Search For a File - Revision history

Kichik: instead of <clean>

2005-10-24T12:22:09Z

<clean> instead of <clean>

â† Older revision		Revision as of 12:22, 24 October 2005
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	# NSIS automatically removes the trailing backslash. Stack: $EXEDIR(original)		# NSIS automatically removes the trailing backslash. Stack: $EXEDIR(original)
	Exch $EXEDIR # restore original dir var. Stack: $0(without backslash)		Exch $EXEDIR # restore original dir var. Stack: $0(without backslash)
	Pop $0 # and pop the directory without the backslash. Stack: ~~<~~clean~~>~~</highlight-nsis>Forum user [user:banaman8d banaman8d] have written a variant of this script that lets the callback function do the comparison. Click [http://forums.winamp.com/attachment.php?s=&postid=975844 here] to get it.		Pop $0 # and pop the directory without the backslash. Stack: <clean></highlight-nsis>Forum user [user:banaman8d banaman8d] have written a variant of this script that lets the callback function do the comparison. Click [http://forums.winamp.com/attachment.php?s=&postid=975844 here] to get it.

	A simple macro is included to simplify the process of getting your callback function's address.		A simple macro is included to simplify the process of getting your callback function's address.

83.84.34.130: Made the trailing backslash-removal bit use only stack commands, added stack trace

2005-10-23T14:52:21Z

Made the trailing backslash-removal bit use only stack commands, added stack trace

â† Older revision		Revision as of 14:52, 23 October 2005
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	'''Warning:''' do not push a directory with a trailing backslash. To remove the trailing backslash automatically use (assuming the input is in $0):		'''Warning:''' do not push a directory with a trailing backslash. To remove the trailing backslash automatically use (assuming the input is in $0):

	<highlight-nsis>Push $0 # directory		<highlight-nsis>Push $0 # directory to remove trailing backslash from. Stack: $0(with backslash)
	Exch $EXEDIR		Exch $EXEDIR # exchange with a built-in dir var - exedir will do.
	~~StrCpy $0~~ $EXEDIR		# NSIS automatically removes the trailing backslash. Stack: $EXEDIR(original)
	Exch $EXEDIR</highlight-nsis>Forum user [user:banaman8d banaman8d] have written a variant of this script that lets the callback function do the comparison. Click [http://forums.winamp.com/attachment.php?s=&postid=975844 here] to get it.		Exch $EXEDIR # restore original dir var. Stack: $0(without backslash)
			Pop $0 # and pop the directory without the backslash. Stack: <clean></highlight-nsis>Forum user [user:banaman8d banaman8d] have written a variant of this script that lets the callback function do the comparison. Click [http://forums.winamp.com/attachment.php?s=&postid=975844 here] to get it.

	A simple macro is included to simplify the process of getting your callback function's address.		A simple macro is included to simplify the process of getting your callback function's address.

ConversionBot: Adding new author and category links.

2005-06-24T13:47:10Z

Adding new author and category links.

â† Older revision		Revision as of 13:47, 24 June 2005
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	{~~\|align=right~~		{{PageAuthor\|KiCHiK}}
	~~\|<small>Author: [[~~{~~{ns:2}}:KiCHiK~~\|KiCHiK~~]] ([[{{ns:3}}:KiCHiK\|talk]], [[{{ns:-1}~~}~~:Contributions/KiCHiK\|contrib]])</small>~~
	\|}
	~~<br style="clear:both;">~~
	== Description ==		== Description ==
	This function searches a given directory and all of its subdirectories for a certain file (or directory). Whenever it finds a match it calls a given callback function. If the callback function returns "stop" the function will stop searching.		This function searches a given directory and all of its subdirectories for a certain file (or directory). Whenever it finds a match it calls a given callback function. If the callback function returns "stop" the function will stop searching.
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	</highlight-nsis>		</highlight-nsis>

	[[~~{{ns:14}}~~:Disk, Path & File Functions]]		[[Category:Disk, Path & File Functions]]

ConversionBot: Added category links.

2005-04-30T21:01:34Z

Added category links.

â† Older revision		Revision as of 21:01, 30 April 2005
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	SectionEnd		SectionEnd
	</highlight-nsis>		</highlight-nsis>

			[[{{ns:14}}:Disk, Path & File Functions]]

ConversionBot: Updated author links.

2005-04-30T03:03:17Z

Updated author links.

@@ Line 1: / Line 1: @@
 == Description ==
 This function searches a given directory and all of its subdirectories for a certain file (or directory). Whenever it finds a match it calls a given callback function. If the callback function returns "stop" the function will stop searching.
@@ Line 195: / Line 199: @@
 SectionEnd
 </highlight-nsis>

ConversionBot: Updated author and download links, and changed format of some pages.

2005-04-23T12:34:34Z

Updated author and download links, and changed format of some pages.

â† Older revision		Revision as of 12:34, 23 April 2005
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	</highlight-nsis>		</highlight-nsis>

	Page author: KiCHiK		Page author: [[User:KiCHiK\|KiCHiK]]

ConversionBot: Wikipedia python library

2005-04-09T19:26:41Z

Wikipedia python library

New page

== Description ==
This function searches a given directory and all of its subdirectories for a certain file (or directory). Whenever it finds a match it calls a given callback function. If the callback function returns "stop" the function will stop searching.

