107 lines
2 KiB
Text
107 lines
2 KiB
Text
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#!/usr/bin/env bash
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set -euo pipefail
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QUOTES_FILE="${QUOTES_FILE:-$HOME/.local/share/os/quotes.txt}"
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usage() {
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cat <<'EOF'
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Usage: quotes.sh <command> [args]
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Commands:
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add <quote> <author> Add a quote as: quote {{ author }}
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today Print today's deterministic quote
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EOF
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}
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trim() {
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local value="$1"
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value="${value#"${value%%[![:space:]]*}"}"
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value="${value%"${value##*[![:space:]]}"}"
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printf '%s' "$value"
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}
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ensure_file() {
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mkdir -p "$(dirname "$QUOTES_FILE")"
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if [ ! -e "$QUOTES_FILE" ]; then
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touch "$QUOTES_FILE"
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fi
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}
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add_quote() {
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if [ "$#" -ne 2 ]; then
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echo 'Usage: quotes.sh add <quote> <author>' >&2
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exit 1
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fi
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ensure_file
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local quote author
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quote="$(trim "$1")"
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author="$(trim "$2")"
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if [ -z "$quote" ] || [ -z "$author" ]; then
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echo 'Quote and author must be non-empty' >&2
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exit 1
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fi
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if [[ "$quote" == *$'\n'* ]] || [[ "$author" == *$'\n'* ]]; then
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echo 'Quote and author must be single-line values' >&2
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exit 1
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fi
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if [ -s "$QUOTES_FILE" ] && [ "$(tail -c 1 "$QUOTES_FILE" 2>/dev/null || true)" != $'\n' ]; then
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printf '\n' >> "$QUOTES_FILE"
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fi
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printf '%s {{ %s }}\n' "$quote" "$author" >> "$QUOTES_FILE"
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}
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today_quote() {
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ensure_file
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local day hash
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day="$(date +%F)"
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hash="$(printf '%s' "$day" | cksum | awk '{print $1}')"
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awk -v hash="$hash" '
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NF { lines[count++] = $0 }
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END {
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if (count == 0) {
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exit 1
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}
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line = lines[hash % count]
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if (match(line, / \{\{ .* \}\}$/)) {
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quote = substr(line, 1, RSTART - 1)
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author = substr(line, RSTART)
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sub(/^ \{\{ /, "", author)
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sub(/ \}\}$/, "", author)
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printf "%s\n-- %s\n", quote, author
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} else {
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print line
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}
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}
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' "$QUOTES_FILE" || {
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echo "No quotes found in $QUOTES_FILE" >&2
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exit 1
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}
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}
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case "${1:-}" in
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add)
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shift
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add_quote "$@"
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;;
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today|daily)
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today_quote
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;;
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-h|--help|help)
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usage
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;;
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*)
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usage >&2
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exit 1
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;;
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esac
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