[fio.git] / parse.c

/*
 * 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);
	if (!len)
		return 1;

	*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(const 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,
			   int first)
{
	unsigned int il, *ilp1, *ilp2;
	unsigned long long ull, *ullp;
	unsigned long ul1, ul2;
	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:
	case FIO_OPT_STR_VAL_INT: {
		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 {
			if (o->type == FIO_OPT_STR_VAL_INT) {
				if (first) {
					ilp1 = td_var(data, o->off1);
					*ilp1 = ull;
					if (o->off2) {
						ilp1 = td_var(data, o->off2);
						*ilp1 = ull;
					}
				} else if (o->off2) {
					ilp1 = td_var(data, o->off2);
					*ilp1 = ull;
				}
			} else {
				if (first) {
					ullp = td_var(data, o->off1);
					*ullp = ull;
					if (o->off2) {
						ullp = td_var(data, o->off2);
						*ullp = ull;
					}
				} else if (o->off2) {
					ullp = td_var(data, o->off2);
					*ullp = ull;
				}
			}
		}
		break;
	}
	case FIO_OPT_STR_STORE:
		cp = td_var(data, o->off1);
		*cp = strdup(ptr);
		break;
	case FIO_OPT_RANGE: {
		char tmp[128];
		char *p1, *p2;

		strncpy(tmp, ptr, sizeof(tmp) - 1);

		p1 = strchr(tmp, '-');
		if (!p1) {
			ret = 1;
			break;
		}

		p2 = p1 + 1;
		*p1 = '\0';
		p1 = tmp;

		ret = 1;
		if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) {
			ret = 0;
			if (ul1 > ul2) {
				unsigned long foo = ul1;

				ul1 = ul2;
				ul2 = foo;
			}

			if (first) {
				ilp1 = td_var(data, o->off1);
				ilp2 = td_var(data, o->off2);
				*ilp1 = ul1;
				*ilp2 = ul2;
				if (o->off3 && o->off4) {
					ilp1 = td_var(data, o->off3);
					ilp2 = td_var(data, o->off4);
					*ilp1 = ul1;
					*ilp2 = ul2;
				}
			} else if (o->off3 && o->off4) {
				ilp1 = td_var(data, o->off3);
				ilp2 = td_var(data, o->off4);
				*ilp1 = ul1;
				*ilp2 = ul2;
			}
		}	
			
		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 {
			if (first || !o->off2)
				ilp1 = td_var(data, o->off1);
			else
				ilp1 = td_var(data, o->off2);

			*ilp1 = il;
		}
		break;
	}
	case FIO_OPT_STR_SET: {
		fio_opt_str_set_fn *fn = o->cb;

		if (fn)
			ret = fn(data);
		else {
			if (first || !o->off2)
				ilp1 = td_var(data, o->off1);
			else
				ilp1 = td_var(data, o->off2);

			*ilp1 = 1;
		}
		break;
	}
	default:
		fprintf(stderr, "Bad option type %d\n", o->type);
		ret = 1;
	}

	return ret;
}

static int handle_option(struct fio_option *o, const char *ptr, void *data)
{
	const char *ptr2;
	int ret;

	ret = __handle_option(o, ptr, data, 1);
	if (ret)
		return ret;

	/*
	 * See if we have a second set of parameters, hidden after a comma
	 */
	ptr2 = strchr(ptr, ',');
	if (!ptr2)
		return 0;

	ptr2++;
	return __handle_option(o, ptr2, data, 0);
}

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;
	}

	if (!handle_option(o, val, data))
		return 0;

	fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
	return 1;
}

int parse_option(const char *opt, struct fio_option *options, void *data)
{
	struct fio_option *o;
	char *pre, *post;
	char tmp[64];

	strncpy(tmp, opt, sizeof(tmp) - 1);

