[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);

	*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)
{
	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) {
				ilp1 = td_var(data, o->off1);
				*ilp1 = 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 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;
			ilp1 = td_var(data, o->off1);
			ilp2 = td_var(data, o->off2);
			if (ul1 > ul2) {
				*ilp1 = ul2;
				*ilp2 = ul1;
			} else {
				*ilp2 = ul2;
				*ilp1 = 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 {
			ilp1 = td_var(data, o->off1);
			*ilp1 = il;
		}
		break;
	}
	case FIO_OPT_STR_SET: {
		fio_opt_str_set_fn *fn = o->cb;

		if (fn)
			ret = fn(data);
		else {
			ilp1 = td_var(data, o->off1);
			*ilp1 = 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;
	}

	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 JA	55	len = strlen(str);
	56
	57	*val = strtoul(str, NULL, 10);
	58	if (*val == ULONG_MAX && errno == ERANGE)
	59	return 1;
	60
	61	if (kilo)
	62	val = get_mult_bytes(str[len - 1]);
	63	else
	64	val = get_mult_time(str[len - 1]);
	65	return 0;
	66	}
	67
b4692828	68	static int check_str_bytes(const char p, unsigned long long val)
cb2c86fd	69	{
cb2c86fd JA	70	return str_to_decimal(p, val, 1);
	71	}
	72
b4692828	73	static int check_str_time(const char p, unsigned long long val)
cb2c86fd	74	{
cb2c86fd JA	75	return str_to_decimal(p, val, 0);
	76	}
	77
	78	void strip_blank_front(char **p)
	79	{
	80	char s = p;
	81
	82	while (isspace(*s))
	83	s++;
	84	}
	85
	86	void strip_blank_end(char *p)
	87	{
	88	char *s = p + strlen(p) - 1;
	89
	90	while (isspace(s) \|\| iscntrl(s))
	91	s--;
	92
	93	*(s + 1) = '\0';
	94	}
	95
b765a372	96	static int check_range_bytes(const char str, unsigned long val)
cb2c86fd JA	97	{
	98	char suffix;
	99
	100	if (sscanf(str, "%lu%c", val, &suffix) == 2) {
	101	val = get_mult_bytes(suffix);
	102	return 0;
	103	}
	104
	105	if (sscanf(str, "%lu", val) == 1)
	106	return 0;
	107
	108	return 1;
	109	}
	110
b4692828	111	static int check_int(const char p, unsigned int val)
cb2c86fd	112	{
e1f36503 JA	113	if (sscanf(p, "%u", val) == 1)
e1f36503 JA	114	return 0;
cb2c86fd	115
e1f36503 JA	116	return 1;
e1f36503 JA	117	}
cb2c86fd	118
e1f36503 JA	119	static struct fio_option find_option(struct fio_option options,
	120	const char *opt)
	121	{
33963c6c	122	struct fio_option *o = &options[0];
cb2c86fd	123
33963c6c	124	while (o->name) {
e1f36503 JA	125	if (!strcmp(o->name, opt))
e1f36503 JA	126	return o;
cb2c86fd	127
33963c6c JA	128	o++;
33963c6c JA	129	}
cb2c86fd	130
e1f36503	131	return NULL;
cb2c86fd JA	132	}
cb2c86fd JA	133
b4692828	134	static int handle_option(struct fio_option o, const char ptr, void *data)
cb2c86fd	135	{
75e6f36f	136	unsigned int il, ilp1, ilp2;
e1f36503	137	unsigned long long ull, *ullp;
75e6f36f	138	unsigned long ul1, ul2;
b4692828	139	char **cp;
e1f36503	140	int ret = 0, is_time = 0;
cb2c86fd	141
e1f36503 JA	142	switch (o->type) {
	143	case FIO_OPT_STR: {
	144	fio_opt_str_fn *fn = o->cb;
cb2c86fd	145
e1f36503 JA	146	ret = fn(data, ptr);
	147	break;
	148	}
	149	case FIO_OPT_STR_VAL_TIME:
	150	is_time = 1;
75e6f36f JA	151	case FIO_OPT_STR_VAL:
75e6f36f JA	152	case FIO_OPT_STR_VAL_INT: {
e1f36503 JA	153	fio_opt_str_val_fn *fn = o->cb;
