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TrFile_ExchangeFiles |
Exchanges two files on disk
Syntax
TrFile_ExchangeFiles ( switches ; filePath1 ; filePath2 )
Parameters
| switches | modifies the behavior of the function |
| filePath1 | the path to the first file |
| filePath2 | the path to the second file |
Switches
Switches can be empty or this:
| -AllowDifferentVolumes | allow exchanging of files on different disks. Note that it may take more time to exchange the two files. |
Returned Result
Data type returned
Error code
Result
The returned result is an error code. An error always starts with 2 dollars, followed by the error code. You should always check for errors. Returned error codes can be:
| 0 | no error | the files were exchanged |
| $$-43 | fnfErr | one (or two) of the files not found |
| $$-1303 | diffVolErr | the 2 files are on different volumes |
Other errors may be returned.
Originated in
Troi File Plug-in 10.0
Compatibility
FileMaker Pro 17 to FileMaker Pro 21 (2024)
Considerations
You can use the TrFile_ExchangeFiles function to quickly replace a file with an updated file.
When the function returns the error code $$-1303, you can use the switch -AllowDifferentVolumes.
Example
We assume that in your FileMaker file the following fields are defined:
gErrorCode Global, number
gFilePath1 Global, text
gFilePath2 Global, textgFilePath1 and gFilePath2 should contain the path to existing files, for example “D:\Logs\Current.TXT” and
“D:\Work\Updated.TXT”. In a script add the following script steps:
Set Variable [ $ErrorCode ; TrFile_ExchangeFiles ( "-Unused" ; gFilePath1 ; gFilePath2 ) ]
Set Field [ gErrorCode ; $ErrorCode // save the error code too ]This will (quickly) exchange the two files. After this step the file “D:\Logs\Current.TXT” will have the contents of “D:\Work\Updated.TXT” and vice versa.
Example 2
In a script add the following script stept:
Set Field [ gErrorCode ; TrFile_ExchangeFiles ( "-AllowDifferentVolumes" ;
"Update Disk:NewData.fmp12" ;
"Work Disk:DataDB.fmp12" ) ]This will exchange the two files, even if the files are on 2 different volumes (disks).
Used in example file
FileManipulation.fmp12
Related functions
| TrFile_CopyFile |
| TrFile_DeleteFile |
| TrFile_MoveFile |
Related script steps
| Copy File |
| Delete file |
| Exchange Files |
| Move File |
Related topics
Troi File Plug-in online help (overview)