	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;
	}

	if (!handle_option(o, post, data))
		return 0;

	fprintf(stderr, "fio: failed parsing %s\n", opt);
	return 1;
}
Commit	Line	Data
cb2c86fd JA	1	/*
	2	* This file contains the ini and command liner parser main.
	3	*/
	4	#include <stdio.h>
	5	#include <stdlib.h>
	6	#include <unistd.h>
	7	#include <ctype.h>
	8	#include <string.h>
	9	#include <errno.h>
	10	#include <limits.h>
	11
	12	#include "parse.h"
	13
	14	static unsigned long get_mult_time(char c)
	15	{
	16	switch (c) {
	17	case 'm':
	18	case 'M':
	19	return 60;
	20	case 'h':
	21	case 'H':
	22	return 60 * 60;
	23	case 'd':
	24	case 'D':
	25	return 24 * 60 * 60;
	26	default:
	27	return 1;
	28	}
	29	}
	30
	31	static unsigned long get_mult_bytes(char c)
	32	{
	33	switch (c) {
	34	case 'k':
	35	case 'K':
	36	return 1024;
	37	case 'm':
	38	case 'M':
	39	return 1024 * 1024;
	40	case 'g':
	41	case 'G':
	42	return 1024 * 1024 * 1024;
	43	default:
	44	return 1;
	45	}
	46	}
	47
	48	/*
e1f36503	49	* convert string into decimal value, noting any size suffix
cb2c86fd	50	*/
b4692828	51	static int str_to_decimal(const char str, unsigned long long val, int kilo)
cb2c86fd	52	{
cb2c86fd JA	53	int len;
cb2c86fd JA	54
cb2c86fd	55	len = strlen(str);
f90eff5a JA	56	if (!len)
f90eff5a JA	57	return 1;
cb2c86fd JA	58
	59	*val = strtoul(str, NULL, 10);
	60	if (*val == ULONG_MAX && errno == ERANGE)
	61	return 1;
	62
	63	if (kilo)
	64	val = get_mult_bytes(str[len - 1]);
	65	else
	66	val = get_mult_time(str[len - 1]);
	67	return 0;
	68	}
	69
b4692828	70	static int check_str_bytes(const char p, unsigned long long val)
cb2c86fd	71	{
cb2c86fd JA	72	return str_to_decimal(p, val, 1);
	73	}
	74
b4692828	75	static int check_str_time(const char p, unsigned long long val)
cb2c86fd	76	{
cb2c86fd JA	77	return str_to_decimal(p, val, 0);
	78	}
	79
	80	void strip_blank_front(char **p)
	81	{
	82	char s = p;
	83
	84	while (isspace(*s))
	85	s++;
	86	}
	87
	88	void strip_blank_end(char *p)
	89	{
	90	char *s = p + strlen(p) - 1;
	91
	92	while (isspace(s) \|\| iscntrl(s))
	93	s--;
	94
	95	*(s + 1) = '\0';
	96	}
	97
b765a372	98	static int check_range_bytes(const char str, unsigned long val)
cb2c86fd JA	99	{
	100	char suffix;
	101
	102	if (sscanf(str, "%lu%c", val, &suffix) == 2) {
	103	val = get_mult_bytes(suffix);
	104	return 0;
	105	}
	106
	107	if (sscanf(str, "%lu", val) == 1)
	108	return 0;
	109
	110	return 1;
	111	}
	112
b4692828	113	static int check_int(const char p, unsigned int val)
cb2c86fd	114	{
e1f36503 JA	115	if (sscanf(p, "%u", val) == 1)
e1f36503 JA	116	return 0;
cb2c86fd	117
e1f36503 JA	118	return 1;
e1f36503 JA	119	}
cb2c86fd	120
e1f36503 JA	121	static struct fio_option find_option(struct fio_option options,
	122	const char *opt)
	123	{
