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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
use std
use "types"
use "parse"
pkg http =
const parseurl : (url : byte[:] -> std.result(url#, err))
const urlfree : (url : url# -> void)
;;
const __init__ = {
var u : url#
u = u
std.fmtinstall(std.typeof(u), urlfmt, [
("p", false)
][:])
}
const urlfmt = {sb, ap, opts
var url : url#
var defaultport
var sep
var showhost
showhost = true
url = std.vanext(ap)
for o : opts
match o
| ("p", ""): showhost = false
| _: std.fatal("unknown param\n")
;;
;;
if showhost
match url.schema
| `Http:
std.sbputs(sb, "http://")
defaultport = 80
| `Https:
std.sbputs(sb, "https://")
defaultport = 443
;;
std.sbputs(sb, url.host)
if url.port != defaultport
std.sbfmt(sb, ":{}", url.port)
;;
;;
std.sbfmt(sb, url.path)
if url.params.len > 0
sep = '?'
for (k, v) : url.params
std.sbfmt(sb, "{}{}={}", sep, k, v)
sep = '&'
;;
;;
}
const parseurl = {url
var schema, host, port, path, params
match parseschema(&url)
| `std.Ok s: schema = s
| `std.Err e: -> `std.Err e
;;
match parsehostname(&url)
| `std.Ok h: host = h
| `std.Err e: -> `std.Err e
;;
match parseport(&url)
| `std.Ok p: port = p
| `std.Err e: -> `std.Err e
;;
match parsepath(&url)
| `std.Ok p: path = p
| `std.Err e: -> `std.Err e
;;
match parseparams(&url)
| `std.Ok p: params = p
| `std.Err e: -> `std.Err e
;;
/* todo: params */
-> `std.Ok std.mk([
.schema=schema,
.host=std.sldup(host),
.port=port,
.path=std.sldup(path),
.params=params,
])
}
const urlfree = {url
std.slfree(url.host)
std.slfree(url.path)
std.free(url)
}
const parseschema = {url
if std.chomp(url, "http://")
-> `std.Ok `Http
elif std.chomp(url, "https://")
-> `std.Err `Eunsupp
else
-> `std.Err `Eproto
;;
}
const parsehostname = {url
if std.chomp(url, "[")
-> ipv6hostname(url)
else
-> hostname(url)
;;
}
const parsepath = {url
var len, p
if url#.len == 0
-> `std.Ok "/"
elif std.decode(url#) == '?'
-> `std.Ok "/"
elif std.decode(url#) == '/'
match std.strfind(url#, "?")
| `std.Some i: len = i
| `std.None: len = url#.len
;;
p = url#[:len]
url# = url#[len:]
-> `std.Ok p
else
-> `std.Err `Egarbled
;;
}
const parseparams = {url
var kvp : byte[:][2]
var params
if url#.len == 0
-> `std.Ok [][:]
;;
match std.decode(url#)
| '?': (_, url#) = std.strstep(url#)
| _: -> `std.Err `Egarbled
;;
params = [][:]
for sp : std.bysplit(url#, "&")
if std.bstrsplit(kvp[:], sp, "=").len != 2
-> `std.Err `Egarbled
;;
std.slpush(¶ms, (std.sldup(kvp[0]), std.sldup(kvp[1])))
;;
-> `std.Ok params
}
const hostname = {url
var len, host
len = 0
for c : std.bychar(url#)
match c
| ':': break
| '/': break
| '?': break
| chr:
if ishostchar(chr)
len += std.charlen(chr)
else
-> `std.Err `Egarbled
;;
;;
;;
host = url#[:len]
url# = url#[len:]
-> `std.Ok host
}
const ipv6hostname = {url -> std.result(byte[:], err)
var ip
match std.strfind(url#, "]")
| `std.None: -> `std.Err `Egarbled
| `std.Some idx:
ip = url#[:idx]
url# = url#[idx+1:]
match std.ip6parse(url#[:idx])
| `std.Some _: -> `std.Ok ip
| `std.None: -> `std.Err `Egarbled
;;
;;
}
const parseport = {url
if std.chomp(url, ":")
match parsenumber(url, 10)
| `std.None: -> `std.Err `Egarbled
| `std.Some n:
if n > 65535
-> `std.Err `Egarbled
else
-> `std.Ok (n : uint16)
;;
;;
else
-> `std.Ok 80
;;
}
const ishostchar = {c
if !std.isascii(c)
-> false
else
-> std.isalnum(c) || unreserved(c) || subdelim(c)
;;
}
const unreserved = {c
-> c == '.' || c == '-' || c == '_' || c == '~'
}
const subdelim = {c
-> c == '.' || c == '-' || c == '_' || c == '~' || c == '!' || \
c == '$' || c == '&' || c == '\'' || c == '(' || c == ')' || \
c == '*' || c == '+' || c == ',' || c == ';' || c == '='
}
|
