blob: a010f265bf8c44457350ba842955e4f8b7d736fe (
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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id: vi.eselect 261 2006-03-30 21:11:55Z kugelfang $
DESCRIPTION="Manage binaries provided by slotted gems."
MAINTAINER="graaff@gentoo.org"
# Manage binaries installed by gems. Since gems install their binaries
# in a standard manner we can handle them with a single eselect
# module.
# Usage: eselect gems <gemname> <version> <binaries>
# This creates symlinks in /usr/bin to the versioned binaries in the
# gem bin directory.
GEM_DIR="$(gem env gemdir)"
GEM_BIN_DIR="$GEM_DIR/bin"
# get_executables(gemname)
find_executables() {
# Parse the specifications file to get the list of executables as
# specified by the gem. Pick the last version.
echo $(grep -h s.executables "$GEM_DIR/specifications/${1}"-*.gemspec | tail -n 1 | cut --delimiter="=" --fields=2 | tr -d "[]\"/,")
}
# find a list of versions for this gem
find_targets() {
for f in "${GEM_DIR}/gems/${1}-"* ; do
if [[ -d ${f} ]] ; then
echo $(basename ${f} )
fi
done
}
# Try to remove the current symlinks for all the current executables
remove_symlinks() {
local executables=( $( find_executables ${1} ) )
for (( i = 0 ; i < ${#executables[@]} ; i = i + 1 )) ; do
target="${ROOT}/usr/bin/${executables[${i}]}"
rm ${target} &>/dev/null
done
}
# set the symlinks for all the executables
set_symlinks() {
local gem=${1}
local target=${2}
if is_number "${target}" && [[ ${target} -ge 1 ]] ; then
targets=( $(find_targets ${1}) )
target=${targets[$(( ${target} - 1 ))]}
target=$(echo $target | cut --delimiter="-" --fields=2)
fi
local executables=( $( find_executables ${1} ) )
for (( i = 0 ; i < ${#executables[@]} ; i = i + 1 )) ; do
executable="${ROOT}/usr/bin/${executables[${i}]}"
if [[ -f "${executable}-${target}" ]] ; then
rm "${executable}" >&/dev/null
ln -s "${executable}-${target}" "${executable}" || \
die "Couldn't set ${target} symlink"
else
die -q "Target \"${target}\" doesn't appear to be valid!"
fi
done
}
set_symlink_default() {
set_symlinks ${1} 1
}
set_symlink_by_slot() {
slot=${1}
local target=$(ls ${RAILS}-${slot}* 2>/dev/null)
if [[ -n ${target} ]]; then
remove_symlinks
ln -s ${target} ${RAILS}
else
die -q "No providers available for slot ${slot}"
fi
}
### show action ###
describe_show() {
echo "Show the currently selected version for the specific gem"
}
do_show() {
if [[ "x${1}" == "x" ]]; then
die -q "Usage error: a gem name is required."
fi
local executables=( $( find_executables ${1} ) )
local executable="${ROOT}/usr/bin/${executables[0]}"
write_list_start "Current ${1} version:"
if [[ -L "${executable}" ]] ; then
write_kv_list_entry "$(basename $(canonicalise ${executable} ) )" ""
elif [[ -e "${executable}" ]] ; then
write_kv_list_entry "(not a symlink: ${executable})" ""
else
write_kv_list_entry "(unset)" ""
fi
}
### list action ###
describe_list() {
echo "List available versions for the specific gem"
}
do_list() {
if [[ "x${1}" == "x" ]]; then
die -q "Usage error: a gem name is required."
fi
local executables=( $( find_executables ${1} ) )
local executable="${ROOT}/usr/bin/${executables[0]}"
# Find all the targets. Basically this means all the versions of
# the gem that are installed.
local i targets
targets=( $(find_targets ${1}) )
if [[ -n ${targets[@]} ]] ; then
for (( i = 0 ; i < ${#targets[@]} ; i = i + 1 )) ; do
[[ ${targets[${i}]} = \
$(basename $(canonicalise ${executable}) ) ]] &&
targets[${i}]="${targets[${i}]} $(highlight '*')"
done
write_list_start "Available ${1} versions:"
write_numbered_list "${targets[@]}"
else
write_kv_list_entry "(none found)" ""
fi
}
### set action ###
describe_set() {
echo "Set a new version for the specific gem"
}
describe_set_options() {
echo "target : Target name or number (from 'list' action)"
}
describe_set_parameters() {
echo "<target>"
}
do_set() {
if [[ $# != 2 ]]; then
die -q "Usage error: a gem name and a new setting are required."
fi
local gem=${1}
local version=${2}
local executables=( $( find_executables ${gem} ) )
local executable="${ROOT}/usr/bin/${executables[0]}"
if [[ -z ${version} ]] ; then
die -q "You didn't give me a version name"
elif [[ -L "${executable}" ]] ; then
if ! remove_symlinks ${gem} ; then
die -q "Can't remove existing ${executable} binary"
elif ! set_symlinks ${gem} "${version}" ; then
die -q "Can't set new ${executable} binary"
fi
elif [[ -e "${executable}" ]] ; then
write_warning_msg "Can't set a new ${executable} provider. There's a file in the way at ${executable}. You can try removing it manually, and then re-running this command."
else
set_symlinks ${gem} ${version} || die -q "Wasn't able to set a new provider"
fi
}
### update action ###
describe_update() {
echo "Updates the symlink(s) to the latest version available"
}
do_update() {
# Only set a symlink if there are any version of rails present
local gem=${1}
local target=${2}
local targets=( $(find_targets ${gem}) )
if [[ -z ${targets[@]} ]] ; then
remove_symlinks
fi
set_symlink_default ${gem}
do_show ${gem}
}
# vim: set ft=eselect :
|
GitWeb