add psscript to convert apiview json files to md (#45589)

Co-authored-by: swathipil <swathip@microsoft.com>

Author: azure-sdk

eng/common/scripts/Export-APIViewMarkdown.ps1

@@ -0,0 +1,155 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for license information.
+
+<#
+.SYNOPSIS
+Converts an APIView token JSON file into a markdown file.
+
+.DESCRIPTION
+Reads an APIView token JSON file (tree-style format) and renders its ReviewLines into
+a fenced markdown code block. This script is language-agnostic and works with token
+files produced by any APIView parser.
+
+.PARAMETER TokenJsonPath
+Required. Path to the input APIView token JSON file.
+
+.PARAMETER OutputPath
+Required. Path to write the output markdown file. If a directory is given, the file will be
+named api.md inside that directory.
+
+.EXAMPLE
+./Export-APIViewMarkdown.ps1 -TokenJsonPath ./azure-core_python.json -OutputPath ./api.md
+
+.EXAMPLE
+./Export-APIViewMarkdown.ps1 -TokenJsonPath ./azure-sdk_java.json -OutputPath ./output/
+#>
+
+[CmdletBinding()]
+param(
+    [Parameter(Mandatory = $true)]
+    [string]$TokenJsonPath,
+
+    [Parameter(Mandatory = $true)]
+    [string]$OutputPath
+)
+
+Set-StrictMode -Version 3
+$ErrorActionPreference = 'Stop'
+
+function Render-Token {
+    <#
+    .SYNOPSIS
+    Renders a single ReviewToken object to a string, applying HasPrefixSpace and HasSuffixSpace.
+    #>
+    param([PSCustomObject]$Token)
+
+    $prefix = if ($Token.HasPrefixSpace -eq $true) { " " } else { "" }
+    $suffix = if ($Token.HasSuffixSpace -eq $true) { " " } else { "" }
+    return "$prefix$($Token.Value)$suffix"
+}
+
+function Render-ReviewLines {
+    <#
+    .SYNOPSIS
+    Recursively renders a list of ReviewLine objects into an array of strings.
+    #>
+    param(
+        [object[]]$ReviewLines,
+        [int]$IndentLevel = 0
+    )
+
+    $result = [System.Collections.Generic.List[string]]::new()
+    $indent = "    " * $IndentLevel
+
+    foreach ($line in $ReviewLines) {
+        $tokens = @($line.Tokens)
+
+        if ($tokens.Count -eq 0) {
+            # Blank line
+            $result.Add("")
+        }
+        else {
+            $lineText = ($tokens | ForEach-Object { Render-Token $_ }) -join ""
+            if ($lineText.Trim() -ne "") {
+                $result.Add("$indent$lineText")
+            }
+            else {
+                $result.Add("")
+            }
+        }
+
+        # Recursively render children with increased indentation
+        $childrenProp = $line.PSObject.Properties.Item('Children')
+        if ($null -ne $childrenProp -and $null -ne $childrenProp.Value -and $childrenProp.Value.Count -gt 0) {
+            $childLines = Render-ReviewLines -ReviewLines $childrenProp.Value -IndentLevel ($IndentLevel + 1)
+            foreach ($childLine in $childLines) {
+                $result.Add($childLine)
+            }
+        }
+    }
+
+    return $result
+}
+
+# --- Main ---
+
+if (-not (Test-Path $TokenJsonPath)) {
+    Write-Error "Token JSON file not found: $TokenJsonPath"
+    exit 1
+}
+
+$tokenJson = Get-Content -Path $TokenJsonPath -Raw | ConvertFrom-Json
+
+if (-not $tokenJson.ReviewLines) {
+    Write-Error "The token JSON file does not contain a 'ReviewLines' property."
+    exit 1
+}
+
+# Resolve output path: if a directory is given, default filename to api.md
+if (Test-Path $OutputPath -PathType Container) {
+    $OutputPath = Join-Path $OutputPath "api.md"
+}
+elseif (-not [System.IO.Path]::HasExtension($OutputPath)) {
+    $OutputPath = Join-Path $OutputPath "api.md"
+}
+
+# Read language from the token JSON, falling back to empty string
+$language = if ($tokenJson.PSObject.Properties.Item('Language') -and $tokenJson.Language) {
+    $tokenJson.Language.ToLower()
+} else {
+    ""
+}
+
+# Map full language names to common code fence identifiers
+$languageAliases = @{
+    "python"     = "py"
+    "javascript" = "js"
+    "typescript" = "ts"
+}
+if ($languageAliases.ContainsKey($language)) {
+    $language = $languageAliases[$language]
+}
+
+$reviewLines = @($tokenJson.ReviewLines)
+$renderedLines = Render-ReviewLines -ReviewLines $reviewLines
+
+$fenceOpen = "``````$language"
+$fenceClose = "``````"
+
+$outputLines = [System.Collections.Generic.List[string]]::new()
+$outputLines.Add($fenceOpen)
+foreach ($line in $renderedLines) {
+    $outputLines.Add($line)
+}
+$outputLines.Add($fenceClose)
+
+$outputContent = $outputLines -join "`n"
+
+$outputDir = Split-Path -Parent $OutputPath
+if ($outputDir -and -not (Test-Path $outputDir)) {
+    New-Item -ItemType Directory -Path $outputDir -Force | Out-Null
+}
+
+Set-Content -Path $OutputPath -Value $outputContent -NoNewline -Encoding utf8
+
+Write-Host "Generated markdown: $OutputPath"