~修复和优化curl进度条显示功能

scripts/libs/web_get_curlbar.sh

@@ -0,0 +1,47 @@
+
+bar_max=42 #进度条长度
+
+curl_fsize(){ # 获取文件大小
+	fsize_raw=0
+	header=$(curl -sIL --connect-timeout 2 "$url")
+	# 代理容错
+	[ -z "$header" ] && { export https_proxy=""; export http_proxy=""; header=$(curl -sIL --connect-timeout 2 "$url"); }
+	# 提取大小 (优先 Content-Length，其次 ETag)
+	fsize_raw=$(echo "$header" | grep -i 'Content-Length' | tail -n 1 | awk '{print $2}' | tr -d '\r' | awk '{print int($1)}')
+	if [ -z "$fsize_raw" ] || [ "$fsize_raw" -eq 0 ]; then
+		etag=$(echo "$header" | grep -i 'etag' | tail -n 1 | cut -d '"' -f2 | cut -d '-' -f1)
+		[ -n "$etag" ] && fsize_raw=$(printf "%d" 0x$etag 2>/dev/null)
+	fi
+}
+
+execute_curl(){ # 手搓curl进度条
+	local path="$1" target_url="$2" total_size="$3" extra_args="$4"
+	rm -f /tmp/webget_res
+	# 后台静默下载，状态码写入临时文件
+	curl $extra_args -s -L -w '%{http_code}' "$target_url" -o "$path" > /tmp/webget_res &
+	local pid=$!
+	
+	# 循环监控
+	while kill -0 $pid 2>/dev/null; do
+		if [ -f "$path" ]; then
+			local curr=$(wc -c < "$path")
+			local pct=$(awk -v c=$curr -v t=$total_size 'BEGIN {p=(c*100/t); if(p>100)p=100; printf "%.1f", p}')
+			local num=$(awk -v p=$pct -v w=$bar_max 'BEGIN {printf "%d", p*w/100}')
+			local bar=$(printf "%${num}s" | tr ' ' '#'); local spc_n=$((bar_max - num))
+			local spc=""; [ "$spc_n" -gt 0 ] && spc=$(printf "%${spc_n}s")
+			local size=$(( fsize_raw * 100 / 1048576 ))
+			local fs="$((size / 100)).$((size % 100)) MB"
+			printf "\r\033[2K%s%s %6s%%(%s)" "$bar" "$spc" "$pct" "$fs" >&2
+		fi
+		usleep 200000 2>/dev/null || sleep 1
+	done
+	
+	local code=$(cat /tmp/webget_res 2>/dev/null)
+	if [ "$code" = "200" ] || [ "$code" = "206" ]; then
+		local full=$(printf "%${bar_max}s" | tr ' ' '#')
+		printf "\r\033[2K%s 100.0%%(%s)\n" "$full" "$fs" >&2
+	else
+		printf "\r\033[2K" >&2; [ -f "$path" ] && rm -f "$path"
+	fi
+	echo "$code"
+}