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Cut a substring from a string by start and end strings

6 posts

Yurik#

Cut a substring from a string by start and end strings

I need a function which do the following job:

1. Searches for a substring in string
2. If the search is OK, deletes all symbols starting from position found in '1' till the second substring given.

Example. I have an xml-file:
<root-tag>
<some-tag1>
</some-tag1>
<!--comment-->
<some-tag1/>
</root-tag>

I want to delete all from "<!--comment-->" till "/>".

Will be obliged for your advices how to do that.
vbgunz#
Hello Yurik,

I hope this helps. Check out Afrow UKs page at the archives. It's filled with gems. http://nsis.sourceforge.net/archive/....php?userid=87

On the page are two functions which should probably help you get started.




Good luck!
Instructor#
Name "Output"

OutFile "Output.exe"



!include "TextFunc.nsh"

!insertmacro LineFind

!insertmacro TrimNewLines



Section

	${LineFind} "C:\input.txt" "C:\output.txt" "1:-1" "LineFindCallback"



	IfErrors 0 +2

	MessageBox MB_OK "Error"

SectionEnd



Function LineFindCallback

	${TrimNewLines} '$R9' $R9



	StrCmp $R0 start finish

	StrCmp $R9 '<!--comment-->' 0 end

	StrCpy $R0 start

	goto skip



	finish:

	StrCpy $1 $R9 '' -2

	StrCmp $1 '/>' 0 skip

	StrCpy $R0 finish



	skip:

	StrCpy $0 SkipWrite



	end:

	StrCpy $R9 '$R9$\r$\n'



	Push $0

FunctionEnd
Script use header
Instructor#
This script for your example. If you have other lines, then that is required more code. Lines like this:
<!--comment--><some-tag2><some-tag2/>