###############################################################################
#
# PHP Syntax Check for Git pre-commit hook for Windows PowerShell
#
# Author: Vojtech Kusy <wojtha@gmail.com>, Kyle Wiering <kyle.wiering@yahoo.com>
#
###############################################################################

### INSTRUCTIONS ###

# Place the code to file "pre-commit" (no extension) and add it to the one of
# the following locations:
# 1) Repository hooks folder - C:\Path\To\Repository\.git\hooks
# 2) User profile template   - C:\Users\<USER>\.git\templates\hooks
# 3) Global shared templates - C:\Program Files (x86)\Git\share\git-core\templates\hooks
#
# The hooks from user profile or from shared templates are copied from there
# each time you create or clone new repository.

### SETTINGS ###

# Path to the php.exe
$php_exe = "C:\Program Files (x86)\Zend\ZendServer\bin\php.exe";
# Extensions of the PHP files
$php_ext = "php|engine|theme|install|inc|module|test"
# Flag, if set to 1 git will unstage all files with errors, se to 0 to disable
$unstage_on_error = 0;

### FUNCTIONS ###

function php_syntax_check {
	param([string]$php_bin, [string]$extensions, [int]$reset)

	$err_counter = 0;

	write-host "Pre-commit PHP syntax check:" -foregroundcolor "white"

	git diff-index --name-only --cached HEAD -- | foreach {
		if ($_ -match ".*\.($extensions)$") {
			$file = $matches[0];
			If (Test-Path $file){
			  $errors = & $php_bin -d display_errors=On -l $file
				if ($errors -match "No syntax errors detected in $file") {
					write-host $file ": OK" -foregroundcolor "green"
				}
				else {
					write-host $file ":" $errors -foregroundcolor "red"
					if ($reset) {
						git reset -q HEAD $file
						write-host "Unstaging" $file "..." -foregroundcolor "magenta"
					}
					$err_counter++
				}
			}
			else {
				write-host $file ": OK" -foregroundcolor "green"
			}
		}
	}

	if ($err_counter -gt 0) {
	   exit 1
	}
}


php_syntax_check $php_exe $php_ext $unstage_on_error