Windows/VpnDial-installer/vpn_functions.nsi

; $Id: vpn.nsi,v 1.1 2005/11/18 19:06:27 joko Exp $

Function FileSearch
  Exch $0 ;search for
  Exch
  Exch $1 ;input file
  Exch
  Push $2
  Push $3
  Push $4
  Push $5
  Push $6
  Push $7
  Push $8
  Push $9
  Push $R0
    FileOpen $2 $1 r
    StrLen $4 $0
    StrCpy $5 0
    StrCpy $7 no
    StrCpy $8 0
    StrCpy $9 0
  loop_main:
    FileRead $2 $3
    IfErrors done
   IntOp $R0 $R0 + $9
    StrCpy $9 0
    StrCpy $5 0
  filter_top:
   IntOp $5 $5 - 1
    StrCpy $6 $3 $4 $5
    StrCmp $6 "" loop_main
    StrCmp $6 $0 0 filter_top
    StrCpy $3 $3 $5
    StrCpy $5 0
   StrCpy $7 yes
   StrCpy $9 1
   IntOp $8 $8 + 1
  Goto filter_top
  done:
    FileClose $2
    StrCpy $0 $8
    StrCpy $1 $7
    StrCpy $2 $R0
  Pop $R0
  Pop $9
  Pop $8
  Pop $7
  Pop $6
  Pop $5
  Pop $4
  Pop $3
  Exch 2
  Exch $2 ;output number of lines
  Exch 2
  Exch
  Exch $1 ;output yes/no
  Exch
  Exch $0 ;output count found
FunctionEnd


Function JoinFiles
  Exch $1
  Exch
  Exch $3
  Exch
  Exch 2
  Exch $4
  Exch 2
  Push $0
  Push $2
  Push $5
    GetTempFileName $5
    SetDetailsPrint none
    CopyFiles $1 $5
    SetDetailsPrint both
  FileOpen $0 $5 a
  FileOpen $2 $3 r
  loop1:
    FileRead $0 $1
    IfErrors doneloop1
  Goto loop1
  doneloop1:
    FileWrite $0 "$\r$\n$\r$\n$\r$\n" #Optional [divider]
  loop2:
    FileRead $2 $1
    FileWrite $0 $1
    IfErrors done
  Goto loop2
  done:
     FileClose $2
     FileClose $0
    SetDetailsPrint none
    IfFileExists $4 0 +2
    Delete $4
    CopyFiles $5 $4
    Delete $5
    SetDetailsPrint both
  Pop $5
  Pop $2
  Pop $0
  Pop $4
  Pop $3
  Pop $1
FunctionEnd


Function AdvReplaceInFile

; Taken from http://nsis.sourceforge.net/archive/nsisweb.php?page=316&instances=0,11,311
; Hacked by Jolo of Xegony to simplify the removal of a line
        ;; Note that this wont do the right thing if you're trying to
        ;; null out a substring within a line.  If the replacement is
        ;; null, we're assuming you want to null out the entire line.

    Exch $0 ;file to replace in
    Exch
    Exch $1 ;number to replace after
    Exch
    Exch 2
    Exch $2 ;replace and onwards
    Exch 2
    Exch 3
    Exch $3 ;replace with
    Exch 3
    Exch 4
    Exch $4 ;to replace
    Exch 4
    Push $5 ;minus count
    Push $6 ;universal
    Push $7 ;end string
    Push $8 ;left string
    Push $9 ;right string
    Push $R0 ;file1
    Push $R1 ;file2
    Push $R2 ;read
    Push $R3 ;universal
    Push $R4 ;count (onwards)
    Push $R5 ;count (after)
    Push $R6 ;temp file name

        GetTempFileName $R6
        FileOpen $R1 $0 r ;file to search in
        FileOpen $R0 $R6 w ;temp file
        StrLen $R3 $4                    ; $R3 = strlen(search_for)
        StrCpy $R4 -1                    ; $R4 = -1
        StrCpy $R5 -1                    ; $R5 = -1

    loop_read:
        ClearErrors
        FileRead $R1 $R2 ;read line
        IfErrors exit

        StrCpy $5 0                      ; $ptr = 0
        StrCpy $7 $R2                    ; $line = current_line

    loop_filter:
        IntOp $5 $5 - 1                  ; $ptr--
        StrCpy $6 $7 $R3 $5 ;search      ; $examine = substr($line, len:len_search_for, ptr_from_end)
        StrCmp $6 "" file_write2         ; if ($examine==NULL) write unmod'd line  # escape clause
        StrCmp $6 $4 0 loop_filter       ; if ($examine==$search_for) { continue; } else { loop_filter )

        ;; found it
        ;; DetailPrint "Found: SEARCH[$4]"
        StrCpy $8 $7 $5 ;left part       ; $left = substr($line, $ptr)
        IntOp $6 $5 + $R3                ; $6 = position + strlen(search_for)
        StrCpy $9 $7 "" $6 ;right part   ; $right = line 

