有没有办法创建一个函数来改变基于数组的布尔值？

Question

我的脚本中有不同的安装提示，可以通过布尔值切换。我想将每个相应的布尔值放入像数组这样的容器数据类型中，以便我可以对它们进行分类和稍后修改。更具体地说，我想使用一个函数从 array/list 中修改我的布尔值。 我是否必须使用索引值或其他东西而不是可迭代值来修改项目 i ？提前致谢。

#!/bin/bash
# this is example code based off my installation script.
INSTALL_GIMP=0
INSTALL_KRITA=0
INSTALL_VLC=0
images_array=($INSTALL_GIMP $INSTALL_KRITA $INSTALL_VLC)

enabling_prompts() {
arg1=
for i in ${arg1[@]} ; do
    echo "$i"
    i=1
    echo "$i"
done
}
# ^ I want a function like this to change the given array's booleans to 1.
# I want to use modifiable arrays to make it easier when adding 
# -more categorized "programs" to the prompt script.

enabling_prompts $images_array

while [[ $INSTALL_GIMP == 1 ]]
do
echo "This is skeleton code. I need to change the values to 1 so that this code can be run."
done

Answer 1

您可以将布尔值存储到关联数组中，并在函数内通过引用访问该数组：

#!/usr/bin/env bash

# Associative array of boolean
declare -iA images_array=(
  ["gimp"]=0
  ["krita"]=0
  ["vlc"]=0
)

# The array name is passed by reference as argument 1
enabling_prompts() {
  # array is a reference name (Need Bash 4.2+)
  local -n array=""
  for prog in "${!array[@]}"; do
    printf -v prompt 'Install %s (Y)es|(N)o?\n' "$prog"
    while read -r -p "$prompt" answer; do
      case "$answer" in
        [yY])
          array["$prog"]=1
          break
          ;;
        [nN])
          break
          ;;
        *) :
          ;;
      esac
      :
    done
  done
}

# ^ I want a function like this to change the given array's booleans to 1.
# I want to use modifiable arrays to make it easier when adding 
# -more categorized "programs" to the prompt script.

enabling_prompts 'images_array'

for prog in "${!images_array[@]}"; do
  if [ "${images_array["$prog"]}" -eq 1 ]; then
    printf 'Installing %s...\n' "$prog"
  else
    printf '%s will not be installed!\n' "$prog"
  fi
done

有没有办法创建一个函数来改变基于数组的布尔值？

Is there a way to create a function that changes booleans values based off array?

bash

shell

for-loop

boolean

variable-assignment