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zsh-toggle.zsh
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zsh-toggle.zsh
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# ZSH-TOGGLE v1.0.0 - Toggles the value of an existing variable in a file
#
# In the file that contains the variable(s) that you want to toggle.
# The variable that you want to toggle should ...
# a) be on a line of its own.
# b) be only one of the following formats:
# - $MY_VAR="true" no export statement, double quotes
# - $MY_VAR='true' no export statement, single quotes.
# - $MY_VAR=true no export statement, no quotes.
# - export $MY_VAR="true" export statement, double quotes
# - export $MY_VAR='false' export statement, single quotes.
# - export $MY_VAR=false export statement, no quotes.
# c) be initialized with a value such as true|false, on|off, 1|0, yes|no John|Amy etc.
#
## ##
## ## ##
## ## ## ## ##
## ## ##
## ## ##
## ## ## ## ##
## ## ##
function zsh-toggle(){
if [[ -z "$1" || -z "$2" ]]; then
cat >&2 <<EOF
Usage:
zsh-toggles <bool export> <bool dquotes> <str var_name> <str value> <str alt_value> <str file_path>
exported: If the variable has an export statement or not
dquotes: If the value is wrapped in double or single quotes
var_name: The name of the variable
value: The value that the variable currently has
alt_value: The value that you want to switch back and forth to
f_path: The absolute path to the file containing the variable.
EOF
fi
# The variable you are toggling should be initialized in its
# file already with either VALUE or ALT_VALUE otherwise it won't work.
# For example if you set ...
# VALUE="yes"
# ALT_VALUE="no"
# ... then in the file @ FILE_PATH the variable should be initialized
# with either "yes" or "no". ex. MY_VAR="yes" or MY_VAR="no"
# The same with the other options too. If you set DQUOTES to true then the
# variable value should be wrapped in double quotes already in the file.
# Your basically describing the variable with these options
EXPORT="${1:-false}"
DQUOTES="${2:-true}"
VAR_NAME="$3"
VALUE="$4"
ALT_VALUE="$5"
FILE_PATH="${6}"
if [[ "$EXPORT" =~ true ]]; then
#////////////////// EXPORTED VARIABLES ex. export MY_VAR="true" //////////////
if [[ "$DQUOTES" =~ true ]]; then
function _toggle_${VAR_NAME}_() {
echo "function $0(){}"
local file="${FILE_PATH}"
local temp_file="${FILE_PATH}.tmp"
# Read the file and update the SUDO variable
while IFS= read -r line; do
if [[ $line =~ ^export\ ${VAR_NAME}= ]]; then
if [[ $line =~ export\ ${VAR_NAME}=\"${VALUE}\" ]]; then
line=${line/export\ ${VAR_NAME}=\"${VALUE}\"/export\ ${VAR_NAME}=\"${ALT_VALUE}\"}
elif [[ $line =~ export\ ${VAR_NAME}=\"${ALT_VALUE}\" ]]; then
line=${line/export\ ${VAR_NAME}=\"${ALT_VALUE}\"/export\ ${VAR_NAME}=\"${VALUE}\"}
fi
fi
echo "$line"
done < "$file" > "$temp_file"
# Replace the original file with the updated contents
mv "$temp_file" "$file"
}
_toggle_${VAR_NAME}_
#////////////////// EXPORTED VARIABLES ex. export MY_VAR='true' //////////////
elif [[ "$DQUOTES" =~ false ]]; then
function _toggle_${VAR_NAME}_() {
echo "function $0(){}"
local file="${FILE_PATH}"
local temp_file="${FILE_PATH}.tmp"
# Read the file and update the SUDO variable
while IFS= read -r line; do
if [[ $line =~ ^export\ ${VAR_NAME}= ]]; then
if [[ $line =~ export\ ${VAR_NAME}=\'${VALUE}\' ]]; then
