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
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
//! Zsh completion script emitter.
use super::*;
pub(super) fn emit_zsh(data: &CompletionData) -> String {
let mut s = String::new();
s.push_str("#compdef fdl\n");
s.push_str("# fdl zsh completion (generated)\n");
s.push_str("# eval \"$(fdl completions zsh)\"\n");
// Helper: walk up from $PWD looking for fdl.yml, then enumerate
// sibling fdl.<env>.yml overlays. Runtime detection so a single
// installed completion script works across projects and edits.
s.push_str("__fdl_find_envs() {\n");
s.push_str(" local _dir=\"$PWD\" _f _n\n");
s.push_str(" while :; do\n");
s.push_str(" if [[ -f \"$_dir/fdl.yml\" ]]; then\n");
s.push_str(" for _f in \"$_dir\"/fdl.*.yml(N); do\n");
s.push_str(" _n=\"${_f##*/fdl.}\"\n");
s.push_str(" _n=\"${_n%.yml}\"\n");
s.push_str(" [[ -n \"$_n\" && \"$_n\" != *.* ]] && print -- \"@$_n\"\n");
s.push_str(" done\n");
s.push_str(" return\n");
s.push_str(" fi\n");
s.push_str(" [[ \"$_dir\" == \"/\" ]] && return\n");
s.push_str(" _dir=\"${_dir:h}\"\n");
s.push_str(" done\n");
s.push_str("}\n");
s.push_str("_fdl() {\n");
s.push_str(" local -a commands envs\n");
let top_level_with_flags = {
let mut v: Vec<String> = data.top_level.clone();
for f in TOP_FLAGS {
v.push((*f).to_string());
}
v
};
s.push_str(&format!(
" commands=({})\n",
top_level_with_flags.join(" ")
));
s.push_str(" envs=(${(f)\"$(__fdl_find_envs)\"})\n");
s.push('\n');
// `@<env>` selector shift: `fdl @cluster <cmd> ...`. When
// $words[2] matches a discovered `@env`, shift positions by one so
// every subsequent check sees the same indices as the no-env case.
s.push_str(" local env_offset=0\n");
s.push_str(" if (( ${#words} >= 2 )) && (( ${envs[(I)$words[2]]} )); then\n");
s.push_str(" env_offset=1\n");
s.push_str(" fi\n");
s.push_str(" local cword=$((CURRENT - env_offset))\n");
s.push('\n');
s.push_str(" if (( cword == 2 )); then\n");
s.push_str(" if (( env_offset == 0 )) && (( ${#envs} > 0 )); then\n");
s.push_str(" _describe 'env overlay' envs\n");
s.push_str(" fi\n");
s.push_str(" _describe 'command' commands\n");
s.push_str(" return\n");
s.push_str(" fi\n");
s.push_str("\n case $words[$((2 + env_offset))] in\n");
for cmd in &data.commands {
s.push_str(&format!(" {name})\n", name = cmd.name));
// Value completion when the previous word is a flag with choices/path/completer.
if cmd.options.iter().any(|o| o.takes_value) {
s.push_str(" case $words[CURRENT-1] in\n");
for opt in &cmd.options {
if !opt.takes_value {
continue;
}
let flags = opt.flag_tokens().join("|");
let body = match &opt.value {
ValueKind::Choices(cs) => format!(
" {flags}) _values 'value' {}; return ;;\n",
cs.join(" ")
),
ValueKind::Path => format!(
" {flags}) _files; return ;;\n",
),
ValueKind::Completer(c) => format!(
" {flags}) local -a vals; vals=(${{(f)\"$({c})\"}}); _describe 'value' vals; return ;;\n",
),
ValueKind::Any => format!(
" {flags}) return ;;\n",
),
ValueKind::None => continue,
};
s.push_str(&body);
}
s.push_str(" esac\n");
}
// Position 3 (after the command name): offer nested sub-commands + options.
let option_flags: Vec<String> = cmd
.options
.iter()
.flat_map(|o| o.flag_tokens())
.collect();
let mut all_flags = option_flags.clone();
all_flags.push("--help".into());
all_flags.push("-h".into());
let flags_joined = all_flags.join(" ");
// Position 3 (env-shifted): first-positional candidates.
// Presets carry descriptions (zsh can render them via
// `name:desc` pairs), real sub-commands do not.
if !cmd.presets.is_empty()
|| !cmd.sub_commands.is_empty()
|| !cmd.tree_commands.is_empty()
{
s.push_str(" if (( cword == 3 )); then\n");
if !cmd.presets.is_empty() {
s.push_str(" local -a presets\n");
let pairs: Vec<String> = cmd
.presets
.iter()
.map(|(n, d)| {
let desc = d.as_deref().unwrap_or("preset");
// Escape colons and single quotes to keep zsh
// from splitting the name:desc pair.
let safe = desc.replace('\'', "'\\''").replace(':', "\\:");
format!("'{n}:{safe}'")
})
.collect();
s.push_str(&format!(
" presets=({})\n",
pairs.join(" ")
));
s.push_str(" _describe 'preset' presets\n");
}
if !cmd.sub_commands.is_empty() {
s.push_str(" local -a subcommands\n");
s.push_str(&format!(
" subcommands=({})\n",
cmd.sub_commands.join(" ")
));
s.push_str(" _describe 'command' subcommands\n");
}
// Variant-shaped entry binary: its own subcommands, with
// descriptions sourced from the schema tree.
