X-Git-Url: https://git.treefish.org/fex.git/blobdiff_plain/7fa382617fbaccc0ce522b2b3adbbee9db5ad227..20160919:/bin/ezz diff --git a/bin/ezz b/bin/ezz index c15ece3..39dc91e 100755 --- a/bin/ezz +++ b/bin/ezz @@ -1,56 +1,1042 @@ -#!/bin/sh +#!/usr/bin/perl -w +# +# vv : visual versioning +# zz : generic shell clip board +# ezz : clip board editor +# +# http://fex.rus.uni-stuttgart.de/fstools/vv.html +# http://fex.rus.uni-stuttgart.de/fstools/zz.html +# +# by Ulli Horlacher +# +# Perl Artistic Licence +# +# vv is a script to handle file versions: +# list, view, recover, diff, purge, migrate, save, delete +# +# vv is an extension to emacs idea of backup~ files +# +# File versions are stored in local subdirectory .versions/ +# +# To use vv with jed, install to your jed library path: +# +# http://fex.rus.uni-stuttgart.de/sw/share/jedlib/vv.sl +# +# To use vv with vim, add to your .vimrc: +# +# autocmd BufWritePre * execute '! vv -s ' . shellescape(@%) +# autocmd BufWritePost * execute '! vv -b ' . shellescape(@%) +# +# To use vv with emacs, add to your .emacs: +# +# (add-hook 'before-save-hook (lambda () (shell-command ( +# concat "vv -s " (shell-quote-argument (buffer-file-name)))))) +# (add-hook 'after-save-hook (lambda () (shell-command ( +# concat "vv -b " (shell-quote-argument (buffer-file-name)))))) +# (setq make-backup-files nil) +# +# To use vv with ANY editor, first set: +# +# export EDITOR=your_favourite_editor +# alias ve='vv -e' +# +# and then edit your file with: +# +# ve file +# +# $HOME/.vvrc is the config file for vv -ZZ=${ZZ:-$HOME/.zz} +# 2013-04-15 initial version +# 2013-04-16 added options -m and -v +# 2013-04-18 added option -s +# 2013-04-22 realfilename() fixes symlink problematics +# 2013-04-22 use rsync instead of cp +# 2013-04-23 added option -I +# 2013-04-23 renamed from jedv to vv +# 2013-04-24 added options -e -0 +# 2013-05-09 added option -R +# 2013-05-22 modified option -d to double argument +# 2013-05-22 added vvrc with $exclude and @diff +# 2013-07-05 fixed bug potential endless loop in rotate() +# 2014-04-16 added change-file-test for opt_s (needs .versions/$file) +# 2014-04-18 added option -b : save backup +# 2014-05-02 fixed bug wrong file ownership when using as root +# 2014-06-18 options -r -d -v : parameter is optional, default is 1 +# 2014-06-18 fixed (stupid!) bug option -s does only sometimes saving +# 2014-06-20 options -d -v : argument is optional, default is last file +# 2014-07-22 fixed bug no (new) backup version 0 on option -r +# 2014-11-14 added option -D : delete last saved version +# 2014-11-14 make .versions/ mode 777 if parent directory is world writable +# 2015-03-19 allow write access by root even if file and .versions/ have different owners +# 2015-03-20 better error formating for jed +# 2015-06-02 added option -r . to restore last saved