#!/usr/bin/perl # Test t0000..t9999.sh for non portable shell scripts # This script can be called with one or more filenames as parameters use strict; use warnings; my $exit_code=0; my %func; sub err { my $msg = shift; s/^\s+//; s/\s+$//; s/\s+/ /g; print "$ARGV:$.: error: $msg: $_\n"; $exit_code = 1; } # glean names of shell functions for my $i (@ARGV) { open(my $f, '<', $i) or die "$0: $i: $!\n"; while (<$f>) { $func{$1} = 1 if /^\s*(\w+)\s*\(\)\s*{\s*$/; } close $f; } while (<>) { chomp; # stitch together incomplete lines (those ending with "\") while (s/\\$//) { $_ .= readline; chomp; } /\bsed\s+-i/ and err 'sed -i is not portable'; /\becho\s+-[neE]/ and err 'echo with option is not portable (use printf)'; /^\s*declare\s+/ and err 'arrays/declare not portable'; /^\s*[^#]\s*which\s/ and err 'which is not portable (use type)'; /\btest\s+[^=]*==/ and err '"test a == b" is not portable (use =)'; /\bwc -l.*"\s*=/ and err '`"$(wc -l)"` is not portable (use test_line_count)'; /\bhead\s+-c\b/ and err 'head -c is not portable (use test_copy_bytes BYTES <file >out)'; /(?:\$\(seq|^\s*seq\b)/ and err 'seq is not portable (use test_seq)'; /\bgrep\b.*--file\b/ and err 'grep --file FILE is not portable (use grep -f FILE)'; /\bexport\s+[A-Za-z0-9_]*=/ and err '"export FOO=bar" is not portable (use FOO=bar && export FOO)'; /^\s*([A-Z0-9_]+=(\w+|(["']).*?\3)\s+)+(\w+)/ and exists($func{$4}) and err '"FOO=bar shell_func" assignment extends beyond "shell_func"'; # this resets our $. for each file close ARGV if eof; } exit $exit_code;