/* Miscellaneous functions. */

#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <signal.h>
#include <sys/time.h>

#include "global.h"

/*************************************************************************/

/* Convert a signal name or number to an integer. */

int sigtoi(const char *sig)
{
    if (isdigit(*sig))
	return atoi(sig);
    else if (strcasecmp(sig, "HUP") == 0)
	return SIGHUP;
    else if (strcasecmp(sig, "INT") == 0)
	return SIGINT;
    else if (strcasecmp(sig, "QUIT") == 0)
	return SIGQUIT;
    else if (strcasecmp(sig, "ILL") == 0)
	return SIGILL;
    else if (strcasecmp(sig, "TRAP") == 0)
	return SIGTRAP;
    else if (strcasecmp(sig, "ABRT") == 0)
	return SIGABRT;
    else if (strcasecmp(sig, "IOT") == 0)
	return SIGIOT;
    else if (strcasecmp(sig, "BUS") == 0)
	return SIGBUS;
    else if (strcasecmp(sig, "FPE") == 0)
	return SIGFPE;
    else if (strcasecmp(sig, "KILL") == 0)
	return SIGKILL;
    else if (strcasecmp(sig, "USR1") == 0)
	return SIGUSR1;
    else if (strcasecmp(sig, "SEGV") == 0)
	return SIGSEGV;
    else if (strcasecmp(sig, "USR2") == 0)
	return SIGUSR2;
    else if (strcasecmp(sig, "PIPE") == 0)
	return SIGPIPE;
    else if (strcasecmp(sig, "ALRM") == 0)
	return SIGALRM;
    else if (strcasecmp(sig, "TERM") == 0)
	return SIGTERM;
    else if (strcasecmp(sig, "STKFLT") == 0)
	return SIGSTKFLT;
    else if (strcasecmp(sig, "CHLD") == 0)
	return SIGCHLD;
    else if (strcasecmp(sig, "CONT") == 0)
	return SIGCONT;
    else if (strcasecmp(sig, "STOP") == 0)
	return SIGSTOP;
    else if (strcasecmp(sig, "TSTP") == 0)
	return SIGTSTP;
    else if (strcasecmp(sig, "TTIN") == 0)
	return SIGTTIN;
    else if (strcasecmp(sig, "TTOU") == 0)
	return SIGTTOU;
    else if (strcasecmp(sig, "URG") == 0)
	return SIGURG;
    else if (strcasecmp(sig, "XCPU") == 0)
	return SIGXCPU;
    else if (strcasecmp(sig, "XFSZ") == 0)
	return SIGXFSZ;
    else if (strcasecmp(sig, "VTALRM") == 0)
	return SIGVTALRM;
    else if (strcasecmp(sig, "PROF") == 0)
	return SIGPROF;
    else if (strcasecmp(sig, "WINCH") == 0)
	return SIGWINCH;
    else if (strcasecmp(sig, "IO") == 0)
	return SIGIO;
    else if (strcasecmp(sig, "POLL") == 0)
	return SIGPOLL;
    else if (strcasecmp(sig, "PWR") == 0)
	return SIGPWR;
    else
	return 0;
}

/*************************************************************************/

/* Compute the difference time1-time2 and return it in milliseconds.  If
 * either parameter is NULL, the current time is used.  This function never
 * overflows.
 */

int tv_diff_milli(struct timeval *time1, struct timeval *time2)
{
    struct timeval now;

    gettimeofday(&now, NULL);
    if (!time1)
	time1 = &now;
    if (!time2)
	time2 = &now;
    if (time1->tv_sec - time2->tv_sec >= 2147483)
	return 2147483000;
    else if (time1->tv_sec - time2->tv_sec <= -2147483)
	return -2147483000;
    else
        return (time1->tv_sec - time2->tv_sec) * 1000
             + (time1->tv_usec-time2->tv_usec) / 1000;
}

/*************************************************************************/