33963c6c	124	struct fio_option *o = &options[0];
cb2c86fd	125
33963c6c	126	while (o->name) {
e1f36503 JA	127	if (!strcmp(o->name, opt))
e1f36503 JA	128	return o;
cb2c86fd	129
33963c6c JA	130	o++;
33963c6c JA	131	}
cb2c86fd	132
e1f36503	133	return NULL;
cb2c86fd JA	134	}
cb2c86fd JA	135
f90eff5a JA	136	static int __handle_option(struct fio_option o, const char ptr, void *data,
f90eff5a JA	137	int first)
cb2c86fd	138	{
75e6f36f	139	unsigned int il, ilp1, ilp2;
e1f36503	140	unsigned long long ull, *ullp;
75e6f36f	141	unsigned long ul1, ul2;
b4692828	142	char **cp;
e1f36503	143	int ret = 0, is_time = 0;
cb2c86fd	144
e1f36503 JA	145	switch (o->type) {
	146	case FIO_OPT_STR: {
	147	fio_opt_str_fn *fn = o->cb;
cb2c86fd	148
e1f36503 JA	149	ret = fn(data, ptr);
	150	break;
	151	}
	152	case FIO_OPT_STR_VAL_TIME:
	153	is_time = 1;
75e6f36f JA	154	case FIO_OPT_STR_VAL:
75e6f36f JA	155	case FIO_OPT_STR_VAL_INT: {
e1f36503 JA	156	fio_opt_str_val_fn *fn = o->cb;
	157
	158	if (is_time)
	159	ret = check_str_time(ptr, &ull);
	160	else
	161	ret = check_str_bytes(ptr, &ull);
	162
	163	if (ret)
	164	break;
	165
	166	if (o->max_val && ull > o->max_val)
	167	ull = o->max_val;
	168
	169	if (fn)
	170	ret = fn(data, &ull);
	171	else {
75e6f36f	172	if (o->type == FIO_OPT_STR_VAL_INT) {
f90eff5a JA	173	if (first) {
	174	ilp1 = td_var(data, o->off1);
	175	*ilp1 = ull;
	176	if (o->off2) {
	177	ilp1 = td_var(data, o->off2);
	178	*ilp1 = ull;
	179	}
	180	} else if (o->off2) {
	181	ilp1 = td_var(data, o->off2);
	182	*ilp1 = ull;
	183	}
75e6f36f	184	} else {
f90eff5a JA	185	if (first) {
	186	ullp = td_var(data, o->off1);
	187	*ullp = ull;
	188	if (o->off2) {
	189	ullp = td_var(data, o->off2);
	190	*ullp = ull;
	191	}
	192	} else if (o->off2) {
	193	ullp = td_var(data, o->off2);
	194	*ullp = ull;
	195	}
75e6f36f	196	}
e1f36503 JA	197	}
	198	break;
	199	}
	200	case FIO_OPT_STR_STORE:
	201	cp = td_var(data, o->off1);
	202	*cp = strdup(ptr);
	203	break;
	204	case FIO_OPT_RANGE: {
b765a372	205	char tmp[128];
e1f36503 JA	206	char p1, p2;
e1f36503 JA	207
0bbab0e7	208	strncpy(tmp, ptr, sizeof(tmp) - 1);
b765a372 JA	209
b765a372 JA	210	p1 = strchr(tmp, '-');
e1f36503 JA	211	if (!p1) {
	212	ret = 1;
	213	break;
	214	}
	215
	216	p2 = p1 + 1;
	217	*p1 = '\0';
b765a372	218	p1 = tmp;
e1f36503 JA	219
	220	ret = 1;
	221	if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) {
	222	ret = 0;
e1f36503	223	if (ul1 > ul2) {
f90eff5a JA	224	unsigned long foo = ul1;
	225
	226	ul1 = ul2;
	227	ul2 = foo;
	228	}
	229
	230	if (first) {
	231	ilp1 = td_var(data, o->off1);
	232	ilp2 = td_var(data, o->off2);
	233	*ilp1 = ul1;
75e6f36f	234	*ilp2 = ul2;
f90eff5a JA	235	if (o->off3 && o->off4) {
	236	ilp1 = td_var(data, o->off3);
	237	ilp2 = td_var(data, o->off4);
	238	*ilp1 = ul1;
