etc/etckeeper/update-ignore.d/02custom-ignore

   1 #!/bin/sh
   2 # NOTE: file derived from etckeeper/update-ignore.d/01update-ignore
   3 set -e
   4
   5 if [ "$VCS" = git ]; then
   6         dir=.git
   7         file=.gitignore
   8 elif [ "$VCS" = hg ]; then
   9         dir=.hg
  10         file=.hgignore
  11 elif [ "$VCS" = bzr ]; then
  12         dir=.bzr
  13         file=.bzrignore
  14 elif [ "$VCS" = darcs ]; then
  15         dir=_darcs
  16         file=.darcsignore
  17 else
  18         echo "etckeeper: unsupported VCS $VCS" >&2
  19         exit 1
  20 fi
  21
  22 if [ ! -d "$dir" ]; then
  23         exit 0
  24 fi
  25
  26 managed_by_etckeeper="managed by update-ignore.d/02custom-ignore"
  27
  28 nl() {
  29         echo >>"$file"
  30 }
  31
  32 comment() {
  33         comment="$1"
  34         echo "# $comment" >>"$file"
  35 }
  36
  37 ignore() {
  38         glob="$1"
  39
  40         case "$VCS" in
  41                 git)
  42                         # escape "#" in ignores, as otherwise it may
  43                         # be considered a comment
  44                         echo "$glob" | sed 's/#/\\#/g' >>"$file"
  45                 ;;
  46                 bzr)
  47                         echo "$glob" >>"$file"
  48                 ;;
  49                 hg)
  50                         # rather than converting the glob to a regexp, just
  51                         # configure hg to use globs
  52                         if [ -z "$hg_syntax_printed" ]; then
  53                                 comment "use glob syntax"
  54                                 echo "syntax: glob" >>"$file"
  55                                 nl
  56                                 hg_syntax_printed=1
  57                         fi
  58                         echo "$glob" | sed 's/#/\\#/g' >>"$file"
  59                 ;;
  60                 darcs)
  61                         # darcs doesn't understand globs, so we need to
  62                         # translate them into regexs. Not a complete converter,
  63                         # but suitable for given globs.
  64                         if [ "${glob%\*}" != "$glob" ]; then
  65                                 glob="${glob%\*}"
  66                         else
  67                                 glob="$glob"'($|/)'
  68                         fi
  69                         if [ "${glob#\*}" != "$glob" ]; then
  70                                 glob="${glob#\*}"
  71                         else
  72                                 glob='(^|/)'"$glob"
  73                         fi
  74                         glob="$( printf %s $glob | sed -e 's/\./\\./g;s/\*/[^\/]*/g;s/\?/[^\/]/g' )"
  75                         echo "$glob" >>"$file"
  76         esac
  77 }
  78
  79 writefile () {
  80         comment "begin section $managed_by_etckeeper (do not edit this section by hand)"
  81         nl
  82         ignore "aliases.db"
  83         ignore "postfix/*.db"
  84         nl
  85         comment "end section $managed_by_etckeeper"
  86 }
  87
  88 if [ -e "$file" ]; then
  89         if ! grep -q "$managed_by_etckeeper" "$file"; then
  90                 if [ "$1" != "-a" ]; then
  91                         echo "etckeeper: "$file" does not contain \"$managed_by_etckeeper\" comment; not updating"
  92                         exit 1
  93                 else
  94                         echo "etckeeper: "$file" exists but does not contain \"$managed_by_etckeeper\" comment; updating"
  95                         writefile
  96                         exit 0
  97                 fi
  98         fi
  99         realfile="$file"
 100         if [ -n "`type -p tempfile`" ]; then
 101                 tempfile="tempfile"
 102         elif [ -n "`type -p mktemp`" ]; then
 103                 tempfile="mktemp"
 104         else
 105                 echo "etckeeper warning: can't find tempfile or mktemp" >&2
 106         fi
 107         file=$($tempfile)
 108         (
 109                 skipping=
 110                 while read line; do
 111                         if echo "$line" | grep -q "$managed_by_etckeeper"; then
 112                                 if [ ! "$skipping" ]; then
 113                                         skipping=1
 114                                 else
 115                                         skipping=
 116                                         writefile
 117                                 fi
 118                         elif [ ! "$skipping" ]; then
 119                                 echo "$line" >> "$file"
 120                         fi
 121                 done
 122                 if [ "$skipping" ]; then
 123                         # reached end of file w/o ending block
 124                         writefile
 125                 fi
 126         ) <"$realfile"
 127
 128         mv -f "$file" "$realfile"
 129 else
 130         writefile
 131 fi