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#!/usr/bin/perl
# parse the arguments:
# file-replace [options] [--] filename[s]|dir[s]
# --in-pattern="search for"
# --out-pattern="replace with"
# --in-pattern-file="file"
# --out-pattern-file="file"
# --no-recurse
# --no-directories
my $search;
my $replace;
my $argflag;
my @infiles;
my $norecurse;
my $nodirs;
my$pwd=`pwd`;
chomp($pwd);
foreach $arg (@ARGV){
if($arg eq "--"){
$argflag=1;
next;
}
if(!$argflag && $arg=~/--([^=]*)=(.*)/){
my$key=$1;
my$val=$2;
if($key eq "in-pattern"){
$search=$val;
next;
}
if($key eq "out-pattern"){
$replace=$val;
next;
}
if($key eq "in-pattern-file"){
die "Could not open file $val: $!" unless open(F,"$val");
undef $/;
$search=<F>;
$/="\n";
close(F);
next;
}
if($key eq "out-pattern-file"){
die "Could not open file $val: $!" unless open(F,"$val");
undef $/;
$replace=<F>;
$/="\n";
close(F);
next;
}
print "Unknown option --$key\n";
exit(1);
}
if(!$argflag && $arg=~/--(.*)/){
if($key eq "no-recurse"){
$norecurse;
next;
}
if($key eq "no-directories"){
$nodirs=1;
next;
}
print "Unknown option --$key\n";
exit(1);
}
push @infiles, ($arg);
}
&recursive_doit($pwd,@infiles);
sub recursive_doit{
my($pwd,@globlist)=@_;
my @dirs;
my @files;
# seperate files from directories
foreach $file (@globlist){
if(-d $file){
push @dirs,($file);
next;
}
if(-f $file){
push @files,($file);
next;
}
print "$pwd/$file is not a plain file or directory.\n";
}
# Are we called on a directory? recurse?
if(!$nodirs){
# fork into each dir with all but the original path ar
foreach $dir (@dirs){
if(fork){
wait; # don't hose the box ;-)
}else{
die "Could not chdir to $pwd/$dir: $!\n" unless chdir $dir;
$pwd.="/$dir";
# open and read the dir
die "Could not read directory $pwd: $!\n" unless
opendir (D,".");
#ignore dotfiles
@globlist=grep { /^[^\.]/ && !(-l "$_") } readdir(D);
closedir(D);
$nodirs=$norecurse;
recursive_doit($pwd,@globlist);
exit(0);
}
}
}
foreach $file (@files){
if (open(F,$file)){
undef $/;
my$body=<F>;
$/="\n";
close(F);
# do the regexp
if($body=~s{$search}{$replace}g){
print "Performed substitution on $pwd/$file\n";
# replace with modified file
my$tempfile="file-replace-tmp_$$";
die $! unless open(F,">$tempfile");
syswrite F,$body;
close(F);
die "Unable to replace modified file $file: $!\n" unless
rename($tempfile,$file);
unlink $tempfile;
}
}else{
print "Could not open $pwd/$file: $!\n";
}
}
exit(0);
}