Werner's Miscellanea
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| Source at commit dd900189032ece666c1f102ae995e16267bf74a9 created 4 years 8 months ago. By Werner Almesberger, bin/hi8: highlight 8-bit chars; -g for "grep" mode: show only lines with 8-bit | |
|---|---|
| 1 | #!/usr/bin/perl |
| 2 | sub usage |
| 3 | { |
| 4 | print STDERR "usage: $0 [-g] [file ...]\n"; |
| 5 | exit(1); |
| 6 | } |
| 7 | |
| 8 | if ($ARGV[0] eq "-g") { |
| 9 | $grep = 1; |
| 10 | shift @ARGV; |
| 11 | } |
| 12 | &usage if $ARGV[0] =~ /^-/; |
| 13 | |
| 14 | while (<>) { |
| 15 | @c = unpack "C*"; |
| 16 | for (@c) { |
| 17 | if ($_ == 10) { |
| 18 | print "$s\n" if $found || !$grep; |
| 19 | $found = 0; |
| 20 | undef $s; |
| 21 | } elsif ($_ < 0x80) { |
| 22 | $s .= pack("c", $_); |
| 23 | } else { |
| 24 | $s .= sprintf("\e[7m%02x\e[0m", $_); |
| 25 | $found = 1; |
| 26 | } |
| 27 | } |
| 28 | } |
| 29 | |
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