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
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
//! Simple command-line argument parser.
//!
//! No external dependencies. Supports `--flag`, `--key value`, `-v` (count),
//! and positional arguments.
use std::collections::HashMap;
/// Parsed command-line arguments.
pub struct Args {
pub flags: HashMap<String, String>,
pub positional: Vec<String>,
pub verbosity: u8,
pub quiet: u8,
}
impl Args {
/// Parse command-line arguments (skipping argv[0]).
pub fn parse() -> Self {
Self::parse_from(std::env::args().skip(1).collect())
}
/// Parse from a list of argument strings.
pub fn parse_from(args: Vec<String>) -> Self {
let mut flags = HashMap::new();
let mut positional = Vec::new();
let mut verbosity: u8 = 0;
let mut quiet: u8 = 0;
let mut iter = args.into_iter();
while let Some(arg) = iter.next() {
if arg == "--" {
// Everything after -- is positional
positional.extend(iter);
break;
} else if arg.starts_with("--") {
let key = arg[2..].to_string();
// Check for --key=value syntax
if let Some(eq_pos) = key.find('=') {
let (k, v) = key.split_at(eq_pos);
flags.insert(k.to_string(), v[1..].to_string());
} else {
// Boolean flags that don't take values
match key.as_str() {
"version" | "exampleconfig" | "help" | "stdin" | "stdout" | "force"
| "blackholed" | "daemon" | "disable-auth" | "json" | "value-only"
| "keys-only" => {
flags.insert(key, "true".into());
}
_ => {
// Next arg is the value
if let Some(val) = iter.next() {
flags.insert(key, val);
} else {
flags.insert(key, "true".into());
}
}
}
}
} else if arg.starts_with('-') && arg.len() > 1 {
// Short flags
let chars: Vec<char> = arg[1..].chars().collect();
for &c in &chars {
match c {
'v' => verbosity = verbosity.saturating_add(1),
'q' => quiet = quiet.saturating_add(1),
'a' | 'r' | 'j' | 'P' | 'D' | 'l' | 'f' | 'A' => {
flags.insert(c.to_string(), "true".into());
}
'h' => {
flags.insert("help".into(), "true".into());
}
_ => {
// Short flag that may take a value: -c /path, -s rate
// Only consume next arg if it doesn't look like a flag
if chars.len() == 1 {
let next_is_value = iter
.as_slice()
.first()
.map(|s| !s.starts_with('-') || s == "-")
.unwrap_or(false);
if next_is_value {
let val = iter.next().unwrap();
flags.insert(c.to_string(), val);
} else {
flags.insert(c.to_string(), "true".into());
}
} else {
flags.insert(c.to_string(), "true".into());
}
}
}
}
} else {
positional.push(arg);
}
}
Args {
flags,
positional,
verbosity,
quiet,
}
}
/// Get a flag value by long or short name.
pub fn get(&self, key: &str) -> Option<&str> {
self.flags.get(key).map(|s| s.as_str())
}
/// Check if a flag is set.
pub fn has(&self, key: &str) -> bool {
self.flags.contains_key(key)
}
/// Get config path from --config or -c flag.
