% chars in file names in Mac when creating files using C++

Question

I'm getting some problems in creating files with file names of special characters in Mac OS X using C++.

This is is my App Print :
File Name is received from another executable thru sockets. (Most annoying thing is i have not been able to print the file name at all in terminal. It just shows question marks only.But when i write the file name to another file's content, it shows the exact characters.)

My App Print :

######
File Name before decoding : /Users/zeus/workspace/Unicodes/files/%D4%D3%C2%F3_1.txt
File Name after decoding :  /Users/zeus/workspace/Unicodes/files/????_1.txt
File Opened and Written #####

After the app is done, when i check for the file it shows % chars in file name. How is that possible ..?

What is the filename supposed to be ? `‘”σΟ`? `‘”¬Û` ? — Esailija, Jan 07 '13 at 17:37
@Esailija: [It seems to be ISO 8859-1 (Latin-1) encoding](http://en.wikipedia.org/wiki/ISO/IEC_8859-1). — Cornstalks, Jan 07 '13 at 19:03
@Cornstalks well yeah but it can just as well be Windows-1252. The point is that it's not any Mac Os code page or unicode encoding. — Esailija, Jan 07 '13 at 19:06

score 2 · Answer 1 · edited May 23 '17 at 12:04

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My guess is that you need to encode your string as valid UTF-8. 0xD4 is not a valid UTF-8 character. Rather, the correct UTF-8 encoding for Ô is 0xC3 0x94 (it takes two bytes). It's impossible to say for sure because without seeing actual code, but this is my hunch. A more solid answer will need actual code.

It looks like your URL is encoding escape characters using the Latin-1 (ISO/IEC 8859-1) character set. This question talks about how to convert from ISO 8859-1 to UTF-8. Wikipedia has a good article on how UTF-8 is encoded.

edited May 23 '17 at 12:04

Community

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answered Jan 07 '13 at 17:32

Cornstalks

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Yes, on Mac OS X ["All BSD system functions expect their string parameters to be in UTF-8 encoding and nothing else."](https://developer.apple.com/library/mac/#documentation/MacOSX/Conceptual/BPInternational/Articles/FileEncodings.html) – bames53 Jan 07 '13 at 17:42
How to encode file name as valid UTF-8 in C++ ..? Sorry, i know it's a silly question. But all day i have been tired of this issue, i can't think straight. Can you please point me in the right direction. – Zeus Jan 07 '13 at 18:08
@Zeus: I added some links for how to convert to UTF-8 from ISO 8859-1. If you're still lost, leave a comment and I'll add more. – Cornstalks Jan 07 '13 at 18:59

% chars in file names in Mac when creating files using C++

1 Answers1