backup +# 2016-03-07 added options -M -L +# 2016-03-08 renamed option -I to -H +# 2016-05-02 added -A option to preserve ACLs with rsync +# 2016-06-07 option -v : use PAGER=cat if STDOUT is not a tty +# 2016-06-08 added zz, ezz and installer vvzz +# 2016-07-06 avoid empty $ZZ versioning +# 2016-09-12 added option -q quiet mode -usage() { - exec cat<; + $_ = <$prg>; + while (<$prg>) { + last if /^\s*$/ or /^#\s*\d\d\d\d-\d\d-\d\d/; + print; + } + exit; +} + +if ($opt_r) { + die "usage: $0 -r version-number file\n" unless @ARGV; + if ($ARGV[0] =~ /^(\d\d?|\.)$/) { $opt_r = shift } + else { $opt_r = 1 } + die "usage: $0 -r version-number file\n" if scalar @ARGV != 1; +} + +if ($opt_d) { + if (@ARGV and $ARGV[0] =~ /^\d\d?(:\d\d?)?$/) { $opt_d = shift } + else { $opt_d = 1 } + &check_ARGV; + die "usage: $0 -d version-number file\n" unless @ARGV; +} + +if ($opt_v) { + if (@ARGV and $ARGV[0] =~ /^\d\d?$/) { $opt_v = shift } + else { $opt_v = 1 } + &check_ARGV; + die "usage: $0 -v version-number file\n" unless @ARGV; +} + +if ($0 eq 've' or $opt_e) { + $a = pop @ARGV or die $usage; + $opt_e = 1; +} else { + $a = shift @ARGV; + die $usage if not $opt_r and @ARGV; +} + +unless (-e $vvrc) { + open $vvrc,'>',$vvrc or die "$0: cannot write $vvrc - $!\n"; + print {$vvrc} q{ +$exclude = q( + \.tmp$ + ^mutt-.+-\d+ + ^#.*#$ +); + +@diff = qw'diff -u'; + +}; + close $vvrc; +} + +require $vvrc; + +if ($a) { + + $file = realfilename($a); + $ofile = "$file~"; + $bfile = basename($file); + $dir = dirname($file); + $vdir = "$dir/.versions"; + $vfile = "$vdir/$bfile"; + $vfile0 = "$vfile~0~"; + $vfile1 = "$vfile~1~"; + $vfile01 = "$vfile~01~"; + + # change eugid if root and version directory belongs user + my @s = stat($vdir); + if ($> == 0 and (not @s or $s[4])) { + if (my @s = stat($a)) { + $) = $s[5]; + $> = $s[4]; + } + } + + if ($opt_r ne '.' and not ($opt_M or $opt_L)) { + if (not -e $file and -s $vfile) { + warn "$0: $a does not exist any more\n"; + print "found $vfile - recover it? "; + $_ = ; + copy($vfile,$file,'.') if /^y/i; + exit 0; + } + die "$0: $a does not exist\n" unless -e $file; + die "$0: $a is not a regular file\n" if -l $file or not -f $file; + } +} else { + $file = '*'; + $vdir = ".versions"; +} + +if ($opt_M) { + if (-d $opt_M and not -l $opt_M) { + my $vvv = "$opt_M/.versions"; + mkdir $vvv; + die "$0: cannot mkdir $vvv - $!\n" unless -d $vvv; + opendir $vvv,$vvv or die "$0: cannot opendir $vvv - $!\n"; + while (my $v = readdir($vvv)) { + mv100("$opt_M/$1") if -f "$vvv/$v" and $v =~ /(.+)~1~$/; + } + close $vvv; + $vvv .= "/.versions"; + unless (-d $vvv) { + mkdir $vvv or die "$0: cannot mkdir $vvv - $!\n"; + } + $vvv .= "/n"; + unlink $vvv; + symlink 100,$vvv or die "$0: cannot create $vvv - $!