src/libs/zbxcommon/misc.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215

#include "common.h"

#include <stdlib.h>
#include <math.h>

/******************************************************************************
 *                                                                            *
 * Function: calculate_item_nextcheck                                         *
 *                                                                            *
 * Purpose: calculate nextcheck timespamp for item                            *
 *                                                                            *
 * Parameters: delay - item's refresh rate in sec                             *
 *             now - current timestamp                                        *
 *                                                                            *
 * Return value: nextcheck value                                              *
 *                                                                            *
 * Author: Alexei Vladishev                                                   *
 *                                                                            *
 * Comments: Old algorithm: now+delay                                         *
 *           New one: preserve period, if delay==5, nextcheck = 0,5,10,15,... *
 *                                                                            *
 ******************************************************************************/
int	calculate_item_nextcheck(int delay, int now)
{
	int i;

	i=delay*(int)(now/delay);

	while(i<=now)	i+=delay;

	return i;
}

/******************************************************************************
 *                                                                            *
 * Function: cmp_double                                                       *
 *                                                                            *
 * Purpose: compares two float values                                         *
 *                                                                            *
 * Parameters: a,b - floats to compare                                        *
 *                                                                            *
 * Return value:  0 - the values are equal                                    *
 *                1 - otherwise                                               *
 *                                                                            *
 * Author: Alexei Vladishev                                                   *
 *                                                                            *
 * Comments: equal == differs less than 0.000001                              *
 *                                                                            *
 ******************************************************************************/
int	cmp_double(double a,double b)
{
	if(fabs(a-b)<0.000001)
	{
		return	0;
	}
	return	1;
}

/******************************************************************************
 *                                                                            *
 * Function: is_double_prefix                                                 *
 *                                                                            *
 * Purpose: check if the string is float                                      *
 *                                                                            *
 * Parameters: c - string to check                                            *
 *                                                                            *
 * Return value:  SUCCEED - the string is float                               *
 *                FAIL - otherwise                                            *
 *                                                                            *
 * Author: Alexei Vladishev                                                   *
 *                                                                            *
 * Comments: the functions support prefixes K,M,G                             *
 *                                                                            *
 ******************************************************************************/
int	is_double_prefix(char *c)
{
	int i;
	int dot=-1;

	for(i=0;c[i]!=0;i++)
	{
		if((c[i]>='0')&&(c[i]<='9'))
		{
			continue;
		}

		if((c[i]=='.')&&(dot==-1))
		{
			dot=i;

			if((dot!=0)&&(dot!=(int)strlen(c)-1))
			{
				continue;
			}
		}
		/* Last digit is prefix 'K', 'M', 'G' */
		if( ((c[i]=='K')||(c[i]=='M')||(c[i]=='G')) && (i == (int)strlen(c)-1))
		{
			continue;
		}

		return FAIL;
	}
	return SUCCEED;
}

/******************************************************************************
 *                                                                            *
 * Function: is_double                                                        *
 *                                                                            *
 * Purpose: check if the string is float                                      *
 *                                                                            *
 * Parameters: c - string to check                                            *
 *                                                                            *
 * Return value:  SUCCEED - the string is float                               *
 *                FAIL - otherwise                                            *
 *                                                                            *
 * Author: Alexei Vladishev                                                   *
 *                                                                            *
 * Comments:                                                                  *
 *                                                                            *
 ******************************************************************************/
int	is_double(char *c)
{
	int i;
	int dot=-1;

	for(i=0;c[i]!=0;i++)
	{
		if((c[i]>='0')&&(c[i]<='9'))
		{
			continue;
		}

		if((c[i]=='.')&&(dot==-1))
		{
			dot=i;

			if((dot!=0)&&(dot!=(int)strlen(c)-1))
			{
				continue;
			}
		}

		return FAIL;
	}
	return SUCCEED;
}

/******************************************************************************
 *                                                                            *
 * Function: is_uint                                                          *
 *                                                                            *
 * Purpose: check if the string is unsigned integer                           *
 *                                                                            *
 * Parameters: c - string to check                                            *
 *                                                                            *
 * Return value:  SUCCEED - the string is unsigned integer                    *
 *                FAIL - otherwise                                            *
 *                                                                            *
 * Author: Alexei Vladishev                                                   *
 *                                                                            *
 * Comments:                                                                  *
 *                                                                            *
 ******************************************************************************/
int	is_uint(char *c)
{
	int i;

	for(i=0;c[i]!=0;i++)
	{
		if((c[i]>='0')&&(c[i]<='9'))
		{
			continue;
		}
		return FAIL;
	}

	return SUCCEED;
}

int	set_result_type(AGENT_RESULT *result, int value_type, char *c)
{
	int ret = FAIL;

	if(value_type == ITEM_VALUE_TYPE_UINT64)
	{
		del_zeroes(c);
		if(is_uint(c) == SUCCEED)
		{
			SET_UI64_RESULT(result, atoll(c));
			ret = SUCCEED;
		}
	}
	else if(value_type == ITEM_VALUE_TYPE_FLOAT)
	{
		if(is_double(c) == SUCCEED)
		{
			SET_DBL_RESULT(result, atof(c));
			ret = SUCCEED;
		}
	}
	else if(value_type == ITEM_VALUE_TYPE_STR)
	{
		SET_STR_RESULT(result, strdup(c));
		ret = SUCCEED;
	}
	else if(value_type == ITEM_VALUE_TYPE_LOG)
	{
		SET_STR_RESULT(result, strdup(c));
		ret = SUCCEED;
	}

	return ret;
}