Mercurial > octave
view build-aux/inplace_edit.pl @ 30927:b78e2d064eff
maint: Merge stable to default.
author | Markus Mützel <markus.muetzel@gmx.de> |
---|---|
date | Mon, 11 Apr 2022 16:40:52 +0200 |
parents | 8b548f2f8086 |
children |
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#!/usr/bin/perl -w ################################################################################ ## File: inplace_edit.pl ## Usage: perl inplace_edit.pl 'PERL_CODE' file1 [file2] [...] ## Purpose: Run snippet of PERL_CODE on each line in a file and replace ## existing line with the results of running the code. ## This replaces perl -i -pe 'PERL_CODE' file1 [file2] ... ## due to a problem in Perl 5.28 which restricts the number of files ################################################################################ ## Create Perl code from first argument (-e CODE) eval "sub per_line_code { $ARGV[0]; }"; shift @ARGV; ## Loop over each file foreach $fname (@ARGV) { rename ($fname, "$fname.$$") or die "Rename failed:$fname:$!"; open (my $FHI, "<", "$fname.$$") or die "Open failed:$fname.$$:$!"; open (my $FHO, ">", "$fname") or die "Open failed:$fname:$!"; ## Loop over each line while (<$FHI>) { per_line_code (); print $FHO $_; } close ($FHI); close ($FHO); unlink "$fname.$$" or die "Delete failed:$fname.$$:$!"; }