\n"; + } else { + die "usage: $0 -M file\n" if @ARGV or $opt_r; + mv100($opt_M); + } + exit; +} + +if ($opt_L) { + if (-d $opt_L and not -l $opt_L) { + my $vvv = "$opt_L/.versions"; + mkdir $vvv; + die "$0: cannot mkdir $vvv - $!\n" unless -d $vvv; + opendir $vvv,$vvv or die "$0: cannot opendir $vvv - $!\n"; + while (my $v = readdir($vvv)) { + mv10("$opt_L/$1") if -f "$vvv/$v" and $v =~ /(.+)~01~$/; + } + closedir $vvv; + $vvv .= "/.versions"; + unless (-d $vvv) { + mkdir $vvv or die "$0: cannot mkdir $vvv - $!\n"; + } + $vvv .= "/n"; + unlink $vvv; + symlink 10,$vvv or die "$0: cannot create $vvv - $!\n"; + } else { + die "usage: $0 -L file\n" if @ARGV or $opt_r; + mv10($opt_L); + } + exit; +} + +if ($opt_e) { + die $usage unless $a; + $editor = $ENV{EDITOR} or die "$0: environment variable EDITOR not set\n"; + system(qw'vv -s',$file) if -f $file; # save current version + system($editor,@ARGV,$file); exit $? if $?; + unlink $ofile; # delete new file~ created by editor + system(qw'vv -0',$file); # post rotating + system(qw'vv -b',$file); # save backup + exit; +} + +if ($opt_v) { + die "$0: no such file $bfile\n" unless $bfile; + if (-f "$vfile~0$opt_v~") { $vfile .= "~0$opt_v~" } + else { $vfile .= "~$opt_v~" } + if (-f $vfile) { + if (-t STDOUT) { + if (($ENV{EDITOR}||$0) =~ /jed/) { + $ENV{JEDINIT} = "SAVE_STATE=0"; + exec 'jed',$vfile,qw'-tmp -f set_readonly(1)'; + } elsif ($ENV{PAGER}) { + exec $ENV{PAGER},$vfile; + } else { + exec 'view',$vfile; + } + } else { + exec 'cat',$vfile; + } + } else { + die "$0: no $vfile\n"; + } + exit; +} + +if ($opt_p) { + opendir $vdir,$vdir or die "$0: no $vdir\n"; + while ($vfile = readdir($vdir)) { + next unless -f "$vdir/$vfile"; + $bfile = $vfile; + $bfile =~ s/~\d\d?~$//; + if (not -f $bfile or -l $bfile) { + unlink "$vdir/$vfile"; + $purge{$bfile}++; + } + } + if (@purge = keys %purge) { + foreach $p (@purge) { + printf "%2d %s~ purged\n",$purge{$p},$p; + } + } + exit; +} + +if ($opt_m) { + migrate('.'); + exit; +} + +if (length($opt_r)) { + die "$0: no such file $bfile\n" unless $bfile; + if ($opt_r eq '.') { + die "$0: no $vfile\n" unless -f $vfile; + copy($vfile,$file,$opt_r); + } else { + if ($opt_r =~ /^\d$/ and -f "$vfile~0$opt_r~") { + $vfile .= "~0$opt_r~" + } else { + $vfile .= "~$opt_r~" + } + die "$0: no version $opt_r for $file\n" unless -f $vfile; + if ($nfile = shift @ARGV) { + copy($vfile,$nfile); + } else { + copy($file,$vfile0) if mtime($file) > mtime($vfile0); + copy($vfile,$file); + } + } + exit; +} + +if (length($opt_d)) { + die "$0: no such file $bfile\n" unless $bfile; + @diff = qw'diff -u' unless @diff; + if ($opt_d =~ /^(\d\d?):(\d\d?)