How to compare two files in NSIS?

ilaiyaraja · 28th March 2013, 04:42

I have created exe file using nsis.Installer working both ways silent and non-silent mode.If the user run second time i will take backup old property values and compare new property values.If mismatches i will write old property value into new property.
In the following code compare two and copy into temp file mismatched values.
Function compare
StrCpy $R0 "$INSTDIR\old.properties"
StrCpy $R1 "$INSTDIR\new.properties"

GetTempFileName $R2
FileOpen $R3 $R2 w
${TextCompare} "$R0" "$R1" "FastDiff" "Example2"
IfErrors 0 +2
MessageBox MB_OK "Error" IDOK +2

Exec "notepad.exe $R2"
FunctionEnd

Function Example2
FileWrite $R3 '$9'
Push $0
FunctionEnd

Problem:
In the temp File[$R3] have mismatched values.I want to replace mismatched values into new property.
How to achieve this?.

Afrow UK · 28th March 2013, 11:58

What is the format of your property files? Can you use ConfigRead/ConfigWrite?

Stu

ilaiyaraja · 28th March 2013, 12:32

I dont understand what is the format of your property file?.In my code i have put .properties.

Also how to use config read in this file comparison?

Problem:
compare two property files named old and new.if any string value mismatches that value should be replaced in new property.

MSG · 28th March 2013, 13:58

Please upload an example property file to pastebin.com .

ilaiyaraja · 1st April 2013, 11:07

#DEFAULT - PATH
DIRECTORY=C:/programfile/myproject
INDEXFILE=C:/programfile/myproject/index.xml
Temp INDEXFILE=C:/programfile/myprojec/temp.xml
DAYS=3
.........
........

In the above are sample values in property file.Also i have put in pastebin.com.

Afrow UK · 1st April 2013, 13:31

Use ConfigRead/ConfigWrite. It's in the NSIS manual.

Stu

ilaiyaraja · 1st April 2013, 14:01

thanks.I have used configwrite for writing mismatched values.but it will raised another problem.

If i use ${ConfigWrite} it will enter

${ConfigWrite} "$INSTDIR\conf.properties" "$R0" " $R1" $R3

$R0 -variable
$R1-value
After writing property file it will add new line every written.e.g

#DEFAULT - PATH
DIRECTORY=C:/programfile/myproject

INDEXFILE=C:/programfile/myproject/index.xml

Temp INDEXFILE=C:/programfile/myprojec/temp.xml

DAYS=3

I dont know why this new line added for every writing.How erase this new line ?

Afrow UK · 1st April 2013, 18:46

ConfigRead may not trim new-line characters. Use TrimNewLines on the value before writing it.

Stu

ilaiyaraja · 2nd April 2013, 07:20

yes.I have tried same function.but i have used after written.Now its working.Thanks.

28th March 2013, 04:42	#1
ilaiyaraja Member Join Date: Sep 2012 Posts: 81	How to compare two files in NSIS? I have created exe file using nsis.Installer working both ways silent and non-silent mode.If the user run second time i will take backup old property values and compare new property values.If mismatches i will write old property value into new property. In the following code compare two and copy into temp file mismatched values. Function compare StrCpy $R0 "$INSTDIR\old.properties" StrCpy $R1 "$INSTDIR\new.properties" GetTempFileName $R2 FileOpen $R3 $R2 w ${TextCompare} "$R0" "$R1" "FastDiff" "Example2" IfErrors 0 +2 MessageBox MB_OK "Error" IDOK +2 Exec "notepad.exe $R2" FunctionEnd Function Example2 FileWrite $R3 '$9' Push $0 FunctionEnd Problem: In the temp File[$R3] have mismatched values.I want to replace mismatched values into new property. How to achieve this?.

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28th March 2013, 11:58	#2
Afrow UK Moderator Join Date: Nov 2002 Location: Surrey, England Posts: 8,434	What is the format of your property files? Can you use ConfigRead/ConfigWrite? Stu

28th March 2013, 12:32	#3
ilaiyaraja Member Join Date: Sep 2012 Posts: 81	I dont understand what is the format of your property file?.In my code i have put .properties. Also how to use config read in this file comparison? Problem: compare two property files named old and new.if any string value mismatches that value should be replaced in new property.

28th March 2013, 13:58	#4
MSG Major Dude Join Date: Oct 2006 Posts: 1,892	Please upload an example property file to pastebin.com .

1st April 2013, 11:07	#5
ilaiyaraja Member Join Date: Sep 2012 Posts: 81	#DEFAULT - PATH DIRECTORY=C:/programfile/myproject INDEXFILE=C:/programfile/myproject/index.xml Temp INDEXFILE=C:/programfile/myprojec/temp.xml DAYS=3 ......... ........ In the above are sample values in property file.Also i have put in pastebin.com.

1st April 2013, 13:31	#6
Afrow UK Moderator Join Date: Nov 2002 Location: Surrey, England Posts: 8,434	Use ConfigRead/ConfigWrite. It's in the NSIS manual. Stu

1st April 2013, 14:01	#7
ilaiyaraja Member Join Date: Sep 2012 Posts: 81	thanks.I have used configwrite for writing mismatched values.but it will raised another problem. If i use ${ConfigWrite} it will enter ${ConfigWrite} "$INSTDIR\conf.properties" "$R0" " $R1" $R3 $R0 -variable $R1-value After writing property file it will add new line every written.e.g #DEFAULT - PATH DIRECTORY=C:/programfile/myproject INDEXFILE=C:/programfile/myproject/index.xml Temp INDEXFILE=C:/programfile/myprojec/temp.xml DAYS=3 I dont know why this new line added for every writing.How erase this new line ?

1st April 2013, 18:46	#8
Afrow UK Moderator Join Date: Nov 2002 Location: Surrey, England Posts: 8,434	ConfigRead may not trim new-line characters. Use TrimNewLines on the value before writing it. Stu

2nd April 2013, 07:20	#9
ilaiyaraja Member Join Date: Sep 2012 Posts: 81	yes.I have tried same function.but i have used after written.Now its working.Thanks.