summaryrefslogtreecommitdiff
path: root/bin/rcup.in
blob: 24d7177ff96aa166f58de1e43b84708bc7a8d8e2 (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
#!@SHELL@

: ${RCM_LIB:=$(dirname "$0")/../share/rcm}
. "$RCM_LIB/rcm.sh"

link_or_copy() {
  $DEBUG "link_or_copy $1"
  local sigil="$1"

  if [ "x$sigil" = "xX" ]; then
    echo "cp_v"
  else
    echo "$LN"
  fi
}

link_file() {
  local src="$1"
  local dest="$2"
  local sigil="$3"

  if [ -h "$dest" ]; then
    rm_v -f "$dest"
  fi

  action="$(link_or_copy "$sigil")"
  $DEBUG "$action $src $dest"
  $action "$src" "$dest"
}

replace_file() {
  local src="$1"
  local dest="$2"
  local sigil="$3"

  $DEBUG replace_file "$1" "$2" $3

  rm_v -rf "$dest"
  link_file "$src" "$dest" "$sigil"
}

is_nested() {
  echo "$1" | sed "s:$DEST_DIR/::" | grep -q '/'
}

is_identical() {
  diff -q -s "$1" "$2" > /dev/null
}

handle_dir() {
  local dest="$1"

  $DEBUG "handle_dir $1"

  dirname "$dest" | xargs $MKDIR -p
}

handle_file() {
  local src="$1"
  local dest="$2"
  local sigil="$3"

  $DEBUG "handle_file $1 $2 $3"

  if [ -e "$dest" ]; then
    if is_identical "$src" "$dest"; then
      $VERBOSE "identical $dest"
    elif [ $REPLACE_ALL -eq 1 ]; then
      replace_file "$src" "$dest" "$sigil"
    else
      $PROMPT "overwrite ${dest}? [ynaq]"
      read overwrite
      case "$overwrite" in
        a) REPLACE_ALL=1
           replace_file "$src" "$dest" "$sigil"
           ;;
        y) replace_file "$src" "$dest" "$sigil" ;;
        q) exit 1 ;;
        *) $VERBOSE "skipping $dest" ;;
      esac
    fi
  else
    link_file "$src" "$dest" "$sigil"
  fi
}

show_help() {
  local exit_code=${1:-0}

  $PRINT "Usage: rcup [-CfhiKkqVv] [-B HOSTNAME] [-d DOT_DIR] [-I EXCL_PAT] [-S EXCL_PAT] [-t TAG] [-x EXCL_PAT]"
  $PRINT "see rcup(1) and rcm(7) for more details"

  exit $exit_code
}

handle_command_line() {
  local arg_tags=
  local verbosity=0
  local version=0
  local run_hooks=1
  local dotfiles_dirs=
  local files=
  local excludes=
  local includes=
  local always_copy=0
  local symlink_dirs=
  local hostname=
  REPLACE_ALL=0

  while getopts :CVqvfhikKI:x:S:t:d:B: opt; do
    case "$opt" in
      B) hostname="$OPTARG" ;;
      C) always_copy=1 ;;
      d) dotfiles_dirs="$dotfiles_dirs $OPTARG" ;;
      f) REPLACE_ALL=1 ;;
      h) show_help ;;
      i) REPLACE_ALL=0 ;;
      I) includes="$includes $OPTARG" ;;
      k) run_hooks=1 ;;
      K) run_hooks=0 ;;
      q) verbosity=$(($verbosity - 1)) ;;
      t) arg_tags="$arg_tags $OPTARG" ;;
      S) symlink_dirs="$symlink_dirs $OPTARG";;
      v) verbosity=$(($verbosity + 1)) ;;
      V) version=1 ;;
      x) excludes="$excludes $OPTARG" ;;
      ?) show_help 64 ;;
    esac
  done
  shift $(($OPTIND-1))

  LN="ln_v"
  if [ $always_copy -eq 1 ]; then
    LN="cp_v"
  fi

  handle_common_flags rcup $version $verbosity
  hostname="$(determine_hostname "$hostname")"

  tags="${arg_tags:-$TAGS}"
  DOTFILES_DIRS="${dotfiles_dirs:-$DOTFILES_DIRS}"
  RUN_HOOKS=$run_hooks
  files="$@"

  for tag in $tags; do
    LS_ARGS="$LS_ARGS -t $tag"
  done
  for dotfiles_dir in $DOTFILES_DIRS; do
    LS_ARGS="$LS_ARGS -d $dotfiles_dir"
  done
  for exclude in $excludes; do
    LS_ARGS="$LS_ARGS -x $exclude"
  done
  for include in $includes; do
    LS_ARGS="$LS_ARGS -I $include"
  done
  for symlink_dir in $symlink_dirs; do
    LS_ARGS="$LS_ARGS -S $symlink_dir"
  done
  LS_ARGS="$LS_ARGS -B $hostname $files"

  $DEBUG "LS_ARGS: $LS_ARGS"
}

LS_ARGS=-F

handle_command_line "$@"
: ${DOTFILES_DIRS:=$DOTFILES_DIRS $DEFAULT_DOTFILES_DIR}

run_hooks pre up

dests_and_srcs="$(lsrc $LS_ARGS)"

saved_ifs="$IFS"
IFS='
'
for dest_and_src in $dests_and_srcs; do
  IFS=:
  set -- $dest_and_src
  IFS="$saved_ifs"
  dest="$1"
  src="$2"
  sigil="$3"

  if is_nested "$dest"; then
    handle_dir "$dest"
  fi

  handle_file "$src" "$dest" "$sigil"
done

run_hooks post up