File indexing completed on 2024-09-29 09:15:49

 /*
     SPDX-FileCopyrightText: 2008 Akarsh Simha <akarshsimha@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 // Program to convert star data stored in a MySQL database into
 // the binary file format used by KStars
 
 // This version generates several split up data files with no headers
 // The headers / index table must be generated separately and the files
 // must be concatenated appropriately to generate the data file.
 
 #define DB_TBL                "nomad"
 #define DB_DB                 "stardb"
 #define VERBOSE               0
 #define HTM_LEVEL             6
 #define NTRIXELS              32768 // TODO: Change if HTM Level Changes
 #define INDEX_ENTRY_SIZE      12
 #define MYSQL_STARS_PER_QUERY 1000000
 
 #include "binfile.h"
 
 #include <mysql/mysql.h>
 #include <sys/types.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <math.h>
 #include <string.h>
 
 /*
  * struct to store star data, to be written in this format, into the binary file.
  */
 
 typedef struct deepStarData
 {
     int32_t RA;
     int32_t Dec;
     int16_t dRA;
     int16_t dDec;
     int16_t B;
     int16_t V;
 } deepStarData;
 
 int main(int argc, char *argv[])
 {
     /* === Declarations === */
 
     int ret, i;
 
     double Mag;
 
     u_int8_t htm_level;
     u_int16_t MSpT_unnamed;
 
     u_int32_t trixel_number;
 
     char query[512];
 
     /* File streams */
     FILE *f;   /* Pointer to "current" file */
     FILE *usf; /* Handle to star data file */
 
     /* deepStarData structure */
     deepStarData data;
 
     /* MySQL structures */
     MYSQL link;
     MYSQL_RES *result;
     MYSQL_ROW row;
 
     /* Check the number of arguments */
     if (argc <= 6)
     {
         fprintf(stderr, "USAGE %s DBUserName DBPassword DeepStarDataFile TrixelNumber DBName TableName\n", argv[0]);
         fprintf(stderr, "The database used is a MySQL DB on localhost. The default table name is `nomad`\n");
     }
 
     /* == Open all file streams required == */
     /* Unnamed Star Handling */
     usf = fopen(argv[3], "wb");
     if (usf == NULL)
     {
         fprintf(stderr, "ERROR: Could not open %s [Deep Star Data File] for binary write.\n", argv[3]);
         return 1;
     }
 
     trixel_number = atoi(argv[4]);
 
     /* MySQL connect */
     if (mysql_init(&link) == NULL)
     {
         fprintf(stderr, "ERROR: Failed to initialize MySQL connection!\n");
         return 1;
     }
 
     ret = mysql_real_connect(&link, "localhost", argv[1], argv[2], argv[5], 0, NULL, 0);
 
     if (!ret)
     {
         fprintf(stderr, "ERROR: MySQL connect failed for the following reason: %s\n", mysql_error(&link));
         fcloseall();
         return 1;
     }
 
     if (mysql_select_db(&link, argv[5]))
     {
         fprintf(stderr, "ERROR: Could not select MySQL database %s. MySQL said: %s", argv[5], mysql_error(&link));
         fcloseall();
         mysql_close(&link);
         return 1;
     }
 
     if (VERBOSE)
         fprintf(stdout, "Size of deepStarData structure: %d\n", sizeof(deepStarData));
 
     /* Build MySQL query for stars of the trixel */
     sprintf(query,
             "SELECT `Trixel`, `RA`, `Dec`, `dRA`, `dDec`, `B`, `V`, `UID` FROM `%s` WHERE `Trixel`=\'%d\' ORDER BY "
             "`Mag` ASC",
             (argc >= 7) ? argv[6] : DB_TBL, trixel_number);
 
     if (VERBOSE)
     {
         fprintf(stderr, "SQL Query: %s\n", query);
     }
 
     /* Execute MySQL query and get the result */
     mysql_real_query(&link, query, (unsigned int)strlen(query));
     result = mysql_use_result(&link);
 
     if (!result)
     {
         fprintf(stderr, "MySQL returned NULL result: %s\n", mysql_error(&link));
         fcloseall();
         mysql_close(&link);
         return 1;
     }
 
     /* Process the result row by row */
     while (row = mysql_fetch_row(result))
     {
         /* Very verbose details */
         if (VERBOSE > 1)
         {
             fprintf(stderr, "UID = %s\n", row[12]);
             for (i = 0; i <= 14; ++i)
                 fprintf(stderr, "\tField #%d = %s\n", i, row[i]);
         }
 
         f = usf;
 
         /* Convert various fields and make entries into the deepStarData structure */
         str2int32(&data.RA, row[1], 6);
         str2int32(&data.Dec, row[2], 5);
         str2int16(&data.dRA, row[3], 3);
         str2int16(&data.dDec, row[4], 3);
         str2int16(&data.B, row[5], 3);
         str2int16(&data.V, row[6], 3);
 
         /* Write the data into the appropriate data file and any names into the name file */
         if (VERBOSE)
             fprintf(stderr, "Writing UID = %s...", row[7]);
         fwrite(&data, sizeof(deepStarData), 1, f);
         if (VERBOSE)
             fprintf(stderr, "Done.\n");
     }
     mysql_free_result(result);
 
     fcloseall();
     mysql_close(&link);
 
     return 0;
 }