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/*
* This file contains the ini and command liner parser main.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include "parse.h"
static unsigned long get_mult_time(char c)
{
switch (c) {
case 'm':
case 'M':
return 60;
case 'h':
case 'H':
return 60 * 60;
case 'd':
case 'D':
return 24 * 60 * 60;
default:
return 1;
}
}
static unsigned long get_mult_bytes(char c)
{
switch (c) {
case 'k':
case 'K':
return 1024;
case 'm':
case 'M':
return 1024 * 1024;
case 'g':
case 'G':
return 1024 * 1024 * 1024;
default:
return 1;
}
}
/*
* convert string into decimal value, noting any size suffix
*/
static int str_to_decimal(const char *str, unsigned long long *val, int kilo)
{
int len;
len = strlen(str);
*val = strtoul(str, NULL, 10);
if (*val == ULONG_MAX && errno == ERANGE)
return 1;
if (kilo)
*val *= get_mult_bytes(str[len - 1]);
else
*val *= get_mult_time(str[len - 1]);
return 0;
}
static int check_str_bytes(const char *p, unsigned long long *val)
{
return str_to_decimal(p, val, 1);
}
static int check_str_time(const char *p, unsigned long long *val)
{
return str_to_decimal(p, val, 0);
}
void strip_blank_front(char **p)
{
char *s = *p;
while (isspace(*s))
s++;
}
void strip_blank_end(char *p)
{
char *s = p + strlen(p) - 1;
while (isspace(*s) || iscntrl(*s))
s--;
*(s + 1) = '\0';
}
static int check_range_bytes(char *str, unsigned long *val)
{
char suffix;
if (sscanf(str, "%lu%c", val, &suffix) == 2) {
*val *= get_mult_bytes(suffix);
return 0;
}
if (sscanf(str, "%lu", val) == 1)
return 0;
return 1;
}
static int check_int(const char *p, unsigned int *val)
{
if (sscanf(p, "%u", val) == 1)
return 0;
return 1;
}
static struct fio_option *find_option(struct fio_option *options,
const char *opt)
{
struct fio_option *o = &options[0];
while (o->name) {
if (!strcmp(o->name, opt))
return o;
o++;
}
return NULL;
}
static int handle_option(struct fio_option *o, const char *ptr, void *data)
{
unsigned int il, *ilp;
unsigned long long ull, *ullp;
unsigned long ul1, ul2, *ulp1, *ulp2;
char **cp;
int ret = 0, is_time = 0;
switch (o->type) {
case FIO_OPT_STR: {
fio_opt_str_fn *fn = o->cb;
ret = fn(data, ptr);
break;
}
case FIO_OPT_STR_VAL_TIME:
is_time = 1;
case FIO_OPT_STR_VAL: {
fio_opt_str_val_fn *fn = o->cb;
if (is_time)
ret = check_str_time(ptr, &ull);
else
ret = check_str_bytes(ptr, &ull);
if (ret)
break;
if (o->max_val && ull > o->max_val)
ull = o->max_val;
if (fn)
ret = fn(data, &ull);
else {
ullp = td_var(data, o->off1);
*ullp = ull;
}
break;
}
case FIO_OPT_STR_STORE:
cp = td_var(data, o->off1);
*cp = strdup(ptr);
break;
case FIO_OPT_RANGE: {
char *p1, *p2;
p1 = strchr(ptr, '-');
if (!p1) {
ret = 1;
break;
}
p2 = p1 + 1;
*p1 = '\0';
ret = 1;
if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) {
ret = 0;
ulp1 = td_var(data, o->off1);
ulp2 = td_var(data, o->off2);
if (ul1 > ul2) {
*ulp1 = ul2;
*ulp2 = ul1;
} else {
*ulp2 = ul2;
*ulp1 = ul1;
}
}
break;
}
case FIO_OPT_INT: {
fio_opt_int_fn *fn = o->cb;
ret = check_int(ptr, &il);
if (ret)
break;
if (o->max_val && il > o->max_val)
il = o->max_val;
if (fn)
ret = fn(data, &il);
else {
ilp = td_var(data, o->off1);
*ilp = il;
}
break;
}
case FIO_OPT_STR_SET: {
fio_opt_str_set_fn *fn = o->cb;
if (fn)
ret = fn(data);
else {
ilp = td_var(data, o->off1);
*ilp = 1;
}
break;
}
default:
fprintf(stderr, "Bad option type %d\n", o->type);
ret = 1;
}
return ret;
}
int parse_cmd_option(const char *opt, const char *val,
struct fio_option *options, void *data)
{
struct fio_option *o;
o = find_option(options, opt);
if (!o) {
fprintf(stderr, "Bad option %s\n", opt);
return 1;
}
return handle_option(o, val, data);
}
int parse_option(const char *opt, struct fio_option *options, void *data)
{
struct fio_option *o;
char *pre, *post;
char tmp[64];
strcpy(tmp, opt);
pre = strchr(tmp, '=');
if (pre) {
post = pre;
*pre = '\0';
pre = tmp;
post++;
o = find_option(options, pre);
} else {
o = find_option(options, tmp);
post = NULL;
}
if (!o) {
fprintf(stderr, "Bad option %s\n", tmp);
return 1;
}
return handle_option(o, post, data);
}
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