nullkey
92d78dea72
text/ gh-style display-width string helpers (Truncate / FuzzyAgo / Pluralize)
compat/ server-CLI version skew probe (kubectl) + 24h TTL cache (gh internal/update)
acceptance/contract/ helpers_test.go for in-process cobra exec + golden assert
(uses iostreams.SetForTest singleton replacement; no t.Parallel)
cmdutil/errors.go: AllCodes() + ClassifyHTTPErrorOutputs() bridge for the
contract test suite (no behavior change in error handling)
go-runewidth promoted from indirect to direct (used by text.Truncate for
display-width-aware CJK truncation).
acceptance/contract/helpers_test.go forward-references cmd.NewRootCmd which
is exported in PR-7 — that file does not compile until then by design.
37 lines
828 B
Go
37 lines
828 B
Go
package text
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import "github.com/mattn/go-runewidth"
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const ellipsis = "…"
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// Truncate cuts s to at most maxWidth display columns (CJK / emoji 占 2 列;
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// ASCII 占 1 列), appending "…" if truncated. Mirrors gh
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// internal/text/text.go Truncate semantics — display width, not rune count.
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//
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// Edge cases:
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//
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// maxWidth ≤ 0 → ""
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// s 已 ≤ maxWidth → s 原样返回
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// ellipsis 占 1 列, 所以 truncate 时 budget = maxWidth - 1
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func Truncate(maxWidth int, s string) string {
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if maxWidth <= 0 {
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return ""
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}
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if runewidth.StringWidth(s) <= maxWidth {
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return s
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}
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if maxWidth == 1 {
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return ellipsis
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}
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budget := maxWidth - 1 // reserve for ellipsis
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w := 0
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for i, r := range s {
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rw := runewidth.RuneWidth(r)
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if w+rw > budget {
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return s[:i] + ellipsis
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}
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w += rw
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}
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return s + ellipsis
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}
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