parse_jobid.c

openPBS的开放源代码

/*
*         OpenPBS (Portable Batch System) v2.3 Software License
* 
* Copyright (c) 1999-2000 Veridian Information Solutions, Inc.
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* Software to other sites and locations.  Use and redistribution of
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/*
 *  parse_jobid
 *
 * takes a job_id string as input, parses it to separate the 
 * 'current_server[:port]' part, and returns this in the return 
 * argument 'server'; if things go OK, the function value is
 * set to 0, if errors, it is set to 1.   The 'current_server[:port]'
 * part of 'job_id' is removed, if it was present.
 *
 * Full legal syntax is:
 *  seq_number[.parent_server[:port]][@current_server[:port]]  
 */

static char ident[] = "@(#) $RCSfile: parse_jobid.c,v $ $Revision: 2.1.10.4 $";

#include <pbs_config.h>   /* the master config generated by configure */

#include <string.h>
#include <ctype.h>
#include "pbs_ifl.h"

#define MAXSERVERNAME PBS_MAXSERVERNAME+PBS_MAXPORTNUM+2
#define ISNAMECHAR(x) ( (isgraph(x)) && ((x) != '#') && ( (x) != '@') )

static char seq_number[PBS_MAXSEQNUM+1]; 
static int s_pos;
static char parent_server[MAXSERVERNAME]; 
static int p_pos;
static char current_server[MAXSERVERNAME]; 
static int c_pos;

int parse_jobid(job_id, arg_seq_number, arg_parent_server, arg_current_server)
char *job_id;
char **arg_seq_number;
char **arg_parent_server;
char **arg_current_server;
{
    int i;
    char *c;

    /* initialize static data for this parsing call */
    for ( i=0; i<PBS_MAXSEQNUM+1; i++ ) seq_number[i]='\0';
    s_pos = 0;
    for ( i=0; i<MAXSERVERNAME; i++ ) parent_server[i]='\0';
    p_pos = 0;
    for ( i=0; i<MAXSERVERNAME; i++ ) current_server[i]='\0';
    c_pos = 0;

    /* Begin the parse */
    c = job_id;
    while ( isspace(*c) ) c++;

    /* Looking for a seq_number */
    while ( *c != '\0' ) {
        if ( isdigit(*c) ) {
	    if ( s_pos >= PBS_MAXSEQNUM ) return 3;
            seq_number[s_pos++]=*c;
        } else
            break;
        c++;
    }
    if ( s_pos == 0 ) return 1;

    /* Looking for a parent_server */
    if ( *c == '.' ) {
        c++;
        while ( *c != '\0' ) {
            if ( ISNAMECHAR(*c) ) {
	        if ( p_pos >= MAXSERVERNAME ) return 3;
                parent_server[p_pos++]=*c;
            } else
                break;
            c++;
        }
        if ( p_pos == 0 ) return 1;
    }

    /* Looking for a current_server */
    if ( *c == '@' ) {
        c++;
        while ( *c != '\0' ) {
            if ( ISNAMECHAR(*c) ) {
	        if ( c_pos >= MAXSERVERNAME ) return 3;
                current_server[c_pos++]=*c;
            } else
                break;
            c++;
        }
        if ( c_pos == 0 ) return 1;
    }

    if ( *c != '\0' ) return 2;

    /* set char * pointers to static data, to arguments */
    if ( arg_seq_number != NULL ) *arg_seq_number = seq_number;
    if ( arg_parent_server != NULL ) *arg_parent_server = parent_server;
    if ( arg_current_server != NULL ) *arg_current_server = current_server;

    return 0;
}