	239	*ilp2 = ul2;
	240	}
	241	} else if (o->off3 && o->off4) {
	242	ilp1 = td_var(data, o->off3);
	243	ilp2 = td_var(data, o->off4);
75e6f36f	244	*ilp1 = ul1;
f90eff5a	245	*ilp2 = ul2;
e1f36503 JA	246	}
	247	}
	248
	249	break;
	250	}
	251	case FIO_OPT_INT: {
	252	fio_opt_int_fn *fn = o->cb;
	253
	254	ret = check_int(ptr, &il);
	255	if (ret)
	256	break;
	257
	258	if (o->max_val && il > o->max_val)
	259	il = o->max_val;
	260
	261	if (fn)
	262	ret = fn(data, &il);
	263	else {
f90eff5a JA	264	if (first \|\| !o->off2)
	265	ilp1 = td_var(data, o->off1);
	266	else
	267	ilp1 = td_var(data, o->off2);
	268
75e6f36f	269	*ilp1 = il;
e1f36503 JA	270	}
	271	break;
	272	}
	273	case FIO_OPT_STR_SET: {
	274	fio_opt_str_set_fn *fn = o->cb;
	275
	276	if (fn)
	277	ret = fn(data);
	278	else {
f90eff5a JA	279	if (first \|\| !o->off2)
	280	ilp1 = td_var(data, o->off1);
	281	else
	282	ilp1 = td_var(data, o->off2);
	283
75e6f36f	284	*ilp1 = 1;
e1f36503 JA	285	}
	286	break;
	287	}
	288	default:
	289	fprintf(stderr, "Bad option type %d\n", o->type);
	290	ret = 1;
	291	}
cb2c86fd	292
e1f36503	293	return ret;
cb2c86fd JA	294	}
cb2c86fd JA	295
f90eff5a JA	296	static int handle_option(struct fio_option o, const char ptr, void *data)
	297	{
	298	const char *ptr2;
	299	int ret;
	300
	301	ret = __handle_option(o, ptr, data, 1);
	302	if (ret)
	303	return ret;
	304
	305	/*
	306	* See if we have a second set of parameters, hidden after a comma
	307	*/
	308	ptr2 = strchr(ptr, ',');
	309	if (!ptr2)
	310	return 0;
	311
	312	ptr2++;
	313	return __handle_option(o, ptr2, data, 0);
	314	}
	315
b4692828 JA	316	int parse_cmd_option(const char opt, const char val,
	317	struct fio_option options, void data)
	318	{
	319	struct fio_option *o;
	320
	321	o = find_option(options, opt);
	322	if (!o) {
	323	fprintf(stderr, "Bad option %s\n", opt);
	324	return 1;
	325	}
	326
b1508cf9 JA	327	if (!handle_option(o, val, data))
	328	return 0;
	329
	330	fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
	331	return 1;
b4692828 JA	332	}
b4692828 JA	333
e1f36503	334	int parse_option(const char opt, struct fio_option options, void *data)
cb2c86fd	335	{
b4692828	336	struct fio_option *o;
e1f36503 JA	337	char pre, post;
	338	char tmp[64];
	339
0bbab0e7	340	strncpy(tmp, opt, sizeof(tmp) - 1);
e1f36503 JA	341
	342	pre = strchr(tmp, '=');
	343	if (pre) {
	344	post = pre;
	345	*pre = '\0';
	346	pre = tmp;
	347	post++;
	348	o = find_option(options, pre);
	349	} else {
	350	o = find_option(options, tmp);
	351	post = NULL;
	352	}
cb2c86fd	353
e1f36503 JA	354	if (!o) {
	355	fprintf(stderr, "Bad option %s\n", tmp);
	356	return 1;
	357	}
	358
b1508cf9 JA	359	if (!handle_option(o, post, data))
	360	return 0;
	361
	362	fprintf(stderr, "fio: failed parsing %s\n", opt);
	363	return 1;
e1f36503	364	}