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grep: add -I flag #815

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Nov 17, 2024
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grep: add -I flag #815

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22 changes: 14 additions & 8 deletions bin/grep
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Original file line number Diff line number Diff line change
Expand Up @@ -54,7 +54,7 @@ use File::Spec;
use File::Temp qw();
use Getopt::Std;

our $VERSION = '1.013';
our $VERSION = '1.014';

$| = 1; # autoflush output

Expand Down Expand Up @@ -88,7 +88,7 @@ sub VERSION_MESSAGE {

sub usage {
die <<EOF;
usage: $Me [-incwsxvHhLlFgurpaqT] [-e pattern] [-A NUM] [-B NUM] [-C NUM]
usage: $Me [-IincwsxvHhLlFgurpaqT] [-e pattern] [-A NUM] [-B NUM] [-C NUM]
[-m NUM] [-f pattern-file] [-P sep] [pattern] [file...]

Options:
Expand Down Expand Up @@ -116,6 +116,7 @@ Options:
-B show lines before each matching line
-A show lines after each matching line
-a treat binary files as plain text files
-I ignore binary files
-s suppress errors for failed file and dir opens
-T trace files as opened
-Z force grep to behave as zgrep
Expand Down Expand Up @@ -245,7 +246,7 @@ sub parse_args {
@ARGV = @tmparg;

$opt{'p'} = $opt{'P'} = ''; # argument to print()
getopts('inC:cwsxvHhe:f:LlgurpP:aqTFZm:A:B:', \%opt) or usage();
getopts('IinC:cwsxvHhe:f:LlgurpP:aqTFZm:A:B:', \%opt) or usage();

if (defined $opt{'m'} && $opt{'m'} !~ m/\A[0-9]+\z/) {
die "$Me: invalid max count\n";
Expand Down Expand Up @@ -429,9 +430,7 @@ FILE: while ( defined( $file = shift(@_) ) ) {
$file = "$Compress{$ext} $file |";
$compressed = 1;
}
elsif (-B $file) {
$is_binary = 1;
}
$is_binary = 1 if -B $file;
}

warn "$Me: checking $name\n" if $opt->{'T'};
Expand All @@ -453,7 +452,10 @@ FILE: while ( defined( $file = shift(@_) ) ) {
$Errors++;
next FILE;
}
binmode($fh) if $is_binary;
if ($is_binary) {
next FILE if $opt->{'I'};
binmode $fh;
}
}

$total = $Matches = 0;
Expand Down Expand Up @@ -558,7 +560,7 @@ grep - search for regular expressions and print

=head1 SYNOPSIS

grep [-incwsxvhHlLFigurpaqT] [-e pattern] [-A NUM] [-B NUM] [-C NUM]
grep [-IincwsxvhHlLFigurpaqT] [-e pattern] [-A NUM] [-B NUM] [-C NUM]
[-m NUM] [-f pattern-file] [-P sep] [pattern] [file ...]

=head1 DESCRIPTION
Expand Down Expand Up @@ -642,6 +644,10 @@ Always include filename headers for matching lines or paragraphs.

Hide filenames. Only print matching lines or paragraphs.

=item B<-I>

Ignore binary files.

=item B<-i>

Ignore case while matching. This means, for example, that the pattern
Expand Down
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