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 $f;
+}
+
while (<>) {
chomp;
+ # stitch together incomplete lines (those ending with "\")
+ while (s/\\$//) {
+ $_ .= readline;
+ chomp;
+ }
+
/\bsed\s+-i/ and err 'sed -i is not portable';
- /\becho\s+-[neE]/ and err 'echo with option is not portable (please use printf)';
+ /\becho\s+-[neE]/ and err 'echo with option is not portable (use printf)';
/^\s*declare\s+/ and err 'arrays/declare not portable';
- /^\s*[^#]\s*which\s/ and err 'which is not portable (please use type)';
- /\btest\s+[^=]*==/ and err '"test a == b" is not portable (please use =)';
- /\bexport\s+[A-Za-z0-9_]*=/ and err '"export FOO=bar" is not portable (please use FOO=bar && export FOO)';
+ /^\s*[^#]\s*which\s/ and err 'which is not portable (use type)';
+ /\btest\s+[^=]*==/ and err '"test a == b" is not portable (use =)';
+ /\bwc -l.*"\s*=/ and err '`"$(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;
}