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file extensions

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  • S Shog9 0

    I have a lot of XML files that are given other extensions, and text files that are given other extensions, and it would really be nice to have a naming scheme that would allow those facts to be represented in the name (and file associations...)

    ----

    ...the wind blows over it and it is gone, and its place remembers it no more...

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    Nigel Savidge
    wrote on last edited by
    #20

    Or to be able to associate apps, icons etc with xml files based on their contents rather than just have one app and icon covering all xml files. I have a shell extension that does just that!


    Team Leader - Team Code Project[^] :cool:

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    • Z zoid

      Is there any (compelling) reason to continue using 3 character file extensions? I am in the process of choosing the extensions that my app will use and I am leaning toward using 4 - 6 character extensions. The main reasons are: To avoid colisions with extensions that are used by other apps. The extension names do a better job explaning what kind of data is stored in the file. I am worried however, because it seems almost applications still use 3 letter extensions for their files. Aside from compatibilty issues with old 8.3 format DOS systems which I think for 99% of current applications isn't an issue anymore, why are people avoiding using longer file extensions for new formats?

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      Pete OHanlon
      wrote on last edited by
      #21

      For our software, we don't limit ourselves. In fact, since changing to longer extensions we have found that we don't need to worry about conflicting with other applications. It's much easier to have a descriptive file type, so rather than using something like DOC you could actually call it Document.

      Deja View - the feeling that you've seen this post before.

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      • C Chris Maunder

        By calling me youngster you are my new favourite person of Today.

        cheers, Chris Maunder

        CodeProject.com : C++ MVP

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        Paul Watson
        wrote on last edited by
        #22

        Mark is 86 years old. Anyone under 60 is a youngster to him... *ducks* (Well done on beating Scotland. 335 is a whopping score even against Scotland.)

        regards, Paul Watson Ireland & South Africa

        Shog9 wrote:

        And with that, Paul closed his browser, sipped his herbal tea, fixed the flower in his hair, and smiled brightly at the multitude of cute, furry animals flocking around the grassy hillside where he sat coding Ruby on his Mac...

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        • P peterchen

          I'm using them myself in a few places, it's better. The only reason against I can imagine is users that are not yet adjusted. Worsened by the likelyhood that they still use some tool that isn't LFN aware and "suddenly lose their data anytime they copy it to somewhere else randomly without having done anything at all." So the question for you is: can you train a few luddites people dedicated to not changing a workign system, or is their opinion so valuable to you (or their antics so devastating) that you rather not dare tickling them. One thing to be aware is the pattern matching of file search. If you search for "*.zoidfiles", Windows will return all files with the extension ".zoi" as well - because that would be the extension of the 8.3 filename. (that's why, *.html also matches *.htm)


          Developers, Developers, Developers, Developers, Developers, Developers, Velopers, Develprs, Developers!
          We are a big screwed up dysfunctional psychotic happy family - some more screwed up, others more happy, but everybody's psychotic joint venture definition of CP
          Linkify!|Fold With Us!

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          zoid
          wrote on last edited by
          #23

          peterchen wrote:

          One thing to be aware is the pattern matching of file search. If you search for "*.zoidfiles", Windows will return all files with the extension ".zoi" as well - because that would be the extension of the 8.3 filename. (that's why, *.html also matches *.htm)

          Thanks for the tip, didn't realize that the FindFirstFile Api worked this way.

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          • Z zoid

            Is there any (compelling) reason to continue using 3 character file extensions? I am in the process of choosing the extensions that my app will use and I am leaning toward using 4 - 6 character extensions. The main reasons are: To avoid colisions with extensions that are used by other apps. The extension names do a better job explaning what kind of data is stored in the file. I am worried however, because it seems almost applications still use 3 letter extensions for their files. Aside from compatibilty issues with old 8.3 format DOS systems which I think for 99% of current applications isn't an issue anymore, why are people avoiding using longer file extensions for new formats?

