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comparison src/core/ngx_parse.c @ 157:70b36c805682

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nginx-0.0.1-2003-10-23-19:54:19 import
author Igor Sysoev <igor@sysoev.ru>
date Thu, 23 Oct 2003 15:54:19 +0000
parents
children 2357fa41738a
comparison
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156:afc333135a6b 157:70b36c805682
1
2 #include <ngx_config.h>
3 #include <ngx_core.h>
4
5
6 int ngx_parse_size(ngx_str_t *line)
7 {
8 int len, scale, size;
9 char last;
10
11 len = line->len;
12 last = line->data[len - 1];
13
14 switch (last) {
15 case 'K':
16 case 'k':
17 len--;
18 scale = 1024;
19 break;
20
21 case 'M':
22 case 'm':
23 len--;
24 scale = 1024 * 1024;
25 break;
26
27 default:
28 scale = 1;
29 }
30
31 size = ngx_atoi(line->data, len);
32 if (size == NGX_ERROR) {
33 return NGX_ERROR;
34 }
35
36 size *= scale;
37
38 return size;
39 }
40
41
42 int ngx_parse_time(ngx_str_t *line, int sec)
43 {
44 int value, total, len, scale;
45 u_int max, i;
46 char *start, last;
47 enum {
48 st_start = 0,
49 st_year,
50 st_month,
51 st_week,
52 st_day,
53 st_hour,
54 st_min,
55 st_sec,
56 st_msec,
57 st_last
58 } step;
59
60
61 start = line->data;
62 len = 0;
63 total = 0;
64 step = sec ? st_start : st_month;
65
66 for (i = 0; /* void */ ; i++) {
67
68 if (i < line->len) {
69 if (line->data[i] != ' ') {
70 len++;
71 continue;
72 }
73
74 if (line->data[i] == ' ' && len == 0) {
75 start = &line->data[i + 1];
76 continue;
77 }
78 }
79
80 if (len == 0) {
81 break;
82 }
83
84 last = line->data[i - 1];
85
86 switch (last) {
87 case 'y':
88 if (step > st_start) {
89 return NGX_ERROR;
90 }
91 step = st_year;
92 len--;
93 max = 68;
94 scale = 60 * 60 * 24 * 365;
95 break;
96
97 case 'M':
98 if (step > st_year) {
99 return NGX_ERROR;
100 }
101 step = st_month;
102 len--;
103 max = 828;
104 scale = 60 * 60 * 24 * 30;
105 break;
106
107 case 'w':
108 if (step > st_month) {
109 return NGX_ERROR;
110 }
111 step = st_week;
112 len--;
113 max = 3550;
114 scale = 60 * 60 * 24 * 7;
115 break;
116
117 case 'd':
118 if (step > st_week) {
119 return NGX_ERROR;
120 }
121 step = st_day;
122 len--;
123 max = 24855;
124 scale = 60 * 60 * 24;
125 break;
126
127 case 'h':
128 if (step > st_day) {
129 return NGX_ERROR;
130 }
131 step = st_hour;
132 len--;
133 max = 596523;
134 scale = 60 * 60;
135 break;
136
137 case 'm':
138 if (step > st_hour) {
139 return NGX_ERROR;
140 }
141 step = st_min;
142 len--;
143 max = 35791394;
144 scale = 60;
145 break;
146
147 case 's':
148 len--;
149
150 if (line->data[i - 2] == 'm') {
151 if (sec || step > st_sec) {
152 return NGX_ERROR;
153 }
154 step = st_msec;
155 len--;
156 max = 2147483647;
157 scale = 1;
158 break;
159 }
160
161 if (step > st_min) {
162 return NGX_ERROR;
163 }
164
165 step = st_sec;
166 max = 2147483647;
167 scale = 1;
168 break;
169
170 default:
171 step = st_last;
172 max = 2147483647;
173 scale = 1;
174 }
175
176 value = ngx_atoi(start, len);
177 if (value == NGX_ERROR) {
178 return NGX_ERROR;
179 }
180
181 if (step != st_msec && !sec) {
182 scale *= 1000;
183 max /= 1000;
184 }
185
186 if ((u_int) value > max) {
187 return NGX_PARSE_LARGE_TIME;
188 }
189
190 total += value * scale;
191
192 if ((u_int) total > 2147483647) {
193 return NGX_PARSE_LARGE_TIME;
194 }
195
196 if (i >= line->len) {
197 break;
198 }
199
200 len = 0;
201 start = &line->data[i + 1];
202 }
203
204 return total;
205 }