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Stylistic changes to currency (#99)

This commit is contained in:
Reto Kromer 2017-07-27 14:27:06 +02:00 committed by Alex Epstein
parent fc85d432bd
commit 642bfba164
1 changed files with 71 additions and 73 deletions
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144
currency/currency
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@ -9,26 +9,25 @@ configuredClient=""
## This function determines which http get tool the system has installed and returns an error if there isnt one ## This function determines which http get tool the system has installed and returns an error if there isnt one
getConfiguredClient() getConfiguredClient()
{ {
if command -v curl &>/dev/null ; then if command -v curl &>/dev/null; then
configuredClient="curl" configuredClient="curl"
elif command -v wget &>/dev/null ; then elif command -v wget &>/dev/null; then
configuredClient="wget" configuredClient="wget"
elif command -v fetch &>/dev/null ; then elif command -v fetch &>/dev/null; then
configuredClient="fetch" configuredClient="fetch"
else else
echo "Error: This tool reqires either curl, wget, or fetch to be installed." echo "Error: This tool reqires either curl, wget, or fetch to be installed."
return 1 return 1
fi fi
} }
## Allows to call the users configured client without if statements everywhere ## Allows to call the users configured client without if statements everywhere
httpGet() httpGet()
{ {
case "$configuredClient" in case "$configuredClient" in
curl) curl -A curl -s "$@";; curl) curl -A curl -s "$@" ;;
wget) wget -qO- "$@";; wget) wget -qO- "$@" ;;
fetch) fetch -o "...";; fetch) fetch -o "..." ;;
esac esac
} }
@ -40,7 +39,7 @@ checkValidCurrency()
&& $1 != "IDR" && $1 != "ILS" && $1 != "INR" && $1 != "JPY" && $1 != "KRW" \ && $1 != "IDR" && $1 != "ILS" && $1 != "INR" && $1 != "JPY" && $1 != "KRW" \
&& $1 != "MXN" && $1 != "MYR" && $1 != "NOK" && $1 != "NZD" && $1 != "PHP" \ && $1 != "MXN" && $1 != "MYR" && $1 != "NOK" && $1 != "NZD" && $1 != "PHP" \
&& $1 != "PLN" && $1 != "RON" && $1 != "RUB" && $1 != "SEK" && $1 != "SGD" \ && $1 != "PLN" && $1 != "RON" && $1 != "RUB" && $1 != "SEK" && $1 != "SGD" \
&& $1 != "THB" && $1 != "TRY" && $1 != "USD" && $1 != "ZAR" ]];then && $1 != "THB" && $1 != "TRY" && $1 != "USD" && $1 != "ZAR" ]]; then
echo "1" echo "1"
else else
echo "0" echo "0"
@ -54,19 +53,20 @@ getBase()
echo -n "What is the base currency: " echo -n "What is the base currency: "
read -r base read -r base
base=$(echo $base | tr /a-z/ /A-Z/) base=$(echo $base | tr /a-z/ /A-Z/)
if [[ $(checkValidCurrency $base) == "1" ]];then if [[ $(checkValidCurrency $base) == "1" ]]; then
unset base unset base
echo "Invalid base currency" echo "Invalid base currency"
getBase getBase
fi fi
} }
## Checks base currency from the user and validates it with all the possible currency ## Checks base currency from the user and validates it with all the possible currency
## types available on the API (requires argument) ## types available on the API (requires argument)
checkBase() checkBase()
{ {
base=$1 base=$1
base=$(echo $base | tr /a-z/ /A-Z/) base=$(echo $base | tr /a-z/ /A-Z/)
if [[ $(checkValidCurrency $base) == "1" ]];then if [[ $(checkValidCurrency $base) == "1" ]]; then
unset base unset base
echo "Invalid base currency" echo "Invalid base currency"
exit 1 exit 1
@ -80,7 +80,7 @@ getExchangeTo()
echo -n "What currency to exchange to: " echo -n "What currency to exchange to: "
read -r exchangeTo read -r exchangeTo
exchangeTo=$(echo $exchangeTo | tr /a-z/ /A-Z/) exchangeTo=$(echo $exchangeTo | tr /a-z/ /A-Z/)
if [[ $(checkValidCurrency $exchangeTo) == "1" ]];then if [[ $(checkValidCurrency $exchangeTo) == "1" ]]; then
echo "Invalid exchange currency" echo "Invalid exchange currency"
unset exchangeTo unset exchangeTo
getExchangeTo getExchangeTo
@ -93,7 +93,7 @@ checkExchangeTo()
{ {
exchangeTo=$1 exchangeTo=$1