$/) { + if (-f "$vdir/$bfile~0$1~" and -f "$vdir/$bfile~0$2~") { + exec @diff,"$vdir/$bfile~0$2~","$vdir/$bfile~0$1~" + } else { + exec @diff,"$vdir/$bfile~$2~","$vdir/$bfile~$1~" + } + } else { + if (-f "$vdir/$bfile~0$opt_d~") { + exec @diff,"$vdir/$bfile~0$opt_d~",$file; + } else { + exec @diff,"$vdir/$bfile~$opt_d~",$file; + } + } + exit $!; +} + +if ($opt_s) { + die $usage unless $file; + if ($exclude) { + $exclude =~ s/^\s+//; + $exclude =~ s/\s+$//; + $exclude =~ s/\s+/|/g; + if ($bfile =~ /$exclude/) { + warn "\r\n$0: ignoring $bfile\n"; + exit; + } + } + unless (-d $vdir) { + mkdir $vdir or die "$0: cannot mkdir $vdir - $!\n"; + } + chmod 0777,$vdir if (stat $dir)[2] & 00002; + + # migrate old file~ to versions + if (-f $ofile and not -l $ofile and -r $ofile) { + $vfn = rotate($vfile); + rename($ofile,$vfn); + } + + # rotate and save if file has changed + if (-f $vfile1) { + if (md5f($vfile1) ne md5f($file)) { + $vfn = rotate($vfile); + copy($file,$vfn); + } + exit; + } + # rotate and save if file has changed + if (-f $vfile01) { + if (md5f($vfile01) ne md5f($file)) { + $vfn = rotate($vfile); + copy($file,$vfn); + } + exit; + } + # save new file + if ((readlink("$vdir/.versions/n")||10) == 100) { + copy($file,$vfile01); + } else { + copy($file,$vfile1); + } + exit; +} + +# backup version +if ($opt_b) { + die $usage unless $file; + unless (-d $vdir) { + mkdir $vdir or die "\r\n$0: cannot mkdir $vdir - $!\n"; + } + copy($file,$vfile); + if ($ENV{VIMRUNTIME}) { + print "\n"; + } else { + warn "$file --> $vfile\n" unless $opt_q; + } + exit; +} + +# special post rotating from -e +if ($opt_0) { + my @sb = stat $file or die "$0: $file - $!\n"; + if (-f $vfile1) { + while (my @sv = stat $vfile1) { + # no version change? + if ($sb[7] == $sv[7] and $sb[9] == $sv[9]) { + # rotate back + rb10($vfile); + } else { + last; + } + } + } + if (-f $vfile01) { + while (my @sv = stat $vfile01) { + # no version change? + if ($sb[7] == $sv[7] and $sb[9] == $sv[9]) { + # rotate back + rb10($vfile); + } else { + last; + } + } + } + exit; +} + +# delete last version, roll back +if ($opt_D) { + die "usage: $0 -D file\n" unless $vfile1 or $vfile01; + stat $file or die "$0: $file - $!\n"; + # 0 version? + if (-f $vfile0) { + unlink $vfile0; + } else { + # rotate back + rb10($vfile) if -f $vfile1; + rb100($vfile) if -f $vfile01; + } + exec $0,'-l',$file; + exit; +} + +# default! +if ($opt_l) { + `stty -a` =~ /columns (\d+)/; + $tw = ($1 || 80)-36; + if (opendir $vdir,$vdir) { + while ($vfile = readdir($vdir)) { + if (-f "$vdir/$vfile") { + if ($bfile) { + if ($vfile =~ /^\Q$bfile\E~(\d\d?)~$/) { + push @{$v{$file}},$1; + } + } else { + if ($vfile =~ /^(.+)~(\d\d?)~$/) { + push @{$v{$1}},$2; + } else { + push @{$v{$vfile}},0; + } + } + } + } + closedir $vdir; + $ct = ''; + foreach $file (sort keys %v) { + if (not -f $file or -l $file) { + warn "$0: orphaned $file~\n"; + next; + } + @v = sort @{$v{$file}}; + if ($bfile) { + @stat = stat $file or die "$0: $file - $!\n"; + print "version bytes date time"; + if (${'opt_+'}) { + print " content"; + $ct = content($file); + $ct =~ s/(.{$tw}).