blob: 8cefc47816f88cb492f604bda9fa65693436c949 (
plain) (
blame)
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
|
skip () {
if [ -n "$NIX_DEBUG" ]; then
echo "skipping impure path $1" >&2
fi
}
# Checks whether a path is impure. E.g., `/lib/foo.so' is impure, but
# `/nix/store/.../lib/foo.so' isn't.
badPath() {
local p=$1
# Relative paths are okay (since they're presumably relative to
# the temporary build directory).
if [ "${p:0:1}" != / ]; then return 1; fi
# Otherwise, the path should refer to the store or some temporary
# directory (including the build directory).
test \
"$p" != "/dev/null" -a \
"${p:0:${#NIX_STORE}}" != "$NIX_STORE" -a \
"${p:0:4}" != "/tmp" -a \
"${p:0:${#NIX_BUILD_TOP}}" != "$NIX_BUILD_TOP"
}
# @args.rsp parser.
# Char classes: space, other, backslash, single quote, double quote.
# States: 0 - outside, 1/2 - unquoted arg/slash, 3/4 - 'arg'/slash, 5/6 - "arg"/slash.
# State transitions:
rspT=(01235 01235 11111 33413 33333 55651 55555)
# Push (a) arg or (c) char on transition:
rspP[10]=a rspP[01]=c rspP[11]=c rspP[21]=c rspP[33]=c rspP[43]=c rspP[55]=c rspP[65]=c
rspParse() {
rsp=()
local state=0
local arg=''
local c
while read -r -N1 c; do
local cls=1
case "$c" in
' ' | $'\t' | $'\r' | $'\n') cls=0 ;;
'\') cls=2 ;;
"'") cls=3 ;;
'"') cls=4 ;;
esac
local nextstates="${rspT[$state]}"
local nextstate="${nextstates:$cls:1}"
case "${rspP[$state$nextstate]}" in
'c') arg+="$c" ;;
'a') rsp+=("$arg"); arg='' ;;
esac
state="$nextstate"
done
if [ "$state" -ne 0 ]; then
rsp+=("$arg")
fi
}
expandResponseParams() {
params=()
while [ $# -gt 0 ]; do
local p="$1"
shift
if [ "${p:0:1}" = '@' -a -e "${p:1}" ]; then
rspParse <"${p:1}"
set -- "${rsp[@]}" "$@"
else
params+=("$p")
fi
done
}
|