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CFSTringRef 的 + [NSString string string string string string string string 字符串的等值与 CFSTringRef 的 ContentsofURL: 已使用的编码: 已使用的编码: error:]
原标题:equivalent of +[NSString stringWithContentsOfURL:usedEncoding:error:] for CFStringRef

I wonder what would be an equivalent of +[NSString stringWithContentsOfURL:usedEncoding:error:] in CoreFoundation?

我知道我可以使用 (__Bridge NSString *) 的东西,这次我宁可把我的生活搞复杂一点,

在我的品味上,我很难品味有几条线 在目标C做东西

...
CFErrorRef error = NULL;
CFURLRef fileURL = CFBundleCopyResourceURL(bundle,
                                           CFSTR("file"),
                                           CFSTR("txt"),
                                           NULL);

// Ugly piece of objc code in my whole C source file :(
NSError *nsError = (__bridge NSError *)(error);
NSString *nsString = [NSString stringWithContentsOfURL:(__bridge NSURL *)fileURL
                                          usedEncoding:NULL
                                                 error:&nsError];

CFStringRef fileContents = (__brigde CFStringRef)nsString; 
...
问题回答

您可以尝试使用

CFStringCreateFromExternalRepresentation

我会想象代码是这样的,

NSData *data = [NSData dataWithContentsOfFile:<path to your file>]
CFStringRef string = CFStringCreateFromExternalRepresentation(NULL, (CFDataRef)data, kCFStringEncodingUTF8);

最理想的情况是访问错误,您也可以使用 NSData s 数据与 ContentsOfFile:options:error:





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