/[packages]/cauldron/xz/current/SOURCES/xzme
ViewVC logotype

Contents of /cauldron/xz/current/SOURCES/xzme

Parent Directory Parent Directory | Revision Log Revision Log


Revision 576 - (show annotations) (download)
Sat Jan 8 13:39:49 2011 UTC (10 years, 8 months ago) by blino
File size: 6253 byte(s)
imported package xz
1 #!/bin/bash
2 # lzme re-compress gzip, zip, bzip2 ... files into xz
3 #==============================================================================
4 # Copyright (C) 1999-2002 MandrakeSoft (tvignaud@mandrakesoft.com)
5 # By Thierry Vignaud <tvignaud@mandrakesoft.com>
6 #
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2, or (at your option)
10 # any later version.
11 #
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
16 #
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, write to the Free Software
19 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 #
21 # The GNU General Public License can be read at
22 # http://www.fsf.org/copyleft/gpl.html
23 #==============================================================================
24 #
25 # Know bugs:
26 # ----------
27 # - bash getopt isn't gnu style aware, ie cmd opt1 file1 file2 opt2
28 # will result in ignoring opt2 option
29 #
30 #==============================================================================
31 #
32 # Changelog:
33 # ----------
34 # v1.0: original release
35 # v1.1: fix space usage (use pipe rather than temp file)
36 # v1.2: keep source file, not bz2 one if eof while decompressing
37 # v1.3: reduce used cpu time (decompressing only one time;
38 # source crc error 're detected through PIPESTATUS)
39 # v1.4: add zip support on popular^h^h^h^h^hGwenole request
40 # v1.5:
41 # - make zip method acting as z one (remove original file,
42 # keeping only smallest file, displaying size gain, ...)
43 # thus giving occasion to factorize some common code
44 # - check that the source file does exists
45 # - handle corrupted zip source file
46 # - comment the script and verbos-ize() some old changes
47 # - use cheaper shell tests
48 # - add GPL reference
49 # - update online help to reflect optional options and newer
50 # supported formats
51 # - remove dependency on sed by using ${1%old}new_extension
52 # v1.6:
53 # - print error message on stderr rather than on stdin
54 # - factorize/simplify zip method (fix erase temp files on bzip2ing
55 # error)
56 # - typo fixes
57 # - simplify for_each(file) loop
58 # - add "Know bugs" and TODO sections
59 # - add -h and -k options
60 # - if -k (keep) option is used, keep all files
61 # v1.7: handle file names with spaces
62 #
63 # v1.7a: added support for lzmash (Giuseppe Ghibò, <ghibo@mandriva.com>)
64 #
65 # v1.7b: updated to use new lzma command line tool which replaces old lzmash wrapper
66 # (Per Øyvind Karlsen <pkarlsen@mandriva.com>)
67 #
68 # v1.7c: use default compression level as -9 will take too much time and use too much
69 # memory for decompression to make it worthwhile (Per Øyvind Karlsen <pkarlsen@mandriva.com>
70 #
71 # v1.7d: us new xz format rather than old lzma_alone format (Per Øyvind Karlsen <peroyvind@mandriva.org>
72 #
73 # TODO:
74 # - retrieve my patch for solaris file utils
75 # - add trap for zip method (is it really useful?)
76 # - add a man page
77 # - move bzme in its own package that requires tar too
