feat: add sqlcmd open vscode and sqlcmd open ssms commands

Add 'sqlcmd open vscode' and 'sqlcmd open ssms' subcommands that launch
VS Code or SSMS pre-configured with the active sqlcmd context's connection.

VS Code integration:
- Creates/updates mssql.connections in VS Code settings.json
- Preserves JSONC comments via surgical byte-level patchJSONCKey
- Atomic temp-file-then-rename write to prevent corruption
- Copies password to clipboard with security warning

SSMS integration:
- Launches SSMS with connection parameters via command line
- Windows-only with platform stub for Unix

Includes clipboard helpers, JSONC parser/patcher, platform abstractions,
and comprehensive tests.

Author: dlevy-msft-sql

.gitignore

@@ -36,6 +36,7 @@ linux-s390x/sqlcmd
 # Build artifacts in root
 /sqlcmd
 /sqlcmd_binary
+/modern
 
 # certificates used for local testing
 *.der

README.md

@@ -61,18 +61,55 @@ The Homebrew package manager may be used on Linux and Windows Subsystem for Linu
 
 Use `sqlcmd` to create SQL Server and Azure SQL Edge instances using a local container runtime (e.g. [Docker][] or [Podman][])
 
-### Create SQL Server instance using local container runtime and connect using Azure Data Studio
+### Create SQL Server instance using local container runtime
 
-To create a local SQL Server instance with the AdventureWorksLT database restored, query it, and connect to it using Azure Data Studio, run:
+To create a local SQL Server instance with the AdventureWorksLT database restored, run:
 
 ```
 sqlcmd create mssql --accept-eula --using https://aka.ms/AdventureWorksLT.bak
 sqlcmd query "SELECT DB_NAME()"
-sqlcmd open ads
 ```
 
 Use `sqlcmd --help` to view all the available sub-commands.  Use `sqlcmd -?` to view the original ODBC `sqlcmd` flags.
 
+### Connect using Visual Studio Code
+
+Use `sqlcmd open vscode` to open Visual Studio Code with a connection profile configured for the current context:
+
+```
+sqlcmd open vscode
+```
+
+This command will:
+1. **Create a connection profile** in VS Code's user settings with the current context name
+2. **Copy the password to clipboard** so you can paste it when prompted
+3. **Launch VS Code** ready to connect
+
+To also install the MSSQL extension (if not already installed), add the `--install-extension` flag:
+
+```
+sqlcmd open vscode --install-extension
+```
+
+Once VS Code opens, use the MSSQL extension's Object Explorer to connect using the profile. When you connect to the container, VS Code will automatically detect it as a Docker container and provide additional container management features (start/stop/delete) directly from the Object Explorer.
+
+> **Note:** For remote servers that use password-based (basic) authentication, use `sqlcmd open ads` instead. The `open vscode` command only supports password-based auth for local containers. Passwordless auth (Windows integrated, AAD) works for all contexts.
+
+### Connect using SQL Server Management Studio (Windows)
+
+On Windows, use `sqlcmd open ssms` to open SQL Server Management Studio pre-configured to connect to the current context:
+
+```
+sqlcmd open ssms
+```
+
+This command will:
+1. **Copy the password to clipboard** so you can paste it in the login dialog
+2. **Launch SSMS** with the server and username pre-filled
+3. You'll be prompted for the password - just paste from clipboard (Ctrl+V)
+
+> **Note:** For remote servers that use password-based (basic) authentication, use `sqlcmd open ads` instead. The `open ssms` command only supports password-based auth for local containers. Passwordless auth (Windows integrated, AAD) works for all contexts.
+
 ### The ~/.sqlcmd/sqlconfig file
 
 Each time `sqlcmd create` completes, a new context is created (e.g. mssql, mssql2, mssql3 etc.).  A context contains the endpoint and user configuration detail.  To switch between contexts, run `sqlcmd config use <context-name>`, to view name of the current context, run `sqlcmd config current-context`, to list all contexts, run `sqlcmd config get-contexts`.

cmd/modern/root/open.go

@@ -17,19 +17,21 @@ type Open struct {
 func (c *Open) DefineCommand(...cmdparser.CommandOptions) {
 	options := cmdparser.CommandOptions{
 		Use:         "open",
-		Short:       localizer.Sprintf("Open tools (e.g Azure Data Studio) for current context"),
+		Short:       localizer.Sprintf("Open tools (e.g., Azure Data Studio, VS Code, SSMS) for current context"),
 		SubCommands: c.SubCommands(),
 	}
 
 	c.Cmd.DefineCommand(options)
 }
 
 // SubCommands sets up the sub-commands for `sqlcmd open` such as
-// `sqlcmd open ads`
+// `sqlcmd open ads`, `sqlcmd open vscode`, and `sqlcmd open ssms`
 func (c *Open) SubCommands() []cmdparser.Command {
 	dependencies := c.Dependencies()
 
 	return []cmdparser.Command{
 		cmdparser.New[*open.Ads](dependencies),
+		cmdparser.New[*open.VSCode](dependencies),
+		cmdparser.New[*open.Ssms](dependencies),
 	}
 }

cmd/modern/root/open/ads_test.go

@@ -4,17 +4,24 @@
 package open
 
 import (
+	"runtime"
+	"testing"
+
 	"github.com/microsoft/go-sqlcmd/cmd/modern/sqlconfig"
 	"github.com/microsoft/go-sqlcmd/internal/cmdparser"
 	"github.com/microsoft/go-sqlcmd/internal/config"
-	"runtime"
-	"testing"
+	"github.com/microsoft/go-sqlcmd/internal/tools"
 )
 
