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feat: add built-in function to encode a string as base64 #847

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merged 4 commits into from
May 7, 2024
Merged

feat: add built-in function to encode a string as base64 #847

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71c3e99
feat: add built-in function to encode a string as base64
sbuettner May 6, 2024
8daac80
Update src/test/scala/org/camunda/feel/impl/builtin/BuiltinStringFunc…
sbuettner May 7, 2024
32e3fbc
Rename to "to base64"
sbuettner May 7, 2024
cdc515a
test: Rename test group
saig0 May 7, 2024
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16 changes: 14 additions & 2 deletions src/main/scala/org/camunda/feel/impl/builtin/StringBuiltinFunctions.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,8 @@ package org.camunda.feel.impl.builtin
import com.fasterxml.uuid.{EthernetAddress, Generators}
import org.camunda.feel.impl.builtin.BuiltinFunction.builtinFunction
import org.camunda.feel.syntaxtree.{ValBoolean, ValError, ValList, ValNumber, ValString}

import java.util.Base64
import java.nio.charset.StandardCharsets
import java.util.regex.Pattern
import scala.util.Try

Expand All @@ -42,7 +43,8 @@ object StringBuiltinFunctions {
"split" -> List(splitFunction),
"extract" -> List(extractFunction),
"trim" -> List(trimFunction),
"uuid" -> List(uuidFunction)
"uuid" -> List(uuidFunction),
"to base64" -> List(toBase64Function)
)

private def substringFunction = builtinFunction(
Expand Down Expand Up @@ -274,4 +276,14 @@ object StringBuiltinFunctions {
ValString(generator.generate.toString())
}
)

private def toBase64Function =
builtinFunction(
params = List("value"),
invoke = { case List(ValString(value)) =>
val bytes = value.getBytes(StandardCharsets.UTF_8)
ValString(Base64.getEncoder.encodeToString(bytes))
}
)

}
7 changes: 7 additions & 0 deletions src/test/scala/org/camunda/feel/impl/builtin/BuiltinStringFunctionsTest.scala
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Expand Up @@ -173,4 +173,11 @@ class BuiltinStringFunctionsTest extends AnyFlatSpec with Matchers with FeelInte

eval(" string length(uuid()) ") should be(ValNumber(36))
}

"A to base64() function" should "return a string encoded as base64" in {

eval(""" to base64("FEEL") """) should be(ValString("RkVFTA=="))

eval(""" to base64(value: "Camunda") """) should be(ValString("Q2FtdW5kYQ=="))
}
}