#! /bin/bash

#

# This script checks if all added, copied, modified or renamed files are valid against the PSR2 coding standards

# and if there are no php, javascript or css errors

# dependencies:

# codesniffer (http://pear.php.net/package/PHP_CodeSniffer)

# esvalidate (https://github.com/duereg/esvalidate)

# CSS lint (https://github.com/stubbornella/csslint/wiki/Command-line-interface)

# SCSS lint (https://github.com/causes/scss-lint)

#

# @version 1.1.0

# @author Wouter Sioen <wouter.sioen@wijs.be>

# create empty errors array

declare -a errors

# Check if we're on a semi-secret empty tree

if git rev-parse --verify HEAD

then

against=HEAD

else

# Initial commit: diff against an empty tree object

against=4b825dc642cb6eb9a060e54bf8d69288fbee4904

fi

# fetch all changed php files and validate them

files=$(git diff-index --name-only --diff-filter=ACMR $against | grep '\.php$')

if [ -n "$files" ]; then

echo 'Checking PHP Files'

echo '------------------'

echo

for file in $files; do

# first check if they are valid php files

output=`php -l $file | grep 'Errors parsing'`

# if it did contain errors, we have output

if [ -n "$output" ]; then

echo "$file contains php syntax errors"

errors=("${errors[@]}" "$output")

fi

# checks if the phpcs output contains '| ERROR |'

output=`phpcs --standard=PSR2 --extensions=php --encoding=utf8 --report=full $file | grep '| ERROR |'`

# if it did contain errors, we have output

if [ -n "$output" ]; then

echo "$file fails coding standards"

phpcs --standard=PSR2 --extensions=php --encoding=utf8 --report=full $file

errors=("${errors[@]}" "$output")

fi

done

fi

# fetch all changed js files and validate them

files=$(git diff-index --name-only --diff-filter=ACMR $against | grep '\.js$')

if [ -n "$files" ]; then

echo

echo 'Checking Javascript Files'

echo '------------------'

echo

for file in $files; do

output=`esvalidate $file`

# if our output is not empty, there were errors

if [ -n "$output" ]; then

echo "$file contains javascript syntax errors"

echo $output

errors=("${errors[@]}" "$output")

fi

done

fi

# fetch all changed css files and validate them

files=$(git diff-index --name-only --diff-filter=ACMR $against | grep '\.css$')

if [ -n "$files" ]; then

echo

echo 'Checking CSS Files'

echo '------------------'

echo

for file in $files; do

output=`csslint --format=compact $file | grep 'Error -'`

# if our output is not empty, there were errors

if [ -n "$output" ]; then

echo "$file contains css syntax errors"

echo $output

errors=("${errors[@]}" "$output")

fi

done

fi

# fetch all changed css files and validate them

files=$(git diff-index --name-only --diff-filter=ACMR $against | grep -E '\.s(c|a)ss$')

if [ -n "$files" ]; then

echo

echo 'Checking SCSS Files'

echo '------------------'

echo

for file in $files; do

output=`scss-lint $file | grep '\[E\]'`

# if our output is not empty, there were errors

if [ -n "$output" ]; then

echo "$file contains scss syntax errors"

scss-lint $file | grep '\[E\]'

errors=("${errors[@]}" "$output")

fi

done

fi

# if we have errors, exit with 1

if [ -n "$errors" ]; then

exit 1

fi

echo '🍺 No errors found!'