        StrLen $6 $7                     ; $6 = strlen(line)

        StrCpy $7 $8$3$9 ;re-join        ; $line = $left + $replace + $right
        ;; DetailPrint "new = [$8][$3][$9] = [$7]"

        ;; what's this test for?
        StrCmp -$6 $5 0 loop_filter      ; if (strlen($line) == len(ptr)) then {continue } else { scan more? } 

        ;; replacement qualifier(s)
        ;; start replacing after $2 occurrences
        IntOp $R4 $R4 + 1                
        StrCmp $2 all file_write1
        StrCmp $R4 $2 0 file_write2
        IntOp $R4 $R4 - 1

        ;; replacement qualifier(s)
        ;; replace next $1 occurrences 
        IntOp $R5 $R5 + 1
        StrCmp $1 all file_write1
        StrCmp $R5 $1 0 file_write1
        IntOp $R5 $R5 - 1
    Goto file_write2

    file_write1:
        ;; Note that this wont do the right thing if you're trying to
        ;; null out a substring within a line.  If the replacement is
        ;; null, we're assuming you want to null out the entire line.
        StrCmp $3 "" loop_read 0                          ;; bail if we're trying to delete a line           
        ;; DetailPrint "WRITING MODIFIED = [$7]"
        FileWrite $R0 $7 ;write modified line
    Goto loop_read

    file_write2:
        ;; DetailPrint "WRITING UNMODIFIED = [$R2]"
        FileWrite $R0 $R2 ;write unmodified line
    Goto loop_read

    exit:
        FileClose $R0
        FileClose $R1

        SetDetailsPrint none
        Delete $0
        Rename $R6 $0
        Delete $R6
        SetDetailsPrint both

