use strict;
use warnings;
use Carp;
+use File::Spec;
our $VERSION = '1.02';
use bytes (); # for $bytes::hint_bits
-$charnames::hint_bits = 0x20000;
+$charnames::hint_bits = 0x20000; # HINT_LOCALIZE_HH
my %alias1 = (
# Icky 3.2 names with parentheses.
sub alias_file ($)
{
- my $arg = shift;
- my $file = -f $arg ? $arg : "unicore/${arg}_alias.pl";
+ my ($arg, $file) = @_;
+ if (-f $arg && File::Spec->file_name_is_absolute ($arg)) {
+ $file = $arg;
+ }
+ elsif ($arg =~ m/^\w+$/) {
+ $file = "unicore/${arg}_alias.pl";
+ }
+ else {
+ croak "Charnames alias files can only have identifier characters";
+ }
if (my @alias = do $file) {
+ @alias == 1 && !defined $alias[0] and
+ croak "$file cannot be used as alias file for charnames";
+ @alias % 2 and
+ croak "$file did not return a (valid) list of alias pairs";
alias (@alias);
return (1);
}
## @off will hold the index into the code/name string of the start and
## end of the name as we find it.
- ## If :full, look for the the name exactly
+ ## If :full, look for the name exactly
if ($^H{charnames_full} and $txt =~ /\t\t\Q$name\E$/m) {
@off = ($-[0], $+[0]);
}
##
my ($promote, %h, @args) = (0);
while (@_ and $_ = shift) {
- if ($_ eq ":alias" && @_) {
+ if ($_ eq ":alias") {
+ @_ or
+ croak ":alias needs an argument in charnames";
my $alias = shift;
if (ref $alias) {
ref $alias eq "HASH" or
- die "Only HASH reference supported as argument to :alias";
+ croak "Only HASH reference supported as argument to :alias";
alias ($alias);
next;
}
- if ($alias =~ m{:(\w+)$} and $1 ne "full" && $1 ne "short") {
- alias_file ($1) and $promote = 1, next;
+ if ($alias =~ m{:(\w+)$}) {
+ $1 eq "full" || $1 eq "short" and
+ croak ":alias cannot use existing pragma :$1 (reversed order?)";
+ alias_file ($1) and $promote = 1;
+ next;
}
- alias_file ($alias) and next;
+ alias_file ($alias);
+ next;
+ }
+ if (m/^:/ and ! ($_ eq ":full" || $_ eq ":short")) {
+ warn "unsupported special '$_' in charnames";
+ next;
}
push @args, $_;
}