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Add PSR-4 class loader. (tests needed)

pull/2459/head
Andreas Hennings 2013-07-26 22:31:06 +02:00
parent 10f8e564bb
commit 8142126b16
1 changed files with 102 additions and 36 deletions
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138
src/Composer/Autoload/ClassLoader.php
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@ -42,19 +42,26 @@ namespace Composer\Autoload;
*/ */
class ClassLoader class ClassLoader
{ {
private $prefixes = array(); // PSR-4
private $fallbackDirs = array(); private $prefixLengthsPsr4 = array();
private $prefixDirsPsr4 = array();
private $fallbackDirsPsr4 = array();
// PSR-0
private $prefixesPsr0 = array();
private $fallbackDirsPsr0 = array();
private $useIncludePath = false; private $useIncludePath = false;
private $classMap = array(); private $classMap = array();
public function getPrefixes() public function getPrefixes()
{ {
return call_user_func_array('array_merge', $this->prefixes); return call_user_func_array('array_merge', $this->prefixesPsr0);
} }
public function getFallbackDirs() public function getFallbackDirs()
{ {
return $this->fallbackDirs; return $this->fallbackDirsPsr0;
} }
public function getClassMap() public function getClassMap()
@ -85,13 +92,13 @@ class ClassLoader
{ {
if (!$prefix) { if (!$prefix) {
if ($prepend) { if ($prepend) {
$this->fallbackDirs = array_merge( $this->fallbackDirsPsr0 = array_merge(
(array) $paths, (array) $paths,
$this->fallbackDirs $this->fallbackDirsPsr0
); );
} else { } else {
$this->fallbackDirs = array_merge( $this->fallbackDirsPsr0 = array_merge(
$this->fallbackDirs, $this->fallbackDirsPsr0,
(array) $paths (array) $paths
); );
} }
@ -100,19 +107,58 @@ class ClassLoader
} }
$first = $prefix[0]; $first = $prefix[0];
if (!isset($this->prefixes[$first][$prefix])) { if (!isset($this->prefixesPsr0[$first][$prefix])) {
$this->prefixes[$first][$prefix] = (array) $paths; $this->prefixesPsr0[$first][$prefix] = (array) $paths;
return; return;
} }
if ($prepend) { if ($prepend) {
$this->prefixes[$first][$prefix] = array_merge( $this->prefixesPsr0[$first][$prefix] = array_merge(
(array) $paths, (array) $paths,
$this->prefixes[$first][$prefix] $this->prefixesPsr0[$first][$prefix]
); );
} else { } else {
$this->prefixes[$first][$prefix] = array_merge( $this->prefixesPsr0[$first][$prefix] = array_merge(
$this->prefixes[$first][$prefix], $this->prefixesPsr0[$first][$prefix],
(array) $paths
);
}
}
public function addPsr4($prefix, $paths, $prepend = false)
{
if (!$prefix) {
if ($prepend) {
$this->fallbackDirsPsr4 = array_merge(
(array) $paths,
$this->fallbackDirsPsr4
);
} else {
$this->fallbackDirsPsr4 = array_merge(
$this->fallbackDirsPsr4,
(array) $paths
);
}
return;
}
$prefix = rtrim($prefix, '\\');
$prefix = $prefix . '\\';
if (!isset($this->prefixDirsPsr4[$prefix])) {
$this->prefixLengthsPsr4[$prefix[0]][$prefix] = strlen($prefix);
$this->prefixDirsPsr4[$prefix] = (array) $paths;
return;
}
if ($prepend) {
$this->prefixDirsPsr4[$prefix] = array_merge(
(array) $paths,
$this->prefixDirsPsr4[$prefix]
);
} else {
$this->prefixDirsPsr4[$prefix] = array_merge(
$this->prefixDirsPsr4[$prefix],
(array) $paths (array) $paths
); );
} }
@ -127,11 +173,11 @@ class ClassLoader
public function set($prefix, $paths) public function set($prefix, $paths)
{ {
if (!$prefix) { if (!$prefix) {
$this->fallbackDirs = (array) $paths; $this->fallbackDirsPsr0 = (array) $paths;
return; return;
} }
$this->prefixes[substr($prefix, 0, 1)][$prefix] = (array) $paths; $this->prefixesPsr0[substr($prefix, 0, 1)][$prefix] = (array) $paths;
} }
/** /**
@ -206,38 +252,58 @@ class ClassLoader
return $this->classMap[$class]; return $this->classMap[$class];
} }
if (false !== $pos = strrpos($class, '\\')) { $logicalPathPsr4 = strtr($class, '\\', DIRECTORY_SEPARATOR) . '.php';
// namespaced class name
$classPath = strtr(substr($class, 0, $pos), '\\', DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;
$className = substr($class, $pos + 1);
} else {
// PEAR-like class name
$classPath = null;
$className = $class;
}
$classPath .= strtr($className, '_', DIRECTORY_SEPARATOR) . '.php';
$first = $class[0]; $first = $class[0];
if (isset($this->prefixes[$first])) { if (isset($this->prefixLengthsPsr4[$first])) {
foreach ($this->prefixes[$first] as $prefix => $dirs) { foreach ($this->prefixLengthsPsr4[$first] as $prefix => $length) {
if (0 === strpos($class, $prefix)) { if (0 === strpos($class, $prefix)) {
foreach ($dirs as $dir) { foreach ($this->prefixDirsPsr4[$prefix] as $dir) {
if (file_exists($dir . DIRECTORY_SEPARATOR . $classPath)) { if (file_exists($file = $dir . DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $length))) {
return $dir . DIRECTORY_SEPARATOR . $classPath; return $file;
} }
} }
} }
} }
} }
foreach ($this->fallbackDirs as $dir) { foreach ($this->fallbackDirsPsr4 as $dir) {
if (file_exists($dir . DIRECTORY_SEPARATOR . $classPath)) { if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr4)) {
return $dir . DIRECTORY_SEPARATOR . $classPath; return $file;
} }
} }
if ($this->useIncludePath && $file = stream_resolve_include_path($classPath)) { if (false !== $pos = strrpos($class, '\\')) {
// namespaced class name
$logicalPathPsr0
= substr($logicalPathPsr4, 0, $pos + 1)
. strtr(substr($logicalPathPsr4, $pos + 1), '_', DIRECTORY_SEPARATOR)
;
} else {
// PEAR-like class name
$logicalPathPsr0 = strtr($class, '_', DIRECTORY_SEPARATOR);
}
$first = $class[0];
if (isset($this->prefixesPsr0[$first])) {
foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) {
if (0 === strpos($class, $prefix)) {
foreach ($dirs as $dir) {
if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
return $file;
}
}
}
}
}
foreach ($this->fallbackDirsPsr0 as $dir) {
if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
return $file;
}
}
if ($this->useIncludePath && $file = stream_resolve_include_path($logicalPathPsr0)) {
return $file; return $file;
} }