diff options
Diffstat (limited to 'Master/tlpkg/tlperl/lib/utf8.pm')
-rw-r--r-- | Master/tlpkg/tlperl/lib/utf8.pm | 61 |
1 files changed, 31 insertions, 30 deletions
diff --git a/Master/tlpkg/tlperl/lib/utf8.pm b/Master/tlpkg/tlperl/lib/utf8.pm index 1d6992ccf03..6a979f147b3 100644 --- a/Master/tlpkg/tlperl/lib/utf8.pm +++ b/Master/tlpkg/tlperl/lib/utf8.pm @@ -2,11 +2,10 @@ package utf8; $utf8::hint_bits = 0x00800000; -our $VERSION = '1.10'; +our $VERSION = '1.13_01'; sub import { $^H |= $utf8::hint_bits; - $enc{caller()} = $_[1] if $_[1]; } sub unimport { @@ -29,22 +28,22 @@ utf8 - Perl pragma to enable/disable UTF-8 (or UTF-EBCDIC) in source code =head1 SYNOPSIS - use utf8; - no utf8; + use utf8; + no utf8; - # Convert the internal representation of a Perl scalar to/from UTF-8. + # Convert the internal representation of a Perl scalar to/from UTF-8. - $num_octets = utf8::upgrade($string); - $success = utf8::downgrade($string[, FAIL_OK]); + $num_octets = utf8::upgrade($string); + $success = utf8::downgrade($string[, $fail_ok]); - # Change each character of a Perl scalar to/from a series of - # characters that represent the UTF-8 bytes of each original character. + # Change each character of a Perl scalar to/from a series of + # characters that represent the UTF-8 bytes of each original character. - utf8::encode($string); # "\x{100}" becomes "\xc4\x80" - utf8::decode($string); # "\xc4\x80" becomes "\x{100}" + utf8::encode($string); # "\x{100}" becomes "\xc4\x80" + utf8::decode($string); # "\xc4\x80" becomes "\x{100}" - $flag = utf8::is_utf8(STRING); # since Perl 5.8.1 - $flag = utf8::valid(STRING); + $flag = utf8::is_utf8($string); # since Perl 5.8.1 + $flag = utf8::valid($string); =head1 DESCRIPTION @@ -96,11 +95,11 @@ C<no utf8;>. The following functions are defined in the C<utf8::> package by the Perl core. You do not need to say C<use utf8> to use these and in fact -you should not say that unless you really want to have UTF-8 source code. +you should not say that unless you really want to have UTF-8 source code. =over 4 -=item * $num_octets = utf8::upgrade($string) +=item * C<$num_octets = utf8::upgrade($string)> Converts in-place the internal representation of the string from an octet sequence in the native encoding (Latin-1 or EBCDIC) to I<UTF-X>. The @@ -115,7 +114,7 @@ B<Note that this function does not handle arbitrary encodings.> Therefore Encode is recommended for the general purposes; see also L<Encode>. -=item * $success = utf8::downgrade($string[, FAIL_OK]) +=item * C<$success = utf8::downgrade($string[, $fail_ok])> Converts in-place the internal representation of the string from I<UTF-X> to the equivalent octet sequence in the native encoding (Latin-1 @@ -127,7 +126,7 @@ that the substr() or length() function works with the usually faster byte algorithm. Fails if the original I<UTF-X> sequence cannot be represented in the -native 8 bit encoding. On failure dies or, if the value of C<FAIL_OK> is +native 8 bit encoding. On failure dies or, if the value of I<$fail_ok> is true, returns false. Returns true on success. @@ -136,7 +135,7 @@ B<Note that this function does not handle arbitrary encodings.> Therefore Encode is recommended for the general purposes; see also L<Encode>. -=item * utf8::encode($string) +=item * C<utf8::encode($string)> Converts in-place the character sequence to the corresponding octet sequence in I<UTF-X>. That is, every (possibly wide) character gets @@ -144,16 +143,17 @@ replaced with a sequence of one or more characters that represent the individual I<UTF-X> bytes of the character. The UTF8 flag is turned off. Returns nothing. - my $a = "\x{100}"; # $a contains one character, with ord 0x100 - utf8::encode($a); # $a contains two characters, with ords 0xc4 and 0x80 + my $a = "\x{100}"; # $a contains one character, with ord 0x100 + utf8::encode($a); # $a contains two characters, with ords 0xc4 and + # 0x80 B<Note that this function does not handle arbitrary encodings.> Therefore Encode is recommended for the general purposes; see also L<Encode>. -=item * $success = utf8::decode($string) +=item * C<$success = utf8::decode($string)> -Attempts to convert in-place the octet sequence in I<UTF-X> to the +Attempts to convert in-place the octet sequence encoded as I<UTF-X> to the corresponding character sequence. That is, it replaces each sequence of characters in the string whose ords represent a valid UTF-X byte sequence, with the corresponding single character. The UTF-8 flag is @@ -161,24 +161,25 @@ turned on only if the source string contains multiple-byte I<UTF-X> characters. If I<$string> is invalid as I<UTF-X>, returns false; otherwise returns true. - my $a = "\xc4\x80"; # $a contains two characters, with ords 0xc4 and 0x80 + my $a = "\xc4\x80"; # $a contains two characters, with ords + # 0xc4 and 0x80 utf8::decode($a); # $a contains one character, with ord 0x100 B<Note that this function does not handle arbitrary encodings.> Therefore Encode is recommended for the general purposes; see also L<Encode>. -=item * $flag = utf8::is_utf8(STRING) +=item * C<$flag = utf8::is_utf8($string)> -(Since Perl 5.8.1) Test whether STRING is encoded internally in UTF-8. -Functionally the same as Encode::is_utf8(). +(Since Perl 5.8.1) Test whether I<$string> is marked internally as encoded in +UTF-8. Functionally the same as Encode::is_utf8(). -=item * $flag = utf8::valid(STRING) +=item * C<$flag = utf8::valid($string)> -[INTERNAL] Test whether STRING is in a consistent state regarding +[INTERNAL] Test whether I<$string> is in a consistent state regarding UTF-8. Will return true if it is well-formed UTF-8 and has the UTF-8 flag -on B<or> if STRING is held as bytes (both these states are 'consistent'). -Main reason for this routine is to allow Perl's testsuite to check +on B<or> if I<$string> is held as bytes (both these states are 'consistent'). +Main reason for this routine is to allow Perl's test suite to check that operations have left strings in a consistent state. You most probably want to use utf8::is_utf8() instead. |