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5c369361b0
* fix: event stream with carriage return * lint: bazel --------- Co-authored-by: james-prysm <90280386+james-prysm@users.noreply.github.com>
37 lines
956 B
Go
37 lines
956 B
Go
package event
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import (
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"bytes"
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)
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// adapted from ScanLines in scan.go to handle carriage return characters as separators
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func scanLinesWithCarriage(data []byte, atEOF bool) (advance int, token []byte, err error) {
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if atEOF && len(data) == 0 {
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return 0, nil, nil
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}
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if i, j := bytes.IndexByte(data, '\n'), bytes.IndexByte(data, '\r'); i >= 0 || j >= 0 {
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in := i
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// Select the first index of \n or \r or the second index of \r if it is followed by \n
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if i < 0 || (i > j && i != j+1 && j >= 0) {
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in = j
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}
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// We have a full newline-terminated line.
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return in + 1, dropCR(data[0:in]), nil
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}
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// If we're at EOF, we have a final, non-terminated line. Return it.
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if atEOF {
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return len(data), dropCR(data), nil
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}
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// Request more data.
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return 0, nil, nil
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}
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// dropCR drops a terminal \r from the data.
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func dropCR(data []byte) []byte {
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if len(data) > 0 && data[len(data)-1] == '\r' {
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return data[0 : len(data)-1]
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}
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return data
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}
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