PSUtils/ClipboardFunctions.ps1 at master · ecsousa/PSUtils · GitHub

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
# Code from https://gist.github.com/danielmoore/2322634
# Credits for Daniel Moore (https://github.com/danielmoore)

Add-Type -Namespace PowershellPlatformInterop -Name Clipboard -MemberDefinition @"
[DllImport("user32.dll", SetLastError=true)]
public static extern bool EmptyClipboard();

[DllImport("user32.dll", SetLastError=true)]
public static extern IntPtr SetClipboardData(uint uFormat, IntPtr hMem);

[DllImport("user32.dll", SetLastError=true)]
public static extern IntPtr GetClipboardData(uint uFormat);

[DllImport("user32.dll", SetLastError=true)]
public static extern bool OpenClipboard(IntPtr hWndNewOwner);

[DllImport("user32.dll", SetLastError=true)]
public static extern bool CloseClipboard();

[DllImport("user32.dll", SetLastError=true)]
public static extern uint EnumClipboardFormats(uint format);
"@

function Assert-Win32CallSuccess {
    param(
        [Switch]$PassThru,
        [Switch]$NullIsError,
        [ScriptBlock]$Action)

    $result = & $Action

    if($NullIsError -and $result -eq 0 -or -not $NullIsError -and $result -ne 0) {
        $errorCode = [Runtime.InteropServices.Marshal]::GetLastWin32Error()
        [Runtime.InteropServices.Marshal]::ThrowExceptionForHR($errorCode)
    }

    if ($PassThru) {
        $result
    }
}

function Use-Clipboard {
    param([ScriptBlock]$Action)

    if($script:isClipboardOwned) { return & $Action }

    $script:isClipboardOwned = $true

    Assert-Win32CallSuccess {
        [PowershellPlatformInterop.Clipboard]::OpenClipboard([IntPtr]::Zero)
    }

    try { & $Action }
    finally {
        Assert-Win32CallSuccess {
            [PowershellPlatformInterop.Clipboard]::CloseClipboard()
        }

        $script:isClipboardOwned = $false
    }
}

function Clear-Clipboard {
    Use-Clipboard {
        Assert-Win32CallSuccess {
            [PowershellPlatformInterop.Clipboard]::EmptyClipboard()
        }
    }
}

$ansiTextFormat = 1
$unicodeTextFormat = 13

function Set-ClipboardText {
    param([Parameter(ValueFromPipeline=$true)][string]$Value)
    begin {
        $textToCopy = $null
    }
    process {
        if($textToCopy -ne $null) {
            $textToCopy = $textToCopy + [Environment]::NewLine;
        }

        $textToCopy = $textToCopy + $Value;
    }
    end {
        Use-Clipboard {
            Clear-Clipboard

            $ptr = [Runtime.InteropServices.Marshal]::StringToHGlobalUni($textToCopy)
            Assert-Win32CallSuccess -NullIsError {
                [PowershellPlatformInterop.Clipboard]::SetClipboardData($unicodeTextFormat, $ptr)
            }

        }
    }
}

function Get-ClipboardFormats {
    Use-Clipboard {
        $prev = 0

        while($true) {
            $prev = Assert-Win32CallSuccess -NullIsError -PassThru {
              [PowershellPlatformInterop.Clipboard]::EnumClipboardFormats($prev)
            }

            if ($prev -eq 0) { break; }

            $prev
        }
    }
}

function Get-ClipboardText {
    Use-Clipboard {
        $formats = Get-ClipboardFormats

        $clip = if($formats -contains $unicodeTextFormat) {
            $ptr = Assert-Win32CallSuccess -PassThru -NullIsError {
                [PowershellPlatformInterop.Clipboard]::GetClipboardData($unicodeTextFormat)
            }

            if ($ptr -ne 0) {
                [Runtime.InteropServices.Marshal]::PtrToStringUni($ptr)
            }
        } elseif($formats -contains $ansiTextFormat) {
            $ptr = Assert-Win32CallSuccess -PassThru -NullIsError {
                [PowershellPlatformInterop.Clipboard]::GetClipboardData($ansiTextFormat)
            }

            if ($ptr -ne 0) {
                [Runtime.InteropServices.Marshal]::PtrToStringAnsi($ptr)
            }
        }

        $current = 0;
        while($current -ge 0) {
            $idx = $clip.IndexOf([System.Environment]::NewLine, $current);

            if($idx -eq -1) {
                $clip.Substring($current);
                $current = $idx
            }
            else {
                $clip.Substring($current, $idx - $current);
                $current = $idx + 2
            }

        }

    }


}