+/$1*/; + } + print "\n"; + if (length($v[0]) == 1) { $lf = "%s %10s %s %s\n" } + else { $lf = "%2s %10s %s %s\n" } + printf $lf,'.',size($stat[7]),isodate($stat[9]),$ct; + foreach $v (@v) { + $vfile = "$vdir/$bfile~$v~"; + @stat = stat $vfile or next; + if (${'opt_+'}) { + $ct = content($vfile); + $ct =~ s/(.{$tw}).+/$1*/; + } + printf $lf,int($v),size($stat[7]),isodate($stat[9]),$ct; + } + } else { + my $n = scalar(@v); + $n-- if $v[0] == 0; # do not count zero version + printf "%d %s\n",$n,$file; + } + } + } + exit; +} + + +sub size { + my $s = shift; + if ($s > 9999999999) { $s = int($s/2**30).'G' } + elsif ($s > 9999999) { $s = int($s/2**20).'M' } + elsif ($s > 9999) { $s = int($s/2**10).'k' } + return $s; +} + + +sub content { + my $file = shift; + my $ct; + local $_; + + chomp ($ct = `file $file`); + $ct =~ s/.*?: //; + $ct =~ s/,.*//; + + if ($ct =~ /text/ and open $file,$file) { + read $file,$_,1024; + close $file; + s/[\x00-\x20]+/ /g; + s/^ //; + s/ $//; + $ct = '"'.$_.'"'; + } + + return $ct; +} + + +sub isodate { + my @d = localtime shift; + return sprintf('%d-%02d-%02d %02d:%02d:%02d', + $d[5]+1900,$d[4]+1,$d[3],$d[2],$d[1],$d[0]); +} + +sub rotate { + my $vf = shift; # version base file + my $vf1 = "$vf~1~"; + my $vf01 = "$vf~01~"; + my ($vfi,$vfn); + + if (-f $vf1) { + for (my $i = 8; $i >= 0; $i--) { + $vfi = sprintf("%s~%d~",$vf,$i); + $vfn = sprintf("%s~%d~",$vf,$i+1); + if (-e $vfi) { + rename $vfi,$vfn or die "$0: $vfi --> $vfn : $!\n"; + } + } + # was there a version 0? + if (-e $vf1) { + my $bf = $vf; + $bf =~ s:/\.versions/:/:; + my @sb = stat $bf; + my @sv = stat $vf1; + # version change? (other size or mtime) + if (@sb and @sv and $sb[7] == $sv[7] and $sb[9] == $sv[9]) { + # same version + unlink $vf1; + } else { + # other version + rotate($vf); + } + } + return "$vf~1~"; + } elsif (-f $vf01) { + for (my $i = 98; $i >= 0; $i--) { + $vfi = sprintf("%s~%02d~",$vf,$i); + $vfn = sprintf("%s~%02d~",$vf,$i+1); + if (-e $vfi) { + rename $vfi,$vfn or die "$0: $vfi --> $vfn : $!\n"; + } + } + # was there a version 0? + if (-e $vf01) { + my $bf = $vf; + $bf =~ s:/\.versions/:/:; + my @sb = stat $bf; + my @sv = stat $vf01; + # version change? (other size or mtime) + if (@sb and @sv and $sb[7] == $sv[7] and $sb[9] == $sv[9]) { + # same version + unlink $vf01; + } else { + # other version + rotate($vf); + } + } + return "$vf~01~"; + } + + return "$vf~1~"; +} + +sub copy { + my ($from,$to,$restore) = @_; + + unless ($restore) { + if (-l $file or not -f $file) { + die "$0: $file is not a regular file\n"; + } + } + + if (open $to,'>>',$to) { + close $to; + if (system(qw'rsync -aA',$from,$to) == 0) { + if ($ENV{VIMRUNTIME}) { + print "\n"; + } else { + warn "$from --> $to\n" unless $opt_q; + } + } else { + exit $?; + } + } else { + die "\r\n$0: cannot write $to - $!