File: modpath.iss

package info (click to toggle)
arbtt 0.10.1-1
  • links: PTS
  • area: main
  • in suites: buster
  • size: 600 kB
  • sloc: haskell: 3,484; xml: 2,038; makefile: 33
file content (157 lines) | stat: -rw-r--r-- 5,074 bytes parent folder | download | duplicates (6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
// ----------------------------------------------------------------------------
//
// Inno Setup Ver:  5.2.1
// Script Version:  1.3.1
// Author:          Jared Breland <jbreland@legroom.net>
// Homepage:		http://www.legroom.net/software
//
// Script Function:
//	Enable modification of system path directly from Inno Setup installers
//
// Instructions:
//	Copy modpath.iss to the same directory as your setup script
//
//	Add this statement to your [Setup] section
//		ChangesEnvironment=yes
//
//	Add this statement to your [Tasks] section
//	You can change the Description or Flags, but the Name must be modifypath
//		Name: modifypath; Description: &Add application directory to your system path; Flags: unchecked
//
//	Add the following to the end of your [Code] section
//	setArrayLength must specify the total number of dirs to be added
//	Dir[0] contains first directory, Dir[1] contains second, etc.
//		function ModPathDir(): TArrayOfString;
//		var
//			Dir:	TArrayOfString;
//		begin
//			setArrayLength(Dir, 1)
//			Dir[0] := ExpandConstant('{app}');
//			Result := Dir;
//		end;
//		#include "modpath.iss"
// ----------------------------------------------------------------------------

procedure ModPath();
var
	oldpath:	String;
	newpath:	String;
	pathArr:	TArrayOfString;
	aExecFile:	String;
	aExecArr:	TArrayOfString;
	i, d:		Integer;
	pathdir:	TArrayOfString;
begin

	// Get array of new directories and act on each individually
	pathdir := ModPathDir();
	for d := 0 to GetArrayLength(pathdir)-1 do begin

		// Modify WinNT path
		if UsingWinNT() = true then begin

			// Get current path, split into an array
			RegQueryStringValue(HKEY_LOCAL_MACHINE, 'SYSTEM\CurrentControlSet\Control\Session Manager\Environment', 'Path', oldpath);
			oldpath := oldpath + ';';
			i := 0;
			while (Pos(';', oldpath) > 0) do begin
				SetArrayLength(pathArr, i+1);
				pathArr[i] := Copy(oldpath, 0, Pos(';', oldpath)-1);
				oldpath := Copy(oldpath, Pos(';', oldpath)+1, Length(oldpath));
				i := i + 1;

				// Check if current directory matches app dir
				if pathdir[d] = pathArr[i-1] then begin
					// if uninstalling, remove dir from path
					if IsUninstaller() = true then begin
						continue;
					// if installing, abort because dir was already in path
					end else begin
						abort;
					end;
				end;

				// Add current directory to new path
				if i = 1 then begin
					newpath := pathArr[i-1];
				end else begin
					newpath := newpath + ';' + pathArr[i-1];
				end;
			end;

			// Append app dir to path if not already included
			if IsUninstaller() = false then
				newpath := newpath + ';' + pathdir[d];

			// Write new path
			RegWriteStringValue(HKEY_LOCAL_MACHINE, 'SYSTEM\CurrentControlSet\Control\Session Manager\Environment', 'Path', newpath);

		// Modify Win9x path
		end else begin

			// Convert to shortened dirname
			pathdir[d] := GetShortName(pathdir[d]);

			// If autoexec.bat exists, check if app dir already exists in path
			aExecFile := 'C:\AUTOEXEC.BAT';
			if FileExists(aExecFile) then begin
				LoadStringsFromFile(aExecFile, aExecArr);
				for i := 0 to GetArrayLength(aExecArr)-1 do begin
					if IsUninstaller() = false then begin
						// If app dir already exists while installing, abort add
						if (Pos(pathdir[d], aExecArr[i]) > 0) then
							abort;
					end else begin
						// If app dir exists and = what we originally set, then delete at uninstall
						if aExecArr[i] = 'SET PATH=%PATH%;' + pathdir[d] then
							aExecArr[i] := '';
					end;
				end;
			end;

			// If app dir not found, or autoexec.bat didn't exist, then (create and) append to current path
			if IsUninstaller() = false then begin
				SaveStringToFile(aExecFile, #13#10 + 'SET PATH=%PATH%;' + pathdir[d], True);

			// If uninstalling, write the full autoexec out
			end else begin
				SaveStringsToFile(aExecFile, aExecArr, False);
			end;
		end;

		// Write file to flag modifypath was selected
		//   Workaround since IsTaskSelected() cannot be called at uninstall and AppName and AppId cannot be "read" in Code section
		if IsUninstaller() = false then
			SaveStringToFile(ExpandConstant('{app}') + '\uninsTasks.txt', WizardSelectedTasks(False), False);
	end;
end;

procedure CurStepChanged(CurStep: TSetupStep);
begin
	if CurStep = ssPostInstall then
		if IsTaskSelected('modifypath') then
			ModPath();
end;

procedure CurUninstallStepChanged(CurUninstallStep: TUninstallStep);
var
	appdir:			String;
	selectedTasks:	AnsiString;
begin
	appdir := ExpandConstant('{app}')
	if CurUninstallStep = usUninstall then begin
		if LoadStringFromFile(appdir + '\uninsTasks.txt', selectedTasks) then
			if Pos('modifypath', selectedTasks) > 0 then
				ModPath();
		DeleteFile(appdir + '\uninsTasks.txt')
	end;
end;

function NeedRestart(): Boolean;
begin
	if IsTaskSelected('modifypath') and not UsingWinNT() then begin
		Result := True;
	end else begin
		Result := False;
	end;
end;