	154
	155	if (is_time)
	156	ret = check_str_time(ptr, &ull);
	157	else
	158	ret = check_str_bytes(ptr, &ull);
	159
	160	if (ret)
	161	break;
	162
	163	if (o->max_val && ull > o->max_val)
	164	ull = o->max_val;
	165
	166	if (fn)
	167	ret = fn(data, &ull);
	168	else {
75e6f36f JA	169	if (o->type == FIO_OPT_STR_VAL_INT) {
	170	ilp1 = td_var(data, o->off1);
	171	*ilp1 = ull;
	172	} else {
	173	ullp = td_var(data, o->off1);
	174	*ullp = ull;
	175	}
e1f36503 JA	176	}
	177	break;
	178	}
	179	case FIO_OPT_STR_STORE:
	180	cp = td_var(data, o->off1);
	181	*cp = strdup(ptr);
	182	break;
	183	case FIO_OPT_RANGE: {
b765a372	184	char tmp[128];
e1f36503 JA	185	char p1, p2;
e1f36503 JA	186
0bbab0e7	187	strncpy(tmp, ptr, sizeof(tmp) - 1);
b765a372 JA	188
b765a372 JA	189	p1 = strchr(tmp, '-');
e1f36503 JA	190	if (!p1) {
	191	ret = 1;
	192	break;
	193	}
	194
	195	p2 = p1 + 1;
	196	*p1 = '\0';
b765a372	197	p1 = tmp;
e1f36503 JA	198
	199	ret = 1;
	200	if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) {
	201	ret = 0;
75e6f36f JA	202	ilp1 = td_var(data, o->off1);
75e6f36f JA	203	ilp2 = td_var(data, o->off2);
e1f36503	204	if (ul1 > ul2) {
75e6f36f JA	205	*ilp1 = ul2;
75e6f36f JA	206	*ilp2 = ul1;
e1f36503	207	} else {
75e6f36f JA	208	*ilp2 = ul2;
75e6f36f JA	209	*ilp1 = ul1;
e1f36503 JA	210	}
	211	}
	212
	213	break;
	214	}
	215	case FIO_OPT_INT: {
	216	fio_opt_int_fn *fn = o->cb;
	217
	218	ret = check_int(ptr, &il);
	219	if (ret)
	220	break;
	221
	222	if (o->max_val && il > o->max_val)
	223	il = o->max_val;
	224
	225	if (fn)
	226	ret = fn(data, &il);
	227	else {
75e6f36f JA	228	ilp1 = td_var(data, o->off1);
75e6f36f JA	229	*ilp1 = il;
e1f36503 JA	230	}
	231	break;
	232	}
	233	case FIO_OPT_STR_SET: {
	234	fio_opt_str_set_fn *fn = o->cb;
	235
	236	if (fn)
	237	ret = fn(data);
	238	else {
75e6f36f JA	239	ilp1 = td_var(data, o->off1);
75e6f36f JA	240	*ilp1 = 1;
e1f36503 JA	241	}
	242	break;
	243	}
	244	default:
	245	fprintf(stderr, "Bad option type %d\n", o->type);
	246	ret = 1;
	247	}
cb2c86fd	248
e1f36503	249	return ret;
cb2c86fd JA	250	}
cb2c86fd JA	251
b4692828 JA	252	int parse_cmd_option(const char opt, const char val,
	253	struct fio_option options, void data)
	254	{
	255	struct fio_option *o;
	256
	257	o = find_option(options, opt);
	258	if (!o) {
	259	fprintf(stderr, "Bad option %s\n", opt);
	260	return 1;
	261	}
	262
b1508cf9 JA	263	if (!handle_option(o, val, data))
	264	return 0;
	265
	266	fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
	267	return 1;
b4692828 JA	268	}
b4692828 JA	269
e1f36503	270	int parse_option(const char opt, struct fio_option options, void *data)
cb2c86fd	271	{
b4692828	272	struct fio_option *o;
e1f36503 JA	273	char pre, post;
	274	char tmp[64];
	275
0bbab0e7	276	strncpy(tmp, opt, sizeof(tmp) - 1);
e1f36503 JA	277
	278	pre = strchr(tmp, '=');
	279	if (pre) {
	280	post = pre;
	281	*pre = '\0';
	282	pre = tmp;
	283	post++;
	284	o = find_option(options, pre);
	285	} else {
	286	o = find_option(options, tmp);
	287	post = NULL;
	288	}
cb2c86fd	289
e1f36503 JA	290	if (!o) {
	291	fprintf(stderr, "Bad option %s\n", tmp);
	292	return 1;
	293	}
	294
b1508cf9 JA	295	if (!handle_option(o, post, data))
	296	return 0;
	297
	298	fprintf(stderr, "fio: failed parsing %s\n", opt);
	299	return 1;
e1f36503	300	}