imay commented on a change in pull request #1451: Add string function split_part
URL: https://github.com/apache/incubator-doris/pull/1451#discussion_r301613106
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File path: be/src/exprs/string_functions.cpp
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@@ -761,4 +761,63 @@ StringVal StringFunctions::money_format(FunctionContext
*context, const LargeInt
return do_money_format(context, ss.str());
}
+static int index_of(const uint8_t* source, int sourceOffset, int sourceCount,
+ const uint8_t* target, int targetOffset, int targetCount,
+ int fromIndex) {
+ if (fromIndex >= sourceCount) {
+ return (targetCount == 0 ? sourceCount : -1);
+ }
+ if (fromIndex < 0) {
+ fromIndex = 0;
+ }
+ if (targetCount == 0) {
+ return fromIndex;
+ }
+ const uint8_t first = target[targetOffset];
+ int max = sourceOffset + (sourceCount - targetCount);
+ for (int i = sourceOffset + fromIndex; i <= max; i++) {
+ if (source[i] != first) { // Look for first character
+ while (++i <= max && source[i] != first);
+ }
Review comment:
you can merge if while to a while ?
```suggestion
while (i <= max && source[i] != first) i++;
```
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