pub fn config_path(&self) -> Option<&str> {
self.get("config").or_else(|| self.get("c"))
}
}
#[cfg(test)]
mod tests {
use super::*;
fn args(s: &[&str]) -> Args {
Args::parse_from(s.iter().map(|s| s.to_string()).collect())
}
#[test]
fn parse_config_and_verbose() {
let a = args(&["--config", "/path/to/config", "-vv", "-s"]);
assert_eq!(a.config_path(), Some("/path/to/config"));
assert_eq!(a.verbosity, 2);
assert!(a.has("s"));
}
#[test]
fn parse_version() {
let a = args(&["--version"]);
assert!(a.has("version"));
}
#[test]
fn parse_short_flag_with_value() {
// -t with a non-flag value captures it (used by probe -t SECS, http -t TOKEN)
let a = args(&["-t", "abcd1234"]);
assert_eq!(a.get("t"), Some("abcd1234"));
}
#[test]
fn parse_short_flag_boolean() {
// -t alone is boolean (used by status -t, path -t)
let a = args(&["-t"]);
assert!(a.has("t"));
assert_eq!(a.get("t"), Some("true"));
}
#[test]
fn parse_short_config() {
let a = args(&["-c", "/my/config"]);
assert_eq!(a.config_path(), Some("/my/config"));
}
#[test]
fn parse_quiet() {
let a = args(&["-qq"]);
assert_eq!(a.quiet, 2);
}
#[test]
fn parse_new_boolean_flags() {
let a = args(&["-l", "-f", "-m", "-A"]);
assert!(a.has("l"));
assert!(a.has("f"));
assert!(a.has("m"));
assert!(a.has("A"));
}
#[test]
fn parse_long_boolean_flags() {
let a = args(&[
"--stdin",
"--stdout",
"--force",
"--blackholed",
"--json",
"--value-only",
"--keys-only",
]);
assert!(a.has("stdin"));
assert!(a.has("stdout"));
assert!(a.has("force"));
assert!(a.has("blackholed"));
assert!(a.has("json"));
assert!(a.has("value-only"));
assert!(a.has("keys-only"));
}
#[test]
fn parse_exampleconfig() {
let a = args(&["--exampleconfig"]);
assert!(a.has("exampleconfig"));
}
#[test]
fn parse_short_d_boolean() {
// -d alone is boolean (used by http -d for daemon mode)
let a = args(&["-d"]);
assert!(a.has("d"));
assert_eq!(a.get("d"), Some("true"));
}
#[test]
fn parse_short_d_with_value() {
// -d with a value (used by id -d FILE, path -d HASH)
let a = args(&["-d", "file.enc"]);
assert_eq!(a.get("d"), Some("file.enc"));
}
#[test]
fn parse_daemon_long() {
let a = args(&["--daemon"]);
assert!(a.has("daemon"));
}
#[test]
fn parse_disable_auth() {
let a = args(&["--disable-auth"]);
assert!(a.has("disable-auth"));
}
#[test]
fn parse_help() {
let a = args(&["--help"]);
assert!(a.has("help"));
let a = args(&["-h"]);
assert!(a.has("help"));
}
#[test]
fn parse_short_p_with_value() {
// -p with a value (used by http -p PORT)
let a = args(&["-p", "8080"]);
assert_eq!(a.get("p"), Some("8080"));
}
#[test]
fn parse_short_p_boolean() {
// -p alone is boolean (used by id -p for print public key)
let a = args(&["-p"]);
assert!(a.has("p"));
}
#[test]
fn parse_short_x_with_value() {
// -x with a value (used by path -x HASH)
let a = args(&["-x", "abcd1234"]);
assert_eq!(a.get("x"), Some("abcd1234"));
}
#[test]
fn parse_short_x_boolean() {
// -x alone is boolean (used by id -x for export hex)
let a = args(&["-x"]);
assert!(a.has("x"));
}
#[test]
fn flag_with_value_vs_boolean() {
// -s with a non-flag value should capture it
let a = args(&["-s", "rate"]);
assert_eq!(a.get("s"), Some("rate"));
// -s followed by another flag should be boolean
let a = args(&["-s", "-v"]);
assert!(a.has("s"));
assert_eq!(a.get("s"), Some("true"));
assert_eq!(a.verbosity, 1);
// -m with a value
let a = args(&["-m", "5"]);
assert_eq!(a.get("m"), Some("5"));
// -m alone (boolean)
let a = args(&["-m"]);
assert!(a.has("m"));
// -B with a hash value
let a = args(&["-B", "abcdef1234567890"]);
assert_eq!(a.get("B"), Some("abcdef1234567890"));
// -B alone (boolean for base32 mode)
let a = args(&["-B"]);
assert!(a.has("B"));
}
}