At 12:31 am +0800 3/12/04, He Zhiqiang wrote:
Now i encountered another problem, there are a few files contains
not only one charset but also two or more, for example, file1
contains japanese and chinese, if i use open() to load the data
into memory, ord and length etc.. can't correctly work! Perhasp i
miss something to encode or decode the data ?
code:
#!/usr/bin/perl -w
use utf8;
open(FD, "< file1");
while(<FD>) {
chomp;
print "length = ".length($_);
}
close FD;
----------
length() can not count the correct non-ASCII characters. :(
If the file is in UTF-8, then it may be in any number of _languages_
but it uses only one character set -- Unicode. So far as I know "use
utf8" is now redundant and ineffectual in Perl. You will get the
correct character count (6 characters rather than 18 bytes) by
opening the file handle as utf-8 as below.
no warnings;
my $f = "/tmp/cjk.txt";
my $text = "\x{56d8}\x{56d9}\x{56da}\x{56db}\x{56dc}\x{56dd}\n";
open F, ">$f";
print F $text; # writes $text to $f as UTF-8
close F;
open F, "<:utf8", $f;
for (<F>) {
chomp;
print "$_ - Length = " . length() . $/;
}
JD
