Save autorun for Atom Editor C++

.autocompile.sh

#/bin/bash

# kill current running processes first
kill $(ps -ax | grep "$(cat test.runformat)" | awk '{print $1;}' | paste -sd " " -) 2>> /dev/null &

echo "Running $0"

# compile first if argument is supplied
if [ $# -eq 1 ]; then
    # compile and run file
    export fullpath=$1
    export pathpath=$(basename $fullpath)
    export extension="${pathpath##*.}"
    export filename="$(basename $fullpath .$extension)"
    echo "Compiling..." > test-preview.out
    echo "$filename" > test.filename
    if [ "$extension" == "cpp" ]; then
        echo './a.out' > test.runformat
        $($(g++ -Wall -O2 "$1" && echo '[C++98]' > test.format) || $(g++ -std=c++11 -O2 $1 && echo '[C++11]' > test.format))
        exec bash $0
    elif [ "$extension" == "java" ]; then
        echo '[Java]' > test.format
        echo "java $(cat test.filename)" > test.runformat
        javac "$fullpath" 2>> test-preview.out
        exec bash $0
    elif [ "$extension" == "python" ]; then
        echo '[Python]' > test.format
        echo "python -m py_compile $(cat test.filename).py" > test.runformat
        exec bash $0
    else
        echo '[Format unspecified]' > test.format
    fi
else
    # run
    cat test.format > test-preview.out
    echo "Running... " >> test-preview.out
    export TIMEOUT=5
    export MAX_LINES=100
    (time ( $(timeout --foreground $TIMEOUT $(cat test.runformat) < test.in > test.out) || printf "TLE: " >> test-preview.out) ) 2>&1 | grep real | awk '{print $2;}' >> test-preview.out
    a=$(wc -l < test.out)
    b=$MAX_LINES
    min=$([ $a -le $MAX_LINES ] && echo "$a" || echo "$b")
    mb=$(ls -sh test.out | cut -d' ' -f1)
    echo "----- test.out [${mb}B, $min/$a lines] -----" >> test-preview.out
    cat test.out | head --lines=$MAX_LINES >> test-preview.out
fi

.save.cson

"**/*.cpp": "bash .autocompile.sh ${file}"
"**/*.java": "bash .autocompile.sh ${file}"
"**/*.py": "bash .autocompile.sh ${file}"
"**/test.in": "bash .autocompile.sh"

small_buffer.cpp

#include <iostream>
#include <cstdlib>
using namespace std;

int main(int argc, char **args) {
    int max_lines = 1000;
    if (argc > 1) max_lines = atoi(args[1]);
    string line;
    while (getline(cin, line) && max_lines-- > 0)
        cout << line << endl;
    if (max_lines < 0)
        cout << "..." << endl;
}