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yap-6.3/MYDDAS/myddas_top_level.c

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/*************************************************************************
* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: myddas_top_level.c *
* Last rev: 27/01/06 *
* mods: *
* comments: Top Level of the MYDDAS Interface *
* *
*************************************************************************/
#if defined MYDDAS_TOP_LEVEL && defined MYDDAS_MYSQL
#include "Yap.h"
#include "Yatom.h"
#include "myddas.h"
#include "myddas_structs.h"
#include "myddas_statistics.h"
#include <mysql/mysql.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined HAVE_LIBREADLINE
#include <readline/readline.h>
#include <readline/history.h>
#endif
#include <sys/times.h>
STATIC_PROTO(Int c_db_tl_readline,(void));
void Yap_InitMYDDAS_TopLevelPreds(void)
{
/* c_db_readline: +Prompt x -Line */
2012-10-19 18:11:20 +01:00
Yap_InitCPred("c_db_tl_readline", 2, c_db_tl_readline, SafePredFlag|SyncPredFlag);
}
typedef struct {
const char *name; /* User printable name of the function. */
char cmd_char; /* msql command character */
Int (*func)(char *str,char *); /* Function to call to do the job. */
//bool takes_params; /* Max parameters for command */
const char *doc; /* Documentation for this function. */
} COMMANDS;
static Int
c_db_tl_readline(void) {
Term arg_prompt = Deref(ARG1);
Term arg_line = Deref(ARG2);
char *prompt = AtomName(AtomOfTerm(arg_prompt));
char *line;
while (strlen(line = readline(prompt)) == 0) {
free(line);
}
add_history(line);
Term line_read = MkAtomTerm(Yap_LookupAtom(line));
free(line);
if (!Yap_unify(arg_line,line_read))
return FALSE;
return TRUE;
}
static void
myddas_top_level_print_time(MYDDAS_STATS_TIME time){
//TODO test for big queries, and see the output of mysql
printf("(");
printf("%d",time->u.time_final.seconds);
//MiliSeconds 2 decimal points
printf(".%d",time->u.time_final.miliseconds/10);
printf (" sec)");
}
#endif