-#!/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 <framstag@rus.uni-stuttgart.de>
+#
+# 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 $ZZ versioning
+# 2016-09-12 added option -q quiet mode
-usage() {
- exec cat<<EOD
-ezz is the edit helper program for the generic zz clip board program.
-The clip board is \$ZZ (default: \$HOME/.zz). Options and modes are:
+use Getopt::Std;
+use File::Basename;
+use Digest::MD5 'md5_hex';
+use Cwd 'abs_path';
-"ezz" edit \$ZZ
-"... | ezz" write STDIN from pipe to \$ZZ and call editor
-"... | ezz +" add STDIN from pipe to \$ZZ and call editor
-"ezz 'perl-script'" run perl-script on \$ZZ
-"ezz - 'perl-script'" run perl-script on \$ZZ and write result to STDOUT
-"ezz filter [args]" run filter [with args] on \$ZZ
-"ezz - filter [args]" run filter [with args] on \$ZZ and write result to STDOUT
-"ezz -r" restore \$ZZ from last ezz operation (\$ZZ~)
+$prg = abs_path($0);
+$0 =~ s:.*/::;
+
+$ZZ = $ENV{ZZ} || "$ENV{HOME}/.zz";
+
+&install if $0 eq 'vvzz';
+&zz if $0 eq 'zz';
+&ezz if $0 eq 'ezz';
+
+# vv
+$usage = <<EOD;
+usage: $0 [-l] [file]
+ $0 -r . file
+ $0 -r version-number file [new-file]
+ $0 -d version-number[:version-number] file
+ $0 -v version-number file
+ $0 -s file
+ $0 -D file
+ $0 -e file
+ $0 -M file|.
+ $0 -L file|.
+ $0 -m [-R]
+ $0 -p
+ $0 -q
+ $0 -H
+options: -l list available versions
+ -v view version
+ -r recover file (. is last saved backup)
+ -d show diff
+ -s save file to new version
+ -D delete last saved version
+ -e edit file with \$EDITOR (with versioning)
+ -p purge orphaned versions (without current file)
+ -q quiet mode
+ -m migrate backup files to version files (-R all recursive)
+ -M migrate to more versions (upto 100)
+ -L migrate to less versions (upto 10)
+ -H show more information
+examples: $0 project.pl
+ $0 -d 2 project.pl
+ $0 -r 2 project.pl project_2.pl
+EOD
+
+$vvrc = $ENV{HOME} . '/.vvrc';
+
+$opt_l = 1;
+$opt_h = $opt_p = $opt_m = $opt_s = $opt_0 = $opt_e = $opt_H = $opt_b = 0;
+$opt_q = $opt_D = $opt_R = 0;
+$opt_r = $opt_d = $opt_v = $opt_M = $opt_L = '';
+${'opt_+'} = 0;
+getopts('hHls0bepqmRDrdv+M:L:') or die $usage;
+
+if ($opt_h) {
+ print $usage;
+ exit;
+}
+
+if ($opt_H) {
+ open $prg,$prg or die "$0: $prg - $!\n";
+ $_ = <$prg>;
+ $_ = <$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? ";
+ $_ = <STDIN>;
+ copy($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 $_;
+ local *V;
+
+ if (not @ARGV) {
+ if (-d '.versions' and open V,'ls -at .versions|') {
+ while (<V>) {
+ chomp;
+ if (-f) {
+ close V;
+ s/~\d+~$//;
+ @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 <silent> zz> :w !zz<CR><CR>
+# noremap <silent> zz< :r !zz --<CR>
+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 = <STDIN>||'';
+ 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;
+}
projects / fex.git / blobdiff