PowerShell

Decode 2-digit Hex Escaped

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Demonstrates how to replace escaped us-ascii chars such as \x7b and \x22 with the chars. PowerShell

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

# We have the following string with some us-ascii chars escaped like this:
$s = "\x7b\x22responseContext\x22:\x7b\x22"

# Note: The above escaping does not conform to any standard format (as far as I know).
# Chilkat does not have anything to decode from the above.
# However, we can 1st transform into a standard format, and then decode..

# JSON escapes chars outside us-ascii like this:  "Hello, \ud83d\ude03!"
# We can transform the above to this:  "\u007b\u0022responseContext\u0022:\u007b\u0022"
# And then decode..

$sb = New-Object Chilkat.StringBuilder

$sb.Append($s)
$numReplaced = $sb.Replace("\\x","\\u00")

# Now decode from "json" escapes
$sb.Decode("json","utf-8")

# Show the decoded string
$($sb.GetAsString())

# Here's the result: {"responseContext":{"