<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On May 10, 2017, at 4:19 AM, Andrey Fidrya via swift-corelibs-dev <<a href="mailto:swift-corelibs-dev@swift.org" class="">swift-corelibs-dev@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Hi All,</div><div class=""><br class=""></div><div class="">Btw, when migrating from NSString's methods to URL I've noticed</div><div class="">that they work a bit differently: URL's methods convert strings</div><div class="">from NFC to NFD (decomposed) unicode form which is demonstrated</div><div class="">by the example below.</div><div class=""><br class=""></div><div class="">I had to additionally call .<span style="color: rgb(112, 61, 170); font-family: Menlo; font-size: 11px;" class="">precomposedStringWithCanonicalMapping</span></div><div class="">on resulting string to convert it back to NFC form.</div><div class=""><br class=""></div><div class="">This was very surprising as it wasn't mentioned anywhere in docs</div><div class="">and has broken non-english filename support in app.</div></div></div></blockquote><div><br class=""></div>Out of curiosity, can you explain how this breaks your non-english filename support? What OS and filesystem are you using?</div><div><br class=""></div><div>- Tony</div><div><br class=""><blockquote type="cite" class=""><div class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Is this expected behavior or a bug?</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><div style="margin: 0px; line-height: normal;" class=""><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">//let source = "/my_file.txt"</span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures;" class=""> source = </span><span style="font-variant-ligatures: no-common-ligatures; color: #d12f1b" class="">"/мой_файл.txt"</span><span style="font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-variant-ligatures: no-common-ligatures" class="">// problematic is letter 'й'</span></div><div style="margin: 0px; line-height: normal; min-height: 13px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""></span><br class=""></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures" class=""> disallowedCharacters = </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">CharacterSet</span><span style="font-variant-ligatures: no-common-ligatures" class="">(charactersIn: </span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">source</span><span style="font-variant-ligatures: no-common-ligatures" class="">).</span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">inverted</span></div><div style="margin: 0px; line-height: normal; min-height: 13px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""></span><br class=""></div><div style="margin: 0px; line-height: normal; min-height: 13px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""></span><br class=""></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">do</span><span style="font-variant-ligatures: no-common-ligatures" class=""> {</span></div><div style="margin: 0px; line-height: normal; color: rgb(209, 47, 27);" class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">print</span><span style="font-variant-ligatures: no-common-ligatures;" class="">(</span><span style="font-variant-ligatures: no-common-ligatures" class="">"--- NSString:"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">)</span></div><div style="margin: 0px; line-height: normal; color: rgb(112, 61, 170);" class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures;" class=""> result = (</span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">source</span><span style="font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">as</span><span style="font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-variant-ligatures: no-common-ligatures" class="">NSString</span><span style="font-variant-ligatures: no-common-ligatures;" class="">).</span><span style="font-variant-ligatures: no-common-ligatures" class="">deletingPathExtension</span><span style="font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">as</span><span style="font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-variant-ligatures: no-common-ligatures" class="">String</span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">print</span><span style="font-variant-ligatures: no-common-ligatures" class="">(result)</span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">print</span><span style="font-variant-ligatures: no-common-ligatures" class="">(result.</span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">rangeOfCharacter</span><span style="font-variant-ligatures: no-common-ligatures" class="">(from: </span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">disallowedCharacters</span><span style="font-variant-ligatures: no-common-ligatures" class="">))</span></div><div style="margin: 0px; line-height: normal; min-height: 13px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""></span><br class=""></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">}</span></div><div style="margin: 0px; line-height: normal; min-height: 13px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""></span><br class=""></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">do</span><span style="font-variant-ligatures: no-common-ligatures" class=""> {</span></div><div style="margin: 0px; line-height: normal; color: rgb(209, 47, 27);" class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">print</span><span style="font-variant-ligatures: no-common-ligatures;" class="">(</span><span style="font-variant-ligatures: no-common-ligatures" class="">"--- String + URL:"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">)</span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures" class=""> result = </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">URL</span><span style="font-variant-ligatures: no-common-ligatures" class="">(fileURLWithPath: </span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">source</span><span style="font-variant-ligatures: no-common-ligatures" class="">).