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            Paul Watson
            wrote on last edited by
            #24

            If you sent my mom a Word document with .document as the extension she'd delete it thinking it was a virus or some such. .doc is ingrained (as is .xls, .pdf, .txt, .exe, .ppt etc.) For new apps I'd say think of who your users are. If they are techies then longer extensions are fine (.xaml, .application, .csproj, .config etc.) If they are non-techy users then think hard before using more than three letters.

            regards, Paul Watson Ireland & South Africa

            Shog9 wrote:

            And with that, Paul closed his browser, sipped his herbal tea, fixed the flower in his hair, and smiled brightly at the multitude of cute, furry animals flocking around the grassy hillside where he sat coding Ruby on his Mac...

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            • N Nigel Savidge

              Microsoft use a six letter one in: Application.exe.config Although that's also a double extension - are there any rules for double extensions?


              Team Leader - Team Code Project[^] :cool:

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              Miszou
              wrote on last edited by
              #25

              Nigel Savidge wrote:

              are there any rules for double extensions?

              Yes. Try sending one as an attachment through the company spam filter...


              Sunrise Wallpaper Project | The StartPage Randomizer | A Random Web Page

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              • P peterchen

                Nigel Savidge wrote:

                are there any rules for double extensions?

                That they are misleading if you have "hide known extensions" turned on?


                Developers, Developers, Developers, Developers, Developers, Developers, Velopers, Develprs, Developers!
                We are a big screwed up dysfunctional psychotic happy family - some more screwed up, others more happy, but everybody's psychotic joint venture definition of CP
                Linkify!|Fold With Us!

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                G Offline
                Gary R Wheeler
                wrote on last edited by
                #26

                peterchen wrote:

                "hide known extensions"

                Very possibly the dumbest program option I've ever seen :|.


                Software Zen: delete this;

                Fold With Us![^]

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                • P Paul Watson

                  Mark is 86 years old. Anyone under 60 is a youngster to him... *ducks* (Well done on beating Scotland. 335 is a whopping score even against Scotland.)

                  regards, Paul Watson Ireland & South Africa

                  Shog9 wrote:

                  And with that, Paul closed his browser, sipped his herbal tea, fixed the flower in his hair, and smiled brightly at the multitude of cute, furry animals flocking around the grassy hillside where he sat coding Ruby on his Mac...

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                  Lost User
                  wrote on last edited by
                  #27

                  Paul Watson wrote:

                  (Well done on beating Scotland. 335 is a whopping score even against Scotland.)

                  :) Seems our batsmen have found some form.

                  System.IO.Path.IsPathRooted() does not behave as I would expect

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                  • T Todd Smith

                    Depends on what kind of inter-operability you require. Will your files be processed by lots of other applications most of which are unkown to you (ex mp3 files)? If not then choose whatever you want. I know applications such as SolidWorks (3D CAD) use .sldprt, .sldblk, .sldasm, etc. But for Office there's probably thousands of home grown tools and code out there that assumes 3 character extensions and going with something else would only wreak havoc.

                    Todd Smith

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                    Luis Alonso Ramos
                    wrote on last edited by
                    #28

                    Todd Smith wrote:

                    But for Office there's probably thousands of home grown tools and code out there that assumes 3 character extensions and going with something else would only wreak havoc.

                    Office 2007's extensions all have an x at the end: docx for example. They represent the new XML file format.

                    Luis Alonso Ramos Intelectix Chihuahua, Mexico

                    Not much here: My CP Blog!

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                    • L Lost User

                      Paul Watson wrote:

                      (Well done on beating Scotland. 335 is a whopping score even against Scotland.)

                      :) Seems our batsmen have found some form.

                      System.IO.Path.IsPathRooted() does not behave as I would expect

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                      Vikram A Punathambekar
                      wrote on last edited by
                      #29

                      Your batsmen never had a problem - even in that whitewash, they performed very well. It was your bowling that was killing you.

