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
|
/*
* Variable implementation in finsh shell.
*
* COPYRIGHT (C) 2006 - 2013, RT-Thread Development Team
*
* This file is part of RT-Thread (http://www.rt-thread.org)
* Maintainer: bernard.xiong <bernard.xiong at gmail.com>
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2010-03-22 Bernard first version
* 2012-04-27 Bernard fixed finsh_var_delete issue which
* is found by Grissiom.
*/
#include <finsh.h>
#include "finsh_var.h"
struct finsh_var global_variable[FINSH_VARIABLE_MAX];
struct finsh_sysvar_item* global_sysvar_list;
int finsh_var_init()
{
memset(global_variable, 0, sizeof(global_variable));
return 0;
}
int finsh_var_insert(const char* name, int type)
{
int i, empty;
empty = -1;
for (i = 0; i < FINSH_VARIABLE_MAX; i ++)
{
/* there is a same name variable exist. */
if (strncmp(global_variable[i].name, name, FINSH_NAME_MAX) == 0)
return -1;
if (global_variable[i].type == finsh_type_unknown && empty == -1)
{
empty = i;
}
}
/* there is no empty entry */
if (empty == -1) return -1;
/* insert entry */
strncpy(global_variable[empty].name, name, FINSH_NAME_MAX);
global_variable[empty].type = type;
/* return the offset */
return empty;
}
int finsh_var_delete(const char* name)
{
int i;
for (i = 0; i < FINSH_VARIABLE_MAX; i ++)
{
if (strncmp(global_variable[i].name, name, FINSH_NAME_MAX) == 0)
break;
}
/* can't find variable */
if (i == FINSH_VARIABLE_MAX) return -1;
memset(&global_variable[i], 0, sizeof(struct finsh_var));
return 0;
}
struct finsh_var* finsh_var_lookup(const char* name)
{
int i;
for (i = 0; i < FINSH_VARIABLE_MAX; i ++)
{
if (strncmp(global_variable[i].name, name, FINSH_NAME_MAX) == 0)
break;
}
/* can't find variable */
if (i == FINSH_VARIABLE_MAX) return NULL;
return &global_variable[i];
}
#ifdef RT_USING_HEAP
void finsh_sysvar_append(const char* name, uint8_t type, void* var_addr)
{
/* create a sysvar */
struct finsh_sysvar_item* item;
item = (struct finsh_sysvar_item*) rt_malloc (sizeof(struct finsh_sysvar_item));
if (item != NULL)
{
item->next = NULL;
item->sysvar.name = rt_strdup(name);
item->sysvar.type = type;
item->sysvar.var = var_addr;
if (global_sysvar_list == NULL)
{
global_sysvar_list = item;
}
else
{
item->next = global_sysvar_list;
global_sysvar_list = item;
}
}
}
#endif
struct finsh_sysvar* finsh_sysvar_lookup(const char* name)
{
struct finsh_sysvar* index;
struct finsh_sysvar_item* item;
for (index = _sysvar_table_begin;
index < _sysvar_table_end;
FINSH_NEXT_SYSVAR(index))
{
if (strcmp(index->name, name) == 0)
return index;
}
/* find in sysvar list */
item = global_sysvar_list;
while (item != NULL)
{
if (strncmp(item->sysvar.name, name, strlen(name)) == 0)
{
return &(item->sysvar);
}
/* move to next item */
item = item->next;
}
/* can't find variable */
return NULL;
}
|
