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Re: [Q] What encoding method can be automatically detected?
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Re: [Q] What encoding method can be automatically detected?


  • Subject: Re: [Q] What encoding method can be automatically detected?
  • From: JongAm Park <email@hidden>
  • Date: Thu, 01 Feb 2007 08:56:12 -0800


Ricky Sharp wrote:
The docs on that API mention that encodings are only returned when the file contains BOMs. Now, then UTF-8 BOMS are optional, so that older method would probably not be able to detect UTF-8 files lacking BOMs.
Is it documented? I read http://developer.apple.com/documentation/Cocoa/Conceptual/Strings/Articles/readingFiles.html#//apple_ref/doc/uid/TP40003459, and http://developer.apple.com/documentation/Cocoa/Reference/Foundation/Classes/NSString_Class/Reference/NSString.html#//apple_ref/occ/clm/NSString/stringWithContentsOfFile:usedEncoding:error:, but I don't see it....

Anyway...

Definitely try to migrate your users to using UTF-8 for their documents; makes life so much easier.
Yes.. but my app is for using the encoding method other than Unicode.

However, thank you for your explanation. It was very helpful.

At home, I made my iMac compile the Firefox. Within the firefox source code, there is a chardet library which detects character encoding used for a given string. Because it depends on statistics, it would give back more accurate result if the string is long enough.
Because I work with some text files, it should be OK.


Also, I found IBM's ICS library. It contains a character encoding detection library, but it is implemented in Java.
It seems to be easier to use.


So, I guess it would be better to use one of those libraries, instead of the NSString's method....

Thank you.

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  • Follow-Ups:
    • Re: [Q] What encoding method can be automatically detected?
      • From: Sherm Pendley <email@hidden>
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      • From: Ricky Sharp <email@hidden>
References: 
 >[Q] What encoding method can be automatically detected? (From: JongAm Park <email@hidden>)
 >Re: [Q] What encoding method can be automatically detected? (From: Ricky Sharp <email@hidden>)

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