[libeufin] branch master updated: Add helper function to chunk strings.

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marcello pushed a commit to branch master
in repository libeufin.

The following commit(s) were added to refs/heads/master by this push:
     new f1674d9  Add helper function to chunk strings.
f1674d9 is described below

commit f1674d9ca0f2cdf54531b766ab499a721dd867f9
Author: Marcello Stanisci <address@hidden>
AuthorDate: Fri Nov 8 17:57:40 2019 +0100

    Add helper function to chunk strings.
    
    Will be used to format the /keyletter.
---
 nexus/src/main/kotlin/Main.kt             | 55 +++++++++++++++++++++++++++++++
 nexus/src/test/kotlin/LetterFormatTest.kt | 13 ++++++++
 2 files changed, 68 insertions(+)

diff --git a/nexus/src/main/kotlin/Main.kt b/nexus/src/main/kotlin/Main.kt
index 3f1d9e7..4c8ef38 100644
--- a/nexus/src/main/kotlin/Main.kt
+++ b/nexus/src/main/kotlin/Main.kt
@@ -79,6 +79,35 @@ fun testData() {
     }
 }
 
+/**
+ * Inserts spaces every 2 characters.
+ */
+fun chunkString(input: String): String {
+
+    val ret = StringBuilder()
+    var columns = 0
+
+    for (i in input.indices) {
+
+        if ((i + 1).rem(2) == 0) {
+
+            if (columns == 7) {
+                ret.append(input[i] + "\n")
+                columns = 0
+                continue
+            }
+
+            ret.append(input[i] + " ")
+            columns++
+            continue
+        }
+        ret.append(input[i])
+    }
+
+    return ret.toString()
+
+}
+
 fun expectId(param: String?) : Int {
 
     try {
@@ -227,6 +256,32 @@ fun main() {
                 return@get
             }
 
+            get("/ebics/subscribers/{id}/keyletter") {
+
+                val id = expectId(call.parameters["id"])
+                val (signPub, authPub, encPub) = transaction {
+                    val subscriber = EbicsSubscriberEntity.findById(id) ?: 
throw SubscriberNotFoundError(HttpStatusCode.NotFound)
+
+                    val signPubTmp = CryptoUtil.getRsaPublicFromPrivate(
+                        
CryptoUtil.loadRsaPrivateKey(subscriber.signaturePrivateKey.toByteArray())
+                    )
+                    val authPubTmp = CryptoUtil.getRsaPublicFromPrivate(
+                        
CryptoUtil.loadRsaPrivateKey(subscriber.authenticationPrivateKey.toByteArray())
+                    )
+                    val encPubTmp = CryptoUtil.getRsaPublicFromPrivate(
+                        
CryptoUtil.loadRsaPrivateKey(subscriber.encryptionPrivateKey.toByteArray())
+                    )
+
+                    Triple(signPubTmp, authPubTmp, encPubTmp)
+                }
+
+                call.respondText(
+                    "Not implemented",
+                    ContentType.Text.Plain,
+                    HttpStatusCode.NotImplemented
+                )
+            }
+
             get("/ebics/subscribers") {
 
                 val ebicsSubscribers = transaction {
diff --git a/nexus/src/test/kotlin/LetterFormatTest.kt 
b/nexus/src/test/kotlin/LetterFormatTest.kt
new file mode 100644
index 0000000..f6a559c
--- /dev/null
+++ b/nexus/src/test/kotlin/LetterFormatTest.kt
@@ -0,0 +1,13 @@
+package tech.libeufin.nexus
+
+import org.junit.Test
+import tech.libeufin.sandbox.toHexString
+
+class LetterFormatTest {
+
+    @Test
+    fun chunkerTest() {
+        val blob = getNonce(1024)
+        println(chunkString(blob.toHexString()))
+    }
+}
\ No newline at end of file

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