iankelling.org Git - small-misc-bash/blob - ex

   1 #!/bin/bash
   2 # Copyright (C) 2014 Ian Kelling
   3
   4 # Licensed under the Apache License, Version 2.0 (the "License");
   5 # you may not use this file except in compliance with the License.
   6 # You may obtain a copy of the License at
   7
   8 #     http://www.apache.org/licenses/LICENSE-2.0
   9
  10 # Unless required by applicable law or agreed to in writing, software
  11 # distributed under the License is distributed on an "AS IS" BASIS,
  12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 # See the License for the specific language governing permissions and
  14 # limitations under the License.
  15
  16 ex() {
  17   local help="Usage: ex [--help|-q] FILE...
  18 Extract many types of files
  19
  20 Based on their extensions,
  21 7z [tar.]bz2 deb [tar.]gz iso dsc rar rpm sfs tar xpi [tar.]xz zip Z.
  22 See source for exact file extensions.
  23 Note: dtrx (package & command) extracts most of these plus some others."
  24
  25   local quiet=false
  26   case $1 in
  27     --help)
  28       echo "$help"
  29       return 0
  30       ;;
  31     -q)
  32       quiet=true
  33       shift
  34       ;;
  35   esac
  36   local x super restore_nullglob f
  37   for x in "$@"; do
  38     case "$x" in
  39       # tars first, so they are higher pri than non-tar extensions
  40       *.tar )
  41         $quiet || echo tar xf "$x"
  42         tar xf "$x"
  43         ;;
  44       *.tar.bz2 | *.tbz2 )
  45         $quiet || echo tar xjf "$x"
  46         tar xjf "$x"
  47         ;;
  48       *.tar.gz | *.tgz )
  49         $quiet || echo tar xzf "$x"
  50         tar xzf "$x"
  51         ;;
  52       *.tar.xz )
  53         $quiet || echo tar Jxf "$x"
  54         tar Jxf "$x"
  55         ;;
  56       *.xz)
  57         $quiet || echo pixz -d "$x"
  58         pixz -d "$x"
  59         ;;
  60       *.7z )
  61         $quiet || echo 7za x "$x"
  62         7za x "$x"
  63         ;;
  64       *.bz2 )
  65         $quiet || echo bunzip2 "$x"
  66         bunzip2 "$x"
  67         ;;
  68       *.deb )
  69         $quiet || ar x "$x"
  70         ar x "$x"
  71         restore_nullglob=false
  72         if ! shopt -q nullglob; then
  73           restore_nullglob=true
  74         fi
  75         tmp=(data.tar.* control.tar.*)
  76         if $restore_nullglob; then
  77           shopt -u nullglob
  78         fi
  79         if (( ${#tmp[@]} != 2 )); then
  80           echo "error: could not find data.tar.* or control.tar.*" >&2
  81           return 1
  82         fi
  83         for f in ${tmp[@]}; do
  84           case $f in
  85             *.xz)
  86               $quiet || echo tar xJf $f
  87               tar xJf $f
  88               rm -f $f
  89               ;;
  90             *.gz)
  91               $quiet || echo tar xzf $f
  92               tar xzf $f
  93               rm -f $f
  94               ;;
  95             *)
  96               echo "ex: ERROR: file i didnt expect: $f"
  97               ;;
  98           esac
  99         done
 100         ;;
 101       *.dsc)
 102         $quiet || echo dpkg-source -x "$x"
 103         dpkg-source -x "$x"
 104         ;;
 105       *.gz )
 106         $quiet || echo gunzip "$x"
 107         gunzip "$x"
 108         ;;
 109       *.iso )
 110         local super
 111         if [[ $EUID != 0 ]]; then
 112           super=sudo
 113         fi
 114         local temp_dir
 115         temp_dir=$(mktemp -d)
 116         $super losetup -f
 117         $quiet || echo $super mount -o loop "$x" "$temp_dir"
 118         $super mount -o loop "$x" "$temp_dir"
 119         local dir="${x%%.iso}"
 120         mkdir "$dir"
 121         $quiet || cp -a "$temp_dir"/* "$dir"
 122         cp -a "$temp_dir"/* "$dir"
 123         $quiet || $super umount "$temp_dir"
 124         $super umount "$temp_dir"
 125         ;;
 126       *.jar)
 127         $quiet || echo jar xf "$x"
 128         jar xf "$x"
 129         ;;
 130       *.r[0-9][0-9]|*.rar )
 131         $quiet || echo unrar x "$x"
 132         unrar x "$x"
 133         ;;
 134       *.rpm )
 135         $quiet || echo "rpm2cpio $x | cpio --extract --make-directories"
 136         rpm2cpio "$x" | cpio --extract --make-directories
 137         ;;
 138       *.sfs)
 139         $quiet || echo $super unsquashfs "$x"
 140         $super unsquashfs "$x"
 141         ;;
 142       *.Z )
 143         $quiet || echo uncompress "$x"
 144         uncompress "$x"
 145         ;;
 146       *.zip|*.xpi )
 147         $quiet || echo unzip "$x"
 148         unzip "$x"
 149         ;;
 150
 151       *)  echo "I don't know how to extract $x";;
 152     esac
 153   done
 154 }
 155 ex "$@"