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* escape in json * Update CountingCsvWriter.scala * better design * rename * tests * fix test
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connector/src/main/scala/com/microsoft/kusto/spark/datasink/CountingCsvWriter.scala
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93 changes: 93 additions & 0 deletions
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connector/src/main/scala/com/microsoft/kusto/spark/datasink/Writers.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| package com.microsoft.kusto.spark.datasink | ||
|
|
||
| trait Writer { | ||
| val out: java.io.Writer | ||
| def write(c: Char): Unit | ||
| def write(str: String): Unit | ||
| def writeStringField(str: String): Unit | ||
| def writeUnescaped(str: String): Unit = { | ||
| out.write(str) | ||
| } | ||
| } | ||
|
|
||
| case class CountingWriter(out: java.io.Writer) extends Writer { | ||
| val newLineSep: String = java.security.AccessController.doPrivileged( | ||
| new sun.security.action.GetPropertyAction("line.separator")) | ||
| val newLineSepLength: Int = newLineSep.length | ||
| var bytesCounter: Long = 0L | ||
|
|
||
| def newLine(): Unit = { | ||
| out.write(newLineSep) | ||
| bytesCounter += newLineSepLength | ||
| } | ||
|
|
||
| def write(c: Char): Unit ={ | ||
| out.write(c) | ||
| bytesCounter += 1 | ||
| } | ||
| def write(str: String): Unit = { | ||
| out.write(str) | ||
| bytesCounter += str.length | ||
| } | ||
|
|
||
| def writeStringField(str: String) { | ||
| if (str.length > 0) { | ||
| out.write('"') | ||
| bytesCounter += 2 | ||
| for (c <- str) { | ||
| if (c == '"') { | ||
| out.write("\"\"") | ||
| bytesCounter += 1 | ||
| } else { | ||
| out.write(c) | ||
| } | ||
| } | ||
|
|
||
| out.write('"') | ||
| bytesCounter += str.length | ||
| } | ||
| } | ||
|
|
||
| def getCounter: Long = bytesCounter | ||
|
|
||
| def resetCounter(): Unit = { | ||
| bytesCounter = 0 | ||
| } | ||
| } | ||
|
|
||
| case class EscapedWriter(out: java.io.Writer) extends Writer { | ||
| def write(c: Char): Unit ={ | ||
| out.write(c) | ||
| } | ||
|
|
||
| def write(str: String): Unit ={ | ||
| for (c <- str) { | ||
| val escaped = EscapedWriter.escapeTable(c) | ||
| if (escaped != 0) { | ||
| out.write('\\') | ||
| out.write(escaped) | ||
| } else { | ||
| out.write(c) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| def writeStringField(str: String): Unit = { | ||
| if (str.length > 0) { | ||
| out.write('"') | ||
| write(str) | ||
| out.write('"') | ||
| } | ||
| } | ||
| } | ||
|
|
||
| object EscapedWriter { | ||
| val escapeTable: Array[Int] = Array.fill[Int](128)(0) | ||
| escapeTable('"') = '"' | ||
| escapeTable('\\') = '\\' | ||
| escapeTable('\n') = 'n' | ||
| escapeTable('\r') = 'r' | ||
| escapeTable('\b') = 'b' | ||
| escapeTable('\t') = 't' | ||
| escapeTable('\f') = 'f' | ||
| } |
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