Create a Visual Studio Code "project" on the fly, given an executable, then launching the project

vscode.sh

#! /usr/bin/env bash

# DISCLAIMER:
#   This code IS WITHOUT ANY WARRANTY!
#   Use at own risk

FOLDER='.vscode'
LAUNCH_FILE='launch.json'
MAGIC_FILE='vscode_script'

function usage {
    echo "Usage: ./vscode.sh <executable> [options]"
    echo "  -a/--arg:   arguments to the executable"
    echo "  -e/--env:   environment variables for the executable"
    echo "  -c/--cwd:   current directory for the executable"
    exit 1
}

if [ "$1" == "" ]; then
    usage
fi


PROGRAM=$1
if [ ! -e $PROGRAM ]; then
    echo "File does not exist" $PROGRAM
    exit 1
fi

shift

ARGS=
ENV=
CWD="\${workspaceFolder}"
for i in "$@"
do
case $i in
    -a=*|--arg=*)
    ARGPREFIX=""
    if [ "$ARGS" != "" ]; then
        ARGPREFIX=","
    fi
    ARGS="${ARGS}${ARGPREFIX}\"${i#*=}\""
    ;;

    -e=*|--env=*)
    ARGPREFIX=""
    if [ "$ENV" != "" ]; then
        ARGPREFIX=","
    fi
    ENV="${ENV}${ARGPREFIX}\"${i#*=}\""
    ;;

    -c=*|--cwd=*)
    CWD="${i#*=}"
    ;;

    *)
    # unknown option
    ;;
esac
done

# In order to easily substitute variables, and also keeping the double quoted keys/values
read -r -d '' LAUNCH_JSON << EOM
{\n
\t// Use IntelliSense to learn about possible attributes.\n
\t// Hover to view descriptions of existing attributes.\n
\t// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387\n
\t"version": "0.2.0",\n
\t"configurations": [\n
\t\t{\n
\t\t\t"name": "${PROGRAM}",\n
\t\t\t"type": "cppdbg",\n
\t\t\t"request": "launch",\n
\t\t\t"program": "\${workspaceFolder}/${PROGRAM}",\n
\t\t\t"args": [${ARGS}],\n
\t\t\t"stopAtEntry": false,\n
\t\t\t"cwd": "${CWD}",\n
\t\t\t"environment": [${ENV}],\n
\t\t\t"externalConsole": false,\n
\t\t\t"MIMode": "lldb"\n
\t\t}\n
\t]\n
}\n
EOM

# In order to not overwrite an existing folder
if [ ! -d $FOLDER ]; then
    mkdir $FOLDER
    echo "magic" > $FOLDER/$MAGIC_FILE
    echo "Created $FOLDER directory"
fi
if [ ! -e $FOLDER/$MAGIC_FILE ]; then
    echo "Won't overwrite existing folder $FOLDER"
    exit 1
else
    echo -e $LAUNCH_JSON > ${FOLDER}/${LAUNCH_FILE}
    echo "Wrote ${FOLDER}/${LAUNCH_FILE}"
fi

if [ `uname` == "Darwin" ]; then
    open -a "/Applications/Visual Studio Code.app" .
fi