blob: e9deb3adb543a709c2550e0cf2fc25f0e0a6b52e (
plain)
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
|
/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-05-25 WangQiang the first verion for msh parse
*/
#include <rtthread.h>
#include <ctype.h>
#define forstrloop(str) for (; '\0' != *(str); (str)++)
/**
* This function will check integer.
*
* @param strvalue string
*
* @return true or false
*/
rt_bool_t msh_isint(char *strvalue)
{
if ((RT_NULL == strvalue) || ('\0' == strvalue[0]))
{
return RT_FALSE;
}
if (('+' == *strvalue) || ('-' == *strvalue))
{
strvalue++;
}
forstrloop(strvalue)
{
if (!isdigit((int)(*strvalue)))
{
return RT_FALSE;
}
}
return RT_TRUE;
}
/**
* This function will check hex.
*
* @param strvalue string
*
* @return true or false
*/
rt_bool_t msh_ishex(char *strvalue)
{
int c;
if ((RT_NULL == strvalue) || ('\0' == strvalue[0]))
{
return RT_FALSE;
}
if ('0' != *(strvalue++))
{
return RT_FALSE;
}
if ('x' != *(strvalue++))
{
return RT_FALSE;
}
forstrloop(strvalue)
{
c = tolower(*strvalue);
if (!isxdigit(c))
{
return RT_FALSE;
}
}
return RT_TRUE;
}
/**
* This function will transform for string to hex.
*
* @param strvalue string
*
* @return integer transformed from string
*/
int msh_strtohex(char *strvalue)
{
char c = 0;
int value = 0;
strvalue += 2;
forstrloop(strvalue)
{
value *= 16;
c = tolower(*strvalue);
value += isdigit(c) ? c - '0' : c - 'a' + 10;
}
return value;
}
|
