RE: lingo-l File IO - how do I erase text in a file? SOLVED...
Gosh! Wouldn't it just be easier to delete the file and then rewriting to it rather than going through all those repeats and stuff? Cordially, Pranav Negandhi New Media Applications. Learnet India Limited, Mumbai. Phone: 91-22-859 8042 Ext: 410 snip I figured out a workaround, clunky as it may be. --- set gTheWriteText = removeQuotes(gTheWriteText) if the last item of gTheWriteText = 3110 then nothing else put SPACE after gTheWriteText end if on removeQuotes dataString repeat with a = 1 to the number of chars in dataString if char a of dataString = QUOTE then delete char a of dataString end repeat . -Steven snip [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/LUJ/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]) Lingo-L is for learning and helping with programming Lingo. Thanks!]
RE: lingo-l File IO - how do I erase text in a file? SOLVED...
Gosh! Wouldn't it just be easier to delete the file and then rewriting to it rather than going through all those repeats and stuff? Easier? Maybe, but as much fun? I say thee nay! =) Deleting the file requires recreating the file and then writing to the file again. What's easier? Running a repeat loop, or doing complex file management? The repeat loop won't fail, whereas the File IO might act up at any time. Best to minimize the work the computer has to do (in this case a 90MHz Pentium I). I might be a victim of superstition here, but it feels like a safer bet to run a repeat loop than have to recreate the file over and over. I am saving CONSTANTLY to this file. Deleting, creating, and writing to a file over and over doesn't seem a good idea. I'm thinking that after thousands of times of doing that, the hard drive would start losing sectors and require defragging. Of course, I'm no hard drive/OS tech, so I'm just guessing. At any rate, it works now, so all is good. Thanks, Steven [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/LUJ/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]) Lingo-L is for learning and helping with programming Lingo. Thanks!]
RE: lingo-l File IO - how do I erase text in a file?
Hi Kerry I got a little lost in the part about the 4 and the 3 and 0 and the 4th 0 of the third minor seventh. Cordially, Kerry Thompson That's the problem with you exBostonians.. you lose a little hair and you get totally befuddled by by the 4th 0 of the third minor seventh. you should take up hockey as a specator sport... it might help clear up your mind a bit ;-) mark [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/LUJ/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]) Lingo-L is for learning and helping with programming Lingo. Thanks!]
RE: lingo-l File IO - how do I erase text in a file?
Hi Steven did you try to do the following set someFile = new( Xtra FileIO) errorCode = openFile(someFile, FilePath, 0) errorCode = delete someFile errorCode = closeFile( someFile ) set someFile = 0 it might work just a wild stab in the dark Sincerely Mark R. Jonkman [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/LUJ/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]) Lingo-L is for learning and helping with programming Lingo. Thanks!]
RE: lingo-l File IO - how do I erase text in a file? SOLVED...
If you really have to do this stuff often, and your strings aren't too long (64k, if I remember correctly) you can try the setPref command. Cordially, Pranav Negandhi New Media Applications. Learnet India Limited, Mumbai. Phone: 91-22-859 8042 Ext: 410 snip Deleting the file requires recreating the file and then writing to the file again. What's easier? Running a repeat loop, or doing complex file management? The repeat loop won't fail, whereas the File IO might act up at any time. Best to minimize the work the computer has to do (in this case a 90MHz Pentium I). I might be a victim of superstition here, but it feels like a safer bet to run a repeat loop than have to recreate the file over and over. I am saving CONSTANTLY to this file. Deleting, creating, and writing to a file over and over doesn't seem a good idea. I'm thinking that after thousands of times of doing that, the hard drive would start losing sectors and require defragging. snip [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/LUJ/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]) Lingo-L is for learning and helping with programming Lingo. Thanks!]
Re: lingo-l File IO - how do I erase text in a file?
