Free pascal copy file

I have only been able to find the Lazarus function included in FileUtils , CopyFile but as I'm not using Lazarus this solution doesn't work for me. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. FreePascal - How can I copy a file from one location and paste it in another? Asked 1 year, 1 month ago.

Active 1 year, 1 month ago. Viewed times. Add a comment. Active Oldest Votes. Doj Doj 1, 6 6 gold badges 11 11 silver badges 18 18 bronze badges. These files can be opened and edited inside the Lazarus IDE or any other text editor. For specific purposes you can create your own file type that can only store one type of data.

For example:. To enable or disable it:. This is a cardinal number type. Different numbers mean different errors. So you may want to check the documentation for the different errors [1].

These file handling procedures and functions are located in unit System. Now open the file in any text editor and you will see the above text written to it! You can test the error handling by running the program once, then set the file to read-only and run the program again. Note that exception handling was used as that is an easy way to perfom multiple file operations and handling the errors. In addition to the old style file handling routines mentioned above, a new system exists that uses the concept of streams - of data at a higher abstraction level.

This means data can be read from or written to any location disk, memory, hardware ports etc. A lot of other objects such as Lazarus grids have similar functionality, including Lazarus datasets DBExport.

For opening files for direct access TFileStream can be used. IO routines. Here is a very simple example of appending one file to another using streams.

It is equivalent to the append example above, but much simpler:. In the example below, note how we encapsulate the file handling action with a try.. You can load entire files into memory too if its size is comparatively smaller than available system memory.

With larger files of many Gb, you may want to read in buffers of, say, bytes you're advised to use a multiple of the filesytem cluster or block size and do something with the data of each buffer read. With the above, we can implement a simple FileCopy function FreePascal has none in its RTL although Lazarus has copyfile - adjust as needed for bigger files etc:. In general, for text files you can use the TStringList class to load the entire file into memory and have easy access to its lines.

Of course, you can also write the StringList back to a file:. In order to write a single string to a stream you might want to use the procedure defined below.

Note that strings in FreePascal can be extremely long, this is also a useful way to write a big block of textdata to a file. The first option to assign external to internal files in iso mode is through command line parameters according to their order of appearance. The program is compiled with fpc -Miso isotest1. Without command line parameters the files are assigned to stdin and stdout.