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/**
* VOPARAMS.C -- Interface to manage cmdline options or library parameters.
*
* @file voParams.c
* @author Mike Fitzpatrick
* @date 7/03/12
*
* @brief Interface to manage cmdline options or library parameters.
*/
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <string.h>
#include <errno.h>
#include "voApps.h"
#include "voAppsP.h"
#define MAXARGS 256
#define SZ_ARG 128
/**
* VO_PARAMINIT -- Initialize the task parameter vector.
*
* @brief Initialize the task parameter vector.
* @fn char **vo_paramInit (int argc, char *argv[])
*
* @param argc argument count
* @param argv argument vector
* @returns modified argument vector
*/
char **
vo_paramInit (int argc, char *argv[], char *opts, struct option long_opts[])
{
static char *pargv[MAXARGS], arg[SZ_ARG];
int i, j, len = 0;
memset (&pargv[0], 0, MAXARGS);
for (i=0; i < argc; i++) {
/* Make a local copy of the arg so we can modify it w/out side
* effects.
*/
memset (arg, 0, SZ_ARG);
strcpy (arg, argv[i]);
len = strlen (arg);
if (arg[0] != '-') {
pargv[i] = calloc (1, strlen (arg) + 6);
if (strchr (argv[i], (int) '='))
sprintf (pargv[i], "--%s", arg);
else if (argv[i][len-1] == '+') {
arg[len-1] = '\0';
sprintf (pargv[i], "--%s=1", arg);
} else if (argv[i][len-1] == '-') {
arg[len-1] = '\0';
sprintf (pargv[i], "--%s=0", arg);
} else
sprintf (pargv[i], "%s", arg);
} else {
if (arg[0] == '-' && arg[1] != '-') {
if (arg[2] == '=') {
/* Argument is of the form '-f=bar' instead of the form
* "--foo=bar" or "--foo bar" or "foo=bar". We need to
* rewrite it to be acceptable to getopt_long().
*/
char new[SZ_ARG];
memset (new, 0, SZ_ARG);
for (j=0; (char *)long_opts[j].name; j++) {
if ((int) long_opts[j].val == (int) arg[1]) {
sprintf (new, "--%s=%s",long_opts[j].name, &arg[3]);
memset (arg, 0, SZ_ARG);
strcpy (arg, new);
len = strlen (arg);
}
}
} else if (arg[2] != '=' && strchr (arg, (int)'=')) {
fprintf (stderr, "Illegal flag '%s', skipping.\n", arg);
continue;
}
}
pargv[i] = calloc (1, strlen (arg) + 1);
sprintf (pargv[i], "%s", arg);
}
}
#ifdef DEBUG
for (i=0; i < argc; i++)
fprintf (stderr, "argv[%d] = '%s'\n", i, pargv[i]);
#endif
return (pargv);
}
/**
* VO_PARAMNEXT -- Get the next parameter value.
*
* @brief Get the next parameter value.
* @fn int vo_paramNext (char *opts, struct option long_opts[],
* int argc, char *argv[], char *optval, int *posindex)
*
* @param opts option string
* @param long_opts long options struct
* @param argc argument count
* @param argv argument vector
* @param optval optional parameter argument
* @param posindex positional parameter index (0-based)
* @returns nothing
*/
int
vo_paramNext (char *opts, struct option long_opts[], int argc, char *argv[],
char *optval, int *posindex)
{
int ch = 0, index;
static int pos = 0, apos = 0;
apos++;
memset (optval, 0, SZ_FNAME);
#ifdef USE_GETOPT_LONG
ch = getopt_long (argc, argv, opts, long_opts, &index);
#else
ch = getopt_long_only (argc, argv, opts, long_opts, &index);
#endif
if (ch >= 0) {
if (ch > 0 && optarg) {
if ((strchr (optarg, (int)'=') != 0) && (optarg[0] != '-') &&
(argv[apos][0] == '-' && argv[apos][1] != '-') ) {
fprintf (stderr,
"Error: invalid argument = '%s' in vot_paramNext()\n",
argv[apos]);
return (PARG_ERR);
} else {
if (optarg[0] == '-') {
// optind--;
memset (optval, 0, SZ_FNAME);
} else
strcpy (optval, optarg);
}
} else if (ch == 0) {
*posindex = index;
if (optarg)
strcpy (optval, optarg);
}
} else {
if (argv[optind+pos]) {
strcpy (optval, argv[optind+pos]);
*posindex = pos++;
return (-pos);
} else
return (0);
}
#ifdef DEBUG
fprintf (stderr, "ch = %d (%c) optval='%s' optarg='%s' index=%d\n",
ch, ch, optval, optarg, index);
#endif
return (ch);
}
/**
* VO_PARAMFREE -- Free the allocated parameter vector.
*
* @brief Free the allocated parameter vector.
* @fn void vo_paramFree (int argc, char *argv[])
*
* @param argc argument count
* @param argv argument vector
* @returns nothing
*/
void
vo_paramFree (int argc, char *argv[])
{
register int i;
for (i=0; i < argc; i++) {
if (argv[i] && argv[i][0])
free ((void *)argv[i]);
}
}
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