\n"; + } +} + +sub realfilename { + my $file = shift; + + return $file unless -e $file; + + if (-l $file) { + my $link = readlink($file); + if ($link !~ /^\// and $file =~ m:(.*/).:) { + $link = $1 . $link; + } + return realfilename($link); + } else { + return $file; + } +} + +sub migrate { + my $dir = shift; + my $vdir = "$dir/.versions"; + my $dfile; + + opendir $dir,$dir or die "$0: cannot read directory $dir - $!\n"; + while ($file = readdir($dir)) { + $dfile = "$dir/$file"; + next if -l $dfile or $file eq '.' or $file eq '..'; + if (-d $dfile and $opt_R and $file ne '.versions') { + migrate($dfile); + } elsif (-f $dfile and $file =~ /~$/) { + if (-d $vdir) { + for ($i = 8; $i > 0; $i--) { + $n = $i+1; + rename "$vdir/$file$i~","$vdir/$file$n~"; + } + } else { + mkdir $vdir or die "$0: cannot mkdir $vdir - $!\n"; + } + $nfile = sprintf("%s/%s1~",$vdir,$file); + rename $dfile,$nfile or die "$0: cannot move $dfile to $nfile - $!\n"; + warn "$dfile --> $nfile\n" unless $opt_q; + } + } + closedir $dir; +} + +sub mtime { + my @s = stat shift; + return @s ? $s[9] : 0; +} + +sub md5f { + my $file = shift; + my $md5 = 0; + local $/; + + if (open $file,$file) { + $md5 = md5_hex(<$file>); + close $file; + } + return $md5; +} + + +# if ARGV is empty use last saved file as default file argument +sub check_ARGV { + local $_; + local *V; + + if (not @ARGV) { + if (-d '.versions' and open V,'ls -at .versions|') { + while () { + chomp; + if (-f) { + close V; + s/~\d+~$//; + @ARGV = ($_); + return; + } + } + } + } + +} + + +sub mv10 { + my $file = shift; + my $vfile = dirname($file).'/.versions/'.basename($file); + + die "$0: $file has no extended versions\n" unless -f "$vfile~01~"; + for (my $i=1; $i<10; $i++) { + my $vfile1 = "$vfile~$i~"; + my $vfile2 = "$vfile~0$i~"; + if (-f $vfile2) { + warn "$vfile2 --> $vfile1\n" unless $opt_q; + rename $vfile2,$vfile1 or die "$0: $!\n"; + } + } + for (my $i=10; $i<100; $i++) { + unlink "$vfile~$i~"; + } +} + +sub mv100 { + my $file = shift; + my $vfile = dirname($file).'/.versions/'.basename($file); + + die "$0: $file has already extended versions\n" if -f "$vfile~01~"; + die "$0: $file has no versions\n" unless -f "$vfile~1~"; + for (my $i=1; $i<10; $i++) { + my $vfile1 = "$vfile~$i~"; + my $vfile2 = "$vfile~0$i~"; + if (-f $vfile1) { + warn "$vfile1 --> $vfile2\n" unless $opt_q; + rename $vfile1,$vfile2 or die "$0: $!\n"; + } + } +} + + +# rotate back +sub rb10 { + my $vfile = shift; + + for (my $i = 1; $i <= 8; $i++) { + my $vfi = sprintf("%s~%d~",$vfile,$i); + my $vfn = sprintf("%s~%d~",$vfile,$i+1); + if (-f $vfn) { + rename $vfn,$vfi; + } else { + unlink $vfi if $i == 1; + last; + } + } +} + + +# rotate back +sub rb100 { + my $vfile = shift; + + for (my $i = 1; $i <= 98; $i++) { + my $vfi = sprintf("%s~%02d~",$vfile,$i); + my $vfn = sprintf("%s~%02d~",$vfile,$i+1); + if (-f $vfn) { + rename $vfn,$vfi; + } else { + unlink $vfi if $i == 1; + last; + } + } +} + + + +sub pathsearch { + my $prg = shift; + + foreach my $dir (split(':',$ENV{PATH})) { + return "$dir/$prg" if -x "$dir/$prg"; + } +} + + +# zz is the generic clip board program +# +# to use zz with vim, write to your .vimrc: +# +# noremap zz> :w !zz +# noremap zz< :r !zz -- +sub zz { + my $bs = 2**16; + my $wm = '>'; + my ($file,$tee,$x); + + if ("@ARGV" =~ /^(-h|--help)$/) { + print <<'EOD'; +zz is the generic clip board program. It can hold any data, ASCII or binary. +The clip board itself is $ZZ (default: $HOME/.zz). +See also the clip board editor "ezz". +Limitation: zz does not work across accounts or hosts! Use xx instead. + +Options and modes are: + + "zz" show content of $ZZ + "zz file(s)" copy file(s) content into $ZZ + "zz -" write STDIN (keyboard, mouse buffer) to $ZZ + "zz +" add STDIN (keyboard, mouse buffer) to $ZZ + "... | zz" write STDIN from pipe to $ZZ + "... | zz +" add STDIN from pipe to $ZZ + "... | zz -" write STDIN from pipe to $ZZ and STDOUT + "zz | ..." write $ZZ to pipe + "... | zz | ..." save pipe data to $ZZ (like tee) + "zz --" write $ZZ to STDOUT + "zz -v" show clip board versions (history) + "zz -1" write $ZZ version 1 to STDOUT + "zz -9" write $ZZ version 9 to STDOUT + +Examples: + + zz *.txt + ls -l | zz + zz | wc -l + (within vi) :w !zz + (within vi) :r !zz + (within mutt) |zz +EOD + exit; + } + + if ("@ARGV" eq '-v') { + exec qw'vv -+l',$ZZ; + } + + if ("@ARGV" =~ /^-(\d)$/) { + exec "vv -v $1 '$ZZ' | cat"; + } + + # read mode + if (-t STDIN and not @ARGV or "@ARGV" eq '--') { + exec 'cat',$ZZ; + } + + # write mode + system "vv -s '$ZZ' >/dev/null 2>&1" if -s $ZZ; + + if (@ARGV and $ARGV[0] eq '+') { + shift @ARGV; + $wm = '>>'; + } + + if ("@ARGV" eq '-') { + @ARGV = (); + $tee = 1 unless -t STDIN; + } + + $tee = 1 unless @ARGV or -t STDIN or -t STDOUT; + $bs = 2**12 if $tee; + + open $ZZ,$wm,$ZZ or die "$0: cannot write $ZZ - $!\n"; + + if (@ARGV) { + while ($file = shift @ARGV) { + if (-f $file) { + if (open $file,$file) { + while (read($file,$x,$bs)) { + my $s = syswrite $ZZ,$x; + defined($s) or die "$0: cannot write to $ZZ - $!\n"; + } + close $file; + } else { + warn "$0: cannot read $file - $!\n"; + } + } elsif (-e $file) { + warn "$0: $file is not a regular file\n"; + } else { + warn "$0: $file does not exist\n"; + } + } + close $ZZ; + $ZZ1 = $ZZ.'~1~'; + $ZZ1 =~ s:(.*)/(.