blob: 39538c99a9620aed56aca43744522f5f93fa27fd (
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
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
|
#ifndef RISCV_CONFIG_STRING_H
#define RISCV_CONFIG_STRING_H
#include <stddef.h>
#include <stdint.h>
static const char* skip_whitespace(const char* str)
{
while (*str && *str <= ' ')
str++;
return str;
}
static const char* skip_string(const char* str)
{
while (*str && *str++ != '"')
;
return str;
}
static int is_hex(char ch)
{
return (ch >= '0' && ch <= '9') || (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F');
}
static int parse_hex(char ch)
{
return (ch >= '0' && ch <= '9') ? ch - '0' :
(ch >= 'a' && ch <= 'f') ? ch - 'a' + 10 :
ch - 'A' + 10;
}
static const char* skip_key(const char* str)
{
while (*str >= 35 && *str <= 122 && *str != ';')
str++;
return str;
}
typedef struct {
const char* start;
const char* end;
} query_result;
static query_result query_config_string(const char* str, const char* k)
{
size_t ksize = 0;
while (k[ksize] && k[ksize] != '{')
ksize++;
int last = !k[ksize];
query_result res = {0, 0};
while (1) {
const char* key_start = str = skip_whitespace(str);
const char* key_end = str = skip_key(str);
int match = (size_t)(key_end - key_start) == ksize;
if (match)
for (size_t i = 0; i < ksize; i++)
if (key_start[i] != k[i])
match = 0;
const char* value_start = str = skip_whitespace(str);
while (*str != ';') {
if (!*str) {
return res;
} else if (*str == '"') {
str = skip_string(str+1);
} else if (*str == '{') {
const char* search_key = match && !last ? k + ksize + 1 : "";
query_result inner_res = query_config_string(str + 1, search_key);
if (inner_res.start)
return inner_res;
str = inner_res.end + 1;
} else {
str = skip_key(str);
}
str = skip_whitespace(str);
}
res.end = str;
if (match && last) {
res.start = value_start;
return res;
}
str = skip_whitespace(str+1);
if (*str == '}') {
res.end = str;
return res;
}
}
}
static void parse_string(query_result r, char* buf)
{
if (r.start < r.end) {
if (*r.start == '"') {
for (const char* p = r.start + 1; p < r.end && *p != '"'; p++) {
char ch = p[0];
if (ch == '\\' && p[1] == 'x' && is_hex(p[2])) {
ch = parse_hex(p[2]);
if (is_hex(p[3])) {
ch = (ch << 4) + parse_hex(p[3]);
p++;
}
p += 2;
}
*buf++ = ch;
}
} else {
for (const char* p = r.start; p < r.end && *p > ' '; p++)
*buf++ = *p;
}
}
*buf = 0;
}
#define get_string(name, search_res) \
char name[(search_res).end - (search_res).start + 1]; \
parse_string(search_res, name)
static uint64_t __get_uint_hex(const char* s)
{
uint64_t res = 0;
while (*s) {
if (is_hex(*s))
res = (res << 4) + parse_hex(*s);
else if (*s != '_')
break;
s++;
}
return res;
}
static uint64_t __get_uint_dec(const char* s)
{
uint64_t res = 0;
while (*s) {
if (*s >= '0' && *s <= '9')
res = res * 10 + (*s - '0');
else
break;
s++;
}
return res;
}
static uint64_t __get_uint(const char* s)
{
if (s[0] == '0' && s[1] == 'x')
return __get_uint_hex(s+2);
return __get_uint_dec(s);
}
static inline uint64_t get_uint(query_result res)
{
get_string(s, res);
return __get_uint(s);
}
static inline int64_t get_sint(query_result res)
{
get_string(s, res);
if (s[0] == '-')
return -__get_uint(s+1);
return __get_uint(s);
}
#endif
|
