git precommit hook for pontoco

gistfile1.txt

#!/bin/sh

# Called by "git commit" with no arguments.  The hook should
# exit with non-zero status after issuing an appropriate message if
# it wants to stop the commit.

branch="$(git rev-parse --abbrev-ref HEAD)"

# Reject commits to the main branch. You could still do this by forcing it,
# but in 99% of cases this is a mistake, especially for non-engineers.
if [ "$branch" = "main" ]; then
  echo "Error: You are currently on the 'main' branch."
  echo "You must create a new branch in Fork before making a commit."
  exit 1
fi

# Check for the edge case where this is the initial commit.
if git rev-parse --verify HEAD >/dev/null 2>&1
then
	against=HEAD
else
	# Initial commit: diff against an empty tree object
	against=$(git hash-object -t tree /dev/null)
fi

# Redirect output to stderr.
exec 1>&2

# Check for adding files with spaces in their path
# ================================================

# Grep over (A)dded and (R)enamed files looking for any space characters.
files_with_spaces=$(git diff --staged --name-only --diff-filter=AR $against | grep " ")
if [ "$files_with_spaces" ]
then
	cat <<- EOF
	Error: File and folder names cannot contain spaces. 

	Remove any spaces from these file paths and try the commit again:

	$files_with_spaces
	EOF
	exit 1
fi

# Check for non-LFS large files
# ==============================

LARGE_FILE_THRESHOLD_KB=5000

# Loop over staged files, filtered to only (A)dded, (M)odified, and (R)enamed files.
files_missing_lfs=$(git diff --staged --name-only --diff-filter=AMR $against | while read -r staged_file
do
	# Skip empty lines.
	if [ -z "$staged_file" ]
	then
		continue
	fi

	# Skip directories. These appear in diffs when submodules are changed.
	if [ -d "$staged_file" ]
	then
		continue
	fi

	# Skip '.unity' files, even though some of them are large.
	if [ "${staged_file##*.}" = "unity" ]
	then
		continue
	fi

	# Check that the disk size of the file is under the threshold.
	# There are more elegant ways to get file size, but this is the most portable.
	file_size_kb=$(ls -s -k "$staged_file" | cut -d ' ' -f 1)
	if [ $file_size_kb -lt $LARGE_FILE_THRESHOLD_KB ]
	then
		continue
	fi

	# For large files, check that the file has the 'filter' attribute set with the value 'lfs'.
	file_lfs_attr=$(git check-attr filter -- "$staged_file" | grep "filter: lfs")
	if [ -z "$file_lfs_attr" ]
	then
		echo "${staged_file} (${file_size_kb}kb)"
	fi
done)
if [ "$files_missing_lfs" ]
then
	cat <<- EOF
	Error: Large files must be tracked in LFS.

	The following files are over the 'large file' size (${LARGE_FILE_THRESHOLD_KB}kb) but are not tracked in LFS.

	$files_missing_lfs

	Run this command to track this file type in LFS, replacing 'ext' with the file extension:

	  git lfs track "*.ext"

	Then stage your files and the modified '.gitattributes' file and try the commit again.
	EOF
	exit 1
fi


# Check for invalid FBX files
# =============================
fbx_files=$(git diff --staged --name-only --diff-filter=AMR $against | grep -i "\.fbx$" | tr '\n' " ")

OSTYPE=$(uname | tr '[:upper:]' '[:lower:]')
if [ -n "$fbx_files" ]; then
	if echo "$OSTYPE" | grep -q "mingw"
		then
			./Tools/Hooks/fbx_sanitizer.exe $fbx_files
	elif echo "$OSTYPE" | grep -q "linux"
		then
			./Tools/Hooks/fbx_sanitizer_linux $fbx_files
	elif echo "$OSTYPE" | grep -q "darwin"
		then
			./Tools/Hooks/fbx_sanitizer_mac $fbx_files
	fi
fi