bash:如何按名称字母对数组[id][name]进行排序或解析，以注入whiptail

Question

gitlab 上提供完整的脚本

当用steam-lr -g menu启动时，它显示用whiptail制作的菜单。此菜单中的项目按game id排序。

我的问题是：有办法通过game name订购吗

如何生成项目：

function build_gamemenu {
i=0
for f in ~/.steam/steam/steamapps/*.acf; do
game_name=$(cat $f | grep "name" | sed 's/.*"name"s*//;s/"//;s/"//')
game_id=$(cat $f | grep "appid" | sed 's/.*"appid"//;s/"//;s/"//;s/^[ t]*//')
gamemenu[i]="$game_id"
gamemenu[i+1]="$game_name"
((i+=2))
done
}

所列文件夹中的

• 文件名看起来像manifest_GAME_ID.acf(即：manifest_1234.acf(
• $game_id总是一个数字
• $game_name可能包含空格和特殊字符

如何将项目传递到whiptail：

function menu {
# (...)
game_id=$(whiptail --notags --backtitle "$version" --title "SteamLR" --menu "Select a game:" $w_h $w_w $w_l "${gamemenu[@]}" 2>&1 >/dev/tty)
# (...)
}

• ${gamemenu[@]}适当地生成$game_id "$game_name"的计算字符串。到目前为止，这是我找到的唯一途径

Answer 1

不要对数组使用数字索引；而是使用实际名称

这样，你就可以对你的名字进行带外排序，并在排序顺序上迭代。

# this is a little more precise than the cat | grep | sed hackery
extract_key() {
gawk -F'[[:space:]]' -v key=""$1"" '
BEGIN { FPAT = ""([^"]+)""; }
$1 == key {
if (substr($2, 1, 1) == """) {
$2 = substr($2, 2, length($2) - 2)
}
print $2
exit(0)
}
END { exit(1); }
'
}
die() { echo "$*" >&2; exit 1; }
build_gamemenu() {
declare -g -A game_ids=( )  # declare -A makes our array associative
local f name id             # this way we don't pollute global namespace
for f in ~/.steam/steam/steamapps/*.acf; do
name=$(extract_key name <"$f") || die "Could not find name for $f"
id=$(extract_key appid <"$f") || die "Could not find id for $f"
game_ids[$name]=$id
done
}
# note that readarray -d is only available in very new bash releases
# for older releases, instead you can use:
# sorted_names=( ); while IFS= read -r name; do sorted_names+=( "$name" ); done < <(...)
readarray -d '' sorted_names < <(printf '%s' "${!game_ids[@]}" | sort -z)
build_gamemenu

然后按名称打印我们的游戏：

for game_name in "${sorted_names[@]}"; do
game_id=${game_ids[$game_name]}
echo "$game_name [$game_id]"
done

或者，生成单个阵列以传递给whiptail:

whiptail_args=( )
for game_name in "${sorted_names[@]}"; do
game_id=${game_ids[$game_name]}
whiptail_args+=( "$game_id" "$game_name" )
done