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61 lines
1.6 KiB
Bash
Executable File
61 lines
1.6 KiB
Bash
Executable File
#!/bin/bash
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# === 配置部分 ===
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CACHE_FILE="$HOME/.cache/waybar-updates.json"
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# === 函数定义 ===
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generate_json() {
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local updates=$1
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local count
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if [ -z "$updates" ]; then
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count=0
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else
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count=$(echo "$updates" | wc -l)
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fi
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if [ "$count" -gt 0 ]; then
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local tooltip=$(echo "$updates" | awk '{printf "%s\\n", $0}' | sed 's/"/\\"/g' | head -c -2)
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printf '{"text": "%s", "alt": "has-updates", "tooltip": "%s"}\n' "$count" "$tooltip"
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else
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printf '{"text": "", "alt": "updated", "tooltip": "System is up to date"}\n'
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fi
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}
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# === 主逻辑 ===
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# 尝试获取更新
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# 捕获输出
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NEW_UPDATES=$(checkupdates 2>/dev/null)
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STATUS=$?
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# === 关键修正 ===
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# checkupdates 退出代码说明：
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# 0 = 有更新
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# 2 = 无更新 (这是正常情况，不是错误！)
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# 1 = 发生错误 (如网络断开、锁被占用)
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if [ $STATUS -eq 0 ]; then
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# --- 情况A：发现更新 ---
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OUTPUT=$(generate_json "$NEW_UPDATES")
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echo "$OUTPUT" > "$CACHE_FILE"
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echo "$OUTPUT"
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elif [ $STATUS -eq 2 ]; then
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# --- 情况B：正常运行，但没有更新 ---
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# 必须清空缓存或者写入 0 状态，而不是读取旧缓存
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OUTPUT=$(generate_json "")
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echo "$OUTPUT" > "$CACHE_FILE"
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echo "$OUTPUT"
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else
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# --- 情况C：真的出错了 (Exit 1) ---
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# 比如没网，或者 pacman 锁死
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# 只有这种时候才读取旧缓存来保底
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if [ -f "$CACHE_FILE" ]; then
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cat "$CACHE_FILE"
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else
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printf '{"text": "?", "alt": "updated", "tooltip": "Check failed"}\n'
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fi
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fi
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