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/*
Mount option parsing
Copyright (C) 2004 Miklos Szeredi <miklos@szeredi.hu>
This program can be distributed under the terms of the GNU GPL.
See the file COPYING.
*/
#include "opts.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <glib.h>
static int process_option(char *arg, struct opt opts[], int case_sensitive)
{
int i;
char *eq = strchr(arg, '=');
if (eq)
*eq = '\0';
for (i = 0; opts[i].optname != NULL; i++) {
if (case_sensitive) {
if (strcmp(opts[i].optname, arg) == 0)
break;
} else if (strcasecmp(opts[i].optname, arg) == 0)
break;
}
if (opts[i].optname == NULL) {
if (eq)
*eq = '=';
return 0;
}
opts[i].present = 1;
if (eq) {
if (opts[i].value)
g_free(opts[i].value);
opts[i].value = g_strdup(eq+1);
}
return 1;
}
static int process_option_group(char *arg, struct opt opts[],
int case_sensitive)
{
int remove = 1;
char *prevcomma = NULL;
while (1) {
int remove_one;
char *comma = strchr(arg, ',');
if (comma)
*comma = '\0';
remove_one = process_option(arg, opts, case_sensitive);
if (remove_one) {
if (comma)
memmove(arg, comma + 1, strlen(comma + 1) + 1);
} else {
remove = 0;
if (comma)
arg = comma + 1;
if (prevcomma)
*prevcomma = ',';
prevcomma = comma;
}
if (!comma)
break;
}
return remove;
}
void process_options(int *argcp, char *argv[], struct opt opts[],
int case_sensitive)
{
int argctr;
int newargctr;
for (argctr = 1, newargctr = 1; argctr < *argcp; argctr++) {
char *arg = argv[argctr];
int removed = 0;
if (arg[0] == '-' && arg[1] == 'o') {
if (arg[2])
removed = process_option_group(arg+2, opts, case_sensitive);
else {
if (argctr + 1 < *argcp) {
argctr++;
arg = argv[argctr];
removed = process_option_group(arg, opts, case_sensitive);
if (removed)
g_free(argv[argctr-1]);
else if (argctr != newargctr)
argv[newargctr++] = argv[argctr-1];
}
}
}
if (removed)
g_free(arg);
else {
if(argctr != newargctr)
argv[newargctr] = arg;
newargctr++;
}
}
*argcp = newargctr;
}
int opt_get_unsigned(const struct opt *o, unsigned *valp)
{
char *end;
unsigned val;
if (!o->value || !o->value[0]) {
fprintf(stderr, "Missing value for '%s' option\n", o->optname);
return -1;
}
val = strtoul(o->value, &end, 0);
if (end[0]) {
fprintf(stderr, "Invalid value for '%s' option\n", o->optname);
return -1;
}
*valp = val;
return 0;
}
char *opt_get_string(const struct opt *o)
{
if (!o->value || !o->value[0]) {
fprintf(stderr, "Missing value for '%s' option\n", o->optname);
return NULL;
}
return o->value;
}
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