Split strings: Difference between revisions
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StrCmp $R2 '"' 0 findEnd_loop_${PART} | StrCmp $R2 '"' 0 findEnd_loop_${PART} | ||
; R0 = indice di fine della sottostringa di interesse | ; R0 = indice di fine della sottostringa di interesse | ||
; R0 = the index ending the substring | ; R0 = the index ending the substring | ||
IntOp $R0 $R0 - $R1 | IntOp $R0 $R0 - $R1 |
Revision as of 14:12, 19 December 2007
Author: Lyra IT (talk, contrib) |
Description
This script (macro) is an improved version of SPLIT_STRING macro Save_on_variables. It will allow you to split up a string into separate sub-strings for use. Differently from SPLIT_STRING, it works with more than 2 sub-strings. It can be useful to get single parameters from a command line. The format of the string is:
"string1" "string2"..."stringN"
The macro will then split it up to use one piece of the string (e.g. stringN)
Usage
!insertmacro GET_STRING_TOKEN $0 2 ;$0 = input string, 2 = get 2nd sub-string Pop $1
Usage Example
; in $0 is stored the string StrCpy $1 0 top: IntOp $1 $1 + 1 !insertmacro GET_STRING_TOKEN $0 $1 Pop $2 StrCmp $2 "error" go_ahead 0 MessageBox MB_OK $2 Goto top go_ahead:
The Macro
!macro GET_STRING_TOKEN INPUT PART Push $R0 Push $R1 Push $R2 ; R0 = indice di scorrimento stringa ; R0 = index of current position in the string StrCpy $R0 -1 ; R1 = indice del carattere " da trovare ; R1 = index of '"' character to be found IntOp $R1 ${PART} * 2 IntOp $R1 $R1 - 1 ; cerco il " che indica l'inizio della sottostringa di interesse ; searching '"' character beginning the substring findStart_loop_${PART}: IntOp $R0 $R0 + 1 ; i++ StrCpy $R2 ${INPUT} 1 $R0 ; getting next character StrCmp $R2 "" error_${PART} StrCmp $R2 '"' 0 findStart_loop_${PART} IntOp $R1 $R1 - 1 IntCmp $R1 0 0 0 findStart_loop_${PART} ; salvo in R1 l'indice di inizio della sottostringa di interesse ; storing in R1 the index beginning the substring IntOp $R1 $R0 + 1 ; cerco il " successivo, che indica la fine della stringa di interesse ; searching '"' character ending the substring findEnd_loop_${PART}: IntOp $R0 $R0 + 1 ; i++ StrCpy $R2 ${INPUT} 1 $R0 ; getting next character StrCmp $R2 "" error_${PART} StrCmp $R2 '"' 0 findEnd_loop_${PART} ; R0 = indice di fine della sottostringa di interesse ; R0 = the index ending the substring IntOp $R0 $R0 - $R1 ; salvo in R0 la lunghezza della sottostringa di interesse ; storing in R0 the substring's length StrCpy $R0 ${INPUT} $R0 $R1 Goto done_${PART} error_${PART}: StrCpy $R0 error done_${PART}: Pop $R2 Pop $R1 Exch $R0 !macroend
May be helpful!
Note: You cannot use multiple !insertmacro SPLIT_STRING within the same function/section using the same part. Doing so will stop your script compiling. e.g.
Function ThisFunctionIsFine !insertmacro GET_STRING_TOKEN $0 1 !insertmacro GET_STRING_TOKEN $0 2 FunctionEnd Function ThisFunctionIs'''NOT'''Fine !insertmacro GET_STRING_TOKEN $0 1 !insertmacro GET_STRING_TOKEN $0 1 FunctionEnd
-Lyra