                      Cheers, Vikram.


                      The cold will freeze our stares We won't care...

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                      • V Vikram A Punathambekar

                        Your batsmen never had a problem - even in that whitewash, they performed very well. It was your bowling that was killing you.

                        Cheers, Vikram.


                        The cold will freeze our stares We won't care...

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                        L Offline
                        Lost User
                        wrote on last edited by
                        #30

                        Vikram A Punathambekar wrote:

                        Your batsmen never had a problem

                        They failed pretty miserably in the finals against England here last Summer.

                        Vikram A Punathambekar wrote:

                        It was your bowling that was killing you.

                        It was Lee that was giving our bowlers a bad name, now he's out and Clark is in we are much better off

                        System.IO.Path.IsPathRooted() does not behave as I would expect

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                        • Z zoid

                          Is there any (compelling) reason to continue using 3 character file extensions? I am in the process of choosing the extensions that my app will use and I am leaning toward using 4 - 6 character extensions. The main reasons are: To avoid colisions with extensions that are used by other apps. The extension names do a better job explaning what kind of data is stored in the file. I am worried however, because it seems almost applications still use 3 letter extensions for their files. Aside from compatibilty issues with old 8.3 format DOS systems which I think for 99% of current applications isn't an issue anymore, why are people avoiding using longer file extensions for new formats?

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                          Lost User
                          wrote on last edited by
                          #31

                          why not, but only one dot in the name. I hate file names like this "application.exe.config".

                          1 Reply Last reply
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                          • Z zoid

                            peterchen wrote:

                            One thing to be aware is the pattern matching of file search. If you search for "*.zoidfiles", Windows will return all files with the extension ".zoi" as well - because that would be the extension of the 8.3 filename. (that's why, *.html also matches *.htm)

                            Thanks for the tip, didn't realize that the FindFirstFile Api worked this way.

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                            Mike Poz
                            wrote on last edited by
                            #32

                            One last thing to be aware of: Optical disc standard ISO 9660 http://en.wikipedia.org/wiki/ISO_9660[^], check the restrictions section. Different formats have different restrictions, one of them is a 3 character extension, another is no file names can have more than one dot in it. I'm sure there are other "standards" that have similar restrictions, but if you're going with life file system file associations, there shouldn't be any reason why you can't have extended extensions. Of course, there's legacy software to take into consideration too.

                            Mike Poz

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                            • S Shog9 0

                              I have a lot of XML files that are given other extensions, and text files that are given other extensions, and it would really be nice to have a naming scheme that would allow those facts to be represented in the name (and file associations...)

                              ----

                              ...the wind blows over it and it is gone, and its place remembers it no more...

                              C Offline
                              C Offline
                              Chris J Saunders
                              wrote on last edited by
                              #33

                              Do MIME types relate to your problem? Regards Chris Saunders

                              S 1 Reply Last reply
                              0
                              • Z zoid

                                Is there any (compelling) reason to continue using 3 character file extensions? I am in the process of choosing the extensions that my app will use and I am leaning toward using 4 - 6 character extensions. The main reasons are: To avoid colisions with extensions that are used by other apps. The extension names do a better job explaning what kind of data is stored in the file. I am worried however, because it seems almost applications still use 3 letter extensions for their files. Aside from compatibilty issues with old 8.3 format DOS systems which I think for 99% of current applications isn't an issue anymore, why are people avoiding using longer file extensions for new formats?

                                F Offline
                                F Offline
                                Frank Kahn
                                wrote on last edited by
                                #34

                                I thought _MAX_EXT would kill that idea but actually, it has a value of 256.

                                Frank

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                                • P Paul Watson

                                  Mark is 86 years old. Anyone under 60 is a youngster to him... *ducks* (Well done on beating Scotland. 335 is a whopping score even against Scotland.)

