Lianja Requires Chilkat v11.5.0+

curl with Variable Substitution in an XML Request Body

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This example shows how to use variables inside an XML request body using the {{variable_name}} syntax. When the HTTP request’s Content-Type indicates XML, Chilkat automatically applies proper XML entity encoding to each substituted value, ensuring the resulting XML remains valid. Lianja

llSuccess = .F.

//  Variable names are enclosed between {{ and }}

//  curl -X POST https://api.example.com/api/orders \
//    -H "Content-Type: application/xml; charset=utf-8" \
//    -H "Accept: application/xml" \
//    -d '<order>
//    <customerName>{{customer_name}}</customerName>
//    <note>{{note}}</note>
//    <address>{{address}}</address>
//    <instructions>{{instructions}}</instructions>
//  </order>'

loSbCurl = createobject("CkStringBuilder")
loSbCurl.AppendLn('curl -X POST https://api.example.com/api/orders \")
loSbCurl.AppendLn('  -H "Content-Type: application/xml; charset=utf-8" \")
loSbCurl.AppendLn('  -H "Accept: application/xml" \")
loSbCurl.AppendLn("  -d '<order>")
loSbCurl.AppendLn("  <customerName>{{customer_name}}</customerName>")
loSbCurl.AppendLn("  <note>{{note}}</note>")
loSbCurl.AppendLn("  <address>{{address}}</address>")
loSbCurl.AppendLn("  <instructions>{{instructions}}</instructions>")
loSbCurl.AppendLn("</order>'")

loCurl = createobject("CkHttpCurl")

//  The values below contain chars that will require XML entity encoding.  
//  Chilkat will automatically do the encoding because the Content-Type of this request is "application/xml"
loCurl.SetVar("customer_name","John & Sons")
loCurl.SetVar("note",'He said "Ship it ASAP!"')
loCurl.SetVar("address","123 <Main> Street")
loCurl.SetVar("instructions","Use door #2 & call upon arrival")

//  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.
loSbRawRequest = createobject("CkStringBuilder")
llSuccess = loCurl.ToRawRequest(loSbCurl.GetAsString(),loSbRawRequest)
if (llSuccess = .F.) then
    ? loCurl.LastErrorText
    release loSbCurl
    release loCurl
    release loSbRawRequest
    return
endif

? loSbRawRequest.GetAsString()

//  The output is shown below.
//  Notice the chars that were XML entity encoded.

//  POST /api/orders HTTP/1.1
//  Accept: application/xml
//  Host: api.example.com
//  Content-Type: application/xml; charset=utf-8
//  Content-Length: 229
//  
//  <order>
//    <customerName>John &amp; Sons</customerName>
//    <note>He said &quot;Ship it ASAP!&quot;</note>
//    <address>123 &lt;Main&gt; Street</address>
//    <instructions>Use door #2 &amp; call upon arrival</instructions>
//  </order>


release loSbCurl
release loCurl
release loSbRawRequest