LCL? - Working with files and directory's

[djongepier]

Hello all,

I'm having some trouble finding the procedures related to file handling.
These are the things I want to do:
- Check if file/directory exists
- Find exe's in the PATH variable
- Read from environment variables

For context, I have some experience with Python's pathlib, this might color my expectations.

Lot's of things are kind of new and I am not really familiar yet with the style of naming I guess.

[Handoko]

These should be what you need:

https://www.freepascal.org/docs-html/rtl/sysutils/fileexists.html
https://www.freepascal.org/docs-html/rtl/sysutils/getenvironmentvariable.html

Lot's of things are kind of new and I am not really familiar yet with the style of naming I guess.

Just ask, people here are very nice and helpful.
If you're new in Lazarus or programming in general, you can download, try and study these demos:

https://wiki.freepascal.org/Portal:HowTo_Demos

[Fibonacci]

- Find exe's in the PATH variable

Code: Pascal  [Select][+][-]

1. uses SysUtils;
2.  
3. function where(file_: unicodestring): unicodestring;
4. var
5.   u: unicodestring;
6. begin
7.   result := '';
8.   for u in unicodestring(GetEnvironmentVariable('PATH')).Split([';']) do
9.     if FileExists(IncludeTrailingBackslash(u)+file_) then
10.       exit(IncludeTrailingBackslash(u)+file_);
11. end;
12.  
13. begin
14.   writeln(where('fpc.exe'));
15.   writeln(where('calc.exe'));
16.   readln;
17. end.

[Nimbus]

There's ExeSearch in SysUtils
https://www.freepascal.org/docs-html/rtl/sysutils/exesearch.html

[Fibonacci]

There's ExeSearch in SysUtils
https://www.freepascal.org/docs-html/rtl/sysutils/exesearch.html

I knew it I was looking for "find" word

[Thaddy]

Code: Pascal  [Select][+][-]

1. {$macro on}{$define FindExecutables:= ExeSearch}

Will help to find it..

[djongepier]

There's ExeSearch in SysUtils
https://www.freepascal.org/docs-html/rtl/sysutils/exesearch.html

That's what I need, although, I use the SysUtils unit, but the identifier is not found. Which leads me to believe it's in some other unit?

[djongepier]

Nevermind, got it!

Somehow my brain had a fart and added the C in ExeSearch, like so 'ExecSearch' which does not work.

Look at the screenshot.