tools/sci/org.eclipse.ptp.sci/common/tools.cpp

#ifndef _PRAGMA_COPYRIGHT_
#define _PRAGMA_COPYRIGHT_
#pragma comment(copyright, "%Z% %I% %W% %D% %T%\0")
#endif /* _PRAGMA_COPYRIGHT_ */
/****************************************************************************

* Copyright (c) 2008, 2010 IBM Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0s
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html

 Classes: None

 Description: Tool functions.
   
 Author: Nicole Nie, Liu Wei

 History:
   Date     Who ID    Description
   -------- --- ---   -----------
   10/06/08 nieyy        Initial code (D153875)

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

#include "tools.hpp"
#include <ctype.h>
#include <fcntl.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <netdb.h>                                                              
#include <netinet/in.h>                                                         
#include <sys/socket.h>   
#include <string.h>
#include <sys/param.h>
#include <sys/time.h> 
#include <dlfcn.h>

#include "exception.hpp"

string SysUtil::itoa(int value)
{
    static char buffer[32];
    sprintf(buffer, "%d", value);
    return string(buffer);
}

double SysUtil::microseconds()
{
    struct timeval time_v;
    ::gettimeofday(&time_v, NULL);
    return time_v.tv_sec * 1e6 + time_v.tv_usec;
}

void SysUtil::sleep(int nsecs)
{
    struct timespec req;
    req.tv_sec = nsecs / 1000000;
    req.tv_nsec = (nsecs % 1000000) * 1000;
    ::nanosleep (&req, NULL);
}

string SysUtil::get_hostname(const char * name)
{
    string uniquestring;
    
    struct addrinfo hints, *host = NULL, *ressave = NULL;
    memset(&hints, 0, sizeof(struct addrinfo));
    hints.ai_flags = AI_CANONNAME;
    hints.ai_family = AF_UNSPEC;
    hints.ai_socktype = SOCK_STREAM;
    int rc = ::getaddrinfo(name, NULL, &hints, &host);
    if (rc < 0)
        throw Exception(Exception::GET_ADDR_INFO);
    ressave = host;
    uniquestring = string(host->ai_canonname);
    ::freeaddrinfo(ressave);

    return uniquestring;
}

char* SysUtil::get_path_name(const char *program)
{
    static char path[MAXPATHLEN];
    sprintf(path, "which %s", program);
    FILE *fp = popen(path, "r");
    if (!fp)
        return NULL;
    path[0] = '\0';
    fscanf(fp, "%s", path);
    pclose(fp);
    if (!path[0]){
        return NULL;
    }
    if (path[0] == '.' && path[1] == '/') {
        char save_path[MAXPATHLEN];
        strcpy(save_path, path);
        strcpy(path, getenv("PWD"));
        strcat(path, save_path + 1);
    }
    return path;
}