The function gets a directory to search, a file/directory name and an address to a callback function (use GetFunctionAddress) through the stack.

This function is based on a [http://forums.winamp.com/showthread.php?s=&threadid=65535&highlight=findfirst code] originally written by Justin Frankel.

'''Warning:''' do not push a directory with a trailing backslash. To remove the trailing backslash automatically use (assuming the input is in $0):

<highlight-nsis>Push $0 # directory
Exch $EXEDIR
StrCpy $0 $EXEDIR
Exch $EXEDIR</highlight-nsis>Forum user [user:banaman8d banaman8d] have written a variant of this script that lets the callback function do the comparison. Click [http://forums.winamp.com/attachment.php?s=&postid=975844 here] to get it.

A simple macro is included to simplify the process of getting your callback function's address.

<highlight-nsis>!macro CallFindFiles DIR FILE CBFUNC
Push "${DIR}"
Push "${FILE}"
Push $0
GetFunctionAddress $0 "${CBFUNC}"
Exch $0
Call FindFiles
!macroend</highlight-nsis>

== Callback Function Syntax ==

*Do not use $R0-$R6 in the function unless you are saving their old content*Return a "stop" value if you want to stop searching, anything else to continue
*Always return a value through the stack (Push) to prevent stack corruption*Do not push values on the stack without poping them later unless it's the return value

== Example of Callback Function ==

<highlight-nsis>Function MyCallbackFunction
Exch $0
DetailPrint $0
Pop $0
Push "stop"
FunctionEnd
</highlight-nsis>

== The Function Code ==
<highlight-nsis>Function FindFiles
Exch $R5 # callback function
Exch
Exch $R4 # file name
Exch 2
Exch $R0 # directory
Push $R1
Push $R2
Push $R3
Push $R6

Push $R0 # first dir to search

StrCpy $R3 1

nextDir:
Pop $R0
IntOp $R3 $R3 - 1
ClearErrors
FindFirst $R1 $R2 "$R0\*.*"
nextFile:
StrCmp $R2 "." gotoNextFile
StrCmp $R2 ".." gotoNextFile

StrCmp $R2 $R4 0 isDir
Push "$R0\$R2"
Call $R5
Pop $R6
StrCmp $R6 "stop" 0 isDir
loop:
StrCmp $R3 0 done
Pop $R0
IntOp $R3 $R3 - 1
Goto loop

isDir:
IfFileExists "$R0\$R2\*.*" 0 gotoNextFile
IntOp $R3 $R3 + 1
Push "$R0\$R2"

gotoNextFile:
FindNext $R1 $R2
IfErrors 0 nextFile

done:
FindClose $R1
StrCmp $R3 0 0 nextDir

Pop $R6
Pop $R3
Pop $R2
Pop $R1
Pop $R0
Pop $R5
Pop $R4
FunctionEnd</highlight-nsis>

== A Complete Example ==
This example will look for Winamp.exe versioned 2.9+ all over the C: drive.

<highlight-nsis>
Name "FindFiles example"
OutFile FindFiles.exe

ShowInstDetails show

Function FindFiles
Exch $R5 # callback function
Exch
Exch $R4 # file name
Exch 2
Exch $R0 # directory
Push $R1
Push $R2
Push $R3
Push $R6

Push $R0 # first dir to search

StrCpy $R3 1

nextDir:
Pop $R0
IntOp $R3 $R3 - 1
ClearErrors
FindFirst $R1 $R2 "$R0\*.*"
nextFile:
StrCmp $R2 "." gotoNextFile
StrCmp $R2 ".." gotoNextFile

StrCmp $R2 $R4 0 isDir
Push "$R0\$R2"
Call $R5
Pop $R6
StrCmp $R6 "stop" 0 isDir
loop:
StrCmp $R3 0 done
Pop $R0
IntOp $R3 $R3 - 1
Goto loop

isDir:
IfFileExists "$R0\$R2\*.*" 0 gotoNextFile
IntOp $R3 $R3 + 1
Push "$R0\$R2"

gotoNextFile:
FindNext $R1 $R2
IfErrors 0 nextFile

done:
FindClose $R1
StrCmp $R3 0 0 nextDir

Pop $R6
Pop $R3
Pop $R2
Pop $R1
Pop $R0
Pop $R5
Pop $R4
FunctionEnd

!macro CallFindFiles DIR FILE CBFUNC
Push "${DIR}"
Push "${FILE}"
Push $0
GetFunctionAddress $0 "${CBFUNC}"
Exch $0
Call FindFiles
!macroend

Function FindWinamp29
Pop $0
GetDLLVersion $0 $1 $3
IntOp $2 $1 & 0x0000FFFF
IntOp $1 $1 / 0x00010000
IntOp $4 $3 & 0x0000FFFF
IntOp $3 $3 / 0x00010000
DetailPrint "$1.$2.$3.$4 - $0"
StrCmp "$1.$2" "2.9" 0 not
StrCpy $9 $0
DetailPrint "This is the one! Stopping search..."
Push "stop"
Return
not:
Push "go"
FunctionEnd

Section "Find Winamp"
!insertmacro CallFindFiles C: winamp.exe FindWinamp29
StrCmp $9 "" 0 +2
DetailPrint "Couldn't find Winamp 2.9+"
SectionEnd
</highlight-nsis>

Page author: KiCHiK