Is there Some way to just delete the last char of the text file each time it opens it to save and then write to it How about: theText = readFile (theFile) delete theText.char[theText.length] writeString (theFile, theText) Does that do what you want? I got a little lost in the part about the 4 and the 3 and 0 and the 4th 0 of the third minor seventh. Cordially, Kerry Thompson [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/LUJ/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]) Lingo-L is for learning and helping with programming Lingo. Thanks!]
RE: lingo-l File IO - how do I erase text in a file?
I'm using Director 6 so I can't use dot syntax :( Allow me to get a little more detailed. FileIO obviously doesn't overwrite an entire text file when it writes to a file, it just writes from char a to char b. If there are more characters already in the text file beyond char b, they remain untouched. I have a linear list I am saving to a text file. I am converting the linear list to a string and removing the brackets and quotes. Let's say the end result is a string 100 characters long. I write the 100 character long string to a text file. Now, in one case, the string is 101 characters long, and it writes that to the text file. Now the text file is 101 characters long. If I write my 100 character long string to that text file, it only overwrites the first 100 characters of the text file, leaving character 101 there. The next time I read that file, it reads the last item in the list with a 0 at the end of it, which effectively breaks my code. I tried to add a space to the end of the string to overwrite the trailing zero, but when it wrote 3110 it wrote 3110 which added 2 spaces to the overall length. Same problem. I've decided that the only way to really handle this is to do a short repeat where it checks to see if the last char of the string is a space, and if so, delete it. This should solve the problem, in theory. If you have any other ideas, please let me know. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Kerry Thompson Sent: Friday, August 10, 2001 1:12 AM To: [EMAIL PROTECTED] Subject: Re: lingo-l File IO - how do I erase text in a file? Is there Some way to just delete the last char of the text file each time it opens it to save and then write to it How about: theText = readFile (theFile) delete theText.char[theText.length] writeString (theFile, theText) Does that do what you want? I got a little lost in the part about the 4 and the 3 and 0 and the 4th 0 of the third minor seventh. Cordially, Kerry Thompson [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/LUJ/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]) Lingo-L is for learning and helping with programming Lingo. Thanks!] [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/LUJ/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]) Lingo-L is for learning and helping with programming Lingo. Thanks!]
RE: lingo-l File IO - how do I erase text in a file?
FileIO obviously doesn't overwrite an entire text file when it writes to a file, it just writes from char a to char b. If there are more characters already in the text file beyond char b, they remain untouched. I've had the same problem. The only workaround I could come up with was to delete the contents and write it out again amended. Some delete functions would be really useful - other than just the entire contents; which is all it seems to provide. Could you use BudAPI's ini functions instead? [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/LUJ/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]) Lingo-L is for learning and helping with programming Lingo. Thanks!]
RE: lingo-l File IO - how do I erase text in a file? SOLVED...
sorta... I figured out a workaround, clunky as it may be. --- set gTheWriteText = removeQuotes(gTheWriteText) if the last item of gTheWriteText = 3110 then nothing else put SPACE after gTheWriteText end if on removeQuotes dataString repeat with a = 1 to the number of chars in dataString if char a of dataString = QUOTE then delete char a of dataString end repeat return dataString end --- This puts a space over the 0 where the 3110 would be. But now the last item in the list when it brings it back in will be 321 . So, I just delete the last char of dataString if it = SPACE before putting quotes back into the list. on replaceQuotes dataString if the last char of dataString = SPACE then delete the last char of dataString repeat with a = 1 to the number of items of dataString if char 1 of item a of dataString = SPACE then delete char 1 of item a of dataString put QUOTE before item a of dataString put QUOTE after item a of dataString end repeat return dataString end I just realized, though, that I could have solved that problem differently by just saying string(value(x)) since they are numbers. I hope this helps somebody else. You can retrieve the number of characters in a file using FileIO, so you can easily add a bunch of spaces to the end of your string you are writing and delete them all when you read them: repeat while the last char of dataString = SPACE delete the last char of dataString end repeat -Steven [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/LUJ/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]) Lingo-L is for learning and helping with programming Lingo. Thanks!]