line=${line/export\ ${VAR_NAME}=\'${VALUE}\'/export\ ${VAR_NAME}=\'${ALT_VALUE}\'}
elif [[ $line =~ export\ ${VAR_NAME}=\'${ALT_VALUE}\' ]]; then
line=${line/export\ ${VAR_NAME}=\'${ALT_VALUE}\'/export\ ${VAR_NAME}=\'${VALUE}\'}
fi
fi
echo "$line"
done < "$file" > "$temp_file"
# Replace the original file with the updated contents
mv "$temp_file" "$file"
}
_toggle_${VAR_NAME}_
#////////////////// VARIABLE ex. export MY_VAR=true //////////////
elif [[ "$DQUOTES" == "none" ]]; then
function _toggle_${VAR_NAME}_() {
echo "function $0(){}"
local file="${FILE_PATH}"
local temp_file="${FILE_PATH}.tmp"
# Read the file and update the SUDO variable
while IFS= read -r line; do
if [[ $line =~ ^export\ ${VAR_NAME}= ]]; then
if [[ $line =~ export\ ${VAR_NAME}=${VALUE} ]]; then
line=${line/export\ ${VAR_NAME}=${VALUE}/export\ ${VAR_NAME}=${ALT_VALUE}}
elif [[ $line =~ export\ ${VAR_NAME}=${ALT_VALUE} ]]; then
line=${line/export\ ${VAR_NAME}=${ALT_VALUE}/export\ ${VAR_NAME}=${VALUE}}
fi
fi
echo "$line"
done < "$file" > "$temp_file"
# Replace the original file with the updated contents
mv "$temp_file" "$file"
}
toggle_${VAR_NAME}_
fi
elif [[ "$EXPORT" =~ false ]]; then
#////////////////// VARIABLE ex. (MY_VAR="true") /////////////////////
if [[ "$DQUOTES" =~ true ]]; then
function toggle_${VAR_NAME}_() {
echo "function $0(){}"
local file="${FILE_PATH}"
local temp_file="${FILE_PATH}.tmp"
# Read the file and update the SUDO variable
while IFS= read -r line; do
if [[ $line =~ ^${VAR_NAME}= ]]; then
if [[ $line =~ ${VAR_NAME}=\"${VALUE}\" ]]; then
line=${line/${VAR_NAME}=\"${VALUE}\"/${VAR_NAME}=\"${ALT_VALUE}\"}
elif [[ $line =~ ${VAR_NAME}=\"${ALT_VALUE}\" ]]; then
line=${line/${VAR_NAME}=\"${ALT_VALUE}\"/${VAR_NAME}=\"${VALUE}\"}
fi
fi
echo "$line"
done < "$file" > "$temp_file"
# Replace the original file with the updated contents
mv "$temp_file" "$file"
}
toggle_${VAR_NAME}_
#////////////////// VARIABLE ex. MY_VAR='true' //////////////
elif [[ "$DQUOTES" =~ false ]]; then
function toggle_${VAR_NAME}_() {
echo "function $0(){}"
local file="${FILE_PATH}"
local temp_file="${FILE_PATH}.tmp"
# Read the file and update the SUDO variable
while IFS= read -r line; do
if [[ $line =~ ^${VAR_NAME}= ]]; then
if [[ $line =~ ${VAR_NAME}=\'${VALUE}\' ]]; then
line=${line/${VAR_NAME}=\'${VALUE}\'/${VAR_NAME}=\'${ALT_VALUE}\'}
elif [[ $line =~ ${VAR_NAME}=\'${ALT_VALUE}\' ]]; then
line=${line/${VAR_NAME}=\'${ALT_VALUE}\'/${VAR_NAME}=\'${VALUE}\'}
fi
fi
echo "$line"
done < "$file" > "$temp_file"
# Replace the original file with the updated contents
mv "$temp_file" "$file"
}
toggle_${VAR_NAME}_
#////////////////// VARIABLE ex. MY_VAR=true //////////////
elif [[ "$DQUOTES" == "none" ]]; then
function toggle_${VAR_NAME}_() {
echo "function $0(){}"
local file="${FILE_PATH}"
local temp_file="${FILE_PATH}.tmp"
# Read the file and update the SUDO variable
while IFS= read -r line; do
if [[ $line =~ ^${VAR_NAME}= ]]; then
if [[ $line =~ ${VAR_NAME}=${VALUE} ]]; then
line=${line/${VAR_NAME}=${VALUE}/${VAR_NAME}=${ALT_VALUE}}
elif [[ $line =~ ${VAR_NAME}=${ALT_VALUE} ]]; then
line=${line/${VAR_NAME}=${ALT_VALUE}/${VAR_NAME}=${VALUE}}
fi
fi
echo "$line"
done < "$file" > "$temp_file"
# Replace the original file with the updated contents
mv "$temp_file" "$file"
}
toggle_${VAR_NAME}_
fi
fi
}