                                  regards, Paul Watson Ireland & South Africa

                                  Shog9 wrote:

                                  And with that, Paul closed his browser, sipped his herbal tea, fixed the flower in his hair, and smiled brightly at the multitude of cute, furry animals flocking around the grassy hillside where he sat coding Ruby on his Mac...

                                  E Offline
                                  E Offline
                                  ednrgc
                                  wrote on last edited by
                                  #35

                                  Paul Watson wrote:

                                  Mark is 86 years old.

                                  I hope that I also live long enough to be a burden on my kids :laugh:

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                                  • Z zoid

                                    Is there any (compelling) reason to continue using 3 character file extensions? I am in the process of choosing the extensions that my app will use and I am leaning toward using 4 - 6 character extensions. The main reasons are: To avoid colisions with extensions that are used by other apps. The extension names do a better job explaning what kind of data is stored in the file. I am worried however, because it seems almost applications still use 3 letter extensions for their files. Aside from compatibilty issues with old 8.3 format DOS systems which I think for 99% of current applications isn't an issue anymore, why are people avoiding using longer file extensions for new formats?

                                    E Offline
                                    E Offline
                                    ednrgc
                                    wrote on last edited by
                                    #36

                                    I've never had any complaints about my extension. :laugh:

                                    1 Reply Last reply
                                    0
                                    • Z zoid

                                      Is there any (compelling) reason to continue using 3 character file extensions? I am in the process of choosing the extensions that my app will use and I am leaning toward using 4 - 6 character extensions. The main reasons are: To avoid colisions with extensions that are used by other apps. The extension names do a better job explaning what kind of data is stored in the file. I am worried however, because it seems almost applications still use 3 letter extensions for their files. Aside from compatibilty issues with old 8.3 format DOS systems which I think for 99% of current applications isn't an issue anymore, why are people avoiding using longer file extensions for new formats?

                                      M Offline
                                      M Offline
                                      Michael_White
                                      wrote on last edited by
                                      #37

                                      What it would come down to is target market. I was just thinking about that myself -- and what it came to, is that in the next year my company will be fully windows Vista, so I don't think that will be a problem for me, when I go forward. I'm in a limited market and can control my environment, but if I were selling, I would need to consider compatablity. If you know your target, then that makes the decision for you. Michael White


                                      In the darkness of dispair there is a bright light of hope and understanding, and boy it sure ain't me.


                                      1 Reply Last reply
                                      0
                                      • Z zoid

                                        Is there any (compelling) reason to continue using 3 character file extensions? I am in the process of choosing the extensions that my app will use and I am leaning toward using 4 - 6 character extensions. The main reasons are: To avoid colisions with extensions that are used by other apps. The extension names do a better job explaning what kind of data is stored in the file. I am worried however, because it seems almost applications still use 3 letter extensions for their files. Aside from compatibilty issues with old 8.3 format DOS systems which I think for 99% of current applications isn't an issue anymore, why are people avoiding using longer file extensions for new formats?

                                        T Offline
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                                        tlw1145
                                        wrote on last edited by
                                        #38

                                        Visual Studio uses .vbproj and other similar extensions for some of their files. The origination comes from the need to conserve disk space and memory. Plus, DEC had a form of character storage called Radix50 which stored 3 characters in one 16-bit word, which made it convenient to hold the extension (and the file name, too). It's just a legacy thing. There really is no more need for it. Unix uses the form (such as .o for object file or .c for C source code) in some cases, but it does not constitute an extension. It is all just part of the file name.

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                                        • C Chris J Saunders

                                          Do MIME types relate to your problem? Regards Chris Saunders

                                          S Offline
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                                          Shog9 0
                                          wrote on last edited by
                                          #39

                                          Apart from using it to recognize files pulled from the Web or email, i'm not aware of much in the way of MIME support in Windows. But it'd be nice.

                                          ----

                                          ...the wind blows over it and it is gone, and its place remembers it no more...

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