FileOpen2: Difference between revisions
From NSIS Wiki
Jump to navigationJump to search
m (moved FileOpenEx to FileOpen2: Changing the name of the function, looked too advanced. Reminds me of the method of the same name from ms ( http://msdn.microsoft.com/en-us/library/ff867007.aspx )) |
mNo edit summary |
||
| Line 6: | Line 6: | ||
== Example == | == Example == | ||
<highlight-nsis>;; Open file with RW access, ReadOnly sharing, and if it does not exists, Creates it. $1 gets the file handle. | <highlight-nsis>;; Open file with RW access, ReadOnly sharing, and if it does not exists, Creates it. $1 gets the file handle. | ||
${ | ${FileOpen2} $1 "$SomeFile" "rw" "r" "c"</highlight-nsis> | ||
== Function == | == Function == | ||
<highlight-nsis>;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | <highlight-nsis>;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | ||
| Line 26: | Line 26: | ||
;; 'o' : Create and Overwrite | ;; 'o' : Create and Overwrite | ||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | ||
!define | !define FileOpen2 "!insertmacro _FileOpen2" | ||
!macro | !macro _FileOpen2 _Handle_ _File_ _Access_ _Share_ _Create_ | ||
Push "${_Create_}" | Push "${_Create_}" | ||
Push "${_Share_}" | Push "${_Share_}" | ||
Push "${_Access_}" | Push "${_Access_}" | ||
Push "${_File_}" | Push "${_File_}" | ||
Call | Call FileOpen2 | ||
Pop ${_Handle_} | Pop ${_Handle_} | ||
!macroend | !macroend | ||
Function | Function FileOpen2 ;; $0:File, $1:Access, $2:Share, $3:Create | ||
Exch $0 | Exch $0 | ||
Exch | Exch | ||
Revision as of 03:43, 22 October 2011
| Author: Lloigor (talk, contrib) |
Description
Open files with control over access, share and create modes with intuitive parameters.
Example
;; Open file with RW access, ReadOnly sharing, and if it does not exists, Creates it. $1 gets the file handle. ${FileOpen2} $1 "$SomeFile" "rw" "r" "c"
Function
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; Easily open files with more options than FileOpen ;; P1 :o: Handle returned ;; P2 :i: File name ;; P3 :i: Access Mode ;; 'r' : Readonly ;; 'w' : Writeonly ;; 'rw' : Read+Write ;; P4 :i: Share mode ;; '' : None (no access) ;; 'r' : Readonly (no delete, no write) ;; 'rw' : Read+Write (no delete) ;; 'rwd' : Read+Write+Delete (full share) ;; P5 :i: Create mode ;; '' : Open existing only ;; 'c' : Create if not exist ;; 'o' : Create and Overwrite ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; !define FileOpen2 "!insertmacro _FileOpen2" !macro _FileOpen2 _Handle_ _File_ _Access_ _Share_ _Create_ Push "${_Create_}" Push "${_Share_}" Push "${_Access_}" Push "${_File_}" Call FileOpen2 Pop ${_Handle_} !macroend Function FileOpen2 ;; $0:File, $1:Access, $2:Share, $3:Create Exch $0 Exch Exch $1 Exch 2 Exch $2 Exch 3 Exch $3 StrCmp "r" $1 0 +3 StrCpy $1 0x80000000 ;; GENERIC_READ Goto +6 StrCmp "w" $1 0 +3 StrCpy $1 0x40000000 ;; GENERIC_WRITE Goto +3 StrCmp "rw" $1 0 +3 StrCpy $1 0xC0000000 ;; GENERIC_READ | GENERIC_WRITE StrCmp "" $2 0 +3 StrCpy $2 0 ;; FILE_SHARE_NONE Goto +9 StrCmp "r" $2 0 +3 StrCpy $2 1 ;; FILE_SHARE_READ Goto +6 StrCmp "rw" $2 0 +3 StrCpy $2 3 ;; FILE_SHARE_READ | FILE_SHARE_WRITE Goto +3 StrCmp "rwd" $2 0 +3 StrCpy $2 7 ;; FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE StrCmp "" $3 0 +3 StrCpy $3 3 ;; OPEN_EXISTING Goto +6 StrCmp "c" $3 0 +3 StrCpy $3 4 ;; OPEN_ALWAYS Goto +3 StrCmp "o" $3 0 +3 StrCpy $3 2 ;; CREATE_ALWAYS System::Call 'Kernel32::CreateFile(t, i, i, i, i, i, i) i (r0, r1, r2, 0, r3, 0x80, 0) .r2' ;; Open/Create file Pop $3 Pop $0 Pop $1 Exch $2 FunctionEnd
