Exist...
You can use these tests to determine if a file, directory, script section, or variable does or does not exist. If this test is true, then a Command is executed. Based on the specific test selected, one or more additional arguments may be needed. Avaialable tests include:
| ExistFile | Not,ExistFile | Check to see if a file does/doesn't exist 1 |
| ExistDir | Not,ExistDir | Check to see if a directory does/doesn't exist 1 |
| ExistSection | Not,ExistSection | Check to see if a given section does/doesn't exist inside the specified file |
| ExistRegSection | Not,ExistRegSection | Check to see if a given section does/doesn't exist in the specified registry |
| ExistRegKey | Not,ExistRegKey | Check to see if a specific key does/doesn't exist inside the specified registry |
| ExistVar | Not,ExistVar | Check to see if a specific variable does/doesn't exist - i.e. has it been defined |
- Wildcards may only be used in the File and Directory existence checks. BUT, they may not give expected results. For example, checking to see if *.* exists will ALWAYS return TRUE because of the "dot" and "dot-dot" entries returned by the internal API used.
Syntax
If,EXISTFILE,TestFile,Command If,EXISTDIR,Directory,Command If,Not,EXISTSECTION,TestFile,Section,Command If,EXISTVAR,%Var%,Command
Example:
In the example below we are testing if c:\myFile.txt does not exist. If this condition is true, then FileCreateBlank,c:\myFile.txt will be executed
If,Not,ExistFile,c:\myFile.txt,FileCreateBlank,c:\myFile.txt
The following command will read the value of HKLM\SOFTWARE\Classes\xyz,Language, if RegSection HKLM\SOFTWARE\Classes\xyz does exist.
If,ExistRegSection,HKLM,SOFTWARE\Classes\xyz,RegRead,HKLM,SOFTWARE\Classes\xyz,Language,%var%
This command will read the value of HKLM\SOFTWARE\Classes\xyz,Language, but only if the registry key HKLM\SOFTWARE\Classes\xyz,Language exists.
If,ExistRegKey,HKLM,SOFTWARE\Classes\xyz,Language,RegRead,HKLM,SOFTWARE\Classes\xyz,Language,%var%
In this final example we will check if the program path C:\Program Files\IrfanView exists. If it does, then the value of %Var% will be set to 1. Then we will check to see if %Var% exists. If it is true (i.e. was created above or even earlier in the script or project) a message windows with the text "1 does exist" appears.
Set,%var%,NIL If,ExistDir,C:\Program Files\IrfanView,Set,%Var%,1 If,ExistVar,%var%,Message,"'%var%' does exist",Information