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20 lines
397 B
Bash
20 lines
397 B
Bash
#!/usr/bin/env bash
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knoe_trim() {
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local s="${1:-}"
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# Trim leading/trailing whitespace without invoking external tools.
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s="${s#${s%%[![:space:]]*}}"
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s="${s%${s##*[![:space:]]}}"
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printf '%s' "$s"
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}
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knoe_normalize_realm() {
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local realm
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realm=$(knoe_trim "${1:-}")
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if [[ -z "$realm" ]]; then
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printf '%s' ""
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return 0
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fi
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printf '%s' "$realm" | tr '[:lower:]' '[:upper:]'
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}
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