custom json formatter

bin/formatjson.ps1

@@ -0,0 +1,26 @@
+# reformat manifest json
+param($path)
+
+. "$psscriptroot\..\lib\core.ps1"
+. "$psscriptroot\..\lib\manifest.ps1"
+. "$psscriptroot\..\lib\json.ps1"
+
+if(!$path) { $path = "$psscriptroot\..\bucket" }
+$path = resolve-path $path
+
+$dir = ""
+$type = Get-Item $path
+if ($type -is [System.IO.DirectoryInfo]) {
+    $dir = "$path\"
+    $files = Get-ChildItem $path "*.json"
+} elseif ($type -is [System.IO.FileInfo]) {
+    $files = @($path)
+} else {
+    Write-Error "unknown item"
+    exit
+}
+
+$files | % {
+    $json = parse_json "$dir$_" | ConvertToPrettyJson
+    [System.IO.File]::WriteAllLines("$dir$_", $json)
+}

lib/json.ps1

@@ -0,0 +1,88 @@
+# Convert objects to pretty json
+# Only needed until PowerShell ConvertTo-Json will be improved https://github.com/PowerShell/PowerShell/issues/2736
+Function ConvertToPrettyJson {
+    [cmdletbinding()]
+
+    Param (
+        [parameter(Mandatory, ValueFromPipeline)]
+        $data
+    )
+
+    Process  {
+        [String]$json = $data | ConvertTo-Json -Compress
+        [String]$output = ""
+
+        # state
+        [String]$buffer = ""
+        [Int]$depth = 0
+        [Bool]$inString = $false
+
+        # configuration
+        [String]$indent = " " * 4
+        [Bool]$unescapeString = $true
+        [String]$eol = "`r`n"
+
+        for ($i = 0; $i -lt $json.Length; $i++) {
+            # read current char
+            $buffer = $json.Substring($i, 1)
+
+            #
+            $objectStart = !$inString -and $buffer.Equals("{")
+            $objectEnd = !$inString -and $buffer.Equals("}")
+            $arrayStart = !$inString -and $buffer.Equals("[")
+            $arrayEnd = !$inString -and $buffer.Equals("]")
+            $colon = !$inString -and $buffer.Equals(":")
+            $comma = !$inString -and $buffer.Equals(",")
+            $quote = $buffer.Equals('"')
+            $escape = $buffer.Equals('\')
+
+            if ($quote) {
+                $inString = !$inString
+            }
+
+            # skip escape sequences
+            if ($escape) {
+                $buffer = $json.Substring($i, 2)
+                ++$i
+
+                # Unescape unicode
+                if ($inString -and $unescapeString) {
+                    if ($buffer.Equals('\n')) {
+                        $buffer = "`n"
+                    } elseif ($buffer.Equals('\r')) {
+                        $buffer = "`r"
+                    } elseif ($buffer.Equals('\t')) {
+                        $buffer = "`t"
+                    } elseif ($buffer.Equals('\u')) {
+                        $buffer = [regex]::Unescape($json.Substring($i - 1, 6))
+                        $i += 4
+                    }
+                }
+
+                $output += $buffer
+                continue
+            }
+
+            # indent / outdent
+            if ($objectStart -or $arrayStart) {
+                ++$depth
+            } elseif ($objectEnd -or $arrayEnd) {
+                --$depth
+                $output += $eol + ($indent * $depth)
+            }
+
+            # add content
+            $output += $buffer
+
+            # add whitespace and newlines after the content
+            if ($colon) {
+                $output += " "
+            } elseif ($comma -or $arrayStart -or $objectStart) {
+                $output += $eol
+                $output += $indent * $depth
+            }
+        }
+
+        $output
+    }
+}