Standard input/output in Objective-C
First: Yes, I've been looking around on the net to find an answer ;) I really like the C++ method of using cin/cout in the iostream.h when communicating via the standard input/output (i.e. the Terminal). When doing this in Objective-C it gets, to me, very complicated. Seems I'm going wrong some way. My first attempt is of course to just use the cin/cout methods by importing iostream.h, but when looking for the header file I find it deeply buried (/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/stream) and I don't succeed in importing it. My conclusion from this is: I'm not supposed to use cin/cout in an Objective-C application??? Second attempt is to use Objective-C methods like: NSFileHandle *fileHandle = [NSFileHandle fileHandleWithStandardInput]; NSData *inputData; NSString *inputString; Person *aPerson = [[Person alloc] init]; printf(Type the persons first name: ); inputData = [fileHandle availableData]; inputString = [[NSString alloc] initWithData: inputData encoding:NSUTF8StringEncoding]; [aPerson setPersonsFirstName: inputString]; Feels complicated. My conclusion: I'm making it more complicated than it should be??? Happy for feedback! /Mikael___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Standard input/output in Objective-C
On Mar 23, 2010, at 5:44 PM, Mikael Wämundson wrote: First: Yes, I've been looking around on the net to find an answer ;) I really like the C++ method of using cin/cout in the iostream.h when communicating via the standard input/output (i.e. the Terminal). When doing this in Objective-C it gets, to me, very complicated. Seems I'm going wrong some way. My first attempt is of course to just use the cin/cout methods by importing iostream.h, but when looking for the header file I find it deeply buried (/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/stream) and I don't succeed in importing it. My conclusion from this is: I'm not supposed to use cin/cout in an Objective-C application??? Did you try using an objective-C++ program? in Xcode, if you make all of your .m files into .mm files, it should automatically compile as objective-c++ and then cin and cout may work... Also, you shouldn't need to do more than #include streamio.h like normal... the compiler should know where to find it. Brian Postow Senior Software Engineer Acordex Imaging Systems ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Standard input/output in Objective-C
On Mar 23, 2010, at 3:44 PM, Mikael Wämundson wrote: My first attempt is of course to just use the cin/cout methods by importing iostream.h, but when looking for the header file I find it deeply buried (/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/stream) and I don't succeed in importing it. My conclusion from this is: I'm not supposed to use cin/cout in an Objective-C application??? Wrong. You can use C++ in ObjC++ source. The header you are looking for is iostream and it is part of the standard set of headers installed somewhere in /usr/include. Ignore the headers in the kernel framework unless you're making a kernel extension, because the kernel framework is only to be used for making kernel extensions. Kernel extensions use a stripped-down version of C++. To turn an ObjC source file into an ObjC++ source file, change its extension from .m to .mm. Feels complicated. My conclusion: I'm making it more complicated than it should be??? If you feel more comfortable using stdout/stdin or cout/cin, then go ahead and use them instead. Nick Zitzmann http://www.chronosnet.com/ ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Standard input/output in Objective-C
Thnx! Just changing the suffix to .mm and rebuilding worked and the library was found! Great! /Mikael 23 mar 2010 kl. 22.56 skrev Brian Postow: On Mar 23, 2010, at 5:44 PM, Mikael Wämundson wrote: First: Yes, I've been looking around on the net to find an answer ;) I really like the C++ method of using cin/cout in the iostream.h when communicating via the standard input/output (i.e. the Terminal). When doing this in Objective-C it gets, to me, very complicated. Seems I'm going wrong some way. My first attempt is of course to just use the cin/cout methods by importing iostream.h, but when looking for the header file I find it deeply buried (/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/stream) and I don't succeed in importing it. My conclusion from this is: I'm not supposed to use cin/cout in an Objective-C application??? Did you try using an objective-C++ program? in Xcode, if you make all of your .m files into .mm files, it should automatically compile as objective-c++ and then cin and cout may work... Also, you shouldn't need to do more than #include streamio.h like normal... the compiler should know where to find it. Brian Postow Senior Software Engineer Acordex Imaging Systems ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Standard input/output in Objective-C
On Mar 23, 2010, at 2:44 PM, Mikael Wämundson wrote: inputData = [fileHandle availableData]; inputString = [[NSString alloc] initWithData: inputData encoding:NSUTF8StringEncoding]; [aPerson setPersonsFirstName: inputString]; You could just call fgets and then convert the resulting C string to an NSString. I think the reason there isn't anything Cocoa-like for this is that hardly anyone uses Objective-C to write interactive console tools. —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
