Afrow UK
29th March 2003 20:18 UTC

New Function
Usage:
Push "My name is Afrow UK, and I love NSIS"
Push "4"
Call GetStringPart
Pop "$R0"
$R0 should now be "My name is Afrow UK," but it's not working.
I definatly had this script working before, and now it does not work at all.

Function GetStringPart
  Pop $R4
  Exch $R0
  Push $R1
  Push $R2
  Push $R3
  StrCpy $R1 -1
  StrCpy $R3 0
  loop:
    StrCpy $R2 $R0 1 $R1
    StrCmp $R3 $R4 exit2
    StrCmp $R2 "" exit2
    StrCmp $R2 " " exit ; Change " " to "\" if ur inputting dir path str
    IntOp $R1 $R1 - 1
  Goto loop
  exit:
    StrCpy $R0 $R0 $R1
    IntOp $R3 $R3 + 1
    Goto loop
  exit2:
    Pop $R3
    Pop $R2
    Pop $R1
    Exch $R0
FunctionEnd

Basically, it will clear the string from the start up to the space specified.
Thats where the Push "4" comes in. It should reomve all of the string from the end up to the 4th space.

Can anyone see whats wrong with it?

-Stuart

Afrow UK
29th March 2003 22:00 UTC

I completely re-wrote the script, and got a far better script than from before.
Instead, it just gets the fisrt part of a string before the first space (or character of your choice)

Usage:
Push "My name is Afrow UK, and I love NSIS"
Call GetFirstStrPart
Pop $R0

$R0 is now "My"

Function GetFirstStrPart
  Exch $R0
  Push $R1
  Push $R2
  Push $R3
  StrLen $R3 $R0
  IntOp $R3 $R3 + 1
  loop:
    IntOp $R3 $R3 - 1
    StrCpy $R2 $R0 1 -$R3
    DetailPrint $R2
    StrCmp $R2 "" exit
    StrCmp $R2 " " exit ; Change " " to "\" if ur inputting dir path str
  Goto loop
  exit:
    StrCpy $R0 $R0 -$R3
    IntOp $R1 $R1 + 1
    Pop $R3
    Pop $R2
    Pop $R1
    Exch $R0
FunctionEnd

-Stuart

deguix
29th March 2003 22:08 UTC

But for what you want this? Because already have the function "Advanced Search in String". Seach for " " in "My name is Afrow UK, and I love NSIS", use the option to show the str before the " ", and the option to not show the " ", the result will be the same (My).

[EDIT]And you can get any part of the str with the loops option:

Example: 0 loops will return "My"
1 loop will return "My name"
2 loops will return "My name is"
3 loops will return "My name is Afrow"
...

deguix
29th March 2003 22:50 UTC

I have a suggestion for you, how about the user push the caracter or str to be searched? (like StrStr)

Afrow UK
29th March 2003 23:42 UTC

The reason I'm not going to use Advanced Str Search, is because my program reads from a 500kb log file and searches each line one by one, using StrStr to search through that line, then this script then GetFileName and so on. It already takes a very long time to parse the whole log.

Using Advanced Str Search would increase the time noticibly, where it has to be called over 1000 times!

-Stuart

deguix
30th March 2003 11:36 UTC

But you will use your GetFirstStrPart for every line of the log file?