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Revision 1.2 - (hide annotations) (download)
Tue Sep 20 13:13:42 2005 UTC (8 years, 9 months ago) by flameeyes
Branch: MAIN
Changes since 1.1: +17 -1 lines
Added egethome function to portability eclass.

1 flameeyes 1.1 # Copyright 1999-2005 Gentoo Foundation
2     # Distributed under the terms of the GNU General Public License v2
3 flameeyes 1.2 # $Header: /var/cvsroot/gentoo-x86/eclass/portability.eclass,v 1.1 2005/09/18 17:33:44 flameeyes Exp $
4 flameeyes 1.1 #
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}/${dirstruct}"
22    
23     shift
24     done
25     }
26    
27     # seq min max
28     #
29     # compatibility function that mimes seq command if not available
30     seq() {
31     local p
32     p=$(type -P seq)
33    
34     case $# in
35     1)
36     min=1
37     max=$1
38     step=1
39     ;;
40     2)
41     min=$1
42     max=$2
43     step=1
44     ;;
45     3)
46     min=$1
47     max=$3
48     step=$2
49     ;;
50     *)
51     die "seq called with wrong parameters number"
52     esac
53    
54     if [[ -z "${p}" ]]; then
55     local reps
56     # BSD userland
57     if [[ ${step} != 0 ]]; then
58     reps=$(( ($max-$min) / $step +1 ))
59     else
60     reps=0
61     fi
62    
63     jot $reps $min $max $step
64     else
65     "${p}" $min $step $max
66     fi
67     }
68    
69     # Gets the linker flag to link to dlopen() function
70     dlopen_lib() {
71     if [[ ${ELIBC} != *BSD ]]; then
72     echo "-ldl"
73     fi
74     }
75    
76 flameeyes 1.2 # Gets the home directory for the specified user
77     # it's a wrap around egetent as the position of the home directory in the line
78     # varies depending on the os used.
79     #
80     # To use that, inherit eutils, not portability!
81     egethome() {
82     ent=$(egetent passwd $1)
83    
84     if [[ "${USERLAND}" == "Darwin" || "${ELIBC}" == "FreeBSD" ]]; then
85     # Darwin/OSX and FreeBSD uses position 9 to store the home dir
86     cut -d: -f9 <<<${ent}
87     else
88     # Linux and NetBSD uses position 6 instead
89     cut -d: -f6 <<<${ent}
90     fi
91     }

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