On Jan 29, 2007, at 4:33 PM, karl arder wrote:
Thanks Charles,
Before I get down to business, thanks for the convert to B&W
formula you also posted. I have just been using BnW=(r+g+b)/3,
which is a bit dark and the contrast is off. Cool!
Now to iTunes...
I was wondering how Apple handled this problem. Seems they had to
figure out a way around this too.
So now I expose my ignorance... I'm not quite sure how to use the
declares you provided. I assume I use the raw URL path straight
from the iTunes list. I haven't a clue how to pass the two
parameters for <charactersToLeaveUnescaped> &
<legalURLCharactersToBeEscaped>. Do I have to further parse the
file name for specific characters?
No. Note that the parameters come with default values; just use
those (or pass "").
You need to replace the illegal characters with percent codes. For
MacOS, you can use the following function.
The raw path already has escaped characters - a space is %20 and I
again assume this is a 'legal' character. I have a tract by Bjork
(with an umlaut over the 'o') that causes an error. Unless I had
this tract I would never know this was an issue. How can I use
these declares for any/all possible characters in a valid song
name? Am I missing something simple???
Yes. Try the function in a test app and see what happens to Björk. --
dim escapedURL as String = Escape("file://www.björk.com").
Thanks again, you and others on this list have been most helpful to
a newcomer, it's nice to feel welcome here.
ka_
Message: 8
Subject: Re: Reading iTune XML Music List
From: Charles Yeomans <[EMAIL PROTECTED]>
Date: Mon, 29 Jan 2007 11:33:35 -0500
On Jan 28, 2007, at 7:39 PM, karl arder wrote:
Ok, I seem to be hitting my head against every low hanging object...
Song names/paths can have a broader scope of characters than
allowed in a URL. How do I now convert the paths correctly so I
don't get errors with these characters.
I guess I'm plowing over ground that is a well trodden path with
regards to this subject. Are there any other 'surprises' I can
look forward to?
You need to replace the illegal characters with percent codes. For
MacOS, you can use the following function.
Function Escape(theURL as String, charactersToLeaveUnescaped as
String = "", legalURLCharactersToBeEscaped as String = "") As String
if Encoding(theURL) is nil then
// parameter '" + theURL + "' does not have an encoding."
return theURL
end if
soft declare function CFURLCreateStringByAddingPercentEscapes lib
"Carbon.framework" (allocator as Integer, originalString as
CFStringRef, charactersToLeaveUnescaped as CFStringRef,
legalURLCharactersToBeEscaped as CFStringRef, encoding as UInt32) as
CFStringRef
const kCFAllocatorDefault = 0
return CFURLCreateStringByAddingPercentEscapes
(kCFAllocatorDefault, theURL, charactersToLeaveUnescaped,
legalURLCharactersToBeEscaped, Encoding(theURL).Code)
End Function
And here is its inverse.
Function Unescape(theURL as String, charactersToLeaveEscaped as
String = "") As String
if Encoding(theURL) is nil then
// parameter '" + theURL + "' does not have an encoding."
return theURL
end if
theURL = ConvertEncoding(theURL, Encodings.UTF8)
soft declare function CFURLCreateStringByReplacingPercentEscapes
lib "Carbon.framework" (allocator as Integer, originalString as
CFStringRef, charactersToLeaveEscaped as CFStringRef) as CFStringRef
const kCFAllocatorDefault = 0
return CFURLCreateStringByReplacingPercentEscapes
(kCFAllocatorDefault, theURL, charactersToLeaveEscaped)
End Function
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