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
|
#!/usr/bin/env bash
if ! builtin type -P alr &>/dev/null; then
echo alr must be in PATH for completion to work
return
fi
# Commands/Topics: all line-first words not starting with capital letter, after # COMMANDS
_alr_commands=$(alr | grep COMMANDS -A 99 | awk '{print $1}' | grep -v '[[:upper:]]' | xargs)
# Long global switches
_alr_global_switches=$(alr -h | grep -Eo -- '--[[:alnum:]-]+' | xargs)
# Crate names
_alr_crates=$(alr search --crates | cut -f1 -d' ')
# Command-aware long switches
function _alr_completion() {
curr=$2
prev=$3
# Identify which command is being entered, if any
found=false
for word in "${COMP_WORDS[@]}"; do # completed words
for cmd in $_alr_commands; do # alr commands
if [ "$word" == "$cmd" ]; then
# Note that $cmd holds the identified command, that we will use later
found=true
break 2
fi
done
done
# When no command found, suggest commands and long global switches.
# Although global switches can be used even after the command is given, by
# hidding them after the command we obtain clearer command-specific
# suggestions.
$found || COMPREPLY+=($(compgen -W "$_alr_commands $_alr_global_switches" -- $curr))
# When command found, always add the compatible command switches
if $found ; then
cmd_switches=$(alr $cmd -h | grep -Eo -- '--[[:alnum:]-]+' | xargs)
[ "$cmd_switches" != "" ] && COMPREPLY+=($(compgen -W "$cmd_switches" -- $curr))
fi
# Command-specific completions
$found &&\
case $cmd in
get | show | toolchain)
# Suggest crate names
COMPREPLY+=($(compgen -W "$_alr_crates" -- $curr))
;;
index)
# Suggest paths when adding a new index
[ "$prev" == "--add" ] && compopt -o dirnames
;;
publish)
# Suggest files when using a non-standard manifest
[ "$prev" == "--manifest" ] && compopt -o filenames
;;
run)
# Suggest only the executables explicitly declared by the release
COMPREPLY+=($(compgen -W "$(alr run --list |\
sed -n '/builds these executables/,//p' |\
tail -n +2 |\
awk '{print $1}')" -- $curr))
;;
with)
# When the previous word is "with", show any crate:
[ "$prev" == "with" ] && COMPREPLY+=($(compgen -W "$_alr_crates" -- $curr))
# When the previous word is "--del", show direct dependencies:
[ "$prev" == "--del" ] && COMPREPLY+=($(compgen -W "$(alr with | tail +2 | grep -Eo -- '[_a-z0-9]+')" -- $curr))
;;
esac
}
# Bind the function that performs context-aware completion
complete -F _alr_completion alr
|
