[vcpkg] Initial commit of powershell integration

scripts/posh-vcpkg/0.0.1/posh-vcpkg.psd1

@@ -0,0 +1,31 @@
+@{
+
+# Script module or binary module file associated with this manifest.
+ModuleToProcess = 'posh-vcpkg.psm1'
+
+# Version number of this module.
+ModuleVersion = '0.0.1'
+
+# ID used to uniquely identify this module
+GUID = '948f02ab-fc99-4a53-8335-b6556eef129b'
+
+# Minimum version of the Windows PowerShell engine required by this module
+PowerShellVersion = '5.0'
+
+FunctionsToExport = @('TabExpansion')
+CmdletsToExport = @()
+VariablesToExport = @()
+AliasesToExport = @()
+
+# Private data to pass to the module specified in RootModule/ModuleToProcess.
+# This may also contain a PSData hashtable with additional module metadata used by PowerShell.
+PrivateData = 
+@{
+    PSData =
+    @{
+        # Tags applied to this module. These help with module discovery in online galleries.
+        Tags = @('vcpkg', 'tab', 'tab-completion', 'tab-expansion', 'tabexpansion')
+    }
+}
+
+}

scripts/posh-vcpkg/0.0.1/posh-vcpkg.psm1

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+param()
+
+if (Get-Module posh-vcpkg) { return }
+
+if ($PSVersionTable.PSVersion.Major -lt 5) {
+    Write-Warning ("posh-vcpkg does not support PowerShell versions before 5.0.")
+    return
+}
+
+if (Test-Path Function:\TabExpansion) {
+    Rename-Item Function:\TabExpansion VcpkgTabExpansionBackup
+}
+
+function TabExpansion($line, $lastWord) {
+    $lastBlock = [regex]::Split($line, '[|;]')[-1].TrimStart()
+
+    switch -regex ($lastBlock) {
+        "^(?<vcpkgexe>(\./|\.\\|)vcpkg(\.exe|)) (?<remaining>.*)$"
+        {
+            & $matches['vcpkgexe'] autocomplete $matches['remaining']
+            return
+        }
+
+        # Fall back on existing tab expansion
+        default {
+            if (Test-Path Function:\VcpkgTabExpansionBackup) {
+                VcpkgTabExpansionBackup $line $lastWord
+            }
+        }
+    }
+}
+
+$exportModuleMemberParams = @{
+    Function = @(
+        'TabExpansion'
+    )
+}
+
+Export-ModuleMember @exportModuleMemberParams