pre-commit

#!/bin/bash

# Check PHP file $1 syntax and exit with exit code 1 if there are any errors
test_php_file_syntax() {
    if [[ "$1" =~ .(php|inc)$ ]] && ! php -l "$1" > /dev/null;
    then
        echo
        echo -e "\e[31mPHP syntax checker failed\e[0m"
        echo
        echo -e "\tFile: \e[34m$1\e[0m"
        echo
        echo -e "\tReason:"
        php -l "$1" | sed "s/^/\t\t/"
        echo
        exit 1
    fi
}

# Check for newly introduced PSR issues
test_php_psr() {
    if [[ "$1" =~ .(php|inc)$ ]]
    then
        git show HEAD:"$1" > /tmp/.test_file.php
        errors_before=$(phpcs /tmp/.test_file.php | egrep ' ERROR| WARNING' | wc -l)
        errors_after=$(phpcs "$1" | egrep ' ERROR| WARNING' | wc -l)
        if [[ $errors_after -gt $errors_before ]] 
        then
            echo
            echo -e "\e[31mPSR checker failed\e[0m"
            echo
            echo -e "\tFile: \e[34m$1\e[0m"
            echo -e "\tReason: you have introduced $(($errors_after-$errors_before)) new PSR problems"
            echo
        fi
    fi
}

# Check file $1 for words $2
test_words_existance() {
    if git diff --cached -U0 "$1" | grep -P '^[+-]' | grep -Ev '^(--- a/|\+\+\+ b/|-)' | grep -q "$2"
    then
        echo
        echo -e "\e[31mWords checker failed\e[0m"
        echo
        echo -e "\tFile: \e[34m$1\e[0m"
        echo -e "\tReason: has word \e[96m$2\e[0m in newly written code."
        echo
        git diff --cached -U0 "$1" | grep -P '^[+-]' | grep -Ev '^(--- a/|\+\+\+ b/|-)' | grep "$2" | sed "s/^/\t\t/" | cut -c 1-100
        echo
        if [ ! -z "$3" ]
        then
            exit 1
        fi
    fi
}

while read st file
do
    # skip deleted files
    if [ "$st" == 'D' ]
    then
        continue
    fi

    # Generic
    test_words_existance "$file" TODO
    test_words_existance "$file" FIXME
    test_words_existance "$file" XXX

    # PHP
    test_php_file_syntax "$file"
    test_php_psr "$file"
    test_words_existance "$file" var_dump fatal
    test_words_existance "$file" print_r fatal
    test_words_existance "$file" error_reporting fatal
    test_words_existance "$file" debug_backtrace fatal

    # JavaScript
    test_words_existance "$file" console.log fatal
    test_words_existance "$file" debugger fatal

    # Python
    test_words_existance "$file" set_trace fatal
    test_words_existance "$file" print
    test_words_existance "$file" pprint fatal
    test_words_existance "$file" __dict__ fatal

done < <(git diff --cached --name-status)