Check for spaces in a directory path: Difference between revisions
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== Usage == | == Usage == | ||
The function should be called in the Leave function of the Directory page. Below are the two ways to implement this (through Classic UI and Modern UI). Both implement a function called "DirectoryLeave" as the Directory pages' Leave function. | The CheckForSpaces function should be called in the Leave function of the Directory page. Below are the two ways to implement this (through Classic UI and Modern UI). Both implement a function called "DirectoryLeave" as the Directory pages' Leave function. | ||
=== Non-MUI === | === Non-MUI === |
Revision as of 18:09, 15 January 2006
Author: Afrow UK (talk, contrib) |
Description
This script will check a string (or directory path) for spaces and returns the number of spaces found in the string.
Updated 12th January 2005
Usage
The CheckForSpaces function should be called in the Leave function of the Directory page. Below are the two ways to implement this (through Classic UI and Modern UI). Both implement a function called "DirectoryLeave" as the Directory pages' Leave function.
Non-MUI
Page Directory "" "" "DirectoryLeave"
MUI
!define MUI_PAGE_CUSTOMFUNCTION_LEAVE "DirectoryLeave" !insertmacro MUI_PAGE_DIRECTORY
DirectoryLeave Function
This gives an example of what your "DirectoryLeave" function should look like.
Function DirectoryLeave # Call the CheckForSpaces function. Push $INSTDIR # Input string (install path). Call CheckForSpaces Pop $R0 # The function returns the number of spaces found in the input string. # Check if any spaces exist in $INSTDIR. StrCmp $R0 0 NoSpaces # Plural if more than 1 space in $INSTDIR. StrCmp $R0 1 0 +3 StrCpy $R1 "" Goto +2 StrCpy $R1 "s" # Show message box then take the user back to the Directory page. MessageBox MB_OK|MB_ICONEXCLAMATION "Error: The Installaton directory \ has $R0 space$R1.$\nPlease remove the space$R1." Abort NoSpaces: FunctionEnd
The Function
Function CheckForSpaces Exch $R0 Push $R1 Push $R2 Push $R3 StrCpy $R1 -1 StrCpy $R3 $R0 StrCpy $R0 0 loop: StrCpy $R2 $R3 1 $R1 IntOp $R1 $R1 - 1 StrCmp $R2 "" done StrCmp $R2 " " 0 loop IntOp $R0 $R0 + 1 Goto loop done: Pop $R3 Pop $R2 Pop $R1 Exch $R0 FunctionEnd
-Stu