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Revision 1.20 - (show annotations) (download)
Thu Nov 3 00:26:17 2011 UTC (2 years, 8 months ago) by vapier
Branch: MAIN
Changes since 1.19: +1 -2 lines
restore egethome as some packages in the tree have been parsing getent directly for this

1 # Copyright 1999-2005 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/portability.eclass,v 1.19 2011/10/31 17:39:52 vapier Exp $
4 #
5 # Author: Diego Pettenò <flameeyes@gentoo.org>
6 #
7 # This eclass is created to avoid using non-portable GNUisms inside ebuilds
8 #
9 # NB: If you add anything, please comment it!
10
11 # treecopy orig1 orig2 orig3 .... dest
12 #
13 # mimic cp --parents copy, but working on BSD userland as well
14 treecopy() {
15 dest=${!#}
16 files_count=$#
17
18 while(( $# > 1 )); do
19 dirstruct=$(dirname "$1")
20 mkdir -p "${dest}/${dirstruct}"
21 cp -pPR "$1" "${dest}/${dirstruct}"
22
23 shift
24 done
25 }
26
27 # seq min max
28 #
29 # compatibility function that mimes seq command if not available
30 seq() {
31 # First try `seq`
32 local p=$(type -P seq)
33 if [[ -n ${p} ]] ; then
34 "${p}" "$@"
35 return $?
36 fi
37
38 case $# in
39 1) min=1 max=$1 step=1 ;;
40 2) min=$1 max=$2 step=1 ;;
41 3) min=$1 max=$3 step=$2 ;;
42 *) die "seq called with wrong number of arguments" ;;
43 esac
44
45 # Then try `jot`
46 p=$(type -P jot)
47 if [[ -n ${p} ]] ; then
48 local reps
49 # BSD userland
50 if [[ ${step} != 0 ]] ; then
51 reps=$(( (max - min) / step + 1 ))
52 else
53 reps=0
54 fi
55
56 jot $reps $min $max $step
57 return $?
58 fi
59
60 # Screw it, do the output ourselves
61 while :; do
62 [[ $max < $min && $step > 0 ]] && break
63 [[ $min < $max && $step < 0 ]] && break
64 echo $min
65 : $(( min += step ))
66 done
67 return 0
68 }
69
70 # Gets the linker flag to link to dlopen() function
71 dlopen_lib() {
72 # - Solaris needs nothing
73 # - Darwin needs nothing
74 # - *BSD needs nothing
75 # - Linux needs -ldl (glibc and uclibc)
76 # - Interix needs -ldl
77 case "${CHOST}" in
78 *-linux-gnu*|*-linux-uclibc|*-interix*)
79 echo "-ldl"
80 ;;
81 esac
82 }
83
84 # Gets the name of the BSD-ish make command (pmake from NetBSD)
85 #
86 # This will return make (provided by system packages) for BSD userlands,
87 # or bsdmake for Darwin userlands and pmake for the rest of userlands,
88 # both of which are provided by sys-devel/pmake package.
89 #
90 # Note: the bsdmake for Darwin userland is with compatibility with MacOSX
91 # default name.
92 get_bmake() {
93 if [[ ${USERLAND} == *BSD ]]; then
94 echo make
95 elif [[ ${USERLAND} == "Darwin" ]]; then
96 echo bsdmake
97 else
98 echo pmake
99 fi
100 }
101
102 # Portable method of getting mount names and points.
103 # Returns as "point node fs options"
104 # Remember to convert 040 back to a space.
105 get_mounts() {
106 local point= node= fs= opts= foo=
107
108 # Linux has /proc/mounts which should always exist
109 if [[ $(uname -s) == "Linux" ]] ; then
110 while read node point fs opts foo ; do
111 echo "${point} ${node} ${fs} ${opts}"
112 done < /proc/mounts
113 return
114 fi
115
116 # OK, pray we have a -p option that outputs mounts in fstab format
117 # using tabs as the seperator.
118 # Then pray that there are no tabs in the either.
119 # Currently only FreeBSD supports this and the other BSDs will
120 # have to be patched.
121 # Athough the BSD's may support /proc, they do NOT put \040 in place
122 # of the spaces and we should not force a /proc either.
123 local IFS=$'\t'
124 LC_ALL=C mount -p | while read node point fs foo ; do
125 opts=${fs#* }
126 fs=${fs%% *}
127 echo "${point// /\040} ${node// /\040} ${fs%% *} ${opts// /\040}"
128 done
129 }
130
131 _dead_portability_user_funcs() { die "if you really need this, please file a bug for base-system@gentoo.org"; }
132 egetshell() { _dead_portability_user_funcs; }
133 is-login-disabled() { _dead_portability_user_funcs; }

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