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/*
* Copyright (c) 2001-2003 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 1998-2001 University of Notre Dame.
* All rights reserved.
* Copyright (c) 1994-1998 The Ohio State University.
* All rights reserved.
*
* This file is part of the LAM/MPI software package. For license
* information, see the LICENSE file in the top level directory of the
* LAM/MPI source distribution.
*
* $HEADER$
*
* $Id: pdi_parse.c,v 6.9 2003/07/05 21:44:46 jsquyres Exp $
*
* Function: - node identifier parsing package
* - id_range() based in part on Trollius 2.0,
* Copyright 1990 The Ohio State University and Cornell
* Research Foundation
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <all_list.h>
#include <args.h>
#include <net.h>
#include <pdi.h>
#include <portable.h>
#include <preq.h>
#include <terror.h>
#include <typical.h>
#include <sfh.h>
#define NEW 1
#define ONE 2
#define MANY 3
/*
* local functions
*/
static int id_range(char *s, int4 flags, int *ixp, LIST *lp);
/*
* pdi_parse
*
* Functions: - parses process identifier mnemonics
* Accepts: - command line count
* - command line vector
* - leftover vector (returned)
* Returns: - process list or null
*/
LIST *
pdi_parse(int argc, char **argv, char ***othersv)
{
int index = 0; /* current index */
int othersc; /* leftover count */
LIST * proclist; /* node ID list */
/*
* Initialize the list.
*/
proclist = al_init(sizeof(struct pdi), 0);
if (proclist == 0) return(0);
/*
* Pass argument 0 through.
*/
if (othersv) {
othersc = 0;
*othersv = 0;
if (sfh_argv_add(&othersc, othersv, argv[0])) {
al_free(proclist);
return(0);
}
}
argc--;
argv++;
/*
* Loop through all the arguments.
*/
while (argc) {
/*
* Is it a generic node identifier?
*/
if ((**argv == 'p') && isdigit((int) *(*argv + 1))) {
if (id_range(*argv + 1, SELECT_PID, &index, proclist)) {
al_free(proclist);
sfh_argv_free(*othersv);
return(0);
}
}
/*
* Is it an index identifier?
*/
else if (((**argv == '%') || (**argv == 'i')) &&
isdigit((int) *(*argv + 1))) {
if (id_range(*argv + 1,
SELECT_INDEX, &index, proclist)) {
al_free(proclist);
sfh_argv_free(*othersv);
return(0);
}
}
/*
* Bump the non-id pointer and counter.
*/
else if (othersv) {
if (sfh_argv_add(&othersc, othersv, argv[0])) {
al_free(proclist);
sfh_argv_free(*othersv);
return(0);
}
}
argc--;
argv++;
}
return(proclist);
}
/*
* id_range
*
* Function: - parses the ID range format
* - example: 1,3-5,7
* Accepts: - range string
* - flags to use with every value found
* - current index ptr
* - list descriptor ptr
* Returns: - 0 or ERROR
*/
static int
id_range(char *s, int4 flags, int *ixp, LIST *lp)
{
int c; /* current character */
int4 id; /* current identifier */
int4 oldid = 0; /* previous identifier */
int mode; /* parsing state */
struct pdi newpdi; /* new list entry */
char *t; /* bumped up s */
mode = NEW;
while ((c = *s) != '\0') {
if (c == ',') {
if (mode == NEW) {
errno = EBADIDSPEC;
return(LAMERROR);
}
++s;
mode = NEW;
}
else if (c == '-') {
if (mode != ONE) {
errno = EBADIDSPEC;
return(LAMERROR);
}
++s;
mode = MANY;
}
else {
id = strtol(s, &t, 0);
if ((id == 0) && (s == t)) {
errno = EBADIDSPEC;
return(LAMERROR);
}
s = t;
if (mode == NEW) {
newpdi.pdi_node = id;
newpdi.pdi_flags = flags;
newpdi.pdi_count = 1;
newpdi.pdi_index = (*ixp)++;
if (al_append(lp, &newpdi) == 0) return(LAMERROR);
oldid = id;
mode = ONE;
}
else if (mode == MANY) {
if (id < oldid) {
errno = EBADIDSPEC;
return(LAMERROR);
}
while (++oldid <= id) {
newpdi.pdi_node = oldid;
newpdi.pdi_flags = flags;
newpdi.pdi_count = 1;
newpdi.pdi_index = (*ixp)++;
if (al_append(lp, &newpdi) == 0)
return(LAMERROR);
}
}
else {
errno = EIMPOSSIBLE;
return(LAMERROR);
}
}
} /* while() */
return (0);
}
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