4 # LHa Virtual filesystem executive v0.1
5 # Copyright (C) 1996, 1997 Joseph M. Hinkle
6 # May be distributed under the terms of the GNU Public License
7 # <jhinkle@rockisland.com>
10 # Code for mc_lha_fs_run() suggested by:
11 # Jan 97 Zdenek Kabelac <kabi@informatics.muni.cz>
13 # Tested with mc 3.5.18 and gawk 3.0.0 on Linux 2.0.0
14 # Tested with lha v1.01 and lharc v1.02
15 # Information and sources for other forms of lha/lzh appreciated
18 # There are several compression utilities which produce *.lha files.
19 # LHArc and LHa in exist several versions, and their listing output varies.
20 # Another variable is the architecture on which the compressed file was made.
21 # This program attempts to sort out the variables known to me, but it is likely
22 # to display an empty panel if it encounters a mystery.
23 # In that case it will be useful to execute this file from the command line:
24 # ./lha list Mystery.lha
25 # to examine the output directly on the console. The output string must be
26 # precisely in the format described in the README in this directory.
27 # Another helpful thing is to temporarily remove the redirection of error
28 # output of awk (The '2> /dev/null' instruction near the end of mcfs_list())
29 # The screen will get ugly if there's an error, but some useful text shows
30 # at the bottom of the screen.
37 if ls -de . >& /dev/null;
41 LS_COMMAND="ls -l --full-time"
44 # Define which archiver you are using with appropriate options
49 # Define a directory to create a temporary file for when
50 # running a command to be run from the archive
52 # Temporary file within the directory
55 # The 'list' command executive
59 # Get the year of the file timestamp in case we need to replace 'hh:mm'
60 YEAR=$($LS_COMMAND $1 | $AWK '{ print $10 }')
61 # List the contents of the archive and sort it out
62 $LHA_LIST $1 | $AWK -v uid=$(id -nu) -v gid=$(id -ng) -v year=$YEAR '
63 # Ignore the annotations, quit on the last one
67 # Strip a leading '/' if present in a filepath
68 $(NF) ~ /^\// { $(NF) = substr($NF,2) }
69 # Replace the year stamp if it is expressed as 'hh:mm'
70 $(NF-1) ~ /\:/ { $(NF-1) = year }
71 # Print the line this way if there is no permission string
73 # Invent a generic permission
74 $1 = ($10 ~ /\/$/) ? "drwxr-xr-x":"-rwxr--r--";
76 printf "%s 1 %-8s %-8s %-8d %3s %2d %4d %s\n",
77 $1, uid, gid, $2, $4, $5, $6, $7;
78 # Get the next line of the list
81 # Do it this way for a defined permission
82 $1 !~ /^\[generic\]/ {
83 # If the permissions and UID run together
93 # If the permission string is missing a type
94 if (length($1) == 9) {
100 # UID:GID might not be the same as on your system so print numbers
101 # Well, that is the intent. At the moment mc is translating them.
103 printf "%s 1 %-8d %-8d %-8d %3s %2d %4d %s\n",
104 $1, id[1], id[2], $3, $5, $6, $7, $8;
105 # Get the next line of the list
112 # The 'copyout' command executive to copy displayed files to a destination
116 $LHA_GET $1 $2 > $3 2> /dev/null
119 # The 'copyin' command executive to add something to the archive
123 NAME2=`basename $2`; DIR2=${2%$NAME2}
124 NAME3=`basename $3`; DIR3=${3%$NAME3}
129 [ -n ${ONE2} ] || exit
130 [ -e ${ONE2} ] && exit
132 [ -e ${DIR2} ] || mkdir -p ${DIR2}
135 $LHA_PUT $1 $2 2> /dev/null
139 # The 'run' command executive to run a command from within an archive
143 trap "rm $TMPCMD; rmdir $TMPDIR; exit 0" 1 2 3 4 15
144 # FIXME bugzilla.eazel.com 1225: Try harder to generate a unique directory if this fails
145 mkdir -m 0700 $TMPDIR || exit 1
146 $LHA_GET $1 $2 > $TMPCMD 2> /dev/null
147 chmod a+x $TMPCMD 2> /dev/null
158 list) mc_lha_fs_list $2; exit $?;;
159 copyout) mc_lha_fs_copyout $2 $3 $4; exit $?;;
160 copyin) mc_lha_fs_copyin $2 $3 $4; exit $?;;
161 run) mc_lha_fs_run $2 $3 $4; exit $?;;