exchangeTo=$(echo $exchangeTo | tr /a-z/ /A-Z/) exchangeTo=$(echo $exchangeTo | tr /a-z/ /A-Z/)
if [[ $(checkValidCurrency $exchangeTo) == "1" ]];then if [[ $(checkValidCurrency $exchangeTo) == "1" ]]; then
echo "Invalid exchange currency" echo "Invalid exchange currency"
unset exchangeTo unset exchangeTo
exit 1 exit 1
@ -136,14 +136,16 @@ checkInternet()
convertCurrency() convertCurrency()
{ {
exchangeRate=$(httpGet "http://api.fixer.io/latest?base=$base&symbols=$exchangeTo" | grep -Eo "[0-9]*[.][0-9]*") > /dev/null exchangeRate=$(httpGet "http://api.fixer.io/latest?base=$base&symbols=$exchangeTo" | grep -Eo "[0-9]*[.][0-9]*") > /dev/null
exchangeAmount=$(echo "$exchangeRate * $amount" | bc ) exchangeAmount=$(echo "$exchangeRate * $amount" | bc)
echo cat <<EOF
echo "========================="
echo "| $base to $exchangeTo" =========================
echo "| Rate: $exchangeRate" | $base to $exchangeTo
echo "| $base: $amount" | Rate: $exchangeRate
echo "| $exchangeTo: $exchangeAmount" | $base: $amount
echo "=========================" | $exchangeTo: $exchangeAmount
=========================
EOF
} }
update() update()
@ -156,10 +158,10 @@ update()
nameOfInstallFile="install.sh" # change this if the installer file has a different name be sure to include file extension if there is one nameOfInstallFile="install.sh" # change this if the installer file has a different name be sure to include file extension if there is one
latestVersion=$(httpGet https://api.github.com/repos/$githubUserName/$repositoryName/tags | grep -Eo '"name":.*?[^\\]",'| head -1 | grep -Eo "[0-9.]+" ) #always grabs the tag without the v option latestVersion=$(httpGet https://api.github.com/repos/$githubUserName/$repositoryName/tags | grep -Eo '"name":.*?[^\\]",'| head -1 | grep -Eo "[0-9.]+" ) #always grabs the tag without the v option
if [[ $currentVersion == "" || $repositoryName == "" || $githubUserName == "" || $nameOfInstallFile == "" ]];then if [[ $currentVersion == "" || $repositoryName == "" || $githubUserName == "" || $nameOfInstallFile == "" ]]; then
echo "Error: update utility has not been configured correctly." >&2 echo "Error: update utility has not been configured correctly." >&2
exit 1 exit 1
elif [[ $latestVersion == "" ]];then elif [[ $latestVersion == "" ]]; then
echo "Error: no active internet connection" >&2 echo "Error: no active internet connection" >&2
exit 1 exit 1
else else
@ -167,16 +169,16 @@ update()
echo "Version $latestVersion available" echo "Version $latestVersion available"
echo -n "Do you wish to update $repositoryName [Y/n]: " echo -n "Do you wish to update $repositoryName [Y/n]: "
read -r answer read -r answer
if [[ "$answer" == "Y" || "$answer" == "y" ]] ;then if [[ "$answer" == [Yy] ]]; then
cd ~ || { echo 'Update Failed' ; exit 1 ; } cd ~ || { echo 'Update Failed'; exit 1; }
if [[ -d ~/$repositoryName ]]; then rm -r -f $repositoryName || { echo "Permissions Error: try running the update as sudo"; exit 1; } ; fi if [[ -d ~/$repositoryName ]]; then rm -r -f $repositoryName || { echo "Permissions Error: try running the update as sudo"; exit 1; } ; fi
git clone "https://github.com/$githubUserName/$repositoryName" || { echo "Couldn't download latest version" ; exit 1; } git clone "https://github.com/$githubUserName/$repositoryName" || { echo "Couldn't download latest version"; exit 1; }
cd $repositoryName || { echo 'Update Failed' ; exit 1 ;} cd $repositoryName || { echo 'Update Failed' ; exit 1 ;}
git checkout "v$latestVersion" 2> /dev/null || git checkout "$latestVersion" 2> /dev/null || echo "Couldn't git checkout to stable release, updating to latest commit." git checkout "v$latestVersion" 2> /dev/null || git checkout "$latestVersion" 2> /dev/null || echo "Couldn't git checkout to stable release, updating to latest commit."
chmod a+x install.sh #this might be necessary in your case but wasnt in mine. chmod a+x install.sh #this might be necessary in your case but wasnt in mine.
