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cmd/bsdaily/main.go now only passes Version to cli.Main and exits with the status it returns, as REPO_POLICIES.md requires of cmd/. The cobra command, the flag rules and the date parsing moved unchanged into internal/cli, so flags, help text, error messages, exit status and the first log line stay as they were. The fallback to dev for an empty version moved with them into cli.Main. parseTargetDates is exported as ParseTargetDates so that a table test outside the package can reach it; the test never touches the filesystem or runs the extraction. README describes the new layout and TODO.md records the step. Model: opus-5-5 Co-authored-by: clawbot <sneak+clawbot@sneak.cloud>
75 lines
1.7 KiB
Go
75 lines
1.7 KiB
Go
package cli
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import (
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"errors"
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"fmt"
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"time"
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)
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var (
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errDateExclusive = errors.New("--date and --from/--to are mutually exclusive")
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errFromRequiresTo = errors.New("--from requires --to")
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errToRequiresFrom = errors.New("--to requires --from")
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errFromAfterTo = errors.New("is after --to")
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)
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// ParseTargetDates turns the --date, --from and --to flags into the days
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// to extract. It returns nil when none of them is set, which bsdaily.Run
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// takes to mean the snapshot date minus one day.
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func ParseTargetDates(dateFlag, fromFlag, toFlag string) ([]time.Time, error) {
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hasDate := dateFlag != ""
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hasFrom := fromFlag != ""
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hasTo := toFlag != ""
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// Validate mutual exclusivity
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if hasDate && (hasFrom || hasTo) {
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return nil, errDateExclusive
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}
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if hasFrom != hasTo {
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if hasFrom {
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return nil, errFromRequiresTo
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}
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return nil, errToRequiresFrom
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}
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if hasDate {
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t, err := time.Parse("2006-01-02", dateFlag)
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if err != nil {
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return nil, fmt.Errorf(
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"invalid --date %q (expected YYYY-MM-DD): %w", dateFlag, err)
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}
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return []time.Time{t}, nil
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}
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if !hasFrom {
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return nil, nil
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}
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from, err := time.Parse("2006-01-02", fromFlag)
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if err != nil {
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return nil, fmt.Errorf(
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"invalid --from %q (expected YYYY-MM-DD): %w", fromFlag, err)
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}
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to, err := time.Parse("2006-01-02", toFlag)
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if err != nil {
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return nil, fmt.Errorf(
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"invalid --to %q (expected YYYY-MM-DD): %w", toFlag, err)
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}
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if from.After(to) {
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return nil, fmt.Errorf("--from %s %w %s", fromFlag, errFromAfterTo, toFlag)
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}
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var targetDates []time.Time
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for d := from; !d.After(to); d = d.AddDate(0, 0, 1) {
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targetDates = append(targetDates, d)
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}
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return targetDates, nil
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}
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