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#!/usr/bin/perl |
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use File::Rdiff qw(:trace :nonblocking); |
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trace_level(LOG_INFO); |
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if ($ARGV[0] eq "signature") { |
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open $basis, "<", $ARGV[1] |
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or die "$ARGV[1]: $!"; |
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open $sig, ">", $ARGV[2] |
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or die "$ARGV[2]: $!"; |
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my $job = new_sig File::Rdiff::Job 128; |
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my $buf = new File::Rdiff::Buffers 4096; |
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while ($job->iter($buf) == BLOCKED) { |
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# fetch more input data |
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$buf->avail_in or do { |
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my $in; |
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65536 == sysread $basis, $in, 65536 or $buf->eof; |
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$buf->in($in); |
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}; |
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print $sig $buf->out; |
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} |
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print $sig $buf->out; |
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} elsif ($ARGV[0] eq "delta") { |
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open $sig, "<$ARGV[1]" or die "$ARGV[1]: $!"; |
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open $new, "<$ARGV[2]" or die "$ARGV[2]: $!"; |
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open $delta, ">$ARGV[3]" or die "$ARGV[3]: $!"; |
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# first load the signature into memory |
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my $job = new_loadsig File::Rdiff::Job; |
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my $buf = new File::Rdiff::Buffers 0; |
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do { |
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$buf->avail_in or do { |
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my $in; |
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65536 == sysread $sig, $in, 65536 or $buf->eof; |
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$buf->in($in); |
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}; |
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} while $job->iter($buf) == BLOCKED; |
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$sig = $job->signature; |
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$sig->build_hash_table; |
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# now create the delta file |
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my $job = new_delta File::Rdiff::Job $sig; |
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my $buf = new File::Rdiff::Buffers 65536; |
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do { |
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$buf->avail_in or do { |
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my $in; |
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65536 == sysread $new, $in, 65536 or $buf->eof; |
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$buf->in($in); |
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}; |
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print $delta $buf->out; |
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} while $job->iter($buf) == BLOCKED; |
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print $delta $buf->out; |
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} elsif ($ARGV[0] eq "patch") { |
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open $base, "<$ARGV[1]" or die "$ARGV[1]: $!"; |
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open $delta, "<$ARGV[2]" or die "$ARGV[2]: $!"; |
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open $new, ">$ARGV[3]" or die "$ARGV[3]: $!"; |
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# NYI |
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File::Rdiff::patch_file $base, $delta, $new; |
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} else { |
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print <<EOF; |
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$0 signature BASIS SIGNATURE |
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$0 delta SIGNATURE NEW DELTA |
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$0 patch BASE DELTA NEW |
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EOF |
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exit (1); |
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} |
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