Currently command-line arguments to parrot programs come
in with a fixed_8 encoding. I'd like to have those arguments
converted to (or treated as) utf8, so they can be evaluated as
unicode. How do I do that?
Here's an example:
.sub 'main' :main
.param pmc args
.local string str
str = args[1]
## ...CONVERSION GOES HERE...
print "encoding = "
$I0 = encoding str
$S0 = encodingname $I0
say $S0
print "escape = "
$S0 = escape str
say $S0
.end
This program takes the first argument from the command line and
displays its encoding and PIR escape sequence. Here's a sample run:
$ ./parrot x.pir '«☺»'
encoding = fixed_8
escape = \x{c2}\x{ab}\x{e2}\x{98}\x{ba}\x{c2}\x{bb}
If it gets mangled in email, the command line argument is:
U+00AB LEFT-POINTING DOUBLE ANGLE QUOTATION
U+263A WHITE SMILEY FACE
U+00BB RIGHT-POINTING DOUBLE ANGLE QUOTATION
Here we can see that the command line argument has come in
as fixed_8 encoding. I'd like that string to be somehow
treated as or converted to utf8/unicode instead, such that
the output lines above would produce:
encoding = utf8
escape = \x{ab}\u263a\x{bb}
I've tried various combinations of trans_encoding and
trans_charset with little luck -- what magic am I missing?
Thanks!
Pm
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