./$nameOfInstallFile "update" || exit 1 ./$nameOfInstallFile "update" || exit 1
cd .. cd ..
rm -r -f $repositoryName || { echo "Permissions Error: update succesfull but cannot delete temp files located at ~/$repositoryName delete this directory with sudo"; exit 1; } rm -r -f $repositoryName || { echo "Permissions Error: update succesfull but cannot delete temp files located at ~/$repositoryName delete this directory with sudo"; exit 1; }
else else
exit 1 exit 1
fi fi
@ -184,60 +186,56 @@ update()
echo "$repositoryName is already the latest version" echo "$repositoryName is already the latest version"
fi fi
fi fi
} }
usage() usage()
{ {
echo "Currency" cat <<EOF
echo "Description: A realtime currency converter." Currency
echo " With no flags it will guide you through the currency exchange" Description: A realtime currency converter.
echo "Usage: currency or currency [flag] or currency [base] [exchangeTo] [amount]" With no flags it will guide you through the currency exchange
echo " -u Update Bash-Snippet Tools" Usage: currency or currency [flag] or currency [base] [exchangeTo] [amount]
echo " -h Show the help" -u Update Bash-Snippet Tools
echo " -v Get the tool version" -h Show the help
echo "Supported Currencies:" -v Get the tool version
echo " _______________________" Supported Currencies:
echo "| AUD | BGN | BRL | CAD |" _______________________
echo "| CHF | CNY | CZK | DKK |" | AUD | BGN | BRL | CAD |
echo "| EUR | GBP | HKD | HRK |" | CHF | CNY | CZK | DKK |
echo "| HUF | IDR | ILS | INR |" | EUR | GBP | HKD | HRK |
echo "| JPY | KRW | MXN | MYR |" | HUF | IDR | ILS | INR |
echo "| NOK | NZD | PHP | PLN |" | JPY | KRW | MXN | MYR |
echo "| RON | RUB | SEK | SGD |" | NOK | NZD | PHP | PLN |
echo "| THB | TRY | USD | ZAR |" | RON | RUB | SEK | SGD |
echo " _______________________" | THB | TRY | USD | ZAR |
echo "Examples:" _______________________
echo " currency EUR USD 12.35" Examples:
echo " currency" currency EUR USD 12.35
currency
EOF
} }
getConfiguredClient || exit 1 getConfiguredClient || exit 1
checkInternet || exit 1 # check if we have a valid internet connection if this isnt true the rest of the script will not work so stop here checkInternet || exit 1 # check if we have a valid internet connection if this isnt true the rest of the script will not work so stop here
while getopts "uvh" opt; do while getopts "uvh" opt; do
case $opt in case "$opt" in
\?) \?) echo "Invalid option: -$OPTARG" >&2
echo "Invalid option: -$OPTARG" >&2 exit 1
exit 1 ;;
;; h) usage
h) exit 0
usage ;;
exit 0 v) echo "Version $currentVersion"
;; exit 0
v) ;;
echo "Version $currentVersion" u) update
exit 0 exit 0
;; ;;
u) :) echo "Option -$OPTARG requires an argument." >&2
update exit 1
exit 0 ;;
;;
:)
echo "Option -$OPTARG requires an argument." >&2
exit 1
;;
esac esac
done done
@ -248,7 +246,7 @@ if [[ $# == 0 ]]; then
convertCurrency # grab the exhange rate and perform the conversion convertCurrency # grab the exhange rate and perform the conversion
exit 0 exit 0
elif [[ $# == "1" ]]; then elif [[ $# == "1" ]]; then
if [[ $1 == "update" ]];then if [[ $1 == "update" ]]; then
update update
elif [[ $1 == "help" ]]; then elif [[ $1 == "help" ]]; then
usage usage
@ -261,7 +259,7 @@ elif [[ $# == "2" ]]; then
echo "Not a valid argument" echo "Not a valid argument"
usage usage
exit 1 exit 1
elif [[ $# == "3" ]];then elif [[ $# == "3" ]]; then
checkBase $1 checkBase $1
checkExchangeTo $2 checkExchangeTo $2
checkAmount $3 checkAmount $3