getprop.c revision a8d1afb3e91b043fcd303a40ca4ac9293bbd2781 
1#include <stdio.h>
2#include <stdlib.h>
3
4#include <cutils/properties.h>
5
6#include <sys/system_properties.h>
7#include "dynarray.h"
8
9static void record_prop(const char* key, const char* name, void* opaque)
10{
11    strlist_t* list = opaque;
12    char temp[PROP_VALUE_MAX + PROP_NAME_MAX + 16];
13    snprintf(temp, sizeof temp, "[%s] [%s]", key, name);
14    strlist_append_dup(list, temp);
15}
16
17static void list_properties(void)
18{
19    strlist_t  list[1] = { STRLIST_INITIALIZER };
20
21    /* Record properties in the string list */
22    (void)property_list(record_prop, list);
23
24    /* Sort everything */
25    strlist_sort(list);
26
27    /* print everything */
28    STRLIST_FOREACH(list, str, printf("%s\n", str));
29
30    /* voila */
31    strlist_done(list);
32}
33
34int __system_property_wait(prop_info *pi);
35
36int getprop_main(int argc, char *argv[])
37{
38    int n = 0;
39
40    if (argc == 1) {
41        list_properties();
42    } else {
43        char value[PROPERTY_VALUE_MAX];
44        char *default_value;
45        if(argc > 2) {
46            default_value = argv[2];
47        } else {
48            default_value = "";
49        }
50
51        property_get(argv[1], value, default_value);
52        printf("%s\n", value);
53    }
54    return 0;
55}
56