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Adding the -r option to newton

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Alex Epstein 2017-07-28 00:22:47 -04:00
parent 621274906a
commit 92fa46ad9d
1 changed files with 14 additions and 7 deletions
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newton/newton
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@ -3,6 +3,7 @@
currentVersion="1.16.0" currentVersion="1.16.0"
configuredClient="" configuredClient=""
flagCount="0"
declare -a simpleOperations=(simplify factor derive integrate zeroes roots tangent area cos sin tan arccos arcsin arctan abs log) declare -a simpleOperations=(simplify factor derive integrate zeroes roots tangent area cos sin tan arccos arcsin arctan abs log)
## Allows to call the users configured client without if statements everywhere ## Allows to call the users configured client without if statements everywhere
@ -83,6 +84,7 @@ validateExpression()
originalExpression=$(echo $1 | sed "s/\[/\(/g" | sed "s/\]/\)/g") originalExpression=$(echo $1 | sed "s/\[/\(/g" | sed "s/\]/\)/g")
parsedExpression=$(echo $1 | sed "s/\[/\(/g" | sed "s/\]/\)/g" | grep -Eo "[0-9 + -- / * ^ . a-z A-Z ~ : ( ) ]*") parsedExpression=$(echo $1 | sed "s/\[/\(/g" | sed "s/\]/\)/g" | grep -Eo "[0-9 + -- / * ^ . a-z A-Z ~ : ( ) ]*")
if [[ "$parsedExpression" != "$originalExpression" ]];then { echo "Error: Expression contains invalid characters"; return 1; }; fi if [[ "$parsedExpression" != "$originalExpression" ]];then { echo "Error: Expression contains invalid characters"; return 1; }; fi
return 0
} }
encodeEquation() encodeEquation()
@ -119,12 +121,14 @@ printAnswer()
EOF EOF
} }
usage() usage()
{ {
cat <<EOF cat <<EOF
Newton Newton
Description: Performs numerical calculations all the way up to symbolic math parsing. Description: Performs numerical calculations all the way up to symbolic math parsing.
Usage: newton [operation] [expression] or newton [flag] Usage: newton [optionalFlags] [operation] [expression] or newton [flag]
-r Only print the result, useful for piping output elsewhere
-u Update Bash-Snippet Tools -u Update Bash-Snippet Tools
-h Show the help -h Show the help
-v Get the tool version -v Get the tool version
@ -163,7 +167,7 @@ EOF
checkInternet || exit 1 checkInternet || exit 1
getConfiguredClient || exit 1 getConfiguredClient || exit 1
while getopts "uvh" opt; do while getopts "ur:vh" opt; do
case "$opt" in case "$opt" in
\?) echo "Invalid option: -$OPTARG" >&2 \?) echo "Invalid option: -$OPTARG" >&2
exit 1 exit 1
@ -177,6 +181,7 @@ while getopts "uvh" opt; do
u) update u) update
exit 0 exit 0
;; ;;
r) resultOnly="true" && flagCount=$((flagCount + 1 ));;
:) echo "Option -$OPTARG requires an argument." >&2 :) echo "Option -$OPTARG requires an argument." >&2
exit 1 exit 1
;; ;;
@ -188,11 +193,13 @@ elif [[ $# == "1" ]]; then
if [[ $1 == "update" ]]; then update && exit 0 || exit 1 if [[ $1 == "update" ]]; then update && exit 0 || exit 1
elif [[ $1 == "help" ]]; then usage && exit 0 || exit 1 elif [[ $1 == "help" ]]; then usage && exit 0 || exit 1
else echo "Error: newton needs two arguments, operation and expression" && exit 1;fi else echo "Error: newton needs two arguments, operation and expression" && exit 1;fi
elif [ $# -gt 2 ];then echo "Error: newton only accepts two arguments, operation and expression" && exit 1;fi elif [ $# -gt 3 ];then echo "Error: newton only accepts two arguments, operation and expression" && exit 1;fi
validateOperation $1 || exit 1 if [[ $flagCount == "0" ]];then validateOperation $1 || exit 1
validateExpression $2 || exit 1 elif [[ $flagCount == "1" ]];then validateOperation $2 || exit 1; fi
encodeEquation $2 || exit 1 if [[ $flagCount == "0" ]];then validateExpression $2 && encodeEquation $2 || exit 1
elif [[ $flagCount == "1" ]];then validateExpression $3 && encodeEquation $3 || exit 1; fi
if [[ $opType == "simple" ]];then getSimpleResponse || exit 1;fi if [[ $opType == "simple" ]];then getSimpleResponse || exit 1;fi
printAnswer if [ -z $resultOnly ];then printAnswer
else echo $result; fi