pre-commit.sample

#!/bin/bash

#
# This script checks for errors in whitespace and also untracked files and loose print statements.
# It helps to keep the git diffs clean by not comparing spurious whitespaces.
#

# Change this to a space-delimited list of dirs in the top level of your project that contain
# code to be checked.
CODE_DIRS="data horton doc scripts tools"

## Nothing to change below this line ##

red="\033[1;31m"
color_end="\033[0m"

# Check unwanted trailing whitespace or space/tab indents;
if [[ `git diff --cached --check` ]]; then
    echo -e "${red}Commit failed: trailing whitespace, trailing empty lines, DOS/Windows line endings${color_end}"
    git diff --cached --check
    exit 1
fi

# Check for untracked files (not in .gitignore)
if [[ `git status -u ${CODE_DIRS} -s | grep "^??"` ]]; then
    echo -e "${red}Commit failed: untracked files (not in .gitignore).${color_end}"
    git status -u ${CODE_DIRS} -s | grep "^??"
    exit 1
fi

# Check for new print statements
if [[ `git diff --cached | grep '^+' | sed  's/^.//' | sed 's:#.*$::g' | grep 'print '` ]]; then
    echo -e "${red}Commit failed: print statements${color_end}"
    git diff --cached | grep '^+' | sed  's/^.//' | sed 's:#.*$::g' | grep print
    exit 1
fi