-// TestOpen runs a sanity test of `sqlcmd open`
+// TestAds runs a sanity test of `sqlcmd open ads`
 func TestAds(t *testing.T) {
 	if runtime.GOOS != "windows" {
-		t.Skip("Ads support only on Windows at this time")
+		t.Skip("ADS support only on Windows at this time")
+	}
+
+	tool := tools.NewTool("ads")
+	if !tool.IsInstalled() {
+		t.Skip("Azure Data Studio is not installed")
 	}
 
 	cmdparser.TestSetup(t)

cmd/modern/root/open/clipboard.go

@@ -0,0 +1,33 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+package open
+
+import (
+	"github.com/microsoft/go-sqlcmd/cmd/modern/sqlconfig"
+	"github.com/microsoft/go-sqlcmd/internal/config"
+	"github.com/microsoft/go-sqlcmd/internal/localizer"
+	"github.com/microsoft/go-sqlcmd/internal/output"
+	"github.com/microsoft/go-sqlcmd/internal/pal"
+)
+
+func copyPasswordToClipboard(user *sqlconfig.User, out *output.Output) bool {
+	if user == nil || user.AuthenticationType != "basic" {
+		return false
+	}
+
+	_, _, password := config.GetCurrentContextInfo()
+
+	if password == "" {
+		return false
+	}
+
+	err := pal.CopyToClipboard(password)
+	if err != nil {
+		out.Warn(localizer.Sprintf("Could not copy password to clipboard: %s", err.Error()))
+		return false
+	}
+
+	out.Info(localizer.Sprintf("Password copied to clipboard - paste it when prompted, then clear your clipboard"))
+	return true
+}

cmd/modern/root/open/clipboard_test.go

@@ -0,0 +1,43 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+package open
+
+import (
+	"runtime"
+	"testing"
+
+	"github.com/microsoft/go-sqlcmd/cmd/modern/sqlconfig"
+	"github.com/microsoft/go-sqlcmd/internal/cmdparser"
+)
+
+func TestCopyPasswordToClipboardWithNoUser(t *testing.T) {
+	if runtime.GOOS == "linux" {
+		t.Skip("Skipping on Linux due to ADS tool initialization issue in tools factory")
+	}
+
+	cmdparser.TestSetup(t)
+
+	result := copyPasswordToClipboard(nil, nil)
+	if result {
+		t.Error("Expected false when user is nil")
+	}
+}
+
+func TestCopyPasswordToClipboardWithNonBasicAuth(t *testing.T) {
+	if runtime.GOOS == "linux" {
+		t.Skip("Skipping on Linux due to ADS tool initialization issue in tools factory")
+	}
+
+	cmdparser.TestSetup(t)
+
+	user := &sqlconfig.User{
+		AuthenticationType: "windows",
+		Name:               "test-user",
+	}
+
+	result := copyPasswordToClipboard(user, nil)
+	if result {
+		t.Error("Expected false when auth type is not 'basic'")
+	}
+}

cmd/modern/root/open/jsonc.go

@@ -0,0 +1,76 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+package open
+
+// stripJSONC removes comments (// and /* */) and trailing commas from JSONC
+// data, producing valid JSON. String literals are preserved as-is.
+func stripJSONC(data []byte) []byte {
+	var result []byte
+	i := 0
+	n := len(data)
+
+	for i < n {
+		// String literal: copy verbatim, respecting escape sequences
+		if data[i] == '"' {
+			result = append(result, data[i])
+			i++
+			for i < n && data[i] != '"' {
+				if data[i] == '\\' && i+1 < n {
+					result = append(result, data[i], data[i+1])
+					i += 2
+					continue
+				}
+				result = append(result, data[i])
+				i++
+			}
+			if i < n {
+				result = append(result, data[i]) // closing "
+				i++
+			}
+			continue
+		}
+
+		// Line comment: skip to end of line
+		if i+1 < n && data[i] == '/' && data[i+1] == '/' {
+			i += 2
+			for i < n && data[i] != '\n' {
+				i++
+			}
+			continue
+		}
+
+		// Block comment: skip to closing */
+		if i+1 < n && data[i] == '/' && data[i+1] == '*' {
+			i += 2
+			for i+1 < n {
+				if data[i] == '*' && data[i+1] == '/' {
+					i += 2
+					break
+				}
+				i++
+			}
+			continue
+		}
+
+		result = append(result, data[i])
+		i++
+	}
+
+	// Second pass: remove trailing commas before ] or }
+	cleaned := make([]byte, 0, len(result))
+	for i := 0; i < len(result); i++ {
+		if result[i] == ',' {
+			j := i + 1
+			for j < len(result) && (result[j] == ' ' || result[j] == '\t' || result[j] == '\n' || result[j] == '\r') {
+				j++
+			}
+			if j < len(result) && (result[j] == ']' || result[j] == '}') {
+				continue // skip trailing comma
+			}
+		}
+		cleaned = append(cleaned, result[i])
+	}
+
+	return cleaned
+}