StrCase: Difference between revisions
From NSIS Wiki
Jump to navigationJump to search
m (Corrected link to System plug-in.) |
No edit summary |
||
Line 3: | Line 3: | ||
== Description == | == Description == | ||
'''Requires:''' [[LogicLib]] and [[System plug-in]]. | '''Requires:''' [[LogicLib header file]] and [[System plug-in]]. | ||
'''Version:''' 2.0.1. | '''Version:''' 2.0.1. |
Revision as of 06:17, 3 December 2005
Author: deguix (talk, contrib) |
Description
Requires: LogicLib header file and System plug-in.
Version: 2.0.1.
This function converts a string to a specified case.
How To Use
Syntax
${StrCase} "ResultVar" "String" "Case"
or
Push "String" Push "Case" Call StrLoc Pop "ResultVar"
Parameters
- ResultVar
- Variable where the transformed String by the Case parameter is returned.
- String
- String to transform into Case case.
- Case
- Case type to transform String. The following are supported:
- empty value
- Original Case (same as String).
- L
- Lower Case.
- U
- Upper Case.
- T
- Title Case.
- S
- Sentence Case.
- <>
- Switch Case.
Example
${StrCase} $0 "This is just an example" "T" ;$0 = "This Is Just An Example"
Function Code
!define StrCase "!insertmacro StrCase" !macro StrCase ResultVar String Case Push "${String}" Push "${Case}" Call StrCase Pop "${ResultVar}" !macroend Function StrCase /*After this point: ------------------------------------------ $0 = String (input) $1 = Case (input) $2 = StrLength (temp) $3 = StartChar (temp) $4 = EndChar (temp) $5 = ResultStr (temp) $6 = CurrentChar (temp) $7 = LastChar (temp) $8 = Temp (temp)*/ ;Get input from user Exch $1 Exch Exch $0 Exch Push $2 Push $3 Push $4 Push $5 Push $6 Push $7 Push $8 ;Initialize variables StrCpy $2 "" StrCpy $3 "" StrCpy $4 "" StrCpy $5 "" StrCpy $6 "" StrCpy $7 "" StrCpy $8 "" ;Upper and lower cases are simple to use ${If} $1 == "U" ;Upper Case: ;----------- ;Convert all characters to upper case. System::Call "User32::CharUpper(t r0 r5)i" Goto StrCase_End ${ElseIf} $1 == "L" ;Lower Case: ;----------- ;Convert all characters to lower case. System::Call "User32::CharLower(t r0 r5)i" Goto StrCase_End ${EndIf} ;For the rest of cases: ;Get "String" length StrLen $2 $0 ;Make a loop until the end of "String" ${For} $3 0 $2 ;Add 1 to "EndChar" counter also IntOp $4 $3 + 1 # Step 1: Detect one character at a time ;Remove characters before "StartChar" except when ;"StartChar" is the first character of "String" ${If} $3 <> 0 StrCpy $6 $0 `` $3 ${EndIf} ;Remove characters after "EndChar" except when ;"EndChar" is the last character of "String" ${If} $4 <> $2 ${If} $3 = 0 StrCpy $6 $0 1 ${Else} StrCpy $6 $6 1 ${EndIf} ${EndIf} # Step 2: Convert to the advanced case user chose: ${If} $1 == "T" ;Title Case: ;------------------ ; Convert all characters after a non-alphabetic character to upper case. ; Else convert to lower case. ;Use "IsCharAlpha" for the job System::Call "*(&t1 r7) i .r8" System::Call "*$8(&i1 .r7)" System::Free $8 System::Call "user32::IsCharAlpha(i r7) i .r8" ;Verify "IsCharAlpha" result and convert the character ${If} $8 = 0 System::Call "User32::CharUpper(t r6 r6)i" ${Else} System::Call "User32::CharLower(t r6 r6)i" ${EndIf} ${ElseIf} $1 == "S" ;Sentence Case: ;------------------ ; Convert all characters after a ".", "!" or "?" character to upper case. ; Else convert to lower case. Spaces or tabs after these marks are ignored. ;Detect current characters and ignore if necessary ${If} $6 == " " ${OrIf} $6 == "$\t" Goto IgnoreLetter ${EndIf} ;Detect last characters and convert ${If} $7 == "." ${OrIf} $7 == "!" ${OrIf} $7 == "?" ${OrIf} $7 == "" System::Call "User32::CharUpper(t r6 r6)i" ${Else} System::Call "User32::CharLower(t r6 r6)i" ${EndIf} ${ElseIf} $1 == "<>" ;Switch Case: ;------------------ ; Switch all characters cases to their inverse case. ;Use "IsCharUpper" for the job System::Call "*(&t1 r6) i .r8" System::Call "*$8(&i1 .r7)" System::Free $8 System::Call "user32::IsCharUpper(i r7) i .r8" ;Verify "IsCharUpper" result and convert the character ${If} $8 = 0 System::Call "User32::CharUpper(t r6 r6)i" ${Else} System::Call "User32::CharLower(t r6 r6)i" ${EndIf} ${EndIf} ;Write the character to "LastChar" StrCpy $7 $6 IgnoreLetter: ;Add this character to "ResultStr" StrCpy $5 `$5$6` ${Next} StrCase_End: /*After this point: ------------------------------------------ $0 = ResultVar (output)*/ ; Copy "ResultStr" to "ResultVar" StrCpy $0 $5 ;Return output to user Pop $8 Pop $7 Pop $6 Pop $5 Pop $4 Pop $3 Pop $2 Pop $1 Exch $0 FunctionEnd
Versions History
- 2.0.1
- Fixed stack problems.
Credits
Author: Diego Pedroso (deguix)
Based on StrLower and StrUpper functions.