nsis中的複合字符串比較

Question

如何在NSIS中執行復合字符串比較？

基本上是這樣的：if (str1 == "" || str2 == "") ...

strcpy $1 "c:\foo" 
strcpy $2 "d:\bar" 

${if} strcmp $1 "" 
${orif} strcmp $2 "" 
    MessageBox MB_OK "one or both are empty" 
${else} 
    messagebox mb_ok "both are not" 
${endif} 
SectionEnd 

Answer 1

StrCmp是NSIS字符串比較的心臟低級指令，但使用LogicLib時，必須使用正確的運營商：==，!=，S==或S!=（所有這些都列在LogicLib.nsh的頂部，不區分大小寫的運算符在內部使用StrCmp）

!include LogicLib.nsh 
Section 
StrCpy $1 "c:\foo" 
StrCpy $2 "d:\bar" 

${If} $1 == "" 
${OrIf} $2 == "" 
    MessageBox MB_OK "one or both are empty" 
${Else} 
    MessageBox MB_OK "both are not" 
${EndIf} 
SectionEnd