    Pop $R6
    Pop $R5
    Pop $R4
    Pop $R3
    Pop $R2
    Pop $R1
    Pop $R0
    Pop $9
    Pop $8
    Pop $7
    Pop $6
    Pop $5
    Pop $4
    Pop $3
    Pop $2
    Pop $1
    Pop $0
FunctionEnd
1	joko	1.1	; $Id: vpn.nsi,v 1.1 2005/11/18 19:06:27 joko Exp $
2
3			Function FileSearch
4			Exch $0 ;search for
5			Exch
6			Exch $1 ;input file
7			Exch
8			Push $2
9			Push $3
10			Push $4
11			Push $5
12			Push $6
13			Push $7
14			Push $8
15			Push $9
16			Push $R0
17			FileOpen $2 $1 r
18			StrLen $4 $0
19			StrCpy $5 0
20			StrCpy $7 no
21			StrCpy $8 0
22			StrCpy $9 0
23			loop_main:
24			FileRead $2 $3
25			IfErrors done
26			IntOp $R0 $R0 + $9
27			StrCpy $9 0
28			StrCpy $5 0
29			filter_top:
30			IntOp $5 $5 - 1
31			StrCpy $6 $3 $4 $5
32			StrCmp $6 "" loop_main
33			StrCmp $6 $0 0 filter_top
34			StrCpy $3 $3 $5
35			StrCpy $5 0
36			StrCpy $7 yes
37			StrCpy $9 1
38			IntOp $8 $8 + 1
39			Goto filter_top
40			done:
41			FileClose $2
42			StrCpy $0 $8
43			StrCpy $1 $7
44			StrCpy $2 $R0
45			Pop $R0
46			Pop $9
47			Pop $8
48			Pop $7
49			Pop $6
50			Pop $5
51			Pop $4
52			Pop $3
53			Exch 2
54			Exch $2 ;output number of lines
55			Exch 2
56			Exch
57			Exch $1 ;output yes/no
58			Exch
59			Exch $0 ;output count found
60			FunctionEnd
61
62
63			Function JoinFiles
64			Exch $1
65			Exch
66			Exch $3
67			Exch
68			Exch 2
69			Exch $4
70			Exch 2
71			Push $0
72			Push $2
73			Push $5
74			GetTempFileName $5
75			SetDetailsPrint none
76			CopyFiles $1 $5
77			SetDetailsPrint both
78			FileOpen $0 $5 a
79			FileOpen $2 $3 r
80			loop1:
81			FileRead $0 $1
82			IfErrors doneloop1
83			Goto loop1
84			doneloop1:
85			FileWrite $0 "$\r$\n$\r$\n$\r$\n" #Optional [divider]
86			loop2:
87			FileRead $2 $1
88			FileWrite $0 $1
89			IfErrors done
90			Goto loop2
91			done:
92			FileClose $2
93			FileClose $0
94			SetDetailsPrint none
95			IfFileExists $4 0 +2
96			Delete $4
97			CopyFiles $5 $4
98			Delete $5
99			SetDetailsPrint both
100			Pop $5
101			Pop $2
102			Pop $0
103			Pop $4
104			Pop $3
105			Pop $1
106			FunctionEnd
107
108
109			Function AdvReplaceInFile
110
111			; Taken from http://nsis.sourceforge.net/archive/nsisweb.php?page=316&instances=0,11,311
112			; Hacked by Jolo of Xegony to simplify the removal of a line
113			;; Note that this wont do the right thing if you're trying to
114			;; null out a substring within a line. If the replacement is
115			;; null, we're assuming you want to null out the entire line.
116
117			Exch $0 ;file to replace in
118			Exch
119			Exch $1 ;number to replace after
120			Exch
121			Exch 2
122			Exch $2 ;replace and onwards
123			Exch 2
124			Exch 3
125			Exch $3 ;replace with
126			Exch 3
127			Exch 4
128			Exch $4 ;to replace
129			Exch 4
130			Push $5 ;minus count
131			Push $6 ;universal
132			Push $7 ;end string
133			Push $8 ;left string
134			Push $9 ;right string
135			Push $R0 ;file1
136			Push $R1 ;file2
137			Push $R2 ;read
138			Push $R3 ;universal
139			Push $R4 ;count (onwards)
140			Push $R5 ;count (after)
141			Push $R6 ;temp file name
142
143			GetTempFileName $R6
144			FileOpen $R1 $0 r ;file to search in
145			FileOpen $R0 $R6 w ;temp file
146			StrLen $R3 $4 ; $R3 = strlen(search_for)
147			StrCpy $R4 -1 ; $R4 = -1
148			StrCpy $R5 -1 ; $R5 = -1
149
150			loop_read:
151			ClearErrors
152			FileRead $R1 $R2 ;read line
153			IfErrors exit
154
155			StrCpy $5 0 ; $ptr = 0
156			StrCpy $7 $R2 ; $line = current_line
157
158			loop_filter:
159			IntOp $5 $5 - 1 ; $ptr--
160			StrCpy $6 $7 $R3 $5 ;search ; $examine = substr($line, len:len_search_for, ptr_from_end)
161			StrCmp $6 "" file_write2 ; if ($examine==NULL) write unmod'd line # escape clause
162			StrCmp $6 $4 0 loop_filter ; if ($examine==$search_for) { continue; } else { loop_filter )
163
164			;; found it
165			;; DetailPrint "Found: SEARCH[$4]"
166			StrCpy $8 $7 $5 ;left part ; $left = substr($line, $ptr)
167			IntOp $6 $5 + $R3 ; $6 = position + strlen(search_for)
168			StrCpy $9 $7 "" $6 ;right part ; $right = line
169
170			StrLen $6 $7 ; $6 = strlen(line)
171
172			StrCpy $7 $8$3$9 ;re-join ; $line = $left + $replace + $right
173			;; DetailPrint "new = [$8][$3][$9] = [$7]"
174
175			;; what's this test for?
176			StrCmp -$6 $5 0 loop_filter ; if (strlen($line) == len(ptr)) then {continue } else { scan more? }
177
178			;; replacement qualifier(s)
179			;; start replacing after $2 occurrences
180			IntOp $R4 $R4 + 1
181			StrCmp $2 all file_write1
182			StrCmp $R4 $2 0 file_write2
183			IntOp $R4 $R4 - 1
184
185			;; replacement qualifier(s)
186			;; replace next $1 occurrences
187			IntOp $R5 $R5 + 1
188			StrCmp $1 all file_write1
189			StrCmp $R5 $1 0 file_write1
190			IntOp $R5 $R5 - 1
191			Goto file_write2
192
193			file_write1:
194			;; Note that this wont do the right thing if you're trying to
195			;; null out a substring within a line. If the replacement is
196			;; null, we're assuming you want to null out the entire line.
197			StrCmp $3 "" loop_read 0 ;; bail if we're trying to delete a line
198			;; DetailPrint "WRITING MODIFIED = [$7]"
199			FileWrite $R0 $7 ;write modified line
200			Goto loop_read
201
202			file_write2:
203			;; DetailPrint "WRITING UNMODIFIED = [$R2]"
204			FileWrite $R0 $R2 ;write unmodified line
205			Goto loop_read
206
207			exit:
208			FileClose $R0
209			FileClose $R1
210
211			SetDetailsPrint none
212			Delete $0
213			Rename $R6 $0
214			Delete $R6
215			SetDetailsPrint both
216
217			Pop $R6
218			Pop $R5
219			Pop $R4
220			Pop $R3
221			Pop $R2
222			Pop $R1
223			Pop $R0
224			Pop $9
225			Pop $8
226			Pop $7
227			Pop $6
228			Pop $5
229			Pop $4
230			Pop $3
231			Pop $2
232			Pop $1
233			Pop $0
234			FunctionEnd
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