PowerShell

curl with Variable Substitution in the Request Body

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This example demonstrates using variables located in the request body with the {{variable_name}} syntax. PowerShell

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

$success = $false

# Variables can also be used within the HTTP request body.
# Variable names are enclosed between {{ and }}

# Here is a curl command with two variables {{name}} and {{age}} located in the data.

# curl -X POST https://api.example.com/data \
#   -H "Content-Type: application/json" \
#   -d '{"name":"{{name}}","age":{{age}}}'

$sbCurl = New-Object Chilkat.StringBuilder
$sbCurl.AppendLn("curl -X POST https://api.example.com/data \`")
$sbCurl.AppendLn("  -H `"Content-Type: application/json`" \`")
$sbCurl.AppendLn("  -d '{`"name`":`"{{name}}`",`"age`":{{age}}}'")

$curl = New-Object Chilkat.HttpCurl

# Provide values for variables.
$curl.SetVar("name","Alice")
$curl.SetVar("age","30")

# To demonstrate how the variables are replaced, this example does not execute the curl command. 
# Instead, it generates the raw HTTP request that would be sent if the curl command were run.
$sbRawRequest = New-Object Chilkat.StringBuilder
$success = $curl.ToRawRequest($sbCurl.GetAsString(),$sbRawRequest)
if ($success -eq $false) {
    $($curl.LastErrorText)
    exit
}

$($sbRawRequest.GetAsString())

# Output:

# POST /data HTTP/1.1
# Host: api.example.com
# Content-Type: application/json
# Content-Length: 25
# 
# {"name":"Alice","age":30}

# --------------------------------------------------------------------------------------------------
# Note: Variable substitution in the request body can be turned off by 
# setting the EnableBodyVars property equal to $false

$curl.EnableBodyVars = $false

$success = $curl.ToRawRequest($sbCurl.GetAsString(),$sbRawRequest)
if ($success -eq $false) {
    $($curl.LastErrorText)
    exit
}

$($sbRawRequest.GetAsString())

# The raw request with body variable substitution disable:

# Host: api.example.com
# Content-Type: application/json
# Content-Length: 33
# 
# {"name":"{{name}}","age":{{age}}}