</span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">deletingPathExtension</span><span style="font-variant-ligatures: no-common-ligatures" class="">().</span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">path</span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">print</span><span style="font-variant-ligatures: no-common-ligatures" class="">(result)</span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">print</span><span style="font-variant-ligatures: no-common-ligatures" class="">(result.</span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">rangeOfCharacter</span><span style="font-variant-ligatures: no-common-ligatures" class="">(from: </span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">disallowedCharacters</span><span style="font-variant-ligatures: no-common-ligatures" class="">))</span></div><div style="margin: 0px; line-height: normal; color: rgb(112, 61, 170);" class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">print</span><span style="font-variant-ligatures: no-common-ligatures;" class="">(result.</span><span style="font-variant-ligatures: no-common-ligatures" class="">precomposedStringWithCanonicalMapping</span><span style="font-variant-ligatures: no-common-ligatures;" class="">.</span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">rangeOfCharacter</span><span style="font-variant-ligatures: no-common-ligatures;" class="">(from: </span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">disallowedCharacters</span><span style="font-variant-ligatures: no-common-ligatures;" class="">))</span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">}</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div></div></div></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">--- Output:</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><div style="margin: 0px; line-height: normal;" class=""><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><b class="">--- NSString:</b></span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><b class="">/мой_файл</b></span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><b class="">nil</b></span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><b class="">--- String + URL:</b></span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><b class="">/мой_файл</b></span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><b class="">Optional(Range(Swift.String.CharacterView.Index(_base: Swift.String.UnicodeScalarView.Index(_position: 3), _countUTF16: 2)..<Swift.String.CharacterView.Index(_base: Swift.String.UnicodeScalarView.Index(_position: 4), _countUTF16: 1)))</b></span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><b class="">nil</b></span></div></div><div class=""><br class=""></div><div class=""><br class=""></div></span></div><div class="">
<div class="">Regards,</div>Andrey</div>
<br class=""><div class=""><blockquote type="cite" class=""><div class="">On 10 May 2017, at 12:45, Eric Blachère via swift-corelibs-dev <<a href="mailto:swift-corelibs-dev@swift.org" class="">swift-corelibs-dev@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Thanks for the answer ! It seems a bit weird from them to advocate using NSString methods in the unavailability comment. I would rather use URL when I can even if the conversions are a bit tedious ^^<div class=""><br class=""></div><div class="">Thanks a lot,</div><div class="">Eric</div></div><div class="gmail_extra"><br class=""><div class="gmail_quote">2017-05-10 10:52 GMT+02:00 Brent Royal-Gordon <span dir="ltr" class=""><<a href="mailto:brent@architechies.com" target="_blank" class="">brent@architechies.com</a>></span>:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">> On May 8, 2017, at 9:39 AM, Eric Blachère via swift-corelibs-dev <<a href="mailto:swift-corelibs-dev@swift.org" class="">swift-corelibs-dev@swift.org</a>> wrote:<br class="">
><br class="">
> I was just wondering if there are plans to bring NSString functions manipulating paths into the native String class. (such as lastPathComponent, pathComponents etc...)<br class="">
> Because even if we can always make an extension of String to easily cast it into NSString, it's still a bit of a shame to have to do it ;)<br class="">
<br class="">
</span>Unfortunately, it seems like the decision not to include these methods on String was quite deliberate.<br class="">
<br class="">
Here's the revision where that happened: <<a href="https://github.com/apple/swift/commit/1f2390f1c75be65f57f189247bfe4f9b2fc11e3b#diff-d38f60064c3752f096c043e756d8f201R925" rel="noreferrer" target="_blank" class="">https://github.com/apple/<wbr class="">swift/commit/<wbr class="">1f2390f1c75be65f57f189247bfe4f<wbr class="">9b2fc11e3b#diff-<wbr class="">d38f60064c3752f096c043e756d8f2<wbr class="">01R925</a>> As you can see, they had that working and chose to disable it, presumably because they want you to manipulate paths through `URL`. (I wish the radar referenced in the commit message were public, but alas, it's not.)<br class="">
<span class="HOEnZb"><font color="#888888" class=""><br class="">
--<br class="">
Brent Royal-Gordon<br class="">
Architechies<br class="">
<br class="">
</font></span></blockquote></div><br class=""></div>
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