First commit. It's working!
Page custom SiteConfigCreate SiteConfigLeave " - Configure site information"
Function SiteConfigCreate
!insertmacro XPUI_INSTALLOPTIONS_EXTRACT_AS "pages\SiteConfig.ini" "SiteConfig.ini"
!insertmacro XPUI_HEADER_TEXT "Configure website" "Enter basic information about your website."
!insertmacro XPUI_INSTALLOPTIONS_DISPLAY "SiteConfig.ini"
FunctionEnd
Function SiteConfigLeave
StrCmp $XPUI_ABORTED 1 0 +2
Return
ReadINIStr $site_name "$PLUGINSDIR\SiteConfig.ini" "Field 1" "State"
StrCmp $site_name "" 0 +3
MessageBox MB_OK|MB_ICONEXCLAMATION "Please enter a name for your site."
Abort
ReadINIStr $site_desc "$PLUGINSDIR\SiteConfig.ini" "Field 2" "State"
StrCmp $site_desc "" 0 +3
MessageBox MB_OK|MB_ICONEXCLAMATION "Please enter a description for your site."
Abort
ReadINIStr $site_copyright "$PLUGINSDIR\SiteConfig.ini" "Field 3" "State"
StrCmp $site_copyright "" 0 +2
StrCpy $site_copyright "No copyright assigned."
Push $site_copyright
Call CleanCopyright
Pop $site_copyright
StrCpy $url_scheme "standard"
ReadINIStr $0 "$PLUGINSDIR\SiteConfig.ini" "Field 4" "State"
IntCmp $0 1 0 +2 +2
StrCpy $url_scheme "short"
StrCpy $start_with "blank"
ReadINIStr $0 "$PLUGINSDIR\SiteConfig.ini" "Field 6" "State"
IntCmp $0 1 0 +2 +2
StrCpy $start_with "tutorial"
FunctionEnd
Function CleanCopyright
Pop $0
${str_replace} $0 "©" "©" "$0"
Push $0
FunctionEnd