if !cmd.tree_commands.is_empty() {
s.push_str(" local -a treecmds\n");
let pairs: Vec<String> = cmd
.tree_commands
.iter()
.map(|t| {
let desc = t.description.as_deref().unwrap_or("command");
let safe = desc.replace('\'', "'\\''").replace(':', "\\:");
format!("'{}:{safe}'", t.name)
})
.collect();
s.push_str(&format!(
" treecmds=({})\n",
pairs.join(" ")
));
s.push_str(" _describe 'command' treecmds\n");
}
s.push_str(" fi\n");
}
// Per-subcommand value + flag dispatch (env-shifted slot), so
// `fdl <cmd> <sub> --<TAB>` offers that subcommand's flags.
if !cmd.tree_commands.is_empty() {
s.push_str(" case $words[$((3 + env_offset))] in\n");
for tc in &cmd.tree_commands {
s.push_str(&format!(" {})\n", tc.name));
if tc.options.iter().any(|o| o.takes_value) {
s.push_str(" case $words[CURRENT-1] in\n");
for opt in &tc.options {
if !opt.takes_value {
continue;
}
let flags = opt.flag_tokens().join("|");
let body = match &opt.value {
ValueKind::Choices(cs) => format!(
" {flags}) _values 'value' {}; return ;;\n",
cs.join(" ")
),
ValueKind::Path => format!(
" {flags}) _files; return ;;\n",
),
ValueKind::Completer(c) => format!(
" {flags}) local -a vals; vals=(${{(f)\"$({c})\"}}); _describe 'value' vals; return ;;\n",
),
ValueKind::Any => format!(
" {flags}) return ;;\n",
),
ValueKind::None => continue,
};
s.push_str(&body);
}
s.push_str(" esac\n");
}
let mut sub_flags: Vec<String> =
tc.options.iter().flat_map(|o| o.flag_tokens()).collect();
sub_flags.push("--help".into());
sub_flags.push("-h".into());
s.push_str(&format!(
" _values 'option' {}\n ;;\n",
sub_flags.join(" ")
));
}
s.push_str(" esac\n");
}
s.push_str(&format!(
" _values 'option' {flags_joined}\n"
));
s.push_str(" ;;\n");
}
// Built-in top-level entries: one match arm per top-level path.
// Parents with sub-commands offer the sub-command list at CURRENT ==
// 3, then dispatch per-child value/flag rules via a nested `case`.
for b in data.builtins.iter().filter(|b| b.path.len() == 1) {
let name = &b.path[0];
let has_subs = !b.sub_commands.is_empty();
let has_opts = !b.options.is_empty();
if !has_subs && !has_opts {
continue;
}
s.push_str(&format!(" {name})\n"));
// Flag value completion (single-level options).
if b.options.iter().any(|o| o.takes_value) {
s.push_str(" case $words[CURRENT-1] in\n");
for opt in &b.options {
if !opt.takes_value {
continue;
}
let flags = opt.flag_tokens().join("|");
let body = match &opt.value {
ValueKind::Choices(cs) => format!(
" {flags}) _values 'value' {}; return ;;\n",
cs.join(" ")
),
ValueKind::Path => format!(
" {flags}) _files; return ;;\n",
),
ValueKind::Completer(c) => format!(
" {flags}) local -a vals; vals=(${{(f)\"$({c})\"}}); _describe 'value' vals; return ;;\n",
),
ValueKind::Any => format!(
" {flags}) return ;;\n",
),
ValueKind::None => continue,
};
s.push_str(&body);
}
s.push_str(" esac\n");
}
if has_subs {
s.push_str(" if (( cword == 3 )); then\n");
s.push_str(" local -a subcmds\n");
s.push_str(&format!(
" subcmds=({})\n",
b.sub_commands.join(" ")
));
s.push_str(" _describe 'subcommand' subcmds\n");
s.push_str(" fi\n");
// Nested flag/value rules: dispatch on the env-shifted child slot.
let nested: Vec<&BuiltinCommandData> = data
.builtins
.iter()
.filter(|n| n.path.len() == 2 && n.path[0] == *name)
.collect();
if !nested.is_empty() {
s.push_str(" case $words[$((3 + env_offset))] in\n");
for nb in nested {
let child = &nb.path[1];
s.push_str(&format!(" {child})\n"));
if nb.options.iter().any(|o| o.takes_value) {
s.push_str(" case $words[CURRENT-1] in\n");
for opt in &nb.options {
if !opt.takes_value {
continue;
}
let flags = opt.flag_tokens().join("|");
let body = match &opt.value {
ValueKind::Choices(cs) => format!(
" {flags}) _values 'value' {}; return ;;\n",
cs.join(" ")
),
ValueKind::Path => format!(
" {flags}) _files; return ;;\n",
),
ValueKind::Completer(c) => format!(
" {flags}) local -a vals; vals=(${{(f)\"$({c})\"}}); _describe 'value' vals; return ;;\n",
),
ValueKind::Any => format!(
" {flags}) return ;;\n",
),
ValueKind::None => continue,
};
s.push_str(&body);
}
s.push_str(" esac\n");
}
let flags_quoted: Vec<String> = nb
.option_flags_with_help()
.iter()
.map(|f| format!("'{f}'"))
.collect();
s.push_str(&format!(
" _values 'option' {}\n",
flags_quoted.join(" ")
));
s.push_str(" ;;\n");
}
s.push_str(" esac\n");
}
}
if has_opts {
let flags_quoted: Vec<String> = b
.option_flags_with_help()
.iter()
.map(|f| format!("'{f}'"))
.collect();
s.push_str(&format!(
" _values 'option' {}\n",
flags_quoted.join(" ")
));
}
s.push_str(" ;;\n");
}
s.push_str(" esac\n");
s.push_str("}\n");
s.push_str("_fdl\n");
s
}