DenozordecandCursor
b963311b43
Keyset по id/ord вместо OFFSET; anti-join для RevisionDiff. Co-authored-by: Cursor <[email protected]>
31 lines
770 B
Go
31 lines
770 B
Go
package store
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import (
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"strconv"
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"strings"
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)
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// ParsePrefixPageCursor decodes opaque cursors for revision prefix pagination.
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func ParsePrefixPageCursor(cursor string) (afterID *int64, offset int, useOffset bool) {
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cursor = strings.TrimSpace(cursor)
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if cursor == "" {
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return nil, 0, false
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}
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if strings.HasPrefix(cursor, "o:") {
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n, err := strconv.Atoi(strings.TrimPrefix(cursor, "o:"))
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if err != nil || n < 0 {
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return nil, 0, false
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}
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return nil, n, true
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}
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if n, err := strconv.ParseInt(cursor, 10, 64); err == nil && n >= 0 {
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return &n, 0, false
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}
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return nil, 0, false
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}
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// FormatPrefixPageCursor encodes the keyset cursor (last row id or slice index).
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func FormatPrefixPageCursor(lastID int64) string {
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return strconv.FormatInt(lastID, 10)
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}
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