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Exclude all unicode line terminator characters from matching dot #5424

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merged 2 commits into from
May 6, 2022
Merged

Exclude all unicode line terminator characters from matching dot #5424

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0ea8380
Exclude all unicode line terminator characters from matching dot
anthony-chang May 4, 2022
c28bff3
Use existing terminatorChars seq, add unit tests
anthony-chang May 5, 2022
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3 changes: 2 additions & 1 deletion sql-plugin/src/main/scala/com/nvidia/spark/rapids/RegexParser.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -565,7 +565,8 @@ class CudfRegexTranspiler(mode: RegexMode) {
case RegexChar(ch) => ch match {
case '.' =>
// workaround for https://github.com/rapidsai/cudf/issues/9619
RegexCharacterClass(negated = true, ListBuffer(RegexChar('\r'), RegexChar('\n')))
val terminatorChars = ListBuffer('\r', '\n', '\u0085', '\u2028', '\u2029')
RegexCharacterClass(negated = true, terminatorChars.map(RegexChar))
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case '$' if mode == RegexSplitMode || mode == RegexReplaceMode =>
// see https://github.com/NVIDIA/spark-rapids/issues/4533
throw new RegexUnsupportedException("line anchor $ is not supported in split or replace")
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6 changes: 3 additions & 3 deletions tests/src/test/scala/com/nvidia/spark/rapids/RegularExpressionTranspilerSuite.scala
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Expand Up @@ -306,11 +306,11 @@ class RegularExpressionTranspilerSuite extends FunSuite with Arm {
"[0-9]{2}:[0-9]{2}:[0-9]{2})" +
"(.[1-9]*(?:0)?[1-9]+)?(.0*[1-9]+)?(?:.0*)?\\z"

// input and output should be identical except for `.` being replaced with `[^\r\n]` and
// `\z` being replaced with `$`
// input and output should be identical except for `.` being replaced
// with `[^\r\n\u0085\u2028\u2029]` and `\z` being replaced with `$`
doTranspileTest(TIMESTAMP_TRUNCATE_REGEX,
TIMESTAMP_TRUNCATE_REGEX
.replaceAll("\\.", "[^\r\n]")
.replaceAll("\\.", "[^\r\n\u0085\u2028\u2029]")
.replaceAll("\\\\z", "\\$"))
}

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