*):$1/.versions/$2:; + if (-e $ZZ and not -s $ZZ and -s $ZZ1 ) { + system qw'rsync -aA',$ZZ1,$ZZ; + } + } else { + while (read(STDIN,$x,$bs)) { + syswrite $ZZ,$x; + syswrite STDOUT,$x if $tee; + } + } + + exit; +} + + +sub ezz { + my $bs = 2**16; + my $wm = '>'; + my $editor = $ENV{EDITOR} || 'vi'; + my ($out,$file,$x); + + $ENV{JEDINIT} = "SAVE_STATE=0"; + + if ("@ARGV" =~ /^(-h|--help)$/) { + print <<'EOD'; +ezz is the edit helper for the zz clip board program. +The clip board itself is $ZZ (default: $HOME/.zz). + +Options and modes are: + + "ezz" edit $ZZ with $EDITOR + "... | ezz" write STDIN from pipe to $ZZ and call $EDITOR + "... | ezz +" add STDIN from pipe to $ZZ and call $EDITOR + "ezz 'perl commands'" execute perl commands on $ZZ + "ezz - 'perl commands'" execute perl commands on $ZZ and show result + "ezz filter [args]" run filter [with args] on $ZZ + "ezz - filter [args]" run filter [with args] on $ZZ and show result Examples: ls -l | ezz - ezz "s/ /_/g" + ezz 's/ /_/g' ezz head -3 ezz - head -3 - -Limitation: zz does not work across different accounts! EOD + exit; + } + + system "vv -s '$ZZ' >/dev/null 2>&1" if -s $ZZ; + + unless (-t STDIN) { + if ("@ARGV" eq '+') { + @ARGV = (); + $wm = '>>'; + } + open $ZZ,$wm,$ZZ or die "$0: cannot write $ZZ - $!\n"; + syswrite $ZZ,$x while read(STDIN,$x,$bs); + close $ZZ; + } + + if (@ARGV) { + $out = shift @ARGV if $ARGV[0] eq '-'; + $cmd = shift @ARGV or exec 'cat',$ZZ; + rename $ZZ,"$ZZ~" or die "$0: cannot move $ZZ to $ZZ~ - $!\n"; + $cmd = quotemeta $cmd; + @ARGV = map { quotemeta } @ARGV; + if (pathsearch($cmd)) { + system "$cmd @ARGV <'$ZZ~'>'$ZZ'"; + } else { + system "perl -pe $cmd @ARGV <'$ZZ~'>'$ZZ'"; + } + if ($? == 0) { unlink "$ZZ~" } + else { rename "$ZZ~",$ZZ } + exec 'cat',$ZZ if $out; + } else { + exec $editor,$ZZ; + } + exit; } -JEDINIT="SAVE_STATE=0"; export JEDINIT - -if [ ! -t 0 ]; then - if [ x"$1"x = x+x ]; then - shift - cat >>$ZZ - else - cat >$ZZ - fi -fi - -test -z "$1" && exec ${EDITOR:-vi} $ZZ - -case "X$*" in - X-h) usage;; - X-r) exec mv $ZZ~ $ZZ;; -esac - -OUT="$1" -test "X$OUT" = X- && shift -test -z "$1" && exec cat $ZZ -mv $ZZ $ZZ~ -case `type "$1" 2>&1` in - *not\ found) perl -pe "$@" <$ZZ~>$ZZ || mv $ZZ~ $ZZ;; - *) "$@" <$ZZ~>$ZZ || mv $ZZ~ $ZZ;; -esac -test "X$OUT" = X- && exec cat $ZZ + +sub install { + my ($dir); + local $| = 1; + + print "Installation directory: "; + $dir = ||''; + chomp $dir; + $dir =~ s:/+$::; + $dir ||= '.'; + if ($dir eq '.') { + unlink qw'zz ezz vv'; + link $prg,'zz' or die "$0: cannot create zz - $!\n"; + link $prg,'ezz' or die "$0: cannot create ezz - $!\n"; + rename $prg,'vv' or die "$0: cannot create vv - $!\n"; + } else { + die "$0: $dir does not exist\n" unless -e $dir; + die "$0: $dir is not a directory\n" unless -d $dir; + die "$0: $dir is not writable\n" unless -w $dir; + chdir $dir or die "$0: cannot cd $dir - $!\n"; + unlink qw'zz ezz vv'; + system qw'rsync -a',$prg,'vv'; + exit $? if $?; + link 'vv','zz' or die "$0: cannot create $dir/zz - $!\n"; + link 'vv','ezz' or die "$0: cannot create $dir/ezz - $!\n"; + } + print "Installation completed. See:\n"; + print "\t$dir/vv -h\n"; + print "\t$dir/zz -h\n"; + print "\t$dir/ezz -h\n"; + exit; +}