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1 #!/bin/bash |
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2 |
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3 if test -z "$BASH"; then |
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4 cmd="$0" |
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5 if test "`basename $0`" = "$0"; then |
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6 cmd="./$0" |
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7 fi |
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8 echo "This script is designed to be run using GNU bash." |
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9 echo "Try: chmod +x $0 && $cmd" |
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10 exit 1 |
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11 fi |
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12 |
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13 my_which_real() |
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14 { |
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15 test -n "$1" || return 1 |
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16 local i |
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17 local part |
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18 for (( i=1; ; i++ )); do |
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19 part=`echo "$PATH" | cut -d ':' -f $i` |
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20 test -n "$part" || return 1 |
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21 if test -x "$part/$1"; then echo "$part/$1"; return 0; fi |
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22 done |
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23 } |
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24 |
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25 my_which() |
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26 { |
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27 local out |
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28 local r |
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29 out=`my_which_real "$1"` |
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30 r=$? |
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31 if test -z "$out" -o $r = 1 ; then echo "ERROR: $1 command not found on system" 1>&2;exit 1;fi |
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32 echo $out |
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33 return $r |
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34 } |
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35 |
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36 progressbit() |
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37 { |
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38 local i |
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39 local pbar |
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40 local line |
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41 i=0 |
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42 pbar="-\\|/" |
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43 while read line; do |
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44 ((i++)) |
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45 j=$(($i % ${#pbar})) |
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46 echo -ne "\r${pbar:$j:1} Extracting..." |
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47 done |
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48 } |
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49 |
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50 mktempdir() |
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51 { |
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52 local tempdir |
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53 tempdir=/tmp/ext`$dd if=/dev/urandom bs=128 count=1 2>/dev/null | $md5sum - | cut -c 1-6` |
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54 echo $tempdir |
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55 return 0 |
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56 } |
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57 |
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58 getdata() |
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59 { |
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60 offset=`$cat $0 | $grep -an '^##DATA' | cut -d ':' -f 1 || exit 1` |
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61 offset=$((offset + 1)) |
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62 $cat $0 | $tail -n+$offset |
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63 } |
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64 |
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65 for cmd in bzip2 tar grep tail cat wc dd md5sum; do |
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66 my_which $cmd>/dev/null || exit 1 |
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67 eval $cmd=`my_which $cmd` |
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68 if test x$? = x1; then |
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69 exit 1 |
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70 fi |
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71 done |
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72 |
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73 tempdir="" |
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74 extractonly=0 |
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75 while test -n "$1"; do |
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76 case "$1" in |
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77 -x) |
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78 extractonly=1 |
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79 if test -n "$2"; then |
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80 tempdir=$2 |
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81 else |
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82 tempdir=`echo $0 | sed -re 's/\.[a-z0-9_-]{1,5}$//'` |
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83 fi |
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84 ;; |
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85 esac |
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86 shift |
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87 done |
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88 |
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89 test -n "$tempdir" || tempdir=`mktempdir` |
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90 |
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91 if test -d "$tempdir"; then |
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92 if test $extractonly = 1; then |
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93 i=0 |
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94 basetemp="$tempdir" |
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95 while test -d "$tempdir"; do |
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96 tempdir="${basetemp}${i}" |
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97 ((i++)) |
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98 done |
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99 else |
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100 while test -d "$tempdir"; do |
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101 tempdir=`mktempdir` |
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102 done |
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103 fi |
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104 fi |
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105 |
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106 mkdir "$tempdir" || exit 1 |
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107 echo -ne "\e[?25l- Extracting..." |
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108 getdata | $bzip2 -dc | $tar xvCf $tempdir - | progressbit \ |
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109 || ( |
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110 rm -rf $tempdir |
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111 echo -ne "\e[?25h" |
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112 exit 1 |
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113 ) |
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114 |
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115 echo -ne "\r\e[?25h" |
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116 |
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117 # trap exits so we can clean up if the script is interrupted |
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118 handle_interrupt() |
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119 { |
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120 rm -rf $tempdir |
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121 } |
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122 trap handle_interrupt 0 |
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123 |
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124 if test -x $tempdir/autorun.sh && test $extractonly != 1; then |
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125 $tempdir/autorun.sh |
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126 ret=$? |
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127 rm -rf $tempdir |
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128 exit $ret |
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129 else |
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130 echo "Contents extracted to $tempdir." |
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131 fi |
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132 |
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133 trap "exit 0;" 0 |
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134 |
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135 exit 0 |
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136 |
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137 ##DATA |