> logR;
+    std::vector<double> logT;
+    std::vector<std::vector<double>> logKappa;
+};
+
+class OpatIO {
+private:
+    Header header;
+    std::vector<TableIndex> tableIndex;
+    std::queue<OPATTable> tableQueue;
+    int maxQDepth = 10;
+    std::string filename;
+    bool loaded = false;
+
+    void readHeader(std::ifstream &file);
+    void readTableIndex(std::ifstream &file);
+
+    bool isTableInQueue(double X, double Z);
+    OPATTable getTableFromQueue(double X, double Z);
+    void addTableToQueue(OPATTable table);
+    void removeTableFromQueue();
+
+    void flushQueue();
+
+    uint16_t getOPATVersion();
+
+    uint16_t getTableID(double X, double Z);
+    uint64_t getTableByteStart(uint16_t tableID);
+    uint64_t getTableByteEnd(uint16_t tableID);
+
+public:
+    OpatIO();
+    OpatIO(std::string filename);
+    ~OpatIO();
+
+    OPATTable getTable(double X, double, double C=0, double O=0);
+    OPATTable getTable(uint16_t tableID);
+    void setMaxQDepth(int depth);
+    int getMaxQDepth();
+    void setFilename(std::string filename);
+    void load();
+    void unload();
+    bool isLoaded();
+
+    void printHeader();
+    void printTableIndex();
+    void printTable(OPATTable table);
+
+    std::vector<OPATTable> getTables();
+    std::vector<TableIndex> getTableIndex();
+    Header getHeader();
+
+    std::vector<OPATTable> getClosestXTables(double X, double ZExact, double C=0, double O=0, int numTables=1);
+    std::vector<OPATTable> getClosestZTables(double XExact, double Z, double C=0, double O=0, int numTables=1);
+    std::vector<OPATTable> getClosestTables(double X, double Z, double C=0, double O=0, int numTables=1);  
+};
+
+
+#endif