garya@plague.Berkeley.EDU (Gary Arnold) (06/06/91)
Could anyone out there give me any information on how to transfer Mac GIF files to an IBM over the modem? GIF is a "standard" graphics format, so it should work on the Mac and the IBM. Do I need to convert the Mac file to pure data (no resource)? If so, how? How about transferring from IBM to Mac? Thanks a bunch! Gary Arnold garya@plague.berkeley.edu
dnebing@bgsuvax.UUCP (david Dnebingr) (06/07/91)
From article <1991Jun6.051440.9591@agate.berkeley.edu>, by garya@plague.Berkeley.EDU (Gary Arnold): > > Could anyone out there give me any information on how to transfer Mac GIF > files to an IBM over the modem? GIF is a "standard" graphics format, so > it should work on the Mac and the IBM. Do I need to convert the Mac file to > pure data (no resource)? If so, how? How about transferring from IBM to > Mac? Thanks a bunch! > > Gary Arnold > garya@plague.berkeley.edu I just read a review in MacUser that stated the new version of MacLink Plus/Translators was capable of converting between Mac and IBM formats. This method saves the converted file to disk, which isn't quite what you are looking for, but after converting the file you could use more conventional methods. void main(){ Programmer MrNeb; Address dnebing@andy.bgsu.edu; Address dnebing@opie.bgsu.edu; /* I'll stop the world and melt with you */ /* Modern English */ }
wwilliam@dvorak.amd.com (Wade Williams) (06/13/91)
In article <1991Jun6.051440.9591@agate.berkeley.edu> garya@plague.Berkeley.EDU (Gary Arnold) writes: > >Could anyone out there give me any information on how to transfer Mac GIF >files to an IBM over the modem? GIF is a "standard" graphics format, so >it should work on the Mac and the IBM. Do I need to convert the Mac file to >pure data (no resource)? If so, how? How about transferring from IBM to >Mac? Thanks a bunch! > >Gary Arnold >garya@plague.berkeley.edu Hi, I would like to add my .02 to this question.. I have a question which specifically involves the way Macintosh systems handle files. I can successfully down load, link, and uudecode files on a Sun. I then transfer the files to my Mac via ftp. Once the files are on the Mac, I always must edit the file type to GIFf and often the creator to BOZO before Giffer or QuickGIF will recognize the file as a GIF picture. Once I do this, I can just click on the particular picture and GIFFER will automatically launch itself and load the picture. So you ask, what is the problem? Well, it seems that somehow the actual gif files are being modified so if anyone would like to copy them for use on a Sun or other UNIX or GIF viewing system, the files will not work. Does anyone know how the Mac modifies GIF files, and how to change them back once they are on a Mac? I have looked at the files with DiskTop and there appear to be only data forks, and no resource forks have been created. That was my first guess since Mac files often are created with two separate forks and create binary transfer problems on other systems. Any help is appreciated!!!!! Thanks, Wade wwilliam@dvorak.amd.com
jhannah@netcom.COM (Jamal Hannah) (06/18/91)
In article <1991Jun13.153606.13977@dvorak.amd.com> wwilliam@dvorak.amd.com (Wade Williams) writes: >In article <1991Jun6.051440.9591@agate.berkeley.edu> garya@plague.Berkeley.EDU (Gary Arnold) writes: >> >>Could anyone out there give me any information on how to transfer Mac GIF >>files to an IBM over the modem? GIF is a "standard" graphics format, so >>it should work on the Mac and the IBM. Do I need to convert the Mac file to >>pure data (no resource)? If so, how? How about transferring from IBM to >>Mac? Thanks a bunch! >> >>Gary Arnold >>garya@plague.berkeley.edu > >Hi, I would like to add my .02 to this question.. I have a question which >specifically involves the way Macintosh systems handle files. I can >successfully down load, link, and uudecode files on a Sun. I then transfer >the files to my Mac via ftp. Once the files are on the Mac, I always must >edit the file type to GIFf and often the creator to BOZO before Giffer or >QuickGIF will recognize the file as a GIF picture. Once I do this, I can >just click on the particular picture and GIFFER will automatically launch >itself and load the picture. > > >So you ask, what is the problem? Well, it seems that somehow the actual >gif files are being modified so if anyone would like to copy them for use >on a Sun or other UNIX or GIF viewing system, the files will not work. >Does anyone know how the Mac modifies GIF files, and how to change them >back once they are on a Mac? I have looked at the files with DiskTop and >there appear to be only data forks, and no resource forks have been created. >That was my first guess since Mac files often are created with two separate >forks and create binary transfer problems on other systems. > >Wade wwilliam@dvorak.amd.com First of all, there is NO significant difference between a GIF file on a Mac and one on an IBM.. you just need to know what to do with the data you have.. in other words: whenever transferring, rememeber to be in BINARY mode.. not "MacBinary", and not "ASCII".. also, a GIF file on the Mac dosnt have to have it's type set to "GIFf" to be viewed by QuickGIF.. QuickGIF will open and convert it (set the type and creator for you) if the file has a ".gif" or ".GIF" on the end of the name. As for Giffer, (version 1.0d1 should be out now) I think it is smart enough to open any text file on the assumption that it is a GIF, but I am not sure.. (a GIF file viewed with a text editor should have the ASCII chars "GIF87" or "GIF89" as the first 8 bytes of data. (you may have to use ResEdit or DiskTop to set TYPE to GIFf still) When transferring a GIF to a Sun, Amiga, IBM, or whatever, whether you use FTP, Xmodem or Zmodem, you must make sure you are in binary transfer mode.. that means that the file's data fork is sent.. in it's entirty (No, not with the Mac-Spacific 512 byte header.. thats what MacBinary mode does).. if you use ASCII mode, youre asking for trouble, becouse it will do things to bytes that would be interpited as certain control-characters. (such as linefeeds) If your SUN still dosnt recognise the GIFs after you transfer them in binary mode, something else must be wrong. -- +--------------------------------------------------------------------------+ | Jamal Hannah | Internet: jhannah@netcom.com | | | UUCP: ..!apple!netcom!jhannah | +--------------------------------------------------------------------------+