blob: 74940dbe3125bb219eea0228bd77fb7d57632c55 (
plain)
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
|
function __trap_translate_signal
set upper (echo $argv[1]|tr a-z A-Z)
if expr $upper : 'SIG.*' >/dev/null
echo $upper | cut -c 4-
else
echo $upper
end
end
function __trap_switch
switch $argv[1]
case EXIT
echo --on-exit %self
case '*'
echo --on-signal $argv[1]
end
end
function trap -d 'Perform an action when the shell recives a signal'
set -l mode
set -l cmd
set -l sig
set -l shortopt
set -l longopt
set -l shortopt -o lph
set -l longopt
if not getopt -T >/dev/null
set longopt -l print,help,list-signals
end
if not getopt -n type -Q $shortopt $longopt -- $argv
return 1
end
set -l tmp (getopt $shortopt $longopt -- $argv)
eval set opt $tmp
while count $opt >/dev/null
switch $opt[1]
case -h --help
help trap
return 0
case -p --print
set mode print
case -l --list-signals
set mode list
case --
set -e opt[1]
break
end
set -e opt[1]
end
if not count $mode >/dev/null
switch (count $opt)
case 0
set mode print
case 1
set mode clear
case '*'
if test opt[1] = -
set -e opt[1]
set mode clear
else
set mode set
end
end
end
switch $mode
case clear
for i in $opt
set -- sig (__trap_translate_signal $i)
if test $sig
functions -e __trap_handler_$sig
end
end
case set
set -l cmd $opt[1]
set -e opt[1]
for i in $opt
set -l -- sig (__trap_translate_signal $i)
set -- sw (__trap_switch $sig)
if test $sig
eval "function __trap_handler_$sig $sw; $cmd; end"
else
return 1
end
end
case print
set -l names
if count $opt >/dev/null
set -- names $opt
else
set -- names (functions -na|grep "^__trap_handler_"|sed -e 's/__trap_handler_//' )
end
for i in $names
set -- sig (__trap_translate_signal $i)
if test sig
functions __trap_handler_$i
else
return 1
end
end
case list
kill -l
end
end
|