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Introduced with Armed Assault version 1.00

Click on the images for descriptions

Introduced in

Armed Assault


Returns the preprocessed content of the given file. The preprocessor is C-like, it supports comments using /* */ and PreProcessor_Commands. The preprocessor also adds a default debug entrypoint for compiler at the begining of script: #line 1 "aFilename"

The #line keyword can be used in any script that are not preprocess, or with preprocess script with extra macro to protect reserverd sharp character. The format is:
#line <number> "<name>"
followed by new line. <number> could be only positive integer and <name> could be any name. This will be used only if an error occurs in the script. The error will contain the line: File <filename>, line <linenumber>
where <filename> will be the <name> you set and <linenumber> will be <number> + how many lines it is from the #line line. If the error happened on the line right under #line it will add 0 to <number>, if on second line, it will add 1 etc.

It is possible to use more than one #line keywords, but it seems having just one at the top for little script is enough to pinpoint position of the error easily.


preprocessFileLineNumbers fileName
fileName: String - path to the file
Return Value:
String - file content containing #line 1 "aFilename"


Example 1:
_string = preprocessFileLineNumbers "A3\ui_f\scripts\IGUI\RscUnitInfo.sqf" Result is:
#line 1 "A3\ui_f\scripts\IGUI\RscUnitInfo.sqf"

Additional Information

See also:
preprocessFileloadFileFunctionSQF syntaxcallspawnexecVMPreProcessor Commands


Only post proven facts here. Report bugs on the feedback tracker. Use the talk page or the forums for discussions.
Add New Note | How To


Posted on December 17, 2013
The main difference between preprocessFile and preprocessFileLineNumbers is that the latter adds #line keyword to the target file, which allows to log the __LINE__ error happened at and the __FILE__ error happened in. PreprocessFile.jpg

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Posted on November 4, 2017 - 10:16 (UTC)
The #line directive get's removed from the output.
So to add a custom #line directive before while using preprocessFileLineNumbers, you have to use a preprocessor macro like this:
#define DEBUG(sharp,name) sharp##line 0 name
and add this at the right place in your code
DEBUG(#,"your filename"); This way you can have custom filenames in error messages.