Check if dir is empty - Revision history

83.97.31.111: /* The Function */

2010-11-09T17:49:22Z

The Function

â† Older revision		Revision as of 17:49, 9 November 2010
Line 43:		Line 43:
	_notempty:		_notempty:
	FindClose $0		FindClose $0
			ClearErrors
	Pop $1 # Stack: $0		Pop $1 # Stack: $0
	~~ClearErrors~~
	StrCpy $0 0		StrCpy $0 0
	Exch $0 # Stack: 0 (false)		Exch $0 # Stack: 0 (false)

83.97.31.111: /* The Function */

2010-11-09T17:48:30Z

The Function

â† Older revision		Revision as of 17:48, 9 November 2010
Line 44:		Line 44:
	FindClose $0		FindClose $0
	Pop $1 # Stack: $0		Pop $1 # Stack: $0
			ClearErrors
	StrCpy $0 0		StrCpy $0 0
	Exch $0 # Stack: 0 (false)		Exch $0 # Stack: 0 (false)

69.152.204.16: Fixed broken link.

2010-04-13T08:28:44Z

Fixed broken link.

â† Older revision		Revision as of 08:28, 13 April 2010
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	== Description ==		== Description ==
	Because "ifFileExists" uses the format "ifFileExists 'Directory\.'" to determine whether the -directory- exists or not, you can't use it to check whether the directory is empty or not.<br>		Because "ifFileExists" uses the format "ifFileExists 'Directory\.'" to determine whether the -directory- exists or not, you can't use it to check whether the directory is empty or not.<br>
	Here is a simple but useful function to check whether a directory is empty. Based largely on http://nsis.sourceforge.net~~/wiki~~/Delete_dir_only_if_empty .		Here is a simple but useful function to check whether a directory is empty. Based largely on http://nsis.sourceforge.net/Delete_dir_only_if_empty .

	== How To Use ==		== How To Use ==

89.58.48.68: /* Example */

2006-09-10T19:48:24Z

Example

â† Older revision		Revision as of 19:48, 10 September 2006
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	Call isEmptyDir		Call isEmptyDir
	Pop $0		Pop $0
	StrCmp $0 1 +2		StrCmp $0 1 0 +2
	MessageBox MB_OK "Directory is empty"		MessageBox MB_OK "Directory is empty"
	StrCmp $0 0 +2		StrCmp $0 0 0 +2
	MessageBox MB_OK "Directory is NOT empty"		MessageBox MB_OK "Directory is NOT empty"
	</highlight-nsis>		</highlight-nsis>

83.84.34.130 at 03:23, 27 October 2005

2005-10-27T03:23:04Z

New page

{{PageAuthor|camillo}}

== Description ==
Because "ifFileExists" uses the format "ifFileExists 'Directory\*.*'" to determine whether the -directory- exists or not, you can't use it to check whether the directory is empty or not.<br>
Here is a simple but useful function to check whether a directory is empty. Based largely on http://nsis.sourceforge.net/wiki/Delete_dir_only_if_empty .

== How To Use ==
<highlight-nsis>
Push <directory>
Call isEmptyDir
Pop <result>
</highlight-nsis>

== Example ==
<highlight-nsis>
Push "c:\somedir\"
Call isEmptyDir
Pop $0
StrCmp $0 1 +2
MessageBox MB_OK "Directory is empty"
StrCmp $0 0 +2
MessageBox MB_OK "Directory is NOT empty"
</highlight-nsis>

== The Function ==
<highlight-nsis>
Function isEmptyDir
# Stack -> # Stack: <directory>
Exch $0 # Stack: $0
Push $1 # Stack: $1, $0
FindFirst $0 $1 "$0\*.*"
strcmp $1 "." 0 _notempty
FindNext $0 $1
strcmp $1 ".." 0 _notempty
ClearErrors
FindNext $0 $1
IfErrors 0 _notempty
FindClose $0
Pop $1 # Stack: $0
StrCpy $0 1
Exch $0 # Stack: 1 (true)
goto _end
_notempty:
FindClose $0
Pop $1 # Stack: $0
StrCpy $0 0
Exch $0 # Stack: 0 (false)
_end:
FunctionEnd
</highlight-nsis>

[[Category:Disk, Path & File Functions]]