Re: File exists
Thanks for the code and info, Kay.
JB
> On Apr 2, 2016, at 10:53 AM, Kay C Lan wrote:
>
> On Sat, Apr 2, 2016 at 4:48 PM, JB wrote:
>> If I open a file for read or write and the file does
>> not exist it will be created.
>
> Just to clarify, that statement is incorrect.
>
> If you open a file for 'write' and the file does not exist, it will be
> created.
>
> if you open a file for 'read' and the file does not exist 'the result'
> will be "can't open that file" and NO file is created.
>
> on mouseUp
> set the defaultFolder to specialFolderPath("documents")
> open file "this is a test.lcdoc" for read
> if (the result is "can't open that file") then
> --check if a file was created
> if (there is a file "this is a test.lcdoc") then
> answer "A file was created!"
> else
> answer "The file was NOT created."
> end if
> else
> answer "You can read from it now!"
> end if
> end mouseUp
>
> Please also note that Richmond's example is misleading. If you use
> 'read from file' without first using 'open file' then regardless of
> whether the file exists or not, 'it' will always be empty.
>
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Re: File exists
On 2.04.2016 20:53, Kay C Lan wrote:
On Sat, Apr 2, 2016 at 4:48 PM, JB wrote:
If I open a file for read or write and the file does
not exist it will be created.
Just to clarify, that statement is incorrect.
If you open a file for 'write' and the file does not exist, it will be created.
if you open a file for 'read' and the file does not exist 'the result'
will be "can't open that file" and NO file is created.
on mouseUp
set the defaultFolder to specialFolderPath("documents")
open file "this is a test.lcdoc" for read
if (the result is "can't open that file") then
--check if a file was created
if (there is a file "this is a test.lcdoc") then
answer "A file was created!"
else
answer "The file was NOT created."
end if
else
answer "You can read from it now!"
end if
end mouseUp
Please also note that Richmond's example is misleading. If you use
'read from file' without first using 'open file' then regardless of
whether the file exists or not, 'it' will always be empty.
Whoops: sorry about that one.
Richmond.
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Re: File exists
On Sat, Apr 2, 2016 at 4:48 PM, JB wrote:
> If I open a file for read or write and the file does
> not exist it will be created.
Just to clarify, that statement is incorrect.
If you open a file for 'write' and the file does not exist, it will be created.
if you open a file for 'read' and the file does not exist 'the result'
will be "can't open that file" and NO file is created.
on mouseUp
set the defaultFolder to specialFolderPath("documents")
open file "this is a test.lcdoc" for read
if (the result is "can't open that file") then
--check if a file was created
if (there is a file "this is a test.lcdoc") then
answer "A file was created!"
else
answer "The file was NOT created."
end if
else
answer "You can read from it now!"
end if
end mouseUp
Please also note that Richmond's example is misleading. If you use
'read from file' without first using 'open file' then regardless of
whether the file exists or not, 'it' will always be empty.
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Re: File exists
Thank you, Richmond! Your help is always appreciated. JB > On Apr 2, 2016, at 2:03 AM, RM wrote: > > Richmond. ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: File exists
I LIKE THAT! thank you very much. JB > On Apr 2, 2016, at 2:00 AM, Thierry Douez wrote: > > Hi, > > there is a file ".." > > HTH, > > Thierry > > > 2016-04-02 10:48 GMT+02:00 JB : > >> If I open a file for read or write and the file does >> not exist it will be created. Is there a way to see >> if the file exists before opening it? I do not want >> a file to be created if it does not exist. I guess I >> could check the creation date and if it was just >> created then delete it but I was wondering if there >> is a better way. >> >> JB >> > -- > > Thierry Douez - http://sunny-tdz.com > sunnYrex - sunnYtext2speech - sunnYperl - sunnYmidi - sunnYmage > ___ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: File exists
Naively I tried this in a button: on mouseUp if exists(file "HereWeGo.txt") then open file "HereWeGo.txt" for write else put "no such file" end if end mouseUp AND the thing didn't work because 'exists' only works for objects within Livecode. BUT this seems a reasonable way to check for a file's existence: on mouseUp read from file "HereWeGo.txt" for 1 line if it is empty then put "no such file" end if end mouseUp Richmond. On 2.04.2016 11:48, JB wrote: If I open a file for read or write and the file does not exist it will be created. Is there a way to see if the file exists before opening it? I do not want a file to be created if it does not exist. I guess I could check the creation date and if it was just created then delete it but I was wondering if there is a better way. JB ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: File exists
Hi, there is a file ".." HTH, Thierry 2016-04-02 10:48 GMT+02:00 JB : > If I open a file for read or write and the file does > not exist it will be created. Is there a way to see > if the file exists before opening it? I do not want > a file to be created if it does not exist. I guess I > could check the creation date and if it was just > created then delete it but I was wondering if there > is a better way. > > JB > -- Thierry Douez - http://sunny-tdz.com sunnYrex - sunnYtext2speech - sunnYperl - sunnYmidi - sunnYmage ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: File exists
Files will do it; I forget so easily. JB > On Apr 2, 2016, at 1:48 AM, JB wrote: > > If I open a file for read or write and the file does > not exist it will be created. Is there a way to see > if the file exists before opening it? I do not want > a file to be created if it does not exist. I guess I > could check the creation date and if it was just > created then delete it but I was wondering if there > is a better way. > > JB > > ___ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
File exists
If I open a file for read or write and the file does not exist it will be created. Is there a way to see if the file exists before opening it? I do not want a file to be created if it does not exist. I guess I could check the creation date and if it was just created then delete it but I was wondering if there is a better way. JB ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: [BEGINER] How can I check the local machine to see if a file exists
Got delete working too. Now I need to spice it up a bit.
On Sat, May 18, 2013 at 12:00 AM, Shawn Blc wrote:
> Thank you Mr. Eller. How about delete file from remote server?
>
> I have this, but not working. Can't find anything on nabble.
>
> *delete* URL ("http://someSubDomain.on-rev.com/test.txt";)
>
>
> On Fri, May 17, 2013 at 11:12 PM, Roger Eller > wrote:
>
>> You need to know the path, but it's as easy as:
>>
>> if there is a file "c:/test.txt" then
>>answer "file exists"
>> else
>>answer" file doesn't exist"
>> end if
>>
>> ~Roger
>> On May 17, 2013 11:54 PM, "Shawn Blc" wrote:
>>
>> > How can I check the local machine to see if a file exists?
>> > ___
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>
>
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Re: [BEGINER] How can I check the local machine to see if a file exists
Thank you Mr. Eller. How about delete file from remote server?
I have this, but not working. Can't find anything on nabble.
*delete* URL ("http://someSubDomain.on-rev.com/test.txt";)
On Fri, May 17, 2013 at 11:12 PM, Roger Eller
wrote:
> You need to know the path, but it's as easy as:
>
> if there is a file "c:/test.txt" then
>answer "file exists"
> else
>answer" file doesn't exist"
> end if
>
> ~Roger
> On May 17, 2013 11:54 PM, "Shawn Blc" wrote:
>
> > How can I check the local machine to see if a file exists?
> > ___
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Re: [BEGINER] How can I check the local machine to see if a file exists
You need to know the path, but it's as easy as: if there is a file "c:/test.txt" then answer "file exists" else answer" file doesn't exist" end if ~Roger On May 17, 2013 11:54 PM, "Shawn Blc" wrote: > How can I check the local machine to see if a file exists? > ___ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your > subscription preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
[BEGINER] How can I check the local machine to see if a file exists
How can I check the local machine to see if a file exists? ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Checking if file exists in a Windows system directory
There can be. First, if the enclosing folder does not have at least read permission, you will see nothing in the folder. Also, even under XP, certain folders contents were hidden, even to an administrator, until you told Windows you did in fact want to see the files in that folder. (Silly I know. What admin is going to decline to see the files in a folder he is trying to open??) Then there are more granular permissions, like list folder / read data, traverse folder / execute file, read attributes, read extended attributes, etc. Most of these are not generally used or altered from the norm, but far be it from me to assume anything about your environment. Bob On Sep 24, 2012, at 2:47 PM, Magicgate Software - Skip Kimpel wrote: > Are there permission limitations to see if a file exists within a > Windows system directory (c:\windows\system32\myfile.dll)? > > For some reason I am not getting results returned and my code is being > ignored. > > Thanks! > > ___ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Checking if file exists in a Windows system directory
Are there permission limitations to see if a file exists within a Windows system directory (c:\windows\system32\myfile.dll)? For some reason I am not getting results returned and my code is being ignored. Thanks! ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
