在为this question执行调试时,我问自己:如何找到\N{}
中给定Unicode代码点可以使用的所有值?
例如,我想知道U + 03B1(GREEK SMALL LETTER ALPHA)的所有别名。我怎么知道\N{greek:alpha}
可以用于此?
答案 0 :(得分:3)
没有一个列表可以用来检查这些列表。
根据\N{}
的{{3}},以下内容可以解决问题:
use List::Util qw( max );
use Unicode::UCD qw( charscripts charinfo charprop );
my $re_scripts = join '|', map { quotemeta uc s/_/ /gr } keys %{ charscripts() };
my $re_letter = qr/^($re_scripts) (?:(CAPITAL|SMALL) )?LETTER (\S.*)/;
{
@ARGV == 1
or die("usage\n");
my $ucp = hex( $ARGV[0] =~ s/^(?:U\+|0x)//r );
my @names;
push @names, [ "", sprintf('U+%X', $ucp) ];
if ( my $charinfo = charinfo($ucp) ) {
my $name = $charinfo->{name};
push @names, [ ":full", $name ] if length($name) && $name ne '<control>';
for my $alias (map s/:.*//sr, split /,/, charprop($ucp, 'Name_Alias')) {
push @names, [ ":full", $alias ];
}
if ( my ($script_name, $type, $short_char_name) = $name =~ $re_letter ) {
my $uc = ( $type // 'CAPITAL' ) eq 'CAPITAL';
my $lc = ( $type // 'SMALL' ) eq 'SMALL';
push @names, [ ":short", join(":", $script_name, uc($short_char_name)) ] if $uc;
push @names, [ ":short", join(":", $script_name, lc($short_char_name)) ] if $lc;
push @names, [ $script_name, uc($short_char_name) ] if $uc;
push @names, [ $script_name, lc($short_char_name) ] if $lc;
}
}
my $longuest = max map length($_->[0]), @names;
say sprintf("use charnames qw( %-*s ); \"\\N{%s}\"", $longuest, @$_) for @names;
}
例如,
$ ./script.pl U+03B1
use charnames qw( ); "\N{U+3B1}"
use charnames qw( :full ); "\N{GREEK SMALL LETTER ALPHA}"
use charnames qw( :short ); "\N{GREEK:alpha}"
use charnames qw( GREEK ); "\N{alpha}"
$ ./script.pl U+0391
use charnames qw( ); "\N{U+391}"
use charnames qw( :full ); "\N{GREEK CAPITAL LETTER ALPHA}"
use charnames qw( :short ); "\N{GREEK:ALPHA}"
use charnames qw( GREEK ); "\N{ALPHA}"
$ perl a.pl 1C00
use charnames qw( ); "\N{U+1C00}"
use charnames qw( :full ); "\N{LEPCHA LETTER KA}"
use charnames qw( :short ); "\N{LEPCHA:KA}"
use charnames qw( :short ); "\N{LEPCHA:ka}"
use charnames qw( LEPCHA ); "\N{KA}"
use charnames qw( LEPCHA ); "\N{ka}"
$ ./script.pl 20
use charnames qw( ); "\N{U+20}"
use charnames qw( :full ); "\N{SPACE}"
use charnames qw( :full ); "\N{SP}"
注意:
use charnames qw( );
的实例(即没有参数的指令加载charnames.pm)实际上是不必要的。use charnames qw( :full :short );
之前加载了\N{}
,则使用U+
隐式加载charnames.pm。U+
后面的数字不区分大小写。:short
后面的数字可能有前导零。:short
名称中的脚本名称不区分大小写。use charnames qw( :loose );
和脚本字符名称中的大写字符名称不区分大小写,但必须至少包含一个大写字符。 DataContext db = new DataContext();
public SupliersForm()
{
InitializeComponent();
supliersDG.DataSource = db.Supliers.Local.ToBindingList();
db.Supliers.Load();
}
private void SaveBtn_Click(object sender, EventArgs e)
{
supliersDG.EndEdit();
db.SaveChanges();
}
可以进一步更改显示的字符串。