blob: 84166ae5fe45ddeefb82f060fb8d3d1b898e81c9 (
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
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
#!/usr/bin/env bash
BASEDIR="$PWD"
ENVDIR="$PWD/env"
export GREP_OPTIONS=
usage() {
cat <<EOF
Usage: $0 [options] <command> [arguments]
Commands:
help This help text
list List environments
clear Delete all environment and revert to flat config/files
new <name> Create a new environment
switch <name> Switch to a different environment
delete <name> Delete an environment
rename <newname> Rename the current environment
diff Show differences between current state and environment
save [message] Save your changes to the environment, optionally using
the given commit message
revert Revert your changes since last save
Options:
EOF
exit ${1:-1}
}
error() {
echo "$0: $*"
exit 1
}
ask_bool() {
local DEFAULT="$1"; shift
local def defstr val
case "$DEFAULT" in
1) def=0; defstr="Y/n";;
0) def=1; defstr="y/N";;
*) def=; defstr="y/n";;
esac
while [ -z "$val" ]; do
local VAL
echo -n "$* ($defstr): "
read VAL
case "$VAL" in
y*|Y*) val=0;;
n*|N*) val=1;;
*) val="$def";;
esac
done
return "$val"
}
env_init() {
local CREATE="$1"
if [ -z "$CREATE" ]; then
[ -d "$ENVDIR" ] || exit 0
fi
[ -x "$(which git 2>/dev/null)" ] || error "Git is not installed"
mkdir -p "$ENVDIR" || error "Failed to create the environment directory"
cd "$ENVDIR" || error "Failed to switch to the environment directory"
[ -d .git ] || {
git init &&
touch .config &&
mkdir files &&
git add . &&
git commit -q -m "Initial import"
} || {
rm -rf .git
error "Failed to initialize the environment directory"
}
}
env_sync_data() {
[ \! -L "$BASEDIR/.config" -a -f "$BASEDIR/.config" ] && mv "$BASEDIR/.config" "$ENVDIR"
git add .
git add -u
}
env_sync() {
local STR="$1"
env_sync_data
git commit -m "${STR:-Update} at $(date)"
}
env_link_config() {
rm -f "$BASEDIR/.config"
ln -s env/.config "$BASEDIR/.config"
mkdir -p "$ENVDIR/files"
[ -L "$BASEDIR/files" ] || ln -s env/files "$BASEDIR/files"
}
env_do_reset() {
git reset --hard HEAD
git clean -d -f
}
env_list() {
env_init
git branch --color | grep -vE '^. master$'
}
env_diff() {
env_init
env_sync_data
git diff --cached --color=auto
env_link_config
}
env_save() {
env_init
env_sync "$@"
env_link_config
}
env_revert() {
env_init
env_do_reset
env_link_config
}
env_ask_sync() {
env_sync_data
LINES="$(env_diff | wc -l)" # implies env_init
[ "$LINES" -gt 0 ] && {
if ask_bool 1 "Do you want to save your changes"; then
env_sync
else
env_do_reset
fi
}
}
env_clear() {
env_init
[ -L "$BASEDIR/.config" ] && rm -f "$BASEDIR/.config"
[ -L "$BASEDIR/files" ] && rm -f "$BASEDIR/files"
[ -f "$ENVDIR/.config" ] || ( cd "$ENVDIR/files" && find | grep -vE '^\.$' > /dev/null )
env_sync_data
if ask_bool 1 "Do you want to keep your current config and files"; then
mkdir -p "$BASEDIR/files"
shopt -s dotglob
cp -a "$ENVDIR/files/"* "$BASEDIR/files" 2>/dev/null >/dev/null
shopt -u dotglob
cp "$ENVDIR/.config" "$BASEDIR/"
else
rm -rf "$BASEDIR/files" "$BASEDIR/.config"
fi
cd "$BASEDIR"
rm -rf "$ENVDIR"
}
env_delete() {
local name="${1##*/}"
env_init
[ -z "$name" ] && usage
branch="$(git branch | grep '^\* ' | awk '{print $2}')"
[ "$name" = "$branch" ] && error "cannot delete the currently selected environment"
git branch -D "$name"
}
env_switch() {
local name="${1##*/}"
[ -z "$name" ] && usage
env_init
env_ask_sync
git checkout "$name" || error "environment '$name' not found"
env_link_config
}
env_rename() {
local NAME="${1##*/}"
env_init
git branch -m "$NAME"
}
env_new() {
local NAME="$1"
local branch
local from="master"
[ -z "$NAME" ] && usage
env_init 1
branch="$(git branch | grep '^\* ' | awk '{print $2}')"
if [ -n "$branch" -a "$branch" != "master" ]; then
env_ask_sync
if ask_bool 0 "Do you want to clone the current environment?"; then
from="$branch"
fi
rm -f "$BASEDIR/.config" "$BASEDIR/files"
fi
git checkout -b "$1" "$from"
if [ -f "$BASEDIR/.config" -o -d "$BASEDIR/files" ]; then
if ask_bool 1 "Do you want to start your configuration repository with the current configuration?"; then
[ -d "$BASEDIR/files" -a \! -L "$BASEDIR/files" ] && {
mkdir -p "$ENVDIR/files"
shopt -s dotglob
mv "$BASEDIR/files/"* "$ENVDIR/files/" 2>/dev/null
shopt -u dotglob
rmdir "$BASEDIR/files"
}
env_sync
else
rm -rf "$BASEDIR/.config" "$BASEDIR/files"
fi
fi
env_link_config
}
COMMAND="$1"; shift
case "$COMMAND" in
help) usage 0;;
new) env_new "$@";;
list) env_list "$@";;
clear) env_clear "$@";;
switch) env_switch "$@";;
delete) env_delete "$@";;
rename) env_rename "$@";;
diff) env_diff "$@";;
save) env_save "$@";;
revert) env_revert "$@";;
*) usage;;
esac
|
