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Re: Problem with NSData to NSString to NSData
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Re: Problem with NSData to NSString to NSData


  • Subject: Re: Problem with NSData to NSString to NSData
  • From: Aki Inoue <email@hidden>
  • Date: Tue, 28 Oct 2008 21:56:30 -0700

Joel,

The PDF is a binary data format. So, trying to decode with an ASCII encoding vonverter would result in data loss.
I recommend processing it as mere bytes without mapping to a string.


Aki from iPhone


On 2008/10/28, at 21:43, Joel Norvell <email@hidden> wrote:

Dear Cocoa-dev People,

I have a file with some metadata prepended to a pdf.

I want to strip the metadata off and display the pdf.

I was trying to do this:

- (void) loadFromPath: (NSString *) path
{
 NSData *myData = [NSData dataWithContentsOfFile:path];

 NSString *myStr = [[NSString alloc] initWithData:pdfData
                                     encoding:NSASCIIStringEncoding];

 // I strip off the metadata here, leaving the pdfStr.

 // Nothing I've tried here has worked:
 NSData * myNewData = [pdfStr dataUsingEncoding: ???];

 // Display the pdf here...
}

How can I get this to work?

Sincerely,

Joel Norvell





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References: 
 >Problem with NSData to NSString to NSData (From: Joel Norvell <email@hidden>)

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