fhueske commented on a change in pull request #6823: [FLINK-10134] UTF-16
support for TextInputFormat bug refixed
URL: https://github.com/apache/flink/pull/6823#discussion_r225533378
##########
File path:
flink-core/src/main/java/org/apache/flink/api/common/io/DelimitedInputFormat.java
##########
@@ -504,16 +533,119 @@ private void initBuffers() {
this.end = false;
}
+ /**
+ * Set file bom encoding.
+ *
+ * @param split
+ */
+ private void setBomFileCharset(FileInputSplit split) {
+ try {
+ String filePath = split.getPath().toString();
+ if (this.fileBomCharsetMap.containsKey(filePath)) {
+ this.bomCharset =
this.fileBomCharsetMap.get(filePath);
+ } else {
+ byte[] checkBytes = new byte[]{(byte) 0x00,
(byte) 0xFE, (byte) 0xFF, (byte) 0xEF, (byte) 0xBB, (byte) 0xBF};
+ byte[] bomBuffer = new byte[4];
+
+ if (this.splitStart != 0) {
Review comment:
I don't think it is necessary to optimize for special cases here. We can
just reset the stream to pos 0 and read the first four bytes.
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