Github user markap14 commented on a diff in the pull request: https://github.com/apache/nifi/pull/135#discussion_r50328396 --- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java --- @@ -198,23 +208,53 @@ private long countBytesToSplitPoint(final InputStream in, final OutputStream out return includeLineDelimiter ? bytesRead : bytesRead - 1; } - // keep track of what the last byte was that we read so that we can detect \r followed by some other + // keep track of what the last byte was that we read so that we can + // detect \r followed by some other // character. lastByte = nextByte; } } - private SplitInfo countBytesToSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines) throws IOException { + private SplitInfo readHeader(final int numHeaderLines, + final String headerMarker, final InputStream in, + final OutputStream out, final boolean keepAllNewLines) + throws IOException { SplitInfo info = new SplitInfo(); - - while (info.lengthLines < numLines) { - final long bytesTillNext = countBytesToSplitPoint(in, null, keepAllNewLines || (info.lengthLines != numLines - 1)); - if (bytesTillNext <= 0L) { - break; + boolean isHeaderLine = true; + + // Read numHeaderLines from file, if specificed; a non-zero value takes precedence + // over headerMarker character string + if (numHeaderLines > 0) { + for (int i = 0; i < numHeaderLines; i++) { + int bytesRead = readLine(in, out, keepAllNewLines); + if (bytesRead == 0) { + break; + } + info.lengthBytes += bytesRead; + info.lengthLines++; + } + // Else, keep reading all lines that begin with headerMarker character string + } else if (headerMarker != null) { + while (true) { + in.mark(0); --- End diff -- This call to in.mark(0) means that when in.reset() is called, we will reset back 0 bytes, essentially making the mark/reset do nothing. Not sure that I am following the logic here with how the mark/reset are being used.
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