Change 21016 by [EMAIL PROTECTED] on 2003/09/03 08:22:48
Add, document, and test bytes::substr, index, rindex, chr,
document bytes::ord.
Affected files ...
... //depot/perl/lib/bytes.pm#8 edit
... //depot/perl/lib/bytes.t#4 edit
... //depot/perl/lib/bytes_heavy.pl#3 edit
Differences ...
==== //depot/perl/lib/bytes.pm#8 (text) ====
Index: perl/lib/bytes.pm
--- perl/lib/bytes.pm#7~12928~ Fri Nov 9 22:10:39 2001
+++ perl/lib/bytes.pm Wed Sep 3 01:22:48 2003
@@ -18,6 +18,11 @@
}
sub length ($);
+sub chr ($);
+sub ord ($);
+sub substr ($$;$$);
+sub index ($$;$);
+sub rindex ($$;$);
1;
__END__
@@ -29,8 +34,15 @@
=head1 SYNOPSIS
use bytes;
+ ... chr(...); # or bytes::chr
+ ... index(...); # or bytes::index
+ ... length(...); # or bytes::length
+ ... ord(...); # or bytes::ord
+ ... rindex(...); # or bytes::rindex
+ ... substr(...); # or bytes::substr
no bytes;
+
=head1 DESCRIPTION
The C<use bytes> pragma disables character semantics for the rest of the
@@ -53,16 +65,22 @@
print "Length is ", length $x, "\n"; # "Length is 1"
printf "Contents are %vd\n", $x; # "Contents are 400"
{
- use bytes;
+ use bytes; # or "require bytes; bytes::length()"
print "Length is ", length $x, "\n"; # "Length is 2"
printf "Contents are %vd\n", $x; # "Contents are 198.144"
}
+chr(), ord(), substr(), index() and rindex() behave similarly.
+
For more on the implications and differences between character
-semantics and byte semantics, see L<perlunicode>.
+semantics and byte semantics, see L<perluniintro> and L<perlunicode>.
+
+=head1 LIMITATIONS
+
+bytes::substr() does not work as an lvalue().
=head1 SEE ALSO
-L<perlunicode>, L<utf8>
+L<perluniintro>, L<perlunicode>, L<utf8>
=cut
==== //depot/perl/lib/bytes.t#4 (text) ====
Index: perl/lib/bytes.t
--- perl/lib/bytes.t#3~19775~ Sat Jun 14 01:50:16 2003
+++ perl/lib/bytes.t Wed Sep 3 01:22:48 2003
@@ -4,20 +4,26 @@
require './test.pl';
}
-plan tests => 9;
+plan tests => 19;
my $a = chr(0x100);
is(ord($a), 0x100, "ord sanity check");
is(length($a), 1, "length sanity check");
+is(substr($a, 0, 1), "\x{100}", "substr sanity check");
+is(index($a, "\x{100}"), 0, "index sanity check");
+is(rindex($a, "\x{100}"), 0, "rindex sanity check");
is(bytes::length($a), 2, "bytes::length sanity check");
+is(bytes::chr(0x100), chr(0), "bytes::chr sanity check");
{
use bytes;
my $b = chr(0x100); # affected by 'use bytes'
is(ord($b), 0, "chr truncates under use bytes");
is(length($b), 1, "length truncated under use bytes");
+ is(bytes::ord($b), 0, "bytes::ord truncated under use bytes");
is(bytes::length($b), 1, "bytes::length truncated under use bytes");
+ is(bytes::substr($b, 0, 1), "\0", "bytes::substr truncated under use bytes");
}
my $c = chr(0x100);
@@ -31,4 +37,12 @@
}
is(length($c), 2, "length under use bytes looks at bytes");
is(bytes::length($c), 2, "bytes::length under use bytes looks at bytes");
+ if (ord('A') == 193) { # EBCDIC?
+ is(bytes::ord($c), 0x8c, "bytes::ord under use bytes looks at the 1st byte");
+ } else {
+ is(bytes::ord($c), 0xc4, "bytes::ord under use bytes looks at the 1st byte");
+ }
+ is(bytes::substr($c, 0, 1), "\xc4", "bytes::substr under use bytes looks at
bytes");
+ is(bytes::index($c, "\x80"), 1, "bytes::index under use bytes looks at bytes");
+ is(bytes::rindex($c, "\xc4"), 0, "bytes::rindex under use bytes looks at bytes");
}
==== //depot/perl/lib/bytes_heavy.pl#3 (text) ====
Index: perl/lib/bytes_heavy.pl
--- perl/lib/bytes_heavy.pl#2~5134~ Fri Feb 18 22:36:46 2000
+++ perl/lib/bytes_heavy.pl Wed Sep 3 01:22:48 2003
@@ -5,4 +5,36 @@
return CORE::length($_[0]);
}
+sub substr ($$;$$) {
+ BEGIN { bytes::import() }
+ return
+ @_ == 2 ? CORE::substr($_[0], $_[1]) :
+ @_ == 3 ? CORE::substr($_[0], $_[1], $_[2]) :
+ CORE::substr($_[0], $_[1], $_[2], $_[3]) ;
+}
+
+sub ord ($) {
+ BEGIN { bytes::import() }
+ return CORE::ord($_[0]);
+}
+
+sub chr ($) {
+ BEGIN { bytes::import() }
+ return CORE::chr($_[0]);
+}
+
+sub index ($$;$) {
+ BEGIN { bytes::import() }
+ return
+ @_ == 2 ? CORE::index($_[0], $_[1]) :
+ CORE::index($_[0], $_[1], $_[2]) ;
+}
+
+sub rindex ($$;$) {
+ BEGIN { bytes::import() }
+ return
+ @_ == 2 ? CORE::rindex($_[0], $_[1]) :
+ CORE::rindex($_[0], $_[1], $_[2]) ;
+}
+
1;
End of Patch.