78
79
80 # Defaults
81 force=
82 keep=
83
84 # Corrupted source error message
85 src_err_msg ()
86 { if [ "$2" != 0 ]; then
87 echo "Corrupted source file ($1) !" 1>&2
88 rm -f "$TARGET"
89 STATUS=1
90 fi
91 }
92
93 gz_compr ()
94 { zcat "$1" | xz > "$TARGET"
95 # Keep PIPESTATUS
96 MY_STATUS=( ${PIPESTATUS[*]} )
97 src_err_msg "$1" ${MY_STATUS[0]}
98 if [[ "${MY_STATUS[1]}" != "0" ]]; then
99 echo "error while xz'ing !" 1>&2
100 STATUS=1
101 fi
102 }
103
104 bzip2_compr ()
105 { bzcat "$1" | xz > "$TARGET"
106 # Keep PIPESTATUS
107 MY_STATUS=( ${PIPESTATUS[*]} )
108 src_err_msg "$1" ${MY_STATUS[0]}
109 if [[ "${MY_STATUS[1]}" != "0" ]]; then
110 echo "error while xz'ing !" 1>&2
111 STATUS=1
112 fi
113 }
114
115 lzma_compr ()
116 { xzcat "$1" | xz > "$TARGET"
117 # Keep PIPESTATUS
118 MY_STATUS=( ${PIPESTATUS[*]} )
119 src_err_msg "$1" ${MY_STATUS[0]}
120 if [[ "${MY_STATUS[1]}" != "0" ]]; then
121 echo "error while xz'ing !" 1>&2
122 STATUS=1
123 fi
124 }
125
126 zip_compr ()
127 {
128 [[ -z "$TMPDIR" ]] && TMPDIR=$TMP
129 MY_TMP=$(mktemp -d $TMPDIR/xzme.XXXXXX)
130 unzip -qd $MY_TMP "$1"
131 src_err_msg "$1" $?
132 tar cfj "$TARGET" -C $MY_TMP .
133 if [[ $? != 0 ]]; then
134 echo "error while taring !" 1>&2
135 STATUS=1
136 fi
137 # Removing temporary files
138 rm -fr $MY_TMP
139 }
140
141 compress ()
142 { echo -n "Compressing $1 ... "
143 if [[ ! -f "$1" ]]; then
144 echo "Source file doesn't exist" 1>&2
145 return
146 fi
147 STATUS=0
148 SIZE=$(du -k "$1"|cut -f 1 -d " ")
149 if [[ -f "$TARGET" ]]; then
150 if [[ -n $force ]];then
151 rm -f "$TARGET"
152 else
153 echo "$TARGET already exists !!" 1>&2
154 echo "Use -f to force it"
155 return
156 fi
157 fi
158 # Do the real compression job
159 $METHOD "$1"
160 # if there was an error
161 if [[ $STATUS = 1 ]]; then
162 [[ -z $keep ]] && rm -f "$TARGET"
163 return
164 fi
165 # Compare size in order to only keep the smallest file
166 SIZE2=$(du -k "$TARGET"|cut -f 1 -d " ")
167 if [[ $SIZE -lt $SIZE2 && -z $force_compress ]]
168 then
169 echo "=> $TARGET is bigger than $1 ($SIZE"kb" => $SIZE2"kb") !!!"
170 echo "Use -F to force the recompression"
171 [[ -z $keep ]] && rm -f "$TARGET"
172 else
173 echo "=> $TARGET ($SIZE"kb" => $SIZE2"kb")"
174
175 [[ -z $keep ]] && rm -f "$1"
176 fi
177 }
178
179 while getopts Ffhk opt; do
180 case "$opt" in
181 F) force_compress="yes";;
182 f) force="yes";;
183 k) keep="yes";;
184 h)
185 echo "Usage: xzme [-Ffhk] file.*.({,t}gz|bz2|lzma|Z|zip)"
186 exit 1;;
187 *)
188 echo "See xzme -h for usage"
189 exit 1;;
190 esac
191 done
192 shift $((OPTIND - 1))
193
194 echo keeping: $keep
195
196 while [[ "$1" != "" ]]
197 do
198 #default method is .lzma,.bz2,.gz,.Z,.z,..
199 METHOD=gz_compr
200 case "$1" in
201 *.xz) echo "$1: already compressed!"; shift;continue;;
202 *.lzma) METHOD=lzma_compr
203 TARGET=${1%.lzma}.xz;;
204 *.bz2) METHOD=bzip2_compr
205 TARGET=${1%.tar.bz2}.tar.xz
206 ;;
207 *.tgz) TARGET=${1%.tgz}.txz;;
208 *.Z) TARGET=${1%.Z}.xz;;
209 *.gz) TARGET=${1%.gz}.xz;;
210 *.zip)
211 METHOD=zip_compr
212 TARGET=${1%.zip}.tar.xz
213 ;;
214 *) echo "$1: unknown file extension => ignored"; shift; continue;;
215 esac
216 compress "$1"
217 shift
218 done

Properties

Name Value
svn:executable *

  ViewVC Help
Powered by ViewVC 1.1.28