In the end, I wrote this:
use Data::Structure::Util qw(get_refs utf8_on);
sub _perl_to_python_utf8_on {
# We need to convert the hash keys ourselves.
# 'get_refs' digs through the data structure
# and returns an array ref of every reference
# in the structure, at all levels.
# All Hail CPAN; so glad I didn't have to walk
# the data myself.
my $refs = get_refs( $_[0] );
# For each ref, process just the hashes.
for my $ref ( @{$refs} ) {
if ( ref($ref) eq 'HASH' ) {
for my $key ( keys %$ref ) {
# See text below.
$ref->{ utf8_on($key) } = $ref->{$key};
}
}
}
# Let the utility convert everything else.
return utf8_on( $_[0] );
}
You might think that the statement $ref->{ utf8_on($key) } = $ref->{$key}; would produce duplicate keys, but it does not; I went back and wrote key counting tests to prove it after reading other comments in this thread. The key (pun intended) to understanding what's going on here is that I believe utf8_on() only twiddles metadata; it does not change the actual value of the key. Hence we don't get duplicate entries and do not need to do
$ref->{ utf8_on($key) } = delete $ref->{$key}.
You'd also think that I've now mismatched the key string and its metadata, but Inline::Python seems to be Doing the Right Thing with it, so I am leaving well enough alone for now. Maybe the utf8 'value' of each char is the same as its ascii value when less than 128 or 255?
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|