mirror of
https://github.com/therootcompany/golib.git
synced 2026-11-04 15:05:00 +00:00
AJ ONeal
bb488fe230
Ensure cohort is never nil: - NewDomainSet stores an empty Cohort before rebuildCohort, so a parse failure leaves an empty (non-nil) cohort instead of nil - Contains uses CompareAndSwap to lazily self-initialise a zero-value struct, making nil impossible after first access — no explicit nil check needed Extract the cache-validity check into a testable cachedCohortValid() helper and add filesPresent() to detect when data files exist on disk. Use strings.Builder in commaify() for efficiency. Tests: - TestPrefixSetContainsZeroValue: zero-value self-heals via CAS, cohort is non-nil after first Contains call - TestCachedCohortValidRequiresFiles: cache invalidation logic
32 lines
456 B
Go
32 lines
456 B
Go
package ipgate
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import (
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"log/slog"
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"strconv"
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"strings"
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)
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func log() *slog.Logger { return slog.Default().WithGroup("ipgate") }
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func commaify(n int) string {
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s := strconv.Itoa(n)
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if n < 0 {
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return "-" + commaify(-n)
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}
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if len(s) <= 3 {
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return s
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}
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rem := len(s) % 3
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if rem == 0 {
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rem = 3
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}
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var out strings.Builder
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out.WriteString(s[:rem])
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for i := rem; i < len(s); i += 3 {
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out.WriteString("," + s[